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ARS Home » Midwest Area » Madison, Wisconsin » U.S. Dairy Forage Research Center » Research » Publications at this Location » Publication #118599
Title: EFFECT OF CORN SILAGE CONTAINING HIGH OIL, WAXY, MULTILEAF, OR BM3 CORN GENETICS ON FEED INTAKE, MILK YIELD, AND MILK COMPOSITION OF DAIRY COWS

Author
item MOREIRA, VINICIUS - UNIVERSITY OF WISCONSIN
item JIMMINK, J - UNIVERSITY OF WISCONSIN
item Satter, Larry
item VICINI, J - MONSANTO CO
item HARTNELL, G - MONSANTO CO

Submitted to: Journal of Dairy Science
Publication Type: Abstract Only
Publication Acceptance Date: 7/24/2000
Publication Date: N/A
Citation: N/A

Interpretive Summary:

Technical Abstract: This trial was part of a larger three-site experiment to evaluate corn silage hybrids. This part of the experiment involved 144 cows in early lactation. Following a 2-wk covariate period, 72 cows were assigned to one of the six treatments for a 28-d treatment period. A second group of 72 cows followed the same protocol. The five hybrids evaluated were Cargill brown midrib 3 (BMR), Mycogen multileaf-TMF99 (TMF), Asgrow high oil RX 5888TC (HOC), Asgrow waxy RX 5888WX (WX), and Asgrow RX 5888 (control). Diets contained 50 percent forage and 50 percent concentrate, except for one treatment (BMRH) that contained 65 percent forage and 35 percent concentrate. The forage portion of the diets contained 75 percent corn silage and 25 percent alfalfa silage. Main ingredients in the concentrate were high-moisture shelled corn, cotton seed, Soyplus, and soybean meal. Diets were similar in NDF content (average: 30.5 percent), except for the BMRH, which was 34.5 percent. Dietary CP averaged 18.6 percent. Milk production was greatest with BMR and differed from the control, BMRH, and HOC treatments (P less than .04). FCM was greatest for the BMRH treatment, reflecting the much higher fat test. Milk protein percent was lowest for the BMRH. Unreplicated estimates of silage and grain yields are presented.