In recent years，porcine rotavirus（PoRV）has shown a high incidence trend worldwide and has surpassed traditional pathogens such as porcine epidemic diarrhea virus（PEDV）and transmissible gastroenteritis virus（TGEV）to become the dominant cause diarrhea in piglets. The virus exhibits high tissue tropism，primarily infecting the small intestinal mucosal epithelial cells of piglets from birth to weaning（1-6 weeks of age）. Clinically， infected piglets present with markedly increased defecation frequency and pass watery，light yellow or grayish?white feces，accompanied by rapid dehydration and electrolyte imbalance，ultimately leading to death from circulatory failure. Furthermore，intestinal barrier damage caused by the virus predisposes affected piglets to secondary infections by other pathogenic bacteria，with morbidity rates in piglet populations reaching as high as 100%. Currently，the prevalence of porcine rotavirus has become a key factor restricting the sustainable development of the pig farming industry. The segmental nature of the viral genome facilitates recombination with rotaviruses from other host species. In recent years，the identification of human? porcine recombinant strains and novel native variants has raised concerns regarding potential zoonotic transmission. This article systematically reviews the etiological characteristics， epidemiology and genetic variations，pathological changes and pathogenic mechanisms，diagnostic methods，and vaccine development progress associated with porcine rotavirus，with the aim of providing a comprehensive overview of current research advancements and establishing a theoretical basis for assessing the risk of cross?species transmission of this virus.

To understand the presence，distribution，activity patterns，and potential to carry pathogens related to diseases such as equine piroplasmosis，Japanese encephalitis，vesicular stomatitis，Trypanosomiasis，West Nile virus，African horse sickness，equine infectious anemia，and equine encephalomyelitis（both Eastern and Western forms），in the unregulated equine disease zones of Conghua District in Guangzhou，we established a monitoring framework. Taking Conghua District as the core area，set up 8 surrounding districts and counties as monitoring areas to capture mosquitoes and insects for monitoring. Through 3 surveys in May，July and September，8，177 mosquitoes， 484 tabanids，655 midges and 529 ticks were caught. Among them，mosquitoes belong to 4 subfamilies，8 genera and 28 species，tabanids belong to 2 subfamilies，2 genera and 2 species，midges belong to 2 subfamilies，2 genera and 2 species，ticks belong to 1 subfamily，1 genus and 1 species. The dominant mosquitoes were culex brevicornis，Culex pseudosquemiculatus， Culex pipiens quinquefasciatus， chironomus， Tabanidae， Ceratopogonidae and Ixodes fanghead（Ixodes）. In May，3，678 mosquitoes were collected，with a mosquito density of 2.36 mosquitoes per light trap hour. In July，2，562 mosquitoes were captured，yielding a density of 1.64 mosquitoes per light trap hour. In September，1，937 mosquitoes were collected，with a density of 1.24 mosquitoes per light trap hour. The number and density of mosquitoes decreased from March to September. The average density of Tabanids was 6.2/field，average density of midges was 8.3/field，and average density of ticks was 8.3/field.

In order to develop a credible dual fluorescence quantitative polymerase chain reaction（qPCR）for detecting novel goose astrovirus type 1（NGAstV⁃1）and type 2（NGAstV⁃2），primers were designed to establish a dual fluorescence qPCR detection method using ORF2 protein of NGAstV⁃1 and NGAstV⁃2，and 36 samples of goose liver and kidney tissue suspected to be infected with NGAstV⁃1 and NGAstV⁃2 were evaluated in this study. The test results showed that the correlation coefficients of qPCR were 0.997 and were negative for novel duck reovirus （NDRV），avian influenza virus（AIV），fowl adenovirus（FAdV），and goose parvovirus（GPV）. The minimum detection limit was 1.12 × 101 copies/μL. The reproducibility test results indicate good reproducibility，with a coefficient of variation between groups of less than 0.8% and a coefficient of variation within groups of less than 0.5%. It can be seen that the qPCR can efficiently and specifically detect NGAstV⁃1 and NGAstV⁃2，providing a feasible method for NGAstV monitoring.

The Goose reovirus（GRV）comprises two distinct types：the classic（GRV）and the novel goose reovirus （NGRV）. These two types exhibit differences in their epidemiological characteristics and viral gene sequences. The lack of sensitive and specific assays for both types of viruses has resulted in difficulties in accurately diagnosing and timely intervening in cases. In order to distinguish GRV from NGRV，a dual RT⁃qPCR assay based on a dye ⁃ based method（SYBR Green I）was established. The results demonstrated that the method was capable of distinguishing GRV（79.5℃） and NGRV（86.5℃） based on their respective melting curves. Furthermore，no amplification was observed for any of the common waterfowl epidemics，the lowest detections were 6.466×101 copies/ μL GRV and 4.979 × 101 copies/μL NGRV. The results demonstrated that the dual RT⁃qPCR assay，based on a dye⁃ based method，could rapidly and accurately identify different types of GRVs in infected geese. The assay exhibited a high degree of precision，with coefficients of variation less than 0.55% for both intra⁃ and intergroups. This method has the potential to support early diagnosis，epidemiological monitoring and effective prevention and control of the disease.

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.

Guangdong Province is a large province of waterfowl breeding and consumption. Affected by the COVID??19，Guangdong’s waterfowl industry has faced severe challenges. This paper is aiming at the problems of the waterfowl industry in Guangdong，such as lack of scientific planning，insufficient investment in research and development，small industrial scale and environmental constraints lack of development and utilization of variety resources and high costs for disease prevention and control. This paper analyzes the current situation of waterfowl industry and proposes to improve the technical system of waterfowl industry. optimize the industrial layout，cultivate leading enterprises，improve the added value of products and strengthen the construction of epidemic prevention system. create a good environment，improve the market competitiveness and provide reference for the sustainable and healthy development of waterfowl industry.