利用质量控制图监控不同实验条件对布鲁氏菌试管凝集实验结果的影响

运用建立的质量控制图,监控不同实验条件对布鲁氏菌试管凝集实验结果可能造成的影响。在每次日常检测时对标准阳性血清进行试管凝集实验并使用浊度仪测量其上清液的光密度(OD值),在收集足够有效数据后,绘制当前条件下的质量控制图。通过模拟日常实验条件下孵育温度、时间等容易产生偏离的条件,记录不同实验条件下标准阳性血清试管凝集实验后上清液的OD值,绘制控制用控制图。运用绘制的质量控制图对不同实验条件进行监控,发现孵育温度和孵育时间均对实验结果产生较大影响,从而导致失控。采用质量控制图对布鲁氏菌试管凝集实验进行监控,可提高质量监控的有效性、科学性。严格控制实验条件是保证实验结果的重要前提。     

创新思路扎实工作推进现代畜牧业又好又快发展——在全国畜牧站长工作会议上的讲话

新年伊始,我们在江西南昌召开全国畜牧站长工作会议.这次会议是在全国农业系统认真学习党的十七大精神,深入贯彻落实科学发展观,探索中国特色农业现代化道路,扎实推进新农村建设的形势下召开的.这次会议非常重要.     

畜禽良种繁育体系建设之我见

畜禽良种繁育体系和饲料生产体系是进行畜牧业生产的两大支撑体系.这两大支撑体系的建设,对推进我国畜牧业经济持续、健康、协调发展具有重大的作用.本文将对我国畜禽良种繁育体系建设的有关问题提出一些意见和建议,希望能起到抛砖引玉的作用.     

江西地区鸭疫里氏杆菌的鉴定及药敏试验

从江西部分地区的25份临床疑似鸭疫里氏杆菌(RA)病例中分离到19株RA。生化特性测定结果表明,19个RA菌株的过氧化氢酶、尿素酶均为阳性,除1株发酵葡萄糖、1株发酵麦芽糖外均不发酵各种糖类,5个RA菌株能液化明胶,15个RA菌株氧化酶阳性,不产生H2S,不还原硝酸盐,吲哚试验、MR试验、VP试验均阴性;80%的菌株对头孢曲松、头孢哌酮、头孢唑啉、罗红霉素等高度敏感,而对阿米卡星、庆大霉素、复方新诺明、卡那霉素、青霉素等耐药。     

维生素A和β-胡萝卜素在反刍动物中的应用

文中简要介绍了维生素A和β-胡萝卜素的营养生理功能,重点综述了维生素A和β-胡萝卜素对反刍动物繁殖、免疫和生产性能的影响。     

猪毛滴虫病病原及诊治的研究进展

猪毛滴虫病的历史较短,关于该病的研究和病例报道也较少。近年来,随着该病导致保育猪腹泻病例日益增多,猪毛滴虫病对养猪业的危害日益显现。本文就该病的病原、危害性、致病机理、流行病学、临床症状、病理变化、诊断以及防治作一综述,旨在为猪毛滴虫病的研究和防控提供参考。     

益生菌发酵饲料对猪的生长和肉质的影响

应用益生菌发酵饲料喂猪,能提高饲料中粗蛋白含量,明显降低猪粪臭味,促进生长、降低料肉比和提高猪肉品质。     

奶牛胚胎一步细管法冷冻解冻试验

胚胎冷冻技术是胚胎保存、切割和性别鉴定以及建立胚胎库等的重要技术基础。试验应用CL-5500冷冻仪,采用乙二醇作保护剂冷冻奶牛胚胎,解冻复苏率达到85.7%。     

统一着装

~~统一着装$第二炮兵军犬训练队@李保华 $第二炮兵军犬训练队@张春新~~     

Effects of steam-treated rice straw feeding on growth,digestibility, and plasma volatile fatty acids of goats under different housing systems

In order to use rice straw as forage in livestock feeding, the effects of steam-treated rice straw (at 15.5 kgf/cm² for 120 s) feeding on growth performance, plasma volatile fatty acid profile, and nutrient digestibility of goats were determined. Twenty male goats (18.69?±?0.34 kg) were used in an 84-day trial. The goats were divided into four groups of five goats each to receive steam-treated (STRS) or untreated (UTRS) rice straw diet under closed house (CH) and open house (OH) systems. The results revealed that the goats fed with STRS had significantly higher dry matter (DM), organic matter (OM), crude protein (CP), neutral detergent fiber (NDF), and acid detergent fiber (ADF) digestibility; similarly, the average daily weight gain and feed conversion ratio were higher for STRS groups under both CH and OH systems than those for UTRS. The plasma protein and insulin in STRS and cholesterol in UTRS groups was higher (P?P?>?0.05) at 30 days. The plasma amylase, lipase, T₃, T₄ and glucagon at 30 and 60 days were not different (P?>?0.05) among the groups. The plasma acetate, propionate, butyrate, and total volatile fatty acid were higher (P?P?>?0.05) on these parameters. It could be concluded that steam treatment of rice straw at 15.5 kgf/cm² for 120 s increased apparent nutrient digestibility, hence increased the growth and feed efficiency of growing goats.