HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via Google Scholar Google Scholar Articles by McCoy, G. C. Articles by Reed, A. Search for Related Content PubMed Articles by McCoy, G. C. Articles by Reed, A.

Complete Feed Rations for Lactating Dairy Cows^{1, 2,}

Department of Animal Industries, Southern Illinois University, Carbondale

ABSTRACT

TRIAL 1. Three methods of feeding, I—long: hay ad libitum plus 1 kg of concentrate per 2.5 kg of FCM; II—long hay and concentrate ad libitum; III—complete feed ad libitum, were compared in a switchback design. The complete feed consisted of a mixture of 70% concentrate and 30% coarsely ground hay (2.54-cm screen). Daily TDN intake was 9.78, 13.49, and 11.56 kg for Treatments I, II, and III, respectively. Mean daily milk production was 17.86,19.23, and 19.70; FCM was 17.11,16.61, and 18.36 kg for Treatments I, II, III, respectively. Treatment III was significnatly greater than I for both milk and FCM yields (P<.05). Milk fat percentages were 3.80, 3.22, and 3.65 for Treatments I, II, and III, respectively.

TRIAL 2. Ad libitum feeding of ground hay, ground corn cobs, and cottonseed hulls complete feeds were compared in a Latin-square changeover design. Mean daily feed intake of the cottonseed hull complete feed (20.2 kg) was greater (P<.01) than the hay or corn cob complete feeds (17.9 and 18.1 respectively). Milk production of the cows on the hay and cottonseed hull complete feeds was 22.0 and 21.9 kg, respectively. This was greater (P<.05) than the 20.8 kg produced by the cows fed the corn cob complete feed. No significant differences in milk composition were observed between the different complete feeds.

¹ Data are from theses submitted by the first and second authors to the Graduate School of Southern Illinois University in partial fulfillment of the requirements for the degree of Master of Science in Animal Industry, August, 1964, and June, 1965.

² This research was partially supported by a grant from Moorman Manufacturing Company, Quincy, Illinois.

³ Present address: Department of Dairy Science, University of Minnesota, St. Paul, Minnesota.

⁴ Present address: Kraft Food, Inc., Kendallville, Indiana.