家畜生态学报2012，Vol.33Issue(4)：18-22,5.
日粮中添加高硒钴锌苜蓿干草对奶牛生产水平的影响
Effects of Alfalfa Hay with High Selenium, Cobalt and Zinc Supplemented in Diet on Production Level of Cows
摘要
Abstract
The effects of diets added 5% of 3 different kinds of alfalfa hay (high contents of Se, Se-Co, Se-Co-Zn) on feed conversion and production traits of Holstein cow were studied in order to provide theoretical bases for raising feed conversion rates as well as milk qualities. The results showed that all diets could enhance feed conversion efficiency and affect percentage of milk contents without harmful side effects compared to common type alfalfa hay . in which, alfalfa hay with high Se could enhance milk yield and conversion efficiency rate by 8. 6% (P<0. 05)and 13,8%(P<0. 05) respectively, but decrease the contents of protein and fat in milk. Alfalfa hay with high Se-Co and high Se-Co-Zn could enforce feed utilization and enhance daily gain , and the conversion efficiency rates raise by 16,5%(P<0. 05) and 33,1%(P <0. 05) respectively. Alfalfa hay with high Se-Co and high Se-Co-Zn can also raise milk qualities. Alfalfa hay with high Se-Co can raise fat content by 22.15% of milk ; Alfalfa hay with high Se-Co-Zn could raise protein content by 9. 28%, lactose content by 3. 26% and fat-free solid content by 4. 69% respectively. Generally speaking, it was more feasible and possible to supplement appropriate amounts of alfalfa hay with high Se-Co-Zn with cow diets with regard to raising feed conversion rates as well as milk qualities with safety and good effects.关键词
日粮/硒/钴/锌/苜蓿/性能Key words
diet /selenium/cobalt/zinc!alfalfa/performance分类
农业科技引用本文复制引用
郭孝,介晓磊,邓红雨,李建平,胡华锋,蒋士传,黄安群..日粮中添加高硒钴锌苜蓿干草对奶牛生产水平的影响[J].家畜生态学报,2012,33(4):18-22,5.基金项目
国家农业科技成果转化资金项目(2010GB2D000287) （2010GB2D000287）
河南省科技成果转化项目(072201120001) （072201120001）
河南省杰出人才创新基金项目(0521001700) （0521001700）
