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本试验旨在研究奶牛瘤胃pH、消化酶活性、原虫数量的日动态变化规律及原虫种类。试验选择3头体重为（500±30） kg、泌乳胎次为2~4、健康状况良好、装永久性瘤胃瘘管的干乳期荷斯坦奶牛作为试验瘤胃液供体，分别采集采食前后各时间点瘤胃液。试验预试期14 d，正试期7 d。结果表明：1）随时间变化，瘤胃pH呈一定规律性变化，即在奶牛采食前瘤胃pH较高，采食后随饲粮进入瘤胃，瘤胃pH迅速降低，然后随瘤胃...
本试验旨在研究不同起始pH对中药渣发酵特性的影响，评价中药渣饲料安全性以及其对肉羊育肥的效果。试验按照中药渣发酵起始pH设3个组：A1组（4.55）、A2（5.50）和A3组（6.90），每组均接种植物乳杆菌（Lactobacillus plantarum），接种量为0.5%，定时取样测定pH；发酵结束后分析中药渣中微生物蛋白和有机酸含量；采用高通量测序比较细菌多样性变化特征；测定发酵中药渣中重金...
本研究旨在探讨噬菌体对断奶仔猪生长性能、肠道内容物pH、挥发性脂肪酸含量和二糖酶活性的影响。试验采用单因素试验设计，选用120头遗传背景相似、健康状况良好、胎次接近、初始体重为（7.35±0.03）kg的25日龄断奶仔猪，随机分为4个组，每组5个重复，每个重复6头仔猪。4组仔猪分别饲喂对照饲粮[添加50 mg/kg奎烯酮（有效含量25 mg/kg）和75 mg/kg金霉素（有效含量11.25 mg...
影响羊肉pH变化的因素及其糖原代谢通路机制的研究进展
羊肉 pH 糖原代谢
2020/6/9
屠宰后胴体pH变化是衡量羊肉品质的重要指标之一。本文主要综述了羊肉胴体pH变化的特点以及可能影响肌肉pH变化的因素，诸如品种、饲料类型、饲养方式、环境温度、性别等；此外，还对造成羊肉pH变化的根源和肌肉内糖原代谢机制进行了相关阐述，以期望为通过糖原代谢通路来调控羊肉pH提供一些参考资料。
本试验旨在研究不同营养水平日粮对150~180日龄期间宁夏滩羊瘤胃相关微生物菌群（溶糊精琥珀酸弧菌、栖瘤胃普雷沃氏菌、反刍兽月形单胞菌、溶纤维丁酸弧菌、黄色瘤胃球菌、小韦荣球菌和产甲烷菌）数量、pH和VFA含量的影响。选取112只（公母各半）、体重接近（29±1.25）kg、体况良好的105日龄宁夏滩羊，采用完全随机分组试验设计分为4个处理组（组Ⅰ，Ⅱ，Ⅲ和Ⅳ），每个处理组4个重复，每个重复7只羊...
The effect of non-phytate phosphorus and phytase levels on performance, egg and tibia quality, and pH of the digestive tract in hens fed higher-calcium-content diet
mineral nutrition laying hen egg production
2015/7/3
The effect of three levels of non-phytate phosphorus (NPP) (3.0, 2.1, and 1.7 g/kg) and two levels of 3-phytase (F) (0 and 150 phytase units (FTU)/kg) together with a high dietary calcium concentratio...
The effect of feeding live yeast cultures on ruminal pH and redox potential in dry cows as continuously measured by a new wireless device
rumen physicochemical parameters Clark's Exponent wireless measurement
2015/6/9
An experiment was carried out on four dry Holstein cows fitted with rumen cannulas that were divided into two groups. The crossover design experiment was divided into 4 periods of 3 weeks. Each period...
The effect of individuality of animal on diurnal pattern of pH and redox potential in the rumen of dry cows
redox potential pH rumen measurement in vivo wireless device
2015/6/8
The aim of this study was to continuously monitor ruminal pH and redox potential of individual dry cows using a newly developed wireless device. Three dry Holstein cows fitted with rumen cannulas were...
Meat quality defined based on pH and colour depending on cattle category and slaughter season. colour and pH as determinants of meat quality dependent on cattle category and slaughter season
cattle longissimus thoracis muscle slaughter season meat pH and colour
2015/6/8
The studies were carried out on 614 animals slaughtered in winter and summer seasons. After slaughter and post-slaughter processing the carcasses were evaluated according to EUROP system. The meat pH ...
Dietary Supplementation of Benzoic Acid and Essential Oil Compounds Affects Buffering Capacity of the Feeds, Performance of Turkey Poults and Their Antioxidant Status, pH in the Digestive Tract, Intestinal Microbiota and Morphology
Feed Additives Benzoic Acid Essential Oils Turkeys Performance
2016/5/16
Three trials were conducted to evaluate the effect of supplementation of a basal diet with benzoic acid or thymol or a mixture of essential oil blends (MEO) or a combination of benzoic acid with MEO (...
益生菌对断奶仔猪生长性能、免疫器官指数及胃肠道pH的影响
断奶仔猪 益生菌 生长性能 免疫器官指数
2014/3/13
本试验旨在研究益生菌（植物乳杆菌、枯草芽孢杆菌及其复合菌）对断奶仔猪生长性能、免疫器官指数及胃肠道pH的影响。选择128头断奶仔猪分为4个组，即对照组（CT）、植物乳杆菌组（LB）、枯草芽孢杆菌组（BS）及复合菌组（LBS），每个组4个重复，每个重复8头仔猪，试验期为35 d。结果显示：1）在试验的前2周，各组断奶仔猪的平均日增重无显著差异（P>0.05），但植物乳杆菌组、枯草芽孢杆菌组和复合菌组...
本试验旨在研究益生菌与饲粮组合效应对生长育肥期苏淮猪生长性能、胃肠道pH和肉品质的影响。选择健康、胎次相近、体重接近（(30.29 ± 3.00) kg）的生长育肥期苏淮猪210头，根据3种不同的饲粮处理将猪群分成3组：基础饲粮组（饲喂基础饲粮），益生菌与饲粮组合组（饲喂基础饲粮+益生菌）和抗生素与饲粮组合组（饲喂基础饲粮+抗生素），每组设5个重复，每个重复14头猪。试验期为98 d。结果表明：（...
本试验旨在研究高精料饲粮中添加烟酸对体外瘤胃发酵培养液pH及发酵参数动态变化的影响。选用3头体重（275±20） kg、安装永久性瘤胃瘘管的锦江黄牛作为瘤胃液供体，培养底物为高精料饲粮（精粗比85：15）。Ⅰ、Ⅱ、Ⅲ、Ⅳ组分别在培养底物中添加0、400、800、1 200 mg/kg烟酸（干物质基础），每组4个重复。在培养0、0.5、1.0、2.0、4.0、6.0、8.0、12.0、18.0、24...
Treated Olive Cake as a Non-forage Fiber Source for Growing Awassi Lambs: Effects on Nutrient Intake, Rumen and Urine pH, Performance, and Carcass Yield
Alternative Feed Olive Cake Performance Carcass Yield Sheep
2016/5/11
The objective of this study was to investigate the effects of partial replacement of wheat hay with sun-dried (SOC) or acid-treated SOC (ASOC) olive cake on nutrient intake and performance of Awassi l...