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    Research Progress and Application Prospect of Navigation Mechanism in Pigeon
    SHAO Linlei, CHEN Peiqi, XIE Zeting, XU Haoze, LIN Suiyuan, LIN Chuanghao, GUO Shiqi, WU Zhongping, CHEN Yitian, LIANG Yayan, ZHANG Xumeng
    Guangdong Journal of Animal and Veterinary Science    2025, 50 (2): 71-78.   DOI: 10.19978/j.cnki.xmsy.2025.02.11
    Abstract446)      PDF (1586KB)(3722)       Save
    In ancient times,pigeons became communication tools due to their navigation ability and good homing performance. Although researchers have extensively explored the navigation mechanism of pigeons over the years,its navigation mechanism is still unclear. This article elaborates on the current research on pigeon flight navigation mechanism from the perspective of natural factors such as solar compass,geomagnetic field,visual clues,olfactory clues,etc. It clarifies that pigeons use solar information as the primary clue to guide navigation behavior,and use geomagnetic information,sensory information,etc. to assist navigation. It also introduces the research progress of using pigeon flight navigation mechanism to develop biological robots,manned flight,and navigation technology,and looks forward to the future development of related technologies. This article summarizes the theoretical research, development,and application of pigeon flight navigation mechanism,providing materials for the future application of related technologies.
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    Guangdong Journal of Animal and Veterinary Science    2024, 49 (6): 104-108.   DOI: 10.19978/j.cnki.xmsy.2024.06.17
    Abstract485)      PDF (1207KB)(2141)       Save
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    Overview of Five Frequently Used Virus Inactivators
    SHI Daqing,XIAO Yongzhen,CHEN Hanlin,CHEN Jinxian,WANG Ling,QI Dongmei,LIN Derui*
    Guangdong Journal of Animal and Veterinary Science    2023, 48 (4): 66-71.   DOI: 10.19978/j.cnki.xmsy.2023.04.12
    Abstract569)      PDF (1013KB)(2028)       Save
    Virus inactivation is the process of using physical or chemical methods to make the virus lose infectivity. The virus inactivation efficiency is often affected by many factors,such as virus characteristics,types of inactivators and the aims of inactivation. The selection of inactivators is usually determined by the characteristics of the virus and its use after inactivation. Vaccine development requires complete inactivation of the virus while maintaining the integrity of the viral protective antigen epitope structure to induce an effective host immune response. Molecular biological detection requires complete viral genome integrity. Therefore,selecting appropriate inactivators to inactivate highly pathogenic pathogens is an important guarantee for subsequent work such as pathogen molecular diagnosis, serological analysis,and vaccine development. At present,more and more virus inactivators are being developed and utilized. In this paper,5 chemical virus inactivators frequently used are selected,namely formaldehyde,β ? propiolactone,guanidium based chaotropic salts,psoralen,hydrogen peroxide,the inactivation mechanism and inactivation characteristics of the aboved virus inactivators,along with the application of inactivated virus are summarized as follows.
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    Identification and Antimicrobial Test of Bacillus Velezensis
    ZHOU Shuzhen1 ,GU Zhichun1 ,ZHANG Ruixue2 ,LIAO Jiedan3 ,XIE Zhiheng 1 ,ZHANG Xing2 , GU Wanjun3 ,HUANG Liangzong3*
    Guangdong Journal of Animal and Veterinary Science    2023, 48 (4): 30-34.   DOI: 10.19978/j.cnki.xmsy.2023.04.06
    Abstract332)      PDF (2519KB)(1956)       Save
    In this study,sequencing identification,drug sensitivity testing,and antibacterial assays were conducted on six Bacillus velezensis strains isolated from diverse sources. The results indicated that the 16S rDNA sequences of these six isolates were positioned within the same genetic evolutionary branch of Bacillus velezensis,and sensitivity to seven selected antimicrobial drugs was exhibited. Bacteriostatic effects against both Staphylococcus aureus and Escherichia coli were demonstrated for the six strains and their metabolites. The bacteriostatic intensity of the samples followed the order of Bacillus velezensis liquid, supernatant,and filtrate.
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    Recent Advances in Etiological Analysis and Diagnosis of Young Pigeon Disease Syndrome
    LIU Mengfan1 ,KE Junhong2 ,JIANG Hanyu1 ,YANG Huihu1 ,XIE Zimin1 ,LUO Rui1 , HUANG Shujian1,2* ,MEI Kun1*
    Guangdong Journal of Animal and Veterinary Science    2023, 48 (5): 69-74.   DOI: 10.19978/j.cnki.xmsy.2023.05.12
    Abstract375)      PDF (982KB)(1921)       Save
    In recent years,young pigeon disease syndrome(YPDS)has widely spread in the world,causing huge economic losses to the pigeon breeding industry. At present,there are few studies on YPDS,diagnostic criteria, and specific drugs and vaccines,which brings great challenges to the prevention and control of YPDS. In order to better understand the syndrome,this article systematically reviews the etiology,prevalence,diagnosis and prevention and control measures of YPDS. Referring to the relevant literature at home and abroad in the past 30 years,the pathogens that may cause YPDS were systematically described,and each diagnosis method and control measures were summarized. YPDS is a multifactorial disease mainly caused by Pigeon circovirus (PiCV),Pigeon herpesvirus (PiHV)and Pigeon adenovirus(PiADV). It can cause the death of young pigeons aged 7 to 15 weeks. The main clinical symptoms included depression,disordered feathers,anorexia,vomiting and diarrhea. At present,the mainprevention and control measures of this syndrome are to strengthen feeding management. This paper summarized the etiology,diagnosis and prevention and control measures of YPDS,which provides reference for production practice.
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    Present and Prospective View of Intestinal Organoids in Swine Basic Research
    XIE Zeen, ZHANG Yongliang
    Guangdong Journal of Animal and Veterinary Science    2023, 48 (5): 15-22.   DOI: 10.19978/j.cnki.xmsy.2023.05.03
    Abstract380)      PDF (1499KB)(1743)       Save
    Intestinal organoids are cell ? based structures that mimic the functions of organs. They are three ? dimensional structures composed of various types of cells derived from intestinal stem cells via laboratory cultivation. In recent years,their applications in medical research,drug testing,and animal sciences have drawn significant attention. Intestinal organoids offer a promising tool for studying the physiology of the gut as they closely resemble the in vivo conditions and as reliable alternatives to traditional cell?based models in vitro research. In swine?based studies, these organoids have been successfully employed to simulate viral infections and investigate intestinal functions, including nutrient absorption and viral diseases.The use of intestinal organoids has also gained attention in the field of veterinary medicine. Their potential and advantages have been increasingly recognized,leading to a rise in related publications. However,there are still unresolved challenges that need to be addressed to further expand their applications in this field.In this review article,we provided an overview of the applications for intestinal organoids in animal sciences,with a specific focus on swine research. Furthermore,we proposed several recommendations for the development and future directions of this technology in the field of livestock and veterinary medicine.
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    Guangdong Journal of Animal and Veterinary Science    2024, 49 (1): 1-15.   DOI: 10.19978/j.cnki.xmsy.2024.01.01
    Abstract455)      PDF (1345KB)(1506)       Save
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    Guangdong Journal of Animal and Veterinary Science    2024, 49 (1): 57-64.   DOI: 10.19978/j.cnki.xmsy.2024.01.08
    Abstract562)      PDF (1084KB)(1423)       Save
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    Diagnosis,Prevention and Control of Mixed Infection Cases in the Reserve Breeding Pigeons Flock of a Large⁃scale Pigeon Farm in Guangdong
    ZHU Xiaohua, CHEN Xiaobing, ZOU Yue, GU Xingge, BAI Yinshan, LIU Guoqian
    Guangdong Journal of Animal and Veterinary Science    2025, 50 (1): 99-104.   DOI: 10.19978/j.cnki.xmsy.2025.01.16
    Abstract242)      PDF (2070KB)(1417)       Save
    Through epidemiological investigation,clinical symptom observation,necropsy analysis,bacterial isolation and identification,and viral detection,this study examined multi⁃pathogen infections and drug susceptibility in reserve breeding pigeons from a large⁃scale pigeon farm in Guangdong under high⁃temperature and high⁃humidity conditions. The results revealed that the diseased pigeon flock was primarily infected with Newcastle disease virus (NDV),H9N2 subtype avian influenza virus,and pigeon circovirus(PiCV),accompanied by co⁃infections with Escherichia coli and Salmonella. Drug susceptibility testing showed that the pathogens were highly sensitive to gentamicin.The findings suggest that PiCV infection may enhance the susceptibility of pigeons to H9N2 avian influenza and play a critical role in mixed infections. This study provides clinical evidence for understanding the mechanisms of mixed infections in pigeons under immunosuppressive conditions and offers valuable insights for the comprehensive prevention and control of pigeon diseases.
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    Comparative study on the growth,muscle quality and benefit of Macrobrachium rosenbergii under two culture models
    CHEN Xiaoying, HUANG Wen, ZHOU Bingquan, SUN Yuping
    Guangdong Journal of Animal and Veterinary Science    2025, 50 (4): 34-39.   DOI: 10.19978/j.cnki.xmsy.2025.04.06
    Abstract223)      PDF (1096KB)(1340)       Save
    Intensice pond culture and“cultivate Hydrilla verticillata and breeding shrimp”are the two most typical culture models of macrobrachium rosenbergii in Guangdong province. This study was invetigate to comparative the effects of two cultrue molels on growth performance,body composition,muscle amino acid composition and economic benefit of M.rosenbergii. The results showed that the final body size,condiction factor and freshness of M. rosenbergii produced under the two cultrue models including intensice pond culture and“cultivate H. verticillata and breeding shrimp”had significant difference.The contents of crude protein and calcium composition in the whole body, essential amino acids,flavorable amino acids and total amino acids in the shrimp muscle under the“cultivate H.verticillata and breeding shrimp”model were significantly higher than those under the intensice pond model. The income,net profit,input��output ratio and cost profit margin of“cultivate H. verticillata and breeding shrimp”model were obviously higher than that of the intensice pond model. These results indicated that the M. rosenbergii produced under the the“cultivate H. verticillata and breeding shrimp”model is more in line with the taste of producers and consumers,and it is suggested to adopt it in production practice and promote it. The results provided a reference for the selection of culture mode of M. rosenbergii.
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    Research Progress on the Canine Social Behavior and Human⁃dog Relationship
    HUANG Huiwen, LIU Yuwen, GUO Yan, DENG Baichuan, ZHANG Lingna
    Guangdong Journal of Animal and Veterinary Science    2025, 50 (1): 72-81.   DOI: 10.19978/j.cnki.xmsy.2025.01.12
    Abstract731)      PDF (1204KB)(1324)       Save
    Throughout the long history of co⁃evolution with humans,dogs have developed a superior ability in the understanding and utilization of social signals within human society compared to other animals. While there has been considerable foreign research on dog social behavior and cognition and the human⁃dog relationship,this area of study is relatively new in China. This review summarizes the research progress on dog social cognitive abilities in human⁃dog interactions,focusing on the understanding and use of human social signals by dogs,their ability to send social signals to humans,and factors that influence dog social abilities with humans(i.e.,environmental,physiological,and genetic factors). Currently,human understanding of dog social behavior is inadequate,with most research confined to laboratory settings and having limited practical application. Further research could provide scientific evidence for improving dog social behavior and human⁃dog interactions,fostering a more harmonious relationship between humans and dogs.
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    Diagnosis and Treatment of Urinary Obstruction in a Neutered Male Cat
    DONG Chunlin, YE Junjie, SONG Jia, LIU Shuyang
    Guangdong Journal of Animal and Veterinary Science    2025, 50 (6): 100-105.   DOI: 10.19978/j.cnki.xmsy.2025.06.16
    Abstract150)      PDF (2570KB)(1293)       Save
    This study aims to explore the diagnostic and therapeutic methods for feline urinary retention. As a common manifestation of Feline Lower Urinary Tract Disease(FLUTD),feline urinary retention can lead to systemic infection or even death in severe cases. In this case,feline urinary retention was initially suspected through inspection,inquiry,and palpation;further confirmed by imaging examinations including DR and abdominal color Doppler ultrasound;and finally diagnosed based on the results of blood routine,biochemical indicators,and coagulation function tests. After 3 days of conservative treatment,the cat's symptoms showed no significant improvement,so perineal urethrostomy was performed. The cat achieved good postoperative recovery and a favorable prognosis. This case indicates that for urinary retention cases unresponsive to conservative treatment,perineal urethrostomy can effectively improve the quality of life of affected cats,providing valuable reference for clinical practice.
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    Surveillance and Analysis of Avian Leukosis in Milin Tibetan Chicken
    XU Xinchun, HE Jingyi, YAN Xia, CHEN Peng, JIA Shaoyan, JI Jian, LUO Chenglong
    Guangdong Journal of Animal and Veterinary Science    2025, 50 (4): 40-44.   DOI: 10.19978/j.cnki.xmsy.2025.04.07
    Abstract168)      PDF (1516KB)(1250)       Save
    To explore the detection effect of different detection methods and the feasibility of the combination of avian leukemia virus(ALV)infection and AL purification,the study in chicken,using ALV p27 antigen ELISA method and ALV⁃JPCR nucleic acid detection method,from 2020 to 2024 a total of 1 333 randomly collected whole blood samples for ALV detection analysis. The results showed that in Tibetan chickens,the positive rate of ALV p27 antigen ELISA test was 15.42%,ALV⁃JPCR nucleic acid test was 2.49%. The total positive rate of the two detection methods was 17.23%,among which only 3 individuals were positive for the two detection methods,accounting for 3.95% of the total positive individuals. In addition,since AL purification in 2020 to 2024,the AL positive rate of milin Tibetan chickens decreased from 17.23% to 0 between 2020 and 2024. The results show that there are mixed infection of ALV⁃J subgroup and other subgroups in the flock;the combination of the two methods can greatly improve the ALV detection rate and can provide reference for the actual purification work;the AL purification of milin Tibetan chicken group is significant,which basically realizes the effective control of AL in the flock,which can provide data support for the AL prevention and control purification of this species.
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    Guangdong Journal of Animal and Veterinary Science    2024, 49 (6): 57-61.   DOI: 10.19978/j.cnki.xmsy.2024.06.09
    Abstract335)      PDF (1298KB)(1198)       Save
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    Guangdong Journal of Animal and Veterinary Science    2024, 49 (1): 65-69.   DOI: 10.19978/j.cnki.xmsy.2024.01.09
    Abstract453)      PDF (1277KB)(1184)       Save
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    Advances and Lessons of Foreign Broiler Breeding Industry
    LI Weimin, LUO Wei, JI Jian, LUO Chenglong
    Guangdong Journal of Animal and Veterinary Science    2025, 50 (2): 46-50.   DOI: 10.19978/j.cnki.xmsy.2025.02.07
    Abstract282)      PDF (988KB)(1085)       Save
    This paper systematically summarizes the advances of the White⁃feathered broiler breeding industry in concerned developed countries,such as the United States,France,and the Netherlands. It also analyzes the two leading commercial breeding enterprises that dominate the white⁃feathered broiler chicken breed sources:Aviagen,a subsidiary of the German EW Group,and Cobb⁃Vantress,a subsidiary of the Tyson Foods,Inc. of the United States. And thus,the successful experiences and lessons that can be learnt from foreign white⁃feathered broiler chicken breeding are condensed,which can help formulate our strategies for ensuring the security and self⁃sufficiency of broiler breeding industry.
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    Genomic��wide SNP Genotyping Methods and the Application of Genomic Selection in Livestock and Poultry
    WANG Yiqiu, JIANG Ziqin, WANG Yuzhe, XU Zhenqiang, HU Xiaoxiang,
    Guangdong Journal of Animal and Veterinary Science    2023, 48 (5): 1-6.   DOI: 10.19978/j.cnki.xmsy.2023.05.01
    Abstract394)      PDF (940KB)(1074)       Save
    Genomic selection is a method that uses genome ??wide markers to predict the breeding value of an individual. Single nucleotide polymorphisms(SNPs)are widely used in the field of genetics. In recent years,with the development of SNP genotyping methods,researchers have been able to obtain a large number of genetic markers at a low cost,thereby greatly advancing the technology of genomic selection. This study reviews three main strategies for genome??wide SNP genotyping,summarizes the application of genomic selection in livestock and poultry breeding,and discusses its future prospects. This review will serve as a reference for selecting an appropriate SNP genotyping strategy in the progress of genomic selection.
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    Guangdong Journal of Animal and Veterinary Science    2024, 49 (4): 24-34.   DOI: 10.19978/j.cnki.xmsy.2024.04.04
    Abstract274)      PDF (2704KB)(1034)       Save
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    Research Progress of Emulsion Adjuvants
    XU Shaozhu,ZHANG Guoli,SHI Daqing,QIU Chengwen,KUANG Zhenjie,QI Dongmei*
    Guangdong Journal of Animal and Veterinary Science    2023, 48 (5): 33-38.   DOI: 10.19978/j.cnki.xmsy.2023.05.06
    Abstract523)      PDF (976KB)(973)       Save
    Emulsion immune adjuvant,also known as oil adjuvant,is a kind of immune adjuvant that encapsulates antigens in various oil phases to provide a reservoir for immunogens and enhances the body 's specific immune response to antigens by presenting antigens to immune cells. Since the application of emulsion adjuvants was first reported in 1916,emulsion adjuvants have become an indispensable factor in vaccines research and development for more than 100 years,providing a material guarantee for safer and more efficacy vaccines against various infectious diseases in humans and animals. With the continuous development of modern vaccinology,the research and development of new vaccines have put forward higher requirements for adjuvants. Knowing the composition and understanding the immune mechanism of adjuvants are the premise for the application of adjuvants in vaccine research and development. In order to provide a theoretical reference for emulsion adjuvants in clinical use,in this paper, commonly used and commercialized emulsion adjuvants,such as white oil adjuvants,complete Freund 's adjuvant (CFA),incomplete Freund 's adjuvant(IFA),MF59?,AS adjuvants and Montanides adjuvants were chosen,and their components,immune mechanism and clinical application were reviewed.
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    Guangdong Journal of Animal and Veterinary Science    2023, 48 (6): 34-40.   DOI: 10.19978/j.cnki.xmsy.2023.06.06
    Abstract488)      PDF (1971KB)(969)       Save
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    Research on the Artificial Breeding Techniques of Bungarus Multicinctus Blyth
    CHEN Xiaotong, LIN Hui, HUANG Mian, CHEN Xuanjiao, WEI Wenkang, CHEN Weiping, CHAO Zhi
    Guangdong Journal of Animal and Veterinary Science    2025, 50 (1): 93-98.   DOI: 10.19978/j.cnki.xmsy.2025.01.15
    Abstract681)      PDF (2228KB)(961)       Save
    Abstract:Jinqian Baihua She is a highly-demanded precious crude drug derived from the dried juvenile body of Bungarus multicinctus Blyth(Yin Huan She). It is necessary to promote and standardize the artificial breeding of B. multicinctus to assure its sustainable development. In this article,some explorations had been conducted on adult snake breeding,snake egg hatching,and infant snake nurturing. In terms of adult snake breeding,a breeding model of“multi-layer three-dimensional snake house”was proposed,and the layout of breeding boxes and specifications of breeding equipment were listed;an environmental humidity of 60%-65% was found to be suitable for the growth of B. multicinctus. In terms of hatching,it was found the eggs had a high hatching rate in yellow sandy soil at 27 ℃ and 88% humidity,and an approach for moisturizing the eggs was proposed. In terms of infant snakes nurturing,some first feeding bait were tested,among which newly hatched pond loach[Misgurnus anguillicaudatus(Cantor)]was the most preferred. The research might be valuable in the scientific breeding of B. multicinctus and the production of Jinqian Baihua She for reference.
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    Causes of Odor in Pet Feces and its Improvement Mechanism
    LUO Jun, LUO Huayi, DENG Baichuan
    Guangdong Journal of Animal and Veterinary Science    2025, 50 (2): 79-85.   DOI: 10.19978/j.cnki.xmsy.2025.02.12
    Abstract380)      PDF (1050KB)(952)       Save
    The problem of pet feces is not only related to the health status of pets,but also closely related to environmental sanitation and human health. This paper reviews the causes of pet manure odor,odor components and the research and application progress of pet manure deodorization technology. From the perspective of safety, efficiency and sustainable development,the research hotspots of pet manure deodorization were summarized, including specific nutrient regulation,microbial deodorization and biological enzymatic deodorization. In view of the complexity of odor components,a comprehensive strategy from both source and end application is proposed. Application in the source,improve the digestion and absorption rate of nutrients,reduce the formation of odor precursors;in the end application,the transformation and degradation of malodorous organic matter,improve the efficiency of manure deodorization,in order to improve the pet environment and create a harmonious ecology of human pet symbiosis to provide a reference.
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    A Discussion on the Hatching Technology of Lion's Head Goose Eggs
    DU Ye, QIU Lijun
    Guangdong Journal of Animal and Veterinary Science    2025, 50 (4): 67-72.   DOI: 10.19978/j.cnki.xmsy.2025.04.11
    Abstract186)      PDF (1011KB)(939)       Save
    The Lion⁃head Gooseis originally produced in Chaoshan area and is known as“the king of goose in the world”. Its size is large,growth speed is fast and economic value is high. Lion ⁃ head Goose eggs have the characteristics of large size,hard shell and thick shell membrane,and the hatching process is special. Aiming at the problems of temperature control, humidity management, ventilation exchange, egg turning frequency, egg illumination time and technique of hatching,a series of technical points and parameters were put forward in order to improve hatching rate and healthy rate of Lion⁃head Goose eggs. Provide scientific guidance for breeders,thereby enhancing economic and social benefits.
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    Research Progress of Infectious Laryngotracheitis Vaccines
    XU Shaozhu,ZHANG Guoli,QIU Chengwen,KUANG Zhenjie,WU Yanhua,LU Liping,QI Dongmei*
    Guangdong Journal of Animal and Veterinary Science    2023, 48 (4): 35-41.   DOI: 10.19978/j.cnki.xmsy.2023.04.07
    Abstract519)      PDF (1023KB)(939)       Save
    Infectious Laryngotracheitis(ILT)is a viral respiratory infection of chickens caused by the Infectious Laryngotracheitis Virus(ILTV). ILT is still a serious avian virus disease to susceptible chickens,especially in the intensive poultry farming areas. ILT is clinically manifested as acute type and mild type,the acute type has high morbidity and mortality,while the mild type has low mortality but increasing infection in intensive poultry farming areas. ILT can cause death and decreased egg production,and lead to severe economic to the poultry industry. At present,ILT has been well controlled in intensive poultry farming areas through comprehensive prevention and control measures combining vaccination and biosafety. In this paper,we reviewed the commercialized attenuated live ILT vaccines and recombinant virus vector live vaccines in many countries,as well as the new ILT vaccines under development,such as recombinant virus vector live vaccines,gene ? deletion live vaccines and virus ? like particle vaccines, in order to provide references for better prevention and control of ILT.
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    Guangdong Journal of Animal and Veterinary Science    2024, 49 (6): 50-56.   DOI: 10.19978/j.cnki.xmsy.2024.06.08
    Abstract377)      PDF (1076KB)(934)       Save
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    Guangdong Journal of Animal and Veterinary Science    2024, 49 (6): 90-98.   DOI: 10.19978/j.cnki.xmsy.2024.06.15
    Abstract494)      PDF (1359KB)(924)       Save
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    Guangdong Journal of Animal and Veterinary Science    2024, 49 (6): 62-66.   DOI: 10.19978/j.cnki.xmsy.2024.06.10
    Abstract230)      PDF (1043KB)(914)       Save
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    Nutritional Value of Non - conventional Oilseed Meal and Its Application of Fermented Feed in Broiler Production
    LEI Yuheng, Guo Zhaowen, SONG Min, MA Xianyong, CUI Yiyan, YU Miao
    Guangdong Journal of Animal and Veterinary Science    2025, 50 (3): 71-81.   DOI: 10.19978/j.cnki.xmsy.2025.03.11
    Abstract242)      PDF (1056KB)(905)       Save
    Miscellaneous meal refers to the by⁃product from oil crops after extraction,including rapeseed meal, cottonseed meal,peanut meal and sunflower seed meal. It has high yield and low price,and is rich in protein,fat, and minerals,which make it a valuable unconventional feedstock. However,the high levels of anti⁃nutritional factors present such as crude fiber,tannins,phytic acid and thioglycoside in miscellaneous meal not only impede the digestion and absorption of nutrients but also have toxicological effects,severely constraining the feed utilization of miscellaneous meal. With the advancement and widespread adoption of biotechnological approaches in animal feed production,fermentation of feed raw materials offers a distinctive advantage. Microbial fermentation facilitates the reduction of anti⁃nutrition factors in miscellaneous meal and breaks down indigestible or poorly utilized components into readily absorbable small molecules,enhancing digestion and utilization efficiency of animals. Currently,lactic acid bacteria,bacillus,yeast,and mold are the predominant microorganisms employed in the fermentation of miscellaneous meals. Fermentation also generates valuable metabolites,providing a rich source of probiotics for animals.Reasonable utilization of miscellaneous meal not only save conventional feed resources,alleviate the shortage of domestic feed resources and the situation of“human and animal competition for food”,but also address environmental pollution caused by waste discharge. Miscellaneous meal has broad application prospects in animal production. This paper reviews the nutritional value of miscellaneous meal,changes in nutritional components and anti⁃ nutritional factors before and after fermentation,as well as the application effect of fermented feed in broiler production. It also summarizes the current challenges in the utilization of miscellaneous meal,in order to provide theoretical basis for the application of fermented miscellaneous meal in broiler production.
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    Research Progress on Novel Goose Astrovirus causing Gout in Goslings
    XIANG Yong, TANG Zheng, LI Linlin, XU Zhihong, SUN Minhua
    Guangdong Journal of Animal and Veterinary Science    2024, 49 (2): 1-7.   DOI: 10.19978/j.cnki.xmsy.2024.02.01
    Abstract1025)      PDF (1781KB)(895)       Save
    Goose astrovirus(GAstV)is a newly member of the astrovirus genus discovered recently in China,which mainly affects goslings under 3 weeks of age. The infection rate is as high as 80%,and the mortality rate can beas high as 50%. The goslings infected with GAstV but survived showed growth inhibition and decreased immune level,and were more susceptible to other pathogens. GAstV could be transmitted vertically as well as horizontally by fecal?oral route,and also showed the characteristics of cross ? host transmission. Up to now,due to the lack of commercialized vaccine and other biological products for this virus and the slow progress of the research on its pathogenic mechanism,the scientific formulation and effective implementation of prevention and control measures for this disease still lacks a sufficient theoretical basis and a sound veterinary system,resulting in the grim situation of this disease prevention and control,which has caused great economic losses to the goose industry in China. In this paper,abrief review of the etiology,epidemiology,pathogenicity,immune response and its pathogenic mechanism of GAstV was carried out,with a view to providing a reference for the in ? depth study of GAstV and the preliminary development of preventive and control measures.
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    Guangdong Journal of Animal and Veterinary Science    2023, 48 (6): 1-6.   DOI: 10.19978/j.cnki.xmsy.2023.06.01
    Abstract394)      PDF (6193KB)(894)       Save
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    Effects of Different Temperatures on Viability and Sporulation of Oocysts from Eimeria Tenella
    LIN Xuhui#, ZHU Yibin#, GUO Suyin, QI Nanshan, GUO Zhaowen, LI Juan , YAN Zhuanqiang , YINLijuan, LI Ruhong, LIU Zuozheng, LV Minna, LIAO Shenquan, SUN Mingfei
    Guangdong Journal of Animal and Veterinary Science    2023, 48 (4): 13-19.   DOI: 10.19978/j.cnki.xmsy.2023.04.03
    Abstract374)      PDF (1574KB)(865)       Save
    Temperature is an important factor affecting the sporulation and viability of avian coccidia oocysts. In this study,the effects of different temperatures on the sporulation of Eimeria tenella unsporulated oocysts and the viability of sporulated oocysts were investigated by monitoring the sporulation rate of avian coccidia oocysts,intestinal lesions and oocyst production. The results showed that there was no significant change in the oocyst sporulation activity compared to be treated at -80 ℃ for 30 min,and at -40 ℃,-20 ℃,0 ℃,4 ℃,10 ℃,28 ℃,40 ℃,50 ℃ for 30 min or 1 h respectively,but the oocyst sporulation activity was inhibited after administrated at -80 ℃ for more than 1 h,- 40 ℃ or - 20 ℃ for more than 48 h,and 60 ℃ for more than 30 min. The sporulated oocysts were killed by exposure to liquid nitrogen for 2 min,or at -80 ℃ or higher than 50 ℃ for more than 1 h,whereas sporulated oocysts remain viable at -20 ℃ for 1 to 12 h or at 50 ℃ for 30 min. This study provides data support for the storage conditions of avian coccidia oocysts,and has certain research significance for the prevention and treatment of avian coccidiosis.
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    Guangdong Journal of Animal and Veterinary Science    2024, 49 (3): 65-70.   DOI: 10.19978/j.cnki.xmsy.2024.03.10
    Abstract520)      PDF (1287KB)(864)       Save
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    Guangdong Journal of Animal and Veterinary Science    2024, 49 (1): 70-76.   DOI: 10.19978/j.cnki.xmsy.2024.01.10
    Abstract504)      PDF (1062KB)(836)       Save
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    Research Progress and Control Strategy of Streptococcosis in Fish
    LIANG Qiancai1 ,CHEN Nanqing1 ,LI Ling1 ,LI Han2* ,CAO Jizhen2 ,LI Anxing2
    Guangdong Journal of Animal and Veterinary Science    2023, 48 (4): 54-59.   DOI: 10.19978/j.cnki.xmsy.2023.04.10
    Abstract619)      PDF (985KB)(829)       Save
    China is a major aquaculture production country. In recent years,aquaculture industry has developed rapidly,but the problem of disease has become increasingly prominent,seriously threatening the healthy development of aquaculture. Among these,Streptococcosis is the most serious. Streptococci can infect a variety of aquatic organisms. The pathogens of streptococcal disease include Streptococcus iniae,Streptococcus agalactiae,Streptococcus parauberis. Typical symptoms of the Streptococcosis include behavioural abnormalities,proptosis,and meningitis. At present,antibiotics are still the first choice for the treatment of Streptococcosis,but long-term use of antibiotics is not conducive to the long- term development of aquaculture. Vaccine is an effective way to prevent and control theStreptococcosis, but there is no approved commercial vaccine. This article will introduce the etiology, epidemiology,clinical symptoms,pathogenesis,and detection technology of streptococcal disease,new strategies, and thinking of the prevention and control of streptococcal disease,in order to provide a reference for the prevention and control of Streptococcosis.
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    Guangdong Journal of Animal and Veterinary Science    2024, 49 (5): 7-13.   DOI: 10.19978/j.cnki.xmsy.2024.05.02
    Abstract418)      PDF (1017KB)(824)       Save
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    Current Status of Preservation and Utilization for Guangdong Indigenous Livestock and Poultry Genetic Resources
    Guangdong Journal of Animal and Veterinary Science    2024, 49 (2): 75-80.   DOI: 10.19978/j.cnki.xmsy.2024.02.13
    Abstract326)      PDF (1031KB)(818)       Save
    Livestock and poultry genetic resources are materially fundamental to the initial innovation and development of animal husbandry,and are pivotal means to enhancing the competitiveness of livestock and poultry breeding industry. Guangdong is rich in livestock and poultry genetic resources and has generated a strong comprehensive strength in corresponding breeding industry. Meanwhile,an increasing importance has been attached to the genetic preservation and management in recent years. We here introduced the current livestock and poultry genetic resources in Guangdong with regards to its scale,conservation techniques and methods,construction of preservation system,and major achievements of innovative development and utilization. Thus,the major problems that existed were analyzed,to which constructive solutions were proposed,expectantly providing a reference for the virtuous cycling pattern between preservation and utilization of livestock and poultry genetic resources.
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    Guangdong Journal of Animal and Veterinary Science    2024, 49 (6): 109-112.   DOI: 10.19978/j.cnki.xmsy.2024.06.18
    Abstract262)      PDF (1541KB)(815)       Save
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    Research Progress on the Meat Embrittlement of Tilapia
    Guangdong Journal of Animal and Veterinary Science    2024, 49 (2): 65-69.   DOI: 10.19978/j.cnki.xmsy.2024.02.11
    Abstract571)      PDF (1031KB)(768)       Save
    Meat tenderization plays a pivotal role in elevating the palatability of farmed tilapia. Conventionally, the incorporation of Faba beans into tilapia feed has been employed to augment muscle crude fat content,enhance muscle fiber diameter,and bolster muscle resilience,cumulatively leading to a desirable texture. Nonetheless,this approach is not without its challenges,as it can potentially undermine the growth performance of tilapia,induce intestinal mucosal damage,and even culminate in substantial mortality. To date,the specific factor within Faba beans responsible for these effects,and the underlying mechanism by which it exerts its influence on tilapia meat texture, remain enigmatic. In this comprehensive review,we undertake a rigorous comparative analysis of existing research pertaining to the cultivation of tenderized tilapia. This review delves into the intricate interplay between meat quality, growth performance,intestinal health,and immune indicators following the tenderization process. It aims to offer a theoretical reference for further research and practical applications of tilapia tenderization techniques.
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    Effects of Different Antipruritic Drugs in Canine Pruritus
    SHI Guanwen, OU Zhaojia, LONG Haibin, RAO Gan, HE Jiaxin, HU Minhua
    Guangdong Journal of Animal and Veterinary Science    2025, 50 (2): 110-116.   DOI: 10.19978/j.cnki.xmsy.2025.02.17
    Abstract221)      PDF (1119KB)(759)       Save
    In order to improve the management of dog pruritus and improve the quality of life and animal welfare, 18 dogs with“severe pruritus”grade were selected by visual analogue scale(PVAS). Olatinib maleate,IL ⁃ 31 monoclonal antibody, peramine, dexamethasone and prednisolone were used respectively. The onset speed, antipruritic effect and adverse reactions of the drugs were compared. The results showed that olatinib had the most rapid and significant antipruritic effect after 4 hours of treatment,and IL ⁃ 31 monoclonal antibody had the most significant antipruritic effect after 8,24,48 and 72 hours of treatment. Dexamethasone and prednisolone caused a significant increase in white blood cells and neutrophils in the affected dogs,and the other treatments were normal. In conclusion,olatinib maleate and IL ⁃ 31 monoclonal antibody have obvious advantages in the speed of onset, antipruritic effect and safety.
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    Reasearch Progress on Animal Models of Corneal Defects in Laboratory Animals
    LIN Renzhao, LIUYan, TANG Yantao, ZHU Hongchen, GAO Yanan, CHEN Qiang
    Guangdong Journal of Animal and Veterinary Science    2025, 50 (2): 86-90.   DOI: 10.19978/j.cnki.xmsy.2025.02.13
    Abstract244)      PDF (986KB)(748)       Save
    The review provides a systematic compilation of key preparation techniques,evaluation criteria,and their applications and limitations in ophthalmic research in animal models of corneal defects. By simulating human corneal epithelial injury in animal corneas by means of physical scraping or chemical burns,these models are essential for unraveling the mechanisms of corneal repair,screening drugs and developing new therapies. Despite the structural differences between animal and human corneas and the challenges of model reproducibility,models can be effectively evaluated by fluorescein staining,slit lamp microscopy,and anterior eye segment OCT. Further research shall be devoted to improving the clinical utility of the model and translating the findings into clinical applications to improve the outcomes of patients with keratoconus,thereby improving the quality of life of the patients.
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