Estimation of genetic parameters for concentrations of milk urea nitrogen

Journal of Dairy Science;  July 1, 2003 ;     700+ words ......for concentrations of milk urea nitrogen (MUN). Edited data were 36,074...herd-test-day, IR = infrared, MUN = milk urea nitrogen, WC = wet chemistry. INTRODUCTION...the milk, also known as milk urea nitrogen (MUN), is an example of a test...

Analysis of Milk Urea Nitrogen and Lactose and Their Effect on Longevity...

Journal of Dairy Science;  December 1, 2006 ;     700+ words ......lactose and milk urea nitrogen concentration (MUN) and the association...increasing levels of MUN concentration...Key words: milk urea nitrogen, lactose, longevity...technology. Infrared MUN values are calculated...indirect measure of MUN. Wet chemistry...concentration ...

Evaluation of Milk Urea Nitrogen as a Diagnostic of Protein Feeding

Journal of Dairy Science;  February 1, 2004 ;     700+ words ......evaluation of milk urea nitrogen (MUN) as a diagnostic of...that measurements of MUN can be utilized as...excretion. (Key words: milk urea nitrogen, dairy cow, protein...relationship between milk urea nitrogen (MUN) and BUN (Broderick...

Genetic Analysis of Milk Urea Nitrogen and Lactose and Their Relationships...

Journal of Dairy Science;  May 1, 2007 ;     700+ words ......heritabilities of milk urea nitrogen (MUN) and lactose...lactose, milk urea nitrogen, genetic parameter...collecting data for MUN since 1997 in...heritabilities when MUN was analyzed...directly measure urea nitrogen in milk, whereas infrared MUN values are ...

Use of milk urea nitrogen to improve dairy cow diets

Journal of Dairy Science;  April 1, 2002 ;     700+ words ......regarding their herd's milk urea nitrogen (MUN) would result in more...practices and subsequent MUN results. (Key words: milk urea nitrogen, water quality, dairy...N)) Abbreviation key: MUN = milk urea nitrogen. INTRODUCTION Nonpoint...

Genetic Parameters for Milk Urea Nitrogen in Relation to Milk Production...

Journal of Dairy Science;  April 1, 2007 ;     700+ words ......for test-day milk urea nitrogen (MUN) and its relationships...INTRODUCTION Milk urea nitrogen has become an important...will start using MUN to monitor mineral...that decreased MUN will decrease environmental...nitrogen. Milk urea nitrogen might be used as...

Milk Urea Nitrogen Concentration: Heritability and Genetic Correlations...

Journal of Dairy Science;  December 1, 2005 ;     700+ words ......heritability of milk urea nitrogen (MUN) concentration...limit the value of MUN in selection for...Key words: milk urea nitrogen, reproductive performance...records including MUN data obtained from...this study. Milk urea nitrogen concentrati

Sources of variation in milk urea nitrogen in Ohio dairy herds

Journal of Dairy Science;  May 1, 2003 ;     700+ words ......amount of variation in milk urea nitrogen (MUN) concentrations attributable...modeling) Abbreviation key: MUN = milk urea nitrogen, RHA = rolling herd average...studies have shown that milk urea nitrogen (MUN) concentration is related...

Comparison of Analytical Methods and the Influence of Milk Components on...

Journal of Dairy Science;  June 1, 2004 ;     700+ words ......laboratories to measure milk urea nitrogen (MUN) and determine whether...underestimation of MUN. (Key words: milk urea nitrogen, milk component analysis...INTRODUCTION Milk urea nitrogen can be a practical...1999). Monitoring MUN offers the potential...

UPDATE ON MILK UREA NITROGEN TESTING.(News)

The News Letter (Belfast, Northern Ireland);  April 21, 2001 ;     442 words ......two large-scale trials on MUN (milk urea nitrogen) levels in milk recorded herds...conclusions can be drawn: Winter MUN levels are lower than summer...fertility could be impaired. Milk Urea Nitrogen analysis is a very useful...nutritionist when interpreting MUN data. United ...

The Association Between Milk Urea Nitrogen and DHI Production Variables in...

Journal of Dairy Science;  September 1, 2003 ;     700+ words ......association between milk urea nitrogen (MUN) concentration and milk yield...percentage also decreased as MUN increased, but by only 1 mg/dl MUN over the range of 2.2 to...negative relationship with MUN. Holstein cows with milk...percentage >3.2% had lower MUN compared with ...

Statistical Evaluation of Factors and Interactions Affecting Dairy Herd...

Journal of Dairy Science;  August 1, 2005 ;     700+ words ......were used to analyze milk urea nitrogen (MUN) as collected the day of...but for higher FCM yield, MUN declined linearly by 0.05...In multiparous Holsteins, MUN increased by 0.06 and 0.03...interpretation of test-day MUN on commercial herds. Research...the pattern of change in ...

A Comparison of Instruments and Laboratories Used to Measure Milk Urea...

Journal of Dairy Science;  June 1, 2004 ;     700+ words ......used for analysis of milk urea nitrogen (MUN) for bulk-tank milk samples...the variance in measured MUN was attributed to farm-to-farm variance for analysis of MUN by the Bentley, CL 10, Foss...lt;60% of the variance in MUN was attributed to farm-to-fa...slightly different results ...

Use of artificial intelligence to estimate urea nitrogen appearance in...

JPEN, Journal of Parenteral and Enteral Nutrition;  January 1, 2004 ;     484 words ......intelligence (AI) for estimating urea nitrogen appearance (UNA) during critical...urine collected for determination of urea nitrogen excretion. UNA was calculated from the urinary urea nitrogen excretion plus body urea accumulation...

Prediction of Ammonia Emission from Dairy Cattle Manure Based on Milk Urea...

Journal of Dairy Science;  December 1, 2007 ;     700+ words ......and milk urea N (MUN; mg/dL) and to test...UUN excretion and MUN differed among lactation...restricted to very high MUN concentrations. Milk...Key words: milk urea nitrogen, urine urea N excretion...Accordingly, urinary urea N (UUN) excretion...relationship between ...