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Showing 1 to 13 of 13 for “"rumen undegradable protein"”.
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Partitioning of nitrogen by lactating cows fed diets varying in nonfibrous carbohydrate and rumen undegradable protein
… of dietary nonfibrous carbohydrate (NFC) and rumen undegradable protein (RUP) on metabolic and lactational parameters. Diets were isonitrogenous (17.4% CP) and structured in a 2 x 2 factorial arrangement with levels of NFC at 41 or 47% of dietary OM and RUP at 27 or 41% of dietary CP with …
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Assessing Availability and Utilization of Essential Amino Acids in Dairy Cattle Using Stable Isotope Based Approach
… in ruminant is a big challenge due to the rumen fermentation and complicated post absorption utilization. Current techniques used for direct determination of AA absorption and metabolism are laborious and expensive with large variation. The objectives of this project were to investigate AA …
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Nutritional Strategies for Optimizing Nitrogen Utilization by Dairy Cows
… conducted to test the hypothesis that the crude protein (CP) content of the diet can be decreased to improve the efficiency of N utilization for milk production without compromising the supply of metabolizable protein and the lactational performance of dairy cows. Results from the meta-analysis …
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Effect of dietary protein degradability and fat on rumen, blood and milk components of Jersey and Holstein cows
… squares to investigate the effects of dietary protein degradability and supplemental fat on rumen, blood, and milk components. Diet dry matter contained 16% CP with two levels of rumen undegradable protein (RUP) obtained by substituting blood meal for soybean meal. Treatments were 29% RUP, 0% …
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Nitrogen and carbon balance of lactating Holstein cows during early and midlactation
… containing 16% CP were formulated with 30 or 39% rumen undegradable protein (RUP) obtained by substituting blood meal (EM) for soybean meal (SBM). Each level ofRUP was formulated with supplemental phosphorus from mono- and dicalcium phosphate or wheat bran. Dry matter intake was higher in …
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Effect of roughage to concentrate ratio on ruminal fermentation and protein degradability in dairy cows
… it might be beneficial to increase the amount of rumen undegradable protein (RUP) that passes out of the rumen, through manipulation of rumen fermentation to establish a lower rumen pH. To test this hypothesis, a study was conducted in which three ruminally cannulated Holstein cows, 722 kg ±25.6 …
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Urea-N Recycling in Lactating Dairy Cows
… study was designed to determine the effect of rumen degradable protein (RDP) and rumen undegradable protein (RUP) on urea-N recycling and microbial N flow. Eight mid-lactation Holstein cows were assigned to a repeated 4 x 4 Latin square. The diets were isoenergetic with RDP and RUP …
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Effects of Prepartum Energy and Protein Density on Productivity and Influence of Dietary Iron on Copper Status of Holstein and Jersey Cattle
… yield increased linearly with energy density and protein yield did not differ. Increasing prepartum diet energy density increased yield of milk and 4% FCM. In experiment 2, 26 multiparous and 18 primiparous Jerseys were assigned to one of two CP and rumen undegradable protein (RUP) concentrations …
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Use of Newly Developed Blended Feed Supplement on Rumen Parameters and Milk Fat in Dairy Cows
… ruminal fermentation, nutrient digestibility, protein-energy synchronization, and its impact on milk production and nitrogen utilization, with the aim of finding an alternative inexpensive supplement source for dairy cows instead of bypass fats and proteins. BFS was compared with conventional …
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Using Data Analytics in Agriculture to Make Better Management Decisions
… affect measurements associated with ruminant protein digestion. Measurements explored were 0-h washout, potentially degradable, and undegradable protein fractions, protein degradation rate and digestibility of rumen undegradable protein. Our research found that the aforementioned measurements …
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Determining rumen degradable protein requirements in growing beef cattle
… Specifically, supplying the correct amount of protein to livestock is critically important as it is usually the most expensive macronutrient. Accordingly, the objective of livestock nutrition models should be to describe individual nutrient requirements for an animal and potential ingredients …
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Duodenal and ileal digestibility of dietary nutrients and endogenous protein losses in pre- and post-weaning young dairy calves
Digestibilities of crude protein (CP) and amino acids (AA) are crucial characteristics of milk replacers (MR) and calf starters (CS) in a calf-rearing program. Since AA are only absorbed in the small intestine and because the fermentation in the large intestine would alter AA profile in digesta, …