Document Detail

Intake, milk yield, and digestion by dairy cows fed diets with increasing fiber content from bermudagrass hay of silage.
MedLine Citation:
PMID:  9684166     Owner:  NLM     Status:  MEDLINE    
Lactating dairy cows were offered diets containing increasing quantities of Tifton 85 bermudagrass hay or silage and increasing dietary neutral detergent fiber (NDF) to determine effects of method of bermudagrass storage and dietary fiber content on intake, milk yield, and nutrient digestion. Bermudagrass was added as hay or silage at the rate of 8.5, 15.9, or 23.3% of dietary dry matter and was substituted for an equal quantity of corn silage. The method of bermudagrass storage did not affect intake [20.8 vs. 20.3 (+/- 0.3) kg/d for bermudagrass hay and silage diets; respectively], but an increase in the amount of bermudagrass and NDF in the diet did reduce intake. Dietary NDF concentration was well above minimum recommendations of the National Research Council. Milk yield was not altered by method of bermudagrass storage but declined as dietary NDF increased. Digestion of NDF tended to be lower for bermudagrass silage than for bermudagrass hay. An increase in the amount of bermudagrass in the diet improved digestion of dietary dry matter, acid detergent fiber, and NDF; however, milk yield declined because total intake declined. Improved NDF digestion caused by added bermudagrass hay or silage was confirmed by in vitro analyses. High quality bermudagrass hybrids could potentially be used in diets of lactating dairy cows because of the good digestion characteristics and relatively small effects on intake despite the high dietary fiber content. Tifton 85 bermudagrass may serve as a forage alternative for lactating dairy cows.
J W West; P Mandebvu; G M Hill; R N Gates
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Journal of dairy science     Volume:  81     ISSN:  0022-0302     ISO Abbreviation:  J. Dairy Sci.     Publication Date:  1998 Jun 
Date Detail:
Created Date:  1998-10-08     Completed Date:  1998-10-08     Revised Date:  2003-11-14    
Medline Journal Info:
Nlm Unique ID:  2985126R     Medline TA:  J Dairy Sci     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  1599-607     Citation Subset:  IM    
University of Georgia, Coastal Plain Station, Tifton 31793-0748, USA.
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MeSH Terms
Cattle / physiology*
Dietary Fiber / administration & dosage*
Fatty Acids, Volatile / metabolism
Hydrogen-Ion Concentration
Lipids / analysis
Milk / chemistry
Milk Proteins / analysis
Rumen / metabolism
Reg. No./Substance:
0/Fatty Acids, Volatile; 0/Lipids; 0/Milk Proteins

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