冀西北地区奶牛微量元素、维生素适合喂量的调查

Investigation on Milk Cow's Trace Element and the Suitable Vitamin Amounts in Hebei Northwest Area

对冀西北奶牛养殖较集中的察北管理区近3万头奶牛历时5 d微量元素、维生素的应用观察,认为微量元素、维生素要因地制宜的合理应用,才能有效提高奶牛生产水平.冀西北奶牛养殖要较大幅度提高饲料中微量元素锌、硒、锰、铬和维生素E日给量,更有利于奶牛生产性能的充分发挥,而微量元素铁不必添加.

The trace element and the vitamin application to nearly 30, 000 milk cows were observed in the Hebei northwest administrative district for 5 years. The result showed that only with the reasonable application of the trace element and the vitamin adapted to local conditions, could we raise the cow production level effectively. It would be more advantageous to full display of the milk cow productivity if the Hebei northwest cow cultivation enhances the trace element （zinc, selenium, manganese, chromium） and the Vitamin E feeding quantity in every day, and the trace element iron does not need to increase.