饲粮添加复合酶和制粒对肉仔鸡生产性能、养分代谢率及血液指标的影响     

吕秋凤  董欣  王聪  王丽娟  王玉璘  封伟杰  刘国华 《饲料工业》2015,(6):19-24

试验旨在研究不同浓度复合酶制剂对肉鸡生产性能、养分代谢率及血液指标的影响。试验采用两因素2×3析因设计,试验设3个复合酶水平(0、253 g/t和335 g/t),2个加工工艺(不制粒、制粒)。选择1日龄的AA+肉鸡(公、母各半混养)1 200只,随机分为6个组,每组4个重复,每个重复50只,使各处理组之间鸡的重量差异不显著(P0.05),试验期28 d。结果表明:复合酶提高了肉鸡平均日增重、降低了料重比,335 g/t+制粒组效果较优;复合酶提高了肉鸡对养分的利用率,335 g/t+制粒组效果较优;复合酶提高了血糖含量、降低了血液中尿素氮含量,335 g/t+制粒组效果较优;复合酶提高Ig G含量,335 g/t+制粒组效果较优。由此可见,杂粕日粮中添加复合酶表现出较好的作用效果,以335 g/t+制粒组对肉鸡的作用效果最好。  相似文献   

湖北襄阳市对冷冻动物产品的监管办法     

陆东  胡玉兵  侯向进  熊书琴  肖文俊  冯永秀 《中国动物检疫》2015,32(3):26-27

通过分析湖北襄阳市实行的驻场官方兽医、冷库开办方、冷冻产品经营户三级冷冻动物产品监管模式,发现实践中存在缺乏统一性和可追溯性问题,提出了健全规章和追溯体系、统一规范标准的建议。  相似文献   

中东呼吸综合征的流行与研究进展     

宋建德  袁丽萍  秦建国  朱迪国  魏荣 《中国动物检疫》2015,32(7):1-7

本文全面介绍了MERS的疾病概况、人间及动物间流行情况,目前该病已经蔓延到全球25个国家,造成1300余人感染、近500人死亡,并有4个国家发现骆驼MERS病例;总结了世界卫生组织（WHO）、世界动物卫生组织（OIE）和联合国粮农组织（FAO）等采取的防控措施,并从病毒来源、能否人际间传播、有效疫苗和药物研制等3个方面对MERS的研究进展进行了概述。目前认为,人类MERS的传染源可能是骆驼, MERS-CoV仅发生了有限的人传人,还没有研制出有效的特异性疫苗和药物。本文还简述了我国的防控情况,并提出了相关防控建议。  相似文献   

德国畜禽产业发展及屠宰管理概述     

刘俊辉  刘静  王栋  范钦磊  郑增忍 《中国动物检疫》2015,32(7):42-46

德国畜牧业发达,在保障本国,甚至欧盟的畜禽产品供应上发挥了重要作用。本文介绍了德国畜禽产业发展的基本情况,总结了德国在畜禽屠宰管理方面的基本原则和成功做法,以期对我国畜禽产业发展和屠宰管理提供参考和借鉴。  相似文献   

烟酸对未去势湘中公牛生长性能、肉品质和血清生化指标的影响   总被引：1，自引：0，他引：1  

杨竹青  包淋斌  赵向辉  王灿宇  周珊  傅传鞭  露华  祝远魁  邓新堂  吴东  瞿明仁 《动物营养学报》2015,(1):85-92

本研究旨在研究烟酸对未去势湘中公牛生长性能、肉品质和血清生化指标的影响。选择1.5岁左右体重[(385.08±15.20)kg]匀称的未去势湘中黑公牛21头,随机分成3组,每组7头,各组分别在基础饲粮中添加0、800、1 200 mg/kg烟酸。预试期14 d,正试期120 d。结果表明:烟酸对公牛的平均日增重、日均采食量、饲料转化率、背膘厚、眼肌面积均没有显著影响(P0.05)。烟酸对背最长肌的p H、肉色亮度和红度值、剪切力、滴水损失以及水分、粗脂肪和粗蛋白质含量均没有显著影响(P0.05)。1 200 mg/kg烟酸显著降低血清总胆固醇和高密度脂蛋白胆固醇(HDL-C)含量(P0.05),800 mg/kg烟酸显著降低血清HDL-C含量(P0.05),烟酸对低密度脂蛋白胆固醇含量没有显著影响(P0.05)。1 200 mg/kg烟酸可以提高血清非酯化脂肪酸(P0.05)和葡萄糖含量(P=0.06),降低血清尿素氮含量(P=0.07)。综上,本研究并没有观察到烟酸对未去势湘中公牛生长性能和肉品质等指标有影响,但对血脂指标有一定调节作用,推测可能是未去势公牛的雄性激素的作用覆盖了烟酸的作用。  相似文献   

蜂针治疗过敏时使用激素类药物的探讨     

李万瑶  张羽  王栋 《中国蜂业》2015,65(2):46-48

蜂针疗法对各类疾病的疗效越来越得到社会的肯定,然而伴随疗效的是蜂针的过敏反应,应对这些紧急的、临床反应重的甚至出现过敏性休克的病例时,我们往往需要使用肾上腺糖皮质激素进行治疗。故本文对肾上腺糖皮质激素抗过敏的药理及作用机制、抗过敏常用的肾上腺糖皮质激素的种类、各类药物的规格、用法用量及其禁忌症、出现不良反应时的应对措施作了探讨与总结,对保证蜂针疗法的安全性有意义。  相似文献   

Phylogenetic analysis of Newcastle disease viruses isolated from wild birds in the Poyang Lake region of China     

Shengtao FAN  Tiecheng WANG  Xiaolong GAO  Ying YING  Xue LI  Yongcheng LI  Yuanguo LI  Jinzhu MA  Heting SUN  Dong CHU  Yu XU  Songtao YANG  Qihan LI  Yuwei GAO  Xianzhu XIA 《The Journal of veterinary medical science / the Japanese Society of Veterinary Science》2015,77(9):1143-1149

Newcastle disease virus (NDV) causes a highly contagious viral disease in poultry and wild birds, and it can cause significant economic loss worldwide. Eight viral strains were isolated by inoculating embryonated chicken eggs from the Poyang Lake region of China with swab samples. All eight of the NDV isolates were identified as class I genotype 3 strains, but they diverged notablely from class II viruses. Further analysis revealed that all eight NDV isolates were lentogenic strains containing the ¹¹²ERQER↓L¹¹⁷ motif at the F protein cleavage site. The strains were highly identical and were more species specific (chicken and waterfowl) than site specific (Nanchang and Duchang regions). The close phylogenetic proximity of these isolates indicates that viral transmission may happen between poultry and wild birds. Our study demonstrates that lentogenic class I NDVs exist in clinically healthy wild waterfowl and poultry within the Poyang Lake region. Active surveillance of these viruses to determine their evolution and origin is one of the most realistic strategies for preventing and controlling NDV outbreaks.  相似文献   

Effects of dietary energy level on lipid metabolism‐related gene expression in subcutaneous adipose tissue of Yellow breed × Simmental cattle          下载免费PDF全文

Haibo Zhang  Xiangfei Zhang  ZhiSheng Wang  Xianwen Dong  Cui Tan  Huawei Zou  Quanhui Peng  Bai Xue  Lizhi Wang  Guozhong Dong 《Animal Science Journal》2015,86(4):392-400

This study was conducted to estimate the effect of dietary energy level on lipid metabolism‐related gene expression of subcutaneous adipose tissue in Yellow breed × Simmental cattle. The experiment was conducted for 60 days. The results showed that final weight, average daily gain, average backfat thickness, (testicles + kidney + pelvic) fat percentage and subcutaneous fat percentage in the high and medium energy groups were significantly higher than in the low‐energy group but that the feed conversion ratio was significantly lower. The glucose, triglycerides, cholesterol, high‐density lipoprotein and low‐density lipoprotein in the high‐energy group were significantly higher than in the low‐energy group. With dietary energy increasing the activities of lipoprotein lipase (LPL), fatty acid synthase (FAS) and acetyl‐CoA carboxylase (ACC) significantly increased, whereas hormone‐sensitive lipase (HSL) and carnitine palmitoyltransferase‐1 (CPT‐1) significantly diminished. Peroxisome proliferator‐activated receptor γ (PPARγ), LPL, FAS, sterol regulatory element binding protein 1 (SREBP‐1), ACC, stearoyl‐CoA desaturase (SCD) and adipocyte‐fatty acid binding proteins (A‐FABP) gene expression were significantly increased by dietary energy increasing, and HSL and CPT‐1 gene expression were significantly decreased. These results indicated that with dietary energy increasing, the subcutaneous fat accumulation mainly increased due to adipose tissue lipogenic gene expression and decreased lipolytic gene expression.  相似文献   

Bioactivity of sandalwood oil (Santalum austrocaledonicum) and its main components against the cotton aphid,Aphis gossypii     

Hyun Sik Roh  Junheon Kim  Eun-Sik Shin  Dong Woon Lee  Ho Yul Choo  Chung Gyoo Park 《Journal of pest science》2015,88(3):621-627

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武汉市农村种植户综合污水污染指标研究     

刘君  蔡丽华  刘冬  龚志  刘文涛 《绿色科技》2015,(3)

指出了随着武汉市农村地区农副产品加工和水产、牲畜养殖的规模化发展,农村生活污水和生产废水的排放量与日俱增。随机对武汉市农村地区6个村庄,每个村庄3户农家的水样进行了取样和检测,分析了水质的COD、BOD、T N、T P、T SS ,结果表明：各地区水质特征基本吻合,整体波动幅度不大,提出了使用STCC工艺处理武汉市农村种植户综合污水的方案。  相似文献