Urea as a source of effective rumen degradable protein for high-yielding dairy cows
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چکیده
منابع مشابه
Evaluation of Optigen II® as a Source of Rumen Degradable Protein for Mature Beef Cows
Cattle consuming bahiagrass pastures in Florida are often deficient in crude protein. The purpose of this study was to observe the effects of two protein supplements (Urea and Optigen) as compared to cows receiving no protein supplementation (Control) while consuming bahiagrass hay. Optigen II® (Alltech, Inc., Nicholasville, KY) is a slow-release nitrogen source. The delayed availability of nit...
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Introduction Genetic progress coupled with improved nutritional management has resulted in many more cows that can produce over 8,500 litres per 305 day lactation. This upward trend in production over the past 30 years has been accompanied by a steady decline in fertility, with first service conception rates often falling below 40%. Over the same period, there have been considerable changes to ...
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Nine multiparous lactating cows averaging 171 days in milk were divided according to days in milk and milk production into three 3×3 Latin squares with three 3-week periods to investigate the effect of rumen degradable protein on milk urea nitrogen. Diets were formulated to provide 3 concentrations of dietary rumen degradable protein (9.8, 10.8, and 11.8% of dry matter), while rumen undegradabl...
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Canola is an offspring of rapeseed (Brassica napus and Brassica campestris/rapa), which was bred through standard plant breeding techniques to have low levels of erucic acid and glucosinolates. Canola seed is rich in oil, and after oil extraction, the remaining “canola meal” (CM), is a rich protein source used as feedstock to different animal species, mainly dairy cows in North America and in E...
متن کاملRole of neutrophils in protection of udder from infection in high yielding dairy cows
Protection of the mammary gland against mastitis-causing pathogens is mediated by many factors in thegland and blood circulation. The professional phagocytic cells of bovine udder, polymorphonuclearneutrophils (PMN) and macrophages, comprise the first line of defense against invading mastitis pathogens.Most researchers now accept that the PMN is a key factor in the cows’ defense against intrama...
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ژورنال
عنوان ژورنال: BSAP Occasional Publication
سال: 1995
ISSN: 0263-967X,2053-5953
DOI: 10.1017/s0263967x00031876