【摘 要】
：
为探索麝香草酚复合物、中草药和合生素替代抗生素饲养肉鸭的可行性,选择2 400只健康雏鸭,随机分为4组,每组3个重复,每重复200只鸭进行试验.对照组饲喂基础日粮+5 mg/kg黄霉
【机 构】
：
四川农业大学动医院,广东温氏集团西南分公司
论文部分内容阅读
为探索麝香草酚复合物、中草药和合生素替代抗生素饲养肉鸭的可行性,选择2 400只健康雏鸭,随机分为4组,每组3个重复,每重复200只鸭进行试验.对照组饲喂基础日粮+5 mg/kg黄霉素；试验1、2和3组分别饲喂基础日粮+0.2％麝香草酚复合物、基础日粮+0.5％中草药和基础日粮+0.2％合生素,试验期为45 d.试验结果表明:对照组与试验组各项指标除料肉比外无显著性差异；试验1和2组供试鸭的末质量分别比对照组提高0.24％和2.42％；料肉比分别降低0.43％和3.42％,试验2组与对照组差异显著,试验各组与对照组成活率无显著性差异.试验组在30和40 d能不同程度减少粪样中大肠杆菌的数量.使用麝香草酚复合物和中草药组每千克鸭可多赢利0.04和0.22元.麝香草酚复合物、中草药和合生素都能替代抗生素饲养肉鸭.
其他文献
本文重点分析了SVHC的最新动态及在REACH法规下企业的相关责任与义务,对目前欧盟国家在复杂物品中如何管控SVHC阈值进行了比较,并根据不同管控方式对相关企业提出了应对建议.
The effect of hexadecyltrimethyleamine bromide (HDTMAB) on the removal of A lexandrium sp. LC3 under cupric glutamate stress was investigated. Toxic effect of c
Cell poking is an experimental technique that is widely used to study the mechanical properties of plant cells. A full understanding of the mechanical responses
Two indigenous microorganisms, Bacillus sp. SB02 and Mucor sp. SF06, capable of degrading polycyclic aromatic hydrocarbons (PAHs) were co-immobilized on vermicu
The title compound, 5-N-I-propyl-2-(2′-nitrobenzenesulfonyl)-glutamine, was synthesized and its structure was confirmed by IR, MS, 1H NMR, and elemental analys
Biomarkers in higher plants played an important role to estimate exposure effects of pollutants in soil ecosystem and have received increasing attention in rece
Dichloromethane is harmful to human health and hazardous to atmospheric environment. In this study, two strains were isolated which were identified as Pseudomon
An emission inventory containing emissions from traffic and other sources was complied. Based on the analysis, Carbon Monoxide (CO) emissions from traffic play
剪接位点的识别是基因识别中的一个重要环节.由于现有的基因识别算法主要关注编码区的整体特性,而并不着重考虑个别位点的信息,因此难以准确地识别出剪接位点.考虑到剪接位点
以四季凤仙的幼嫩茎段为外植体,MS为基本培养基,对四季凤仙的组织培养及快繁技术进行了研究。结果表明:最佳的外植体除菌方式为5%的NaClO处理5min;四季凤仙的最佳不定芽诱导