Document Detail

Yield response of lactating Holstein dairy cows to dietary fish meal and bone meal.
MedLine Citation:
PMID:  9406088     Owner:  NLM     Status:  MEDLINE    
Experiments were conducted to examine the effects of the source and amount of dietary protein on yield and composition of milk from Holstein dairy cows. Study 1 used 36 multiparous cows at 125 +/- 59 d in milk in, a replicated 2 x 2 Latin square design. Treatments were diets formulated to contain 16% crude protein (CP) in which 11% was fish meal or meat and bone meal supplied 11% of dietary CP. Intakes of dry matter, CP, and net energy for lactation; yields of milk; and percentage of milk fat were not affected by treatment. Fish meal increased contents of milk total N, casein N, and noncasein N but did not increase contents of NPN; fish meal also tended to increase milk CP yields. Study 2 used 78 cows (31 primiparous) at 31 +/- 2 d in milk in a randomized block design. Two treatment diets were formulated to contain 16 or 18.5% CP, and soybean meal was the sole source of supplemental protein in those diets. The two other treatment diets were, formulated to contain 16% CP; in these diets, fish meal or meat and bone meal partially replaced soybean meal. Treatments did not influence yield or composition of milk from multiparous cows. Compared with a soybean meal diet containing 16% CP, a soybean meal diet containing 18.5% CP or diets containing 16% CP and containing meat and bone meal or fish meal increased the milk, yield of primiparous cows similarly. Fish meal or meat and bone meal increased the efficiency of protein utilization for milk yield.
J M Akayezu; W P Hansen; D E Otterby; B A Crooker; G D Marx
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Journal of dairy science     Volume:  80     ISSN:  0022-0302     ISO Abbreviation:  J. Dairy Sci.     Publication Date:  1997 Nov 
Date Detail:
Created Date:  1998-01-08     Completed Date:  1998-01-08     Revised Date:  2007-11-15    
Medline Journal Info:
Nlm Unique ID:  2985126R     Medline TA:  J Dairy Sci     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  2950-63     Citation Subset:  IM    
Department of Animal Science, University of Minnesota, St. Paul 55108, USA.
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MeSH Terms
Biological Products
Caseins / analysis
Cattle / physiology*
Dietary Proteins / administration & dosage*
Energy Intake
Fish Products*
Lactation / physiology*
Lipids / analysis
Milk / chemistry
Nitrogen / analysis
Reg. No./Substance:
0/Biological Products; 0/Caseins; 0/Dietary Proteins; 0/Lipids; 0/Minerals; 68409-75-6/bone meal; 7727-37-9/Nitrogen

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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