Evaluation of methionine availability to dairy cows when added to mechanically extracted soybean meal with soy gums

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dc.contributor.author Brake, D.W.
dc.contributor.author Titgemeyer, Evan C.
dc.contributor.author Bradford, Barry J.
dc.contributor.author Macgregor, C.A.
dc.date.accessioned 2012-09-07T15:39:44Z
dc.date.available 2012-09-07T15:39:44Z
dc.date.issued 2012-09-07
dc.identifier.uri http://hdl.handle.net/2097/14648
dc.description Dairy Research, 2011 is known as Dairy Day, 2011 en_US
dc.description.abstract Twenty-five Holstein cows were fed 5 different diets to evaluate amounts of metabolizable methionine provided to dairy cows from a mechanically extracted soybean meal (meSBM) with methionine added during manufacture. The control diet was designed to be deficient in metabolizable methionine supply. Two amounts of methionine were added from either a commercially available ruminally protected product (RPMet) or from a meSBM with methionine added during manufacture (meSBM-Met). Average milk yield was 98.8 lb/day, average milk fat was 2.81%, and milk urea nitrogen (MUN) averaged 8.6 mg/dL. Milk protein yield was not responsive to metabolizable methionine supply, suggesting that milk protein yield was not an optimal criterion for assessing metabolizable methionine supply. Milk protein content was greater when methionine was provided as RPMet than meSBM-Met. In addition, RPMet linearly increased plasma free methionine, but meSBM-Met did not. Body condition score (BCS; 1=thin and 5 =fat) was increased linearly by meSBM-Met, but responses were quadratic to RPMet. Methionine added to meSBM during manufacture did not appear to be available to dairy cows, likely because of extensive ruminal degradation. en_US
dc.publisher Kansas Agricultural Experiment Station and Cooperative Extension Service en_US
dc.relation.isPartOf Dairy Day, 2011 en_US
dc.relation.isPartOf Kansas Agricultural Experiment Station contribution; no. 12-176-S en_US
dc.relation.isPartOf Report of progress (Kansas Agricultural Experiment Station and Cooperative Extension Service); 1057 en_US
dc.subject Dairy en_US
dc.subject Methionine en_US
dc.subject Dairy cow en_US
dc.subject Soybean meal en_US
dc.title Evaluation of methionine availability to dairy cows when added to mechanically extracted soybean meal with soy gums en_US
dc.type Conference paper en_US
dc.date.published 2011 en_US
dc.citation.epage 25 en_US
dc.citation.spage 20 en_US
dc.contributor.authoreid etitgeme en_US
dc.contributor.authoreid bbradfor en_US

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