Influence of wet vs. dry by-product ingredients and addition of branched-chain volatile fatty acids and valerate to dairy diets. 2. Rumen fermentation and milk production.

Authors

  • P.H. Robinson
  • S. Tamminga
  • A.M. van Vuuren

DOI:

https://doi.org/10.18174/njas.v35i4.16704

Abstract

Four dairy cows with large rumen cannulae were fed totally mixed diets twice daily. Diets contained equal amounts of hay crop silage and maize silage to a total of about 43% of DM intake. About 35% of DM intake was derived from the by-product ingredients maize gluten feed, beet pulp, and brewers' grains, and the balance was mixed ingredients. Diets were formulated to contain either wet (WET) or dry (DRY) by-product ingredients with (PLUS) or without (MINUS) a supplement containing isobutyrate, 2-methyl butyrate, 3-methyl butyrate, and valerate. Measurements were made from wk 12 to 28 of lactation to determine effects of treatments on feed intake, parameters of rumen fermentation, and milk yield and composition. Milk yield and composition were not influenced by treatments. (Abstract retrieved from CAB Abstracts by CABI’s permission)

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Published

1987-11-01

Issue

Vol. 35 No. 4 (1987)

Section

Papers

License

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