A statistical evaluation of animal and nutritional factors influencing concentrations of milk urea nitrogen
TLDR
Blood urea N, body weight, yield of fat-corrected milk, dietary CP content, excess N intake, dry matter intake, and days in milk were positively related to milk ureaN, and parity, milk and fat yield, dietaryCP per unit of NEL content, and NEL intake were negatively related to Milk Urea N.About:
This article is published in Journal of Dairy Science.The article was published on 1997-11-01 and is currently open access. It has received 514 citations till now. The article focuses on the topics: Blood urea nitrogen & Urea.read more
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Invited Review: Integrating Quantitative Findings from Multiple Studies Using Mixed Model Methodology
TL;DR: Improved mathematical and statistical tools and computer technology can help researchers gain more accurate information from published studies and improve future research, to result in better prediction equations of biological systems and a more accurate description of their prediction errors.
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Effect of replacing alfalfa silage with high moisture corn on ruminal protein synthesis estimated from excretion of total purine derivatives
TL;DR: Twenty-four multiparous dairy cows were blocked by days in milk and assigned to six balanced 4 x 4 Latin squares with 21-d periods, suggesting that this was the optimal level for utilization of dietary NPN from alfalfa silage and other sources.
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Effects of varying dietary protein and energy levels on the production of lactating dairy cows.
TL;DR: Increasing dietary energy by reducing forage improved milk yield and efficiency and decreased excretion of environmentally labile urinary N, suggesting increased microbial protein.
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Using Milk Urea Nitrogen to Predict Nitrogen Excretion and Utilization Efficiency in Lactating Dairy Cows
TL;DR: Developing and evaluating a mathematical model that integrates milk urea N to predict excretion, intake, and utilization efficiency of N in lactating dairy cows revealed that a majority of the unexplained model error was associated with variation among cows.
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Effect of dietary crude protein concentration on milk production and nitrogen utilization in lactating dairy cows.
TL;DR: Milk and protein yield showed trends for quadratic responses to dietary CP and were respectively, 38.3 and 1.18 kg/d at 16.5% CP, whereas N secreted in milk decreased from 36.5 to 25.5 and a linear increase in urinary N excretion resulted from a sharp decline in N efficiency.
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