Table of Content

18 October 2025, Volume 50 Issue 5

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Effects of Cherry Valley Male Ducks on Nutrient Digestion and Amino Acid Utilization of Hydrolyzed Feather Meal

ZHU Junrong, ZHANG Haipeng, XIAO Kaige, LYU Yantao, ZHENG Chuntian, WANG Shuang, ZHANG Yanan, WANG Shenglin, JIN Chenglong, HUANG Xuebing, LI Kaichao, CHEN Wei, XIA Weiguang

2025, 50(5):  1-6.  DOI: 10.19978/j.cnki.xmsy.2025.05.01

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This study aimed to evaluate the nutrient digestibility and amino acid utilization of hydrolyzed feather meal produced in Fujian，Shandong，and Guangdong provinces in male Cherry Valley ducks at sexual maturity. Forty􀆼 eight healthy adult male Cherry Valley ducks were randomly divided into four groups with 12 ducks in each group. They were fed with 100% corn starch（control group）and 85% corn starch + 15% hydrolyzed feather meal（Fujian， Shandong，and Guangdong），respectively. Through the metabolic trial of forced feeding􀆼total feces collection，the excreta were collected，and the quality，moisture，dry matter，crude protein，amino acids，calcium and phosphorus of feed and excreta were determined. There were differences in the contents of dry matter，crude protein and true amino acids in hydrolyzed feather meal originating from different regions. The hydrolyzed feather meal produced in Fujian showed the highest contents of dry matter（93.7%） and crude protein（83.4%）. The crude protein contents of hydrolyzed feather meal produced in Shandong and Guangdong were slightly higher than those of Fujian，but the differences in crude protein were not significant（P>0.05）. The true amino acid availability of aspartic acid，threonine and glutamic acid in Fujian hydrolyzed feather meal was higher than that in Shandong and Guangdong（P<0.01）. After force- feeding the diets containing hydrolyzed feather meal produced in Fujian，Shandong and Guangdong，no differences was observed in the weights of feces and fecal contents of dry matter，crude protein，calcium，and phosphorus. The digestibility of dry matter，protein and nitrogen in the feces of Cherry Valley ducks fed hydrolyzed feather meal from different production areas did not show significant differences among Fujian，Shandong and Guangdong（P>0.05）. There were few differences in other nutrients except amino acids in hydrolyzed feather meal from different production areas. The amino acid contents of hydrolyzed feather meal in Fujian were higher，especially the true availabilities of aspartic acid and threonine was significantly better than those of hydrolyzed feather powder in Shandong and Guangdong. The digestibility of dry matter and crude protein of hydrolyzed feather meal among Fujian， Shandong，and Guangdong was less significant.

Network Pharmacology Analysis and Experimental Investigation of the Anti ⁃ Inflammatory Effects of Houttuynia Cordata，#br# Lithospermum Erythrorhizon，and Isatis Indigotica#br#

Yue Zipeng, HE Yinghui, HAO Linyao, Huo Shuying, LI Yurong, LI Shupeng

2025, 50(5):  7-16.  DOI: 10.19978/j.cnki.xmsy.2025.05.02

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To investigate the anti ⁃ inflammatory effects of the combination of Houttuynia cordata，Rubia cordifolia，and Isatis indigotica on macrophage RAW264.7 cells through network pharmacology，molecular docking， and experimental verification methods. The active components and related target sites of Houttuynia cordata，Rubia cordifolia，and Isatis indigotica were identified using TCMSP，ETCM，UniProt，and SwissTargetPrediction databases；component⁃inflammation target network diagram was drawn using Cytoscape 3.6.1 software，and GO function and KEGG pathway enrichment analyses were performed；molecular docking was conducted using AutoDock software. The mRNA secretion of TNF⁃α，IL1⁃β，and IL⁃6 in macrophage RAW264.7 cells was detected by real⁃time fluorescent quantitative PCR to evaluate the anti ⁃ inflammatory effect of the herbal mixture. The anti ⁃ inflammatory effect of Houttuynia cordata，Rubia cordifolia，and Isatis indigotica combination was detected by mouse ear swelling test. A total of 702 active components were obtained for Houttuynia cordata，Rubia cordifolia，and Isatis indigotica， including scutellarin，corindone，and kaempferol，etc.；675 drug⁃inflammation intersection targets were obtained， including IL6，IL1β，and serine/threonine protein kinase（AKT1），etc.；GO function enrichment analysis showed 186，36，and 86 entries；KEGG result analysis yielded 189 pathways. Molecular docking results showed that the active ingredients of the drugs had good binding ability with the main targets. In vitro experiments demonstrated that the three herbal medicines could effectively inhibit the caused by Lipopolysaccharide（LPS），with pathological increases of inflammatory factors such as IL⁃6，TNF⁃α，and IL⁃1β. The combination of Houttuynia cordata，Rubia cordifolia，and Isatis indigotica inhibited the ear swelling of mice caused by dexamethasone at 47.61%，which was significantly different from the model group，indicating that the herbal mixture can exert anti⁃inflammatory effects. The good anti⁃inflammatory effect of the combination of Houttuynia cordata，Rubia cordifolia，and Isatis indigotica is demonstrated by network pharmacology analysis and experimental results，suggesting that it exerts anti⁃inflammatory effects through multiple components，multiple pathways，and multiple targets.

Effect of Valine to Lysine Ratio in Low ⁃ protein Diet on Cytokine and Microorganisms in the Milk of Multiparous Sows

WEI Siyong, GU Fang YE Xiangyang, Yang Xuefen, WANG Li, XIAO Hao, Dong Chunlin

2025, 50(5):  17-23.  DOI: 10.19978/j.cnki.xmsy.2025.05.03

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To reduce feed costs，improve the breeding efficiency of sows，and promote sustainable development in the pig industry，this study investigated the effects of varying valine to lysine（Val/Lys） ratios in low⁃protein diets on the immune function of sows and the microbiota in their milk. Sixty sows with similar body conditions and mating times（fourth parity Landrace × Large White）were selected as the experimental subjects. The minimum nutritional requirements for lactating sows per NRC standards were used as the standard for low⁃protein diets. The sows were randomly divided into six groups：a normal protein group（17% CP，Val/Lys = 0.87）and five low⁃protein diet groups （14.3% CP，Val/Lys ratios of 0.64，0.74，0.84，0.94，and 1.04）. Each sow was accompanied by 12 piglets，and the experiment lasted from the first day of lactation to the 21st day of weaning，a total of 21 days. The results showed that low⁃protein diets without additional valine decreased（P<0.05）the abundance of the B⁃cell marker CD11b in the mammary glands of sows，while increasing the Val/Lys ratio in low⁃protein diets increased（P<0.05）the abundance of CD11b in the mammary glands. Low⁃protein diets without additional valine decreased（P<0.05）the concentration of SIgA in colostrum，while increasing the Val/Lys ratio in low⁃protein diets increased（P<0.05）the concentration of SIgA in colostrum. Low ⁃ protein diets without additional valine significantly decreased （P<0.05） the relative abundance of Bacteroidetes， Fusobacteria， and Acidobacteria at the phylum level and Fusobacterium and Staphylococcus at the genus level in the milk microbiota of lactating sows，while increasing the Val/Lys ratio in low⁃ protein diets increased the relative abundance of these microbiotas. In conclusion，low⁃protein diets without additional valine impair the cytokine and microbial diversity of sows，and increasing the Val/Lys ratio in low⁃protein diets can mitigate these negative effects and help maintain the production performance of sows.


Effects of Compound Nutritional Health Sand on the Slaughter Performance，Biochemical Indicators，and Intestinal Health of Squab Pigeon#br#

LU Haopeng, LI Ziying, ZENG Fanming, ZHENG Shiqi, ZHANG Wei, ZHANG Yanlin, HE Yanle, SONG Mengping, GOU Zhongyong, WANG Jun, LIANG Yayan, HUANG Yanhua, PENG Jie, YAN Kai

2025, 50(5):  24-32.  DOI: 10.19978/j.cnki.xmsy.2025.05.04

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This study aimed to evaluate the effects of compound nutritional health sand on slaughter performance，meat quality，carbohydrate and lipid metabolism，oxidative stress，intestinal morphology，and intestinal enzyme activity in pigeons. For this experiment，96 pairs of Mimas pigeons with similar age，weight，and reproductive performance were selected pigeons. They were randomly divided into two treatment groups. Each group contained 8 replicates，each replicate consisting of 6 pairs of pigeons，and each pair of pigeons rearing 4 squabs. The control group was fed with basic health sand，while the experimental group was fed with compound nutritional health sand. The experimental period was 45 days（17 days of hatching，21 days of lactation，and 7 days of rest）. The results showed the following：Compared with the control group，the crypt depth of the jejunum in the squabs of the experimental group exhibited significantly reduced，and the villus⁃to⁃crypt ratio was significantly increased（P<0.05），while there were no significant changes in the villus height，muscle layer thickness，and villus width of the jejunum（P>0.05）. Compared with the control group，the content of plasma albumin（Alb，Albumin）in the squabs of the experimental group was significantly increased（P<0.05），and there were no significant changes in the content of plasma glucose （Glucose，GLU），urea nitrogen（Urea nitrogen，BUN），total protein（Total Protein，TP），uric acid（Uric acid， UA），total cholesterol（Total Cholesterol，T⁃CHO），and triglycerides（Total Triglyceride，TG）（P>0.05）. Compared with the control group，the activity of amylase（Amylase，AMY）and total superoxide dismutase（Total Super Oxide Dismutase，T⁃SOD）in the jejunum of the squabs of the experimental group was significantly increased（P<0.01）， while there were no significant changes in the activity of total antioxidant capacity（Total anti⁃oxidant status，T⁃AOC）， chymotrypsin（Chymotrypsin，Chy），maltase（Maltase，MDH），catalase（Catalase，CAT），and the content of malondialdehyde （Malonaldehyde， MDA） and hydrogen peroxide （Hydrogen peroxide， H2O2）（P<0.05）. In conclusion，compound nutritional health sand promotes the development of the intestinal tract in pigeons，enhances intestinal health，and holds potential application value in production.

Comparative Study at Egg Quality of Partridge in Different Ages

SHI Liying, GU Jinyuan, LIN Jiezhen, GAN Huadi, WEN Zhenfei, LUO Xingliang, DU Bingwang, HUANG Xunhe

2025, 50(5):  33-37.  DOI: 10.19978/j.cnki.xmsy.2025.05.05

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This study aimed to investigate the quality differences of eggs from caged partridges at different ages （300 d，500 d，and 800 d）to provide a scientific basis for partridge egg selection and breeding management. By measuring parameters such as egg weight，eggshell weight，egg shape index，eggshell strength，eggshell thickness， Haugh unit， yolk weight， yolk ratio， and albumen height， and performing correlation analysis， the study systematically assessed the changes in egg quality with age. The results showed that：（1）Egg weight and eggshell thickness significantly increased with age（P<0.05），whereas eggshell weight，eggshell strength，and yolk ratio first increased and then decreased，peaking at 500 d；（2）The Haugh Unit of eggs at 300 d was the highest（83.68 HU）；（3） The egg shape index was significantly negatively correlated with eggshell strength（P<0.05），and the eggshell thickness of eggs at 800 d（0.31 mm）was significantly greater than that of other ages. The study concluded that the eggs from partridges at 500 d had the best comprehensive quality，and it is recommended that in breeding production，high⁃ quality eggs be selected based on egg quality indicators.

Effects of three plant extracts on growth performance，body composition and serum biochemistry of Litopenaeus vannamei

LIU Xiaochun, HU Junru, ZHOU Donglai, HUANG Wen, WU Han, FU Bing, XING Dongxu, CHEN Bing

2025, 50(5):  38-44.  DOI: 10.19978/j.cnki.xmsy.2025.05.06

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The purpose of this experiment was to study the effects of three plant extracts，soybean isoflavones， mulberry leaf flavonoids and mulberry leaf crude extract，on the growth performance，body composition and serum biochemical indexes of Litopenaeus vannamei. The basal diet（G0，control group）was supplemented with 400 mg/kg soybean isoflavone（G1），50 mg/kg mulberry leaf flavonoid（G2），and 300 mg/kg mulberry leaf crude extract（G3）to formulate experimental diets. A total of 480 Litopenaeus vannamei with an initial body weight of（1.80±0.02）g were randomly allocated into 4 groups with 3 replicates per group and 40 shrimps per replicate. The breeding test period was 60 days. The results showed that：1）There were no significant differences in final body weight，weight gain rate， survival rate，specific growth rate and food intake of Litopenaeus vannamei among all groups（P>0.05）；the feed coefficient of Litopenaeus vannamei in G1，G2 and G3 groups was lower than that in G0 group，and that in G3 group was significantly lower than that in G0 group（P<0.05）；2）There was no significant difference in crude protein，crude fat and water content of whole shrimp in each group（P>0.05），but the crude ash content of G2 group was significantly higher than that of G3 group（P<0.05）；3）There was no significant difference in serum albumin，albumin/globulin， globulin， total protein， triglyceride， alanine aminotransferase， blood glucose， aspartate aminotransferase， cholesterol，high density lipoprotein cholesterol and low density lipoprotein cholesterol levels among the groups（P> 0.05）；the serum urea content in G2 group was significantly lower than that of G0 group（P<0.05）. In summary，the addition of 400 mg/kg soybean isoflavone，50 mg/kg mulberry leaf flavonoids and 300 mg/kg mulberry leaf crude extract to the feed could reduce feed coefficient，improve feed utilization rate，and lower serum urea content. Comprehensive evaluation，the application effect of mulberry leaf crude extract is the best. It provides a scientific basis for the application of plant extracts in Litopenaeus vannamei feed.

Optimization Of A Microcarrier⁃based Three⁃Dimensional Suspension Culture System For Canine Adipose⁃Derived Mesenchymal Stem Cells

WANG Xin, LI Dongsheng, WANG Bingyun, CHEN Shengfeng

2025, 50(5):  45-51.  DOI: 10.19978/j.cnki.xmsy.2025.05.07

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To enhance the expansion efficiency of canine adipose⁃derived mesenchymal stem cells（cADMSCs） and address the limitations of traditional two⁃dimensional culture systems in large⁃scale production，we developed a three⁃dimensional suspension culture system based on SynthemaxⅡ microcarriers was employed. Key parameters， including seeding density，agitation method，and culture duration，were optimized through static and dynamic culture strategies. Static culture experiments compared the effects of different seeding densities（1×104，2×104，and 3×104 cells/cm2）on expansion efficiency and cell viability，with viable cells counted using trypan blue exclusion. Dynamic culture evaluated the impact of intermittent versus intermittent⁃continuous agitation modes on cell proliferation using a spinner flask bioreactor，supplemented with glucose metabolism monitoring. Fluorescent staining（Calcein⁃AM/PI and TRITC⁃phalloidin/DAPI）was applied to assess cell viability，morphology，and cytoskeletal integrity，while culture duration optimization（24-120 h）analyzed expansion kinetics and viability changes. Results showed that under static conditions，a seeding density of 2×104 cells/cm2 achieved the highest expansion fold（7.20±0.20 ⁃fold）with 96.4% viability. Dynamic culture with intermittent agitation（24 h）followed by continuous agitation（72 h）yielded 4.1×104 cells on 300 cm2 microcarriers，corresponding to an expansion fold of（6.70±0.20 ⁃fold）and 94.0% viability. Optimal culture duration was identified as 96 h，with intact cell morphology，no aggregation，and stable viability（94.0%）. These findings indicate that the optimized microcarrier ⁃ based three ⁃ dimensional suspension culture system， incorporating staged agitation strategies and controlled parameters，significantly enhances cADMSC expansion efficiency and quality，offering a viable solution for scalable production in veterinary regenerative medicine.

Isolation and Identification of One Strain of Bovine Mannheimella Haemolytica

LI Jintao, WANG Jinping, AN Qingcong, YAO Jun

2025, 50(5):  52-56.  DOI: 10.19978/j.cnki.xmsy.2025.05.08

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To investigate the cause of the disease and death of Simmental beef cattle from a large-scale farm in Malong County，Yunnan Province，PCR tests were carried out on some bovine virus diseases（BVDV、BCV、BAdV-7、 BAdV-3、BRSV and BEFV）and bacterial pathogens（MB and Pasteurella pultocida）in the lung tissues of the sick and dead cattle sent for testing，followed by bacteria isolation，purification，Gram stained，biochemical identification and antimicrobial susceptibility testing. The results showed that the nucleic acid and bacterial PCR test results of the tested bovine virus were negative. The isolated and purified bacteria were Gram - negative short rods，biochemically characterized as Mannheimella hemolytica. Antimicrobial susceptibility testing revealed sensitivity to polymyxin B and resistant to spectinomycin，chloramphenicol，cefoperazone，cefotaxime，minocycline，ceftriaxone，ceftazidime and cefuroxime. These findings provide theoretical reference for the effective diagnosis and treatment of“ shipping fever” （bovine Mannheimella hemolytica infection，either single or mixed）

Screening of Vaterinary Drug Residues in Animal􀆼derived Food Origin by High Resolution Mass Spectrometry

LIU Yan, LI Lvwen, LIANG Qiqi, ZHANG Huiqi, WU Hongkai

2025, 50(5):  57-65.  DOI: 10.19978/j.cnki.xmsy.2025.05.09

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This paper describes the development of mass spectrometry library and the method of screening and confirming 83 drugs and their metabolites in black⁃bone chicken meat，eggs，beef，and mutton using ultra⁃high performance liquid chromatography ⁃ quadrupole ⁃ obitrap high resolution mass spectrometry （UHPLC ⁃ Q/Obitrap HRMS）. A two⁃step procedure was employed：homogenized samples were first extracted with 2 mL aqueous solution， followed by a second extraction using 8 mL of acetonitrile. The extract was then passed through a purification column， reconstituted after nitrogen blow⁃down，and analyzed by UHPLC⁃Q/Obitrap. The screening detection limits ranged from 5.0－ 20 μg/kg. Average recoveries across three spiked concentration levels were 60%－ 110%. This method proved to be straightforward，rapid and reliable，making it suitable for the rapid screening and confirmation analysis of veterinary drug residues in black⁃bone chicken meat，eggs，beef and mutton.

Development of Indirect ELISA Method for Antibody Detection of Classical Swine Fever Virus

YAN Shiqi, LI Fukun, QI Dongmei, LAI Yuehui, HUANG Fuqiang, FENG Yuxin, ZHOU Xiaomin, FAN Quanbao

2025, 50(5):  66-72.  DOI: 10.19978/j.cnki.xmsy.2025.05.10

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Classical swine fever（CSF）caused by classical swine fever virus（CSFV），is a highly contagious and lethal viral disease in swine，for which vaccination remains a critical preventive strategy，antibody levels is an important indicator for evaluating the immune effect of immunized pig herds. In this study，the recombinant E2Y protein of CSFV was successfully expressed using a prokaryotic expression system. The purified E2Y protein served as a coating antigen，and an indirect ELISA method for detecting CSFV⁃specific antibodies was established through the systematic optimization of experimental conditions. Results indicated that the optimal coating concentration of the E2Y protein was 0.25 μg/mL. The assay demonstrated no cross⁃reactivity with positive sera against common swine viruses and exhibited high specificity，sensitivity，and reproducibility. The concordance between this method and a commercial ELISA kit reached 91.67% . This study successfully developed an indirect ELISA for CSFV antibody detection，providing a technical basis for further optimization and development of CSFV antibody detection reagents.

Research and Application Effects of Egg􀆼type Quail Feeding Farming Technology

DONG Liting, LI Xiang, LI Xingmu, WANG Zheng

2025, 50(5):  73-78.  DOI: 10.19978/j.cnki.xmsy.2025.05.11

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Abstract：This paper explores the latest advancements in in quail egg production technology and their practical applications. The study focuses on several key areas，including precision nutrition management，bioactive calcium development，improved chick 􀆼 rearing systems（such as smart environment control and disease early 􀆼 warning systems），enhanced stress 􀆼 mitigation strategies，optimized evaporative cooling，and solutions to reduce feather pecking behavior. These integrated technologies have significantly improved farming efficiency and egg quality，while addressing critical challenges in traditional quail farming，such as low feed conversion rates and inadequate disease control. The application of these technologies has enhanced husbandry and egg quality，demonstrating notable progress in overcoming the limitations of conventional practices，particularly in feed utilization and disease management.

A Brief Analysis of the Necessity for Flexible Adjustment of Clenbuterol Detection Proportions in the Pork Slaughter Process

HAN Wanyan

2025, 50(5):  79-82.  DOI: 10.19978/j.cnki.xmsy.2025.05.12

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The Food Safety Law of 2009 and the revised Agricultural Product Quality Safety Law of 2023 both explicitly prohibit the use of lean meat enhancing agents（β ⁃ adrenergic receptor agonists such as clenbuterol， ractopamine，and salbutamol） and mandate compulsory testing during the slaughtering process. The Ministry of Agriculture and Rural Affairs also requires hog slaughtering enterprises to implement the regulation of“pre⁃slaughter testing，”with the testing ratio typically set at 5% to 10%（subject to regional variations）. Under the strict supervision and implementation by various departments，the pass rate of recent sampling inspections has consistently remained above 99%. Given that the positive rate of clenbuterol has long been at an extremely low level and testing costs are high，this study focuses on optimizing the testing ratio for clenbuterol in the hog slaughtering process. It will systematically analyze the current testing situation，policy controversies，scientific basis for ratio adjustments，and optimization suggestions，exploring the necessity and feasibility of dynamically adjusting testing intensity and improving regulatory efficiency while maintaining safety standards.

Comprehensive Prevention and Control Strategies for Porcine Epidemic Diarrhea in Large⁃Scale Swine Farms

GENG Rui, XU Zhichao, KANG Qixiang, HU Guangli, SHEN Hanqin, CAO Yongchang

2025, 50(5):  83-90.  DOI: 10.19978/j.cnki.xmsy.2025.05.13

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Porcine epidemic diarrhea（PED），caused by the porcine epidemic diarrhea virus（PEDV），is a highly contagious and lethal infectious disease in pigs. The virus primarily targets the intestinal epithelium，leading to acute diarrhea and dehydration. Since the emergence of highly pathogenic PEDV variants in China in late 2010，PEDV has spread globally，causing significant economic losses on the global swine industry. This review systematically summarizes the current epidemiological trends，genetic variations and hazards of PEDV. Focusing on the three fundamental components of infection source，transmission route，and susceptible animal of infectious diseases，this paper highlights the challenges in current PED prevention and control，and proposes a comprehensive PED prevention and control strategy emphasizing enhanced biosecurity measures and scientifically immunization programs.

A Case Analysis of Differential Diagnosis and Treatment of Bulimia Syndrome in the Red Panda

ZHANG Malong, SA Jiaqi, HUANG Kang, XIE Weijun, ZENG Fanwen

2025, 50(5):  91-94.  DOI: 10.19978/j.cnki.xmsy.2025.05.14

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Through clinical symptom observation，blood routine and biochemical tests，and fecal parasitological examination，a case of suspected bulimia in a red panda（Ailurus fulgens） was investigated and retrospectively analyzed using dialectical treatment. In mid􀆼May 2024，a red panda exhibited clinical symptoms such as irritability， marked anorexia，and progressive emaciation. The blood routine and biochemical tests showed that the blood glucose （GLU）and urea（UREA）were significantly higher than the normal reference values. Based on the comprehensive analysis of various tests，it was concluded that the patient had bulimia nervosa. Traditional Chinese medicine treatment was adopted，and the syndrome was diagnosed as excessive heart fire and stomach fire，insufficient kidney yin，and disharmony between heart and kidney. The prescription selected was modified Huanglian Ejiao Jizi Decoction，which cleared the heart fire and nourished the kidney yin. After about 20 days of treatment，the red panda showed normal feeding and activity，and its body condition gradually recovered.

Diagnostic Case Report of Partial Rectal Stenosis in the Cat

Lin Ran, Kang HuaHua, Wu JunYi, Han Yixin, Fu YunFei, Xu ZhiHong

2025, 50(5):  95-101.  DOI: 10.19978/j.cnki.xmsy.2025.05.15

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There are numerous factors contributing to partial rectal stenosis in cats，including congenital and acquired ones. Common clinical symptoms include abnormal defecation，abdominal distension and pain，and intestinal obstruction. Partial rectal stenosis can be preliminarily diagnosed through computed tomography（CT）and magnetic resonance imaging（MRI），but a definitive diagnosis requires histopathological examination. This paper details the examination process of the affected cats，the surgical plan，and the postoperative recovery situation. Before the surgery，computer tomography（CT），magnetic resonance imaging（MRI），ultrasound，cat serum amyloid A （fSAA），biochemical and blood tests were used to assist in diagnosis. During the surgery，the diseased tissue was removed and sent for histopathological examination. The postoperative recovery was tracked and the diagnosis process was analyzed to provide clinical reference.

2024 Annual Investigation of Insect Vectors in Equine Endemic Areas in Conghua District of Guangzhou City

ZHONG Jiangguo, HUANG Junjie, CHI Shihong, LI Yuze, LIN Junjie, WANG Yiqiao, LUO Haojian, LIU Yingying, MEI Kun, HUANG Shujian

2025, 50(5):  102-108.  DOI: 10.19978/j.cnki.xmsy.2025.05.16

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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.


Study and Construction of the Standard System for the Whole Industry Chain of Qingyuan Chicken

GUO Zhaowen, XUAN Hongyuan, SONG Huimin, CUI Yiyan, SONG Min, YU Miao, MA Xianyong, LIU Zhichang

2025, 50(5):  109-113.  DOI: 10.19978/j.cnki.xmsy.2025.05.17

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This paper addresses the standardization requirements for developing the entire industry chain of Qingyuan Chicken. It outlines a framework for establishing a standardized system and proposes a comprehensive set of standards for the full industry chain. The study aims to leverage standards as a catalyst for industrial coordination and technical collaboration，thereby enhancing the stability and integration of the industrial chain.

Development of a Big􀆼data􀆼driven Early Warning System for Animal Diseases

Wang Neng, Han Xianghong, Yan Beibei

2025, 50(5):  114-120.  DOI: 10.19978/j.cnki.xmsy.2025.05.18

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With the rapid growth of the township animal husbandry industry，the frequent outbreak of animal diseases seriously threatens the safety of the industry and the income of farmers. Establishing an early warning system for animal diseases based on big data analysis is therefore essential. Focusing on the actual needs of township animal husbandry and veterinary stations，this paper proposes a method for building an early warning system for animal diseases based on big data analysis. By integrating multi ⁃ source information such as daily farm data，epidemic detection data，and environmental monitoring data，and using data analytics methods suitable for grassroots level，a straightforward and practical early warning index system and prediction model are established. This system enables early detection and warning of animal diseases，thereby enhancing prevention and control capabilities at the township level，reducing breeding losses，and promoting the healthy development of the animal husbandry as well as public health safety.