Feeding value of opaque 2 corn grain and corn silage for lactating dairy cows

Andrew, S.M.; Clark, J.H.; Davis, C.L.

Journal of Dairy Science 62(10): 1619-1625

1979


ISSN/ISBN: 0022-0302
DOI: 10.3168/jds.s0022-0302(79)83470-0
Accession: 005454390

Download citation:  
Text
  |  
BibTeX
  |  
RIS

Article/Abstract emailed within 0-6 h
Payments are secure & encrypted
Powered by Stripe
Powered by PayPal

Abstract
Lactating cows (40) were fed 1 of 4 diets containing combinations of regular or opaque-2 corn grain and corn silage in a 2 .times. 2 factorial arrangement for 112 days to determine the feeding value of opaque-2 corn grain and corn silage. Milk production and milk composition were similar for all treatments. Type of corn had no effect on feed intake or efficiency of feed conversion to 4% fat-corrected milk. The apparent digestibilities of organic matter, crude protein, ether extract, N-free extract and total digestible nutrient content were greater for diets containing opaque-2 corn grain compared to diets containing regular corn grain. Acid detergent fiber digestibility was greater for regular corn grain than for opaque-2 corn grain. Opaque-2 corn and regular corn appear to be equal in feeding value for lactating cows.