Composition and Cost of Dairy Cow Rations with Varying Hay Crop Quality
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چکیده
منابع مشابه
Ionophores in Dairy Rations
Introduction Ionophores have been used extensively in the beef industry in Canada since 1977. Until recently, there has been no label indication for use of ionophores in lactating dairy cattle. Ionophores are feed additives that alter rumen microbial populations through ion transfer across cell membranes. In Canada, the label warning prohibiting the use of Rumensin premix in lactating dairy ca...
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In an Alpine environment, diets based on local forage resources are needed to maintain the link with the territory and confer special characteristics to typical cheeses. Harvesting at a late stage of maturity, high mechanical losses, and frequent rainfall often make the hay that is harvested of a poor quality. The aim of this study was to evaluate the effects of 2 different conservation methods...
متن کاملUsing Fat in Lactating Cow Rations
1. This document is DS19, one of a series of the Animal Science Department, Florida Cooperative Extension Service, Institute of Food and Agricultural Sciences, University of Florida. Original publication date March 1988. Reviewed June 2003. Visit the EDIS Web Site at http://edis.ifas.ufl.edu. 2. B. Harris, Jr., extension dairy specialist, Dairy Science Department, Cooperative Extension Service,...
متن کاملEffect of Different Amounts of Protein and Varying Proportions of Corn Silage and Alfalfa Hay on Milk Production and Nitrogen Excretion of Dairy Holstein Cows
Four treatments were assigned to determine the effects of dietary potential digestible fiber (pdF) and crude protein (CP) levels in mid lactating Holstein cows on milk production and nitrogen efficiency. Sixteen primiparous (n=8) and multiparous (n=8) Holstein cows (body weight (BW)=546±72 kg; days in milk (DIM)=118±50 day) were allocated to one of four diets in balanced randomized complete des...
متن کاملAddition of Sugars to Dairy Rations
Responses to sugars in dry or liquid form vary from study to study. To explain some of this variation and prioritize when sugars are more likely to have a benefit in diets for high producing dairy cattle, microbial function that influences susceptibility to low ruminal pH or a limitation in growth factors needed for efficient ruminal fiber degradation is discussed in this paper. When fed in pro...
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ژورنال
عنوان ژورنال: Journal of the Northeastern Agricultural Economics Council
سال: 1980
ISSN: 0163-5484
DOI: 10.1017/s0163548400002624