JDS
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
QUICK SEARCH:   [advanced]


     

Journal of Dairy Science Vol. 75 No. 6 1588-1603
© 1992 by American Dairy Science Association ®
This Article
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Right arrow reprints & permissions
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Maltz, E.
Right arrow Articles by Shanks, R. D.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Maltz, E.
Right arrow Articles by Shanks, R. D.

Comparative Responses of Lactating Cows to Total Mixed Rations or Computerized Individual Concentrates Feeding

E. Maltz 1, S. Devir 1, O. Kroll 2, B. Zur 3, S. L. Spahr 4, and R. D. Shanks 4

1 Agricultural Research Organization The Volcani Center, Bet Dagan, Israel 50250
2 Israel Cattle Breeders Association, 25 Arlozorove, Tel Aviv, Israel 62488
3 Technion, Institute of Technology, Haifa, Israel 31032
4 University of Illinois, Urbana 61801

A trial was conducted in a commercial dairy herd in which the concentrate part of the ration was fed individually to a group of cows through computerized self-feeders. Performance results were compared with those of a group fed TMR of 65 to 67% concentrates. Rationing of individual concentrates was according to parity, milk yield, milk yield potential, BW changes, and bunk feedstuffs. Mean intake of concentrates per cow was about 1 kg/d lower in the individually supplemented cows. This was partly compensated for by a higher intake of bunk feedstuffs. Overall daily milk yield per cow was similar to those receiving a TMR in first parity cows, higher in second parity cows, and lower in third and greater parity cows. The higher performance of the second parity cows was achieved in all milk yield potential classes, and the lower yield in subsequent lactations was due to lower performance in low and high potential classes. The individually supplemented cows gained less BW than those in the TMR group. Milk yield per unit of BW was better than milk yield as a variable to refine individual cow supplementation strategy for allocation of concentrates. Results also suggest that the same criteria used for supplementation of concentrates can be beneficial to cows' assignments and movements among different TMR groups. Computerized dispensing of concentrates, when applied properly, can economize on consumption of concentrates when grouping and feeding different TMR are impossible.

Key Words: concentrate supplementation • parity • potential • body weight

Submitted on March 11, 1991
Accepted on January 21, 1992




This article has been cited by other articles:


Home page
 J DAIRY SCIHome page
J. Miron, M. Nikbachat, A. Zenou, D. Ben-Ghedalia, R. Solomon, E. Shoshani, I. Halachmi, N. Livshin, A. Antler, and E. Maltz
Lactation Performance and Feeding Behavior of Dairy Cows Supplemented Via Automatic Feeders with Soy Hulls or Barley Based Pellets
J Dairy Sci, November 1, 2004; 87(11): 3808 - 3815.
[Abstract] [Full Text] [PDF]


HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
Copyright © 1992 by the American Dairy Science Association ®.