UREA AS A SUPPLEMENTAL NITROGEN SOURCE FOR LACTATING COWS
نویسندگان
چکیده
منابع مشابه
Canola Meal as a Protein Source for Lactating Dairy Cows
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 کاملEvaluation of Urinary Nitrogen Excretion from Plasma Urea Nitrogen in Dry and Lactating Cows
Data of 42 balance measurements from dry and lactating Holstein cows and blood and urine samples from 24 Japanese Black cows were collected to evaluate the potential for predicting urinary nitrogen (N) excretion from plasma urea nitrogen (PUN). Similar positive correlations were obtained between N intake and apparent N absorption in dry and lactating cows. The regression equations of N intake o...
متن کاملResponses of Milk Urea Nitrogen Content to Dietary Rume Degradable Protein Level in Lactating Holstein Dairy Cows
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...
متن کاملEvaluation of Sel-PlexTM as a Source of Selenium for Gestating and Lactating Beef Cows
The objective of this study was to compare the plasma selenium (Se) concentrations of cows and calves consuming inorganic Se vs an organic yeast Se source (Sel-PlexTM, Alltech, Inc., Nicholasville, KY). Mature cows were fed one of the two mineral treatments, which were offered freechoice with a targeted intake of 2 oz/ head/d. Each supplement contained equal recommended amounts of supplemental ...
متن کاملPotential of fermentation byproducts as nitrogen supplements for lactating dairy cows.
Two feeding trials evaluated several byproducts from commercial amino acid fermentations as N supplements for lactating cows. Trial 1 was a replicated 5 x 5 Latin square that used 2-wk periods and 25 Holstein cows (five with ruminal cannulae) fed diets containing [dry matter (DM) basis] 28% alfalfa silage, 31% corn silage, 28% high moisture ear corn plus 4 percentage units of crude protein (CP)...
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ژورنال
عنوان ژورنال: Canadian Journal of Animal Science
سال: 1978
ISSN: 0008-3984,1918-1825
DOI: 10.4141/cjas78-011