Percent roughage in corn and milo complete feeds
Olson, H.H.; Santos, K.A.S.; McCoy, G.C.
Journal of Dairy Science 57(10): 1260-1262
ISSN/ISBN: 0022-0302 DOI: 10.3168/jds.s0022-0302(74)85049-6
In a reversal design 24 Holstein cows were fed on complete feeds with 40% cottonseed husks (CSH) and milo with 15.3% protein in the feed; or maize (17.1% protein) or 30% CSH with milo (15.1% protein) or maize (16.3% protein). The periods were of 5 weeks, with the first 2 weeks for adjustment. weeks for adjustment. Mean daily intakes of feed and DM were similar on all diets. Milk yields and protein and solids-not-fat contents were also similar, but milk of cows given 40% CSH with maize had a higher fat content than on the other diets. There was no difference in gross efficiency among feeds and no digestive disturbance. Cows given 40% CSH with maize had the highest molar percentage of acetic acid and the highest acetic:propionic ratio in the rumen but there was no other difference in effect of diets on volatile fatty acids.