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白细胞介素2在中国黄羽鹌鹑脾脏中的定位
中国黄羽鹌鹑 白细胞介素2 脾脏 定位
2021/4/7
为探讨白介素2（interleukin-2，IL-2）在中国黄羽鹌鹑脾脏中免疫调节的作用机制，观察IL-2在脾脏中的具体分布特点、IL-2在脾脏中随年龄增长而发生的可能性变化，为以后研究IL-2在鹌鹑体内如何发挥免疫效应提供理论基础。随机选0，1，2，3，4，5，6周龄的健康黄羽鹌鹑各10只，取其脾脏，运用免疫组织化学法对IL-2进行组织学定位，观察不同周龄脾脏中阳性细胞的形态及分布情况，运用数据...
为了解乌鸡中鸡杆菌的流行情况及其分离株的遗传进化特点，从河南信阳和南阳的两个乌鸡场采集棉拭子样品，进行鸡杆菌的分离和荧光定量PCR检测，对分离的菌株进行PCR鉴定、药敏试验和16S rRNA、rpoB及gyrB基因的PCR扩增，随后进行三个管家基因的序列测定分析，利用DNAStar中MegAlign程序计算分离株之间的相似性，利用MEGA5.0构建进化树进行遗传进化分析。结果显示：22只乌鸡中16...
坝上长尾鸡MITF基因核心启动子鉴定与分析
坝上长尾鸡 MITF基因 启动子 转录因子
2018/6/26
旨在探明坝上长尾鸡小眼畸形相关转录因子（microphthalmia-associated transcription factor，MITF）基因启动子活性区与结构，为研究MITF基因在毛囊组织中的表达调控提供依据。本研究采用双荧光素酶表达载体的方法，构建了6个含有不同长度坝上长尾鸡MITF基因启动子片段的pGL3-Basic表达载体及4个核心启动子区突变载体，转染DF1细胞48 h后检测双荧光...
Changes in expression of monocarboxylate transporters, heat shock proteins and meat quality of Large White Yorkshire and Ghungroo pigs during hot summer period
Ghungroo Pig Glycolytic Rate Heat Shock Proteins (HSPs) Meat Quality Mono-carboxylate Transporters (MCTs)
2017/3/9
Present study explores the effect of hot summer period on the glycolytic rate of early post-mortem meat quality of Ghungroo and Large White Yorkshire (LWY) pig and comparative adaptability to high tem...
Effects of Dietary Octacosanol on Growth Performance, Carcass Characteristics and Meat Quality of Broiler Chicks
Growth Performance Carcass Characteristics Meat Quality Broiler Chick
2016/11/10
Octacosanol, which has prominent physiological activities and functions, has been recognized as a potential growth promoter in animals. A total of 392 1-d-old male Arbor Acres broiler chicks with simi...
Red Color Light at Different Intensities Affects the Performance, Behavioral Activities and Welfare of Broilers
Behavior Broilers Intensities Performance Red-light, Welfare
2016/7/27
Red light (RL) marked higher weight gain (WG) and preference of broilers compared to other light colors. This study aimed to investigate how different intensities of RL affect the performance, behavio...
Estimation of Sensory Pork Loin Tenderness Using Warner-Bratzler Shear Force and Texture Profile Analysis Measurements
Warner-Bratzler Shear Force Texture Profile Analysis Sensory Evaluation Pork Loin Tenderness
2016/7/27
This study investigated the degree to which instrumental measurements explain the variation in pork loin tenderness as assessed by the sensory evaluation of trained panelists. Warner-Bratzler shear fo...
Evaluation of Salmonella Growth at Low Concentrations of NaNO2 and NaCl in Processed Meat Products Using Probabilistic Model
Salmonella NaNO2 NaCl Probabilistic Model
2016/7/27
This study developed probabilistic models to predict Salmonella growth in processed meat products formulated with varying concentrations of NaCl and NaNO2. A five-strain mixture of Salmonella was inoc...
Comparison of Carcass Characteristics, Meat Quality, and Blood Parameters of Slow and Fast Grown Female Broiler Chickens Raised in Organic or Conventional Production System
Female Broiler Carcass Quality Meat Quality Organic Feeds
2016/7/27
The objective of the study was to compare the carcass characteristics, meat quality, and blood parameters of slow and fast grown female broiler chickens fed in organic or conventional production syste...
畜禽养殖场被认为是空气环境中耐药基因和致病菌的重要来源. 本研究对北京地区22个畜禽养殖场逸散细菌、四环素和红霉素耐药菌气溶胶的浓度进行检测，对其粒径分布和动力学粒径进行分析. 结果表明，所调查的3种生物气溶胶（细菌、四环素耐药菌和红霉素耐药菌），在猪舍内浓度最高，牛舍内最低. 蛋鸡舍内两种抗生素耐药菌气溶胶的浓度均低于肉鸡. 本研究在蛋鸡和肉鸡舍外空气中检测到了四环素和红霉素耐药菌，所占丰度分别...
A chromosome-wide QTL mapping on chromosome 2 to identify loci affecting live weight and carcass traits in F2 population of Japanese quail
DNA markers growth traits QTLs
2016/7/6
The Japanese quail (Coturnix japonica) is a considerable species which is often used for animal modelling in breeding researches. This study aims to detect quantitative trait loci (QTL) underlying gro...
Effects of Dietary Supplementation with Astaxanthin on Histamine Induced Lesions in the Gizzard and Proventriculus of Broiler Chicks
staxanthin Proventriculitis Immunohistochemistry Histamine Lesion Antioxidant
2016/7/27
Astaxanthin (ASX) is a xanthophyll pigment isolated from crustaceans and salmonids. Owing to its powerful antioxidant activity, ASX has been reported to have the potential to protect against gastric u...
Effects of Replacing Pork Back Fat with Canola and Flaxseed Oils on Physicochemical Properties of Emulsion Sausages from Spent Layer Meat
Spent Layer Meat Fat Replacer Canola Oil Flaxseed Oil Emulsion Stability Fatty Acid Profile
2016/7/27
The objective of this study was to investigate the effects of canola and flaxseed oils on the physicochemical properties and sensory quality of emulsion-type sausage made from spent layer meat. Three ...
梅花鹿养殖是近年来我国南方地区出现的新兴养殖业.为探究梅花鹿养殖对养殖环境抗生素抗性基因的影响，采用高通量荧光定量PCR研究了抗生素抗性基因在养殖场区对照土壤、梅花鹿新鲜粪便、梅花鹿粪便堆肥产物和施用堆肥菜地土壤中的分布、丰度和多样性.结果表明，抗性基因的绝对丰度梅花鹿粪便堆肥产物 > 梅花鹿新鲜粪便 > 施用堆肥菜地土壤 > 养殖场区对照土壤，抗生素抗性基因在4种环境样品中具有不同分布格局；梅花...
Evaluation of Optimum Moisture Content for Composting of Beef Manure and Bedding Material Mixtures Using Oxygen Uptake Measurement
Moisture Content Beef Manure Bedding Material, Oxygen Uptake Rate Water Holding Capacity
2016/5/20
Moisture content influences physiological characteristics of microbes and physical structure of solid matrices during composting of animal manure. If moisture content is maintained at a proper level, ...