Effects of somatotropin and duodenal infusion of amino acids on nutrient passage to duodenum and performance of dairy cows

Four multiparous Holstein cows were used in a 4 X 4 Latin square to investigate the effects of bST and postruminal infusion of lysine and methionine on ruminal fermentation, flow of nutrients to the small intestine, and animal performance. The treatments were 1) control; 2) control plus 24 g of lysi...

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Veröffentlicht in:Journal of dairy science 1991-09, Vol.74 (9), p.3117-3127
Hauptverfasser: Lynch, G.L. (BASF Corporation, Parsippany, NJ), Klusmeyer, T.H, Cameron, M.R, Clark, J.H, Nelson, D.R
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container_end_page 3127
container_issue 9
container_start_page 3117
container_title Journal of dairy science
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creator Lynch, G.L. (BASF Corporation, Parsippany, NJ)
Klusmeyer, T.H
Cameron, M.R
Clark, J.H
Nelson, D.R
description Four multiparous Holstein cows were used in a 4 X 4 Latin square to investigate the effects of bST and postruminal infusion of lysine and methionine on ruminal fermentation, flow of nutrients to the small intestine, and animal performance. The treatments were 1) control; 2) control plus 24 g of lysine and 8 g of methionine/d; 3) control plus 25 mg of bST/d; and 4) control plus 25 mg of bST/d plus 24 g of lysine and 8 g of methionine/d. Intakes of DM, OM, CP, starch, NDF, and ADF were similar among treatments. Ruminal characteristics, flow of nutrients to the small intestine, and total tract apparent digestibilities of nutrients were not affected by injection of bST or postruminal infusion of lysine and methionine in this short-term experiment. Milk production, 4% FCM, milk fat percentage and yield, and production of milk CP were increased by administering bST. Postruminal infusion of lysine and methionine did not affect milk production or composition
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(BASF Corporation, Parsippany, NJ)</au><au>Klusmeyer, T.H</au><au>Cameron, M.R</au><au>Clark, J.H</au><au>Nelson, D.R</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Effects of somatotropin and duodenal infusion of amino acids on nutrient passage to duodenum and performance of dairy cows</atitle><jtitle>Journal of dairy science</jtitle><addtitle>J Dairy Sci</addtitle><date>1991-09-01</date><risdate>1991</risdate><volume>74</volume><issue>9</issue><spage>3117</spage><epage>3127</epage><pages>3117-3127</pages><issn>0022-0302</issn><eissn>1525-3198</eissn><coden>JDSCAE</coden><abstract>Four multiparous Holstein cows were used in a 4 X 4 Latin square to investigate the effects of bST and postruminal infusion of lysine and methionine on ruminal fermentation, flow of nutrients to the small intestine, and animal performance. The treatments were 1) control; 2) control plus 24 g of lysine and 8 g of methionine/d; 3) control plus 25 mg of bST/d; and 4) control plus 25 mg of bST/d plus 24 g of lysine and 8 g of methionine/d. Intakes of DM, OM, CP, starch, NDF, and ADF were similar among treatments. Ruminal characteristics, flow of nutrients to the small intestine, and total tract apparent digestibilities of nutrients were not affected by injection of bST or postruminal infusion of lysine and methionine in this short-term experiment. Milk production, 4% FCM, milk fat percentage and yield, and production of milk CP were increased by administering bST. Postruminal infusion of lysine and methionine did not affect milk production or composition</abstract><cop>Savoy, IL</cop><pub>Am Dairy Sci Assoc</pub><pmid>1779065</pmid><doi>10.3168/jds.S0022-0302(91)78497-X</doi><tpages>11</tpages><oa>free_for_read</oa></addata></record>
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subjects Ammonia - analysis
Animals
BACTERIA
Biological and medical sciences
Cattle - physiology
COMPOSICION QUIMICA
COMPOSITION CHIMIQUE
DIGESTIBILIDAD
DIGESTIBILITE
Digestion - drug effects
Digestive System Physiological Phenomena
Duodenum - physiology
Eating - drug effects
Fatty Acids, Volatile - analysis
Feed and pet food industries
Female
FERMENTACION
FERMENTATION
Food industries
Fundamental and applied biological sciences. Psychology
Growth Hormone - pharmacology
HORMONAS PITUITARIAS
HORMONE HYPOPHYSAIRE
Hydrogen-Ion Concentration
INTESTIN
INTESTINOS
Lactation - drug effects
LAIT
LECHE
LISINA
LYSINE
Lysine - administration & dosage
Lysine - pharmacology
METHIONINE
Methionine - administration & dosage
Methionine - pharmacology
METIONINA
Milk - analysis
Milk - secretion
Nitrogen - metabolism
RENDEMENT LAITIER
RENDIMIENTO LECHERO
RUMEN
Rumen - chemistry
Rumen - metabolism
SINTESIS DE PROTEINAS
SYNTHESE PROTEIQUE
VACAS LECHERAS
VACHE LAITIERE
title Effects of somatotropin and duodenal infusion of amino acids on nutrient passage to duodenum and performance of dairy cows
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