The H9N2 avian influenza virus (AIV) has become increasingly concerning due to its role in severe economic losses in the poultry industry.Transmission of AIV to mammals,including pigs and humans,has a
The avian sarcoma and leukosis virus (ASLV) family of retroviruses contains six highly related subgroups,A to E and J,thought to have evolved from a common viral ancestor in chicken.The susceptibility
The aim was to identify codon usage bias between the newly comfirmed Salmonella pullorum outer membrane protein C (ompC) gene (GenBank accession No.CP003047) and that of other 21 reference Enterobacte
This study was designed to evaluate the toxicological effect of dietary nickel chloride (NiCl2) on the counts of intestinal bacteria and diversity of microorganisms in broilers.Plate counting and poly
In this study,we attenuated a Chinese QX-like nephropathogenic infectious bronchitis virus (IBV) strain.YX10,by passaging through fertilized chicken eggs.The 90th passage strain (YX10p90) was selected
To investigate the effects of photosynthetic bacteria as additives on water quality,microbial community structure and diversity,a photosynthetic purple non-sulfur bacteria,Rhodopseudamonas palustris,w
The increasing prevalence of obesity worldwide is associated with a parallel increase in non-alcoholic fatty liver disease (NAFLD).To investigate the effect of Lactobacillus johnsonii BS15 on NAFLD,12
[目的]本试验旨在探索酸性蛋白酶水解鸭血球蛋白的最优工艺条件,开发一种新型肽粉,并研究其功能特质与体外抗氧化能力.[方法]通过单因素与正交试验调查酶用量、温度、pH、水解时间等因素对酶解反应的影响,确定最优工艺参数,研究其营养、功能与抗氧化特性.[结果]酸性蛋白酶酶解鸭血球蛋白的最优工艺参数为：酶用量(E/S) 6000 U/g,温度50℃,pH3.5,水解时间7h.采用该工艺条件,鸭血球蛋白水解
选用杜长大三元杂交去势公猪12头，随机分为3组，每组4头，单栏饲养于消化代谢笼中，分别饲喂基础饲料(对照组)、基础料+抗生素、基础料发酵处理饲料；试验28天，测定增重和饲料消耗；试验中期15-19天进行消化试验样品收集，准确记录饲料采食量、全天收集排粪量，并烘干，测定饲料和粪样中营养成分含量，计算各成分表观消化率.结果表明：饲料经过微生物发酵后，猪平均日增重提高4.89％，料重比降低5.97％，但
本文研究了不同生长阶段白玉菇菌糠的营养成分及其发酵饲料的制备工艺条件.试验结果表明白玉菇第3潮采摘后菌糠营养成分最为丰富，粗蛋白含量最高、粗纤维含量最低，是一种潜在的动物饲料原料来源.通过响应面分析法中Plackett-Burman试验设计，筛选出了对白玉菇菌糠发酵效果影响显著的因素作进一步的正交试验，结果表明：白玉菇菌糠发酵饲料的制备最佳工艺条件为白玉菇菌糠：玉米粉8：1、发酵温度30℃、乳酸菌