Download the full-sized PDF of The effect of pre-calving feed restriction on reproductive performance of beef cowsDownload the full-sized PDF



Permanent link (DOI):


Export to: EndNote  |  Zotero  |  Mendeley


This file is in the following communities:

Roy Berg Kinsella Research Ranch


This file is in the following collections:

Journal Articles (Kinsella Ranch)

The effect of pre-calving feed restriction on reproductive performance of beef cows Open Access


Author or creator
Boadi, D.
Price, M. A.
Additional contributors
beef cows
feed restriction
condition score
Type of item
Journal Article (Published)
One hundred and thirty-four pregnant beef cows (liveweight = 544.3 kg ± 73 3 kg SD; condition score = 3.5 ± 0.3 SD), were randomly assigned in January to five management treatments (combinations of feed restriction and weaning time) to study the effects on calving and rebreeding performance. Twenty-seven were feed-restricted (54.7 MJ DE d−1) for the last 3 mo of pregnancy then realimented (3REST); their calves were weaned in October. Thirty were feed-restricted for the last 3 mo of pregnancy (54.7 MJ DE d−1) and the first 2 mo of lactation (99.6 MJ DE d−1), then their calves were weaned and turned out to graze in June (5REST). The remaining 77 cows (UNREST) were supplemented on range with 153.5 MJ DE d−1 from January until calving. Their calves were weaned in either August (one group of 26 calves directly into a feedlot, a second group of 26 onto unsupplemented range) or October (25 calves directly into a feedlot). All cows grazed together on the range from June onwards. After calving, the restricted (3REST and 5REST) cows were significantly lighter (464.4 and 469.5 kg vs. 506.9 kg) and thinner (condition scores 2.5 and 2.6 vs. 3.0) than the UNREST cows, but the percentage of cows calving calf mortality, assisted births calving dates, udder scores and mean birth weight of calves were not affected (P > 0.05) by pre-calving nutrition. Catch-up growth was evident in both the 3REST and 5REST cows once exposed to higher energy feeding. There were no significant effects (P > 0.05) of the management (nutrition and weaning) treatments on the following year s breeding and calving performance. It is concluded that the combinations of nutrition and weaning used in this study did not necessarily impair calving or rebreeding performance of beef cows, which calved in condition score 2.5 or above.
Date created
License information
@1996 Boadi, D., Price, M. A. This version of this article is open access and can be downloaded and shared. The original author(s) and source must be cited.
Citation for previous publication
Boadi, Dinah. and Price, M.A. (1996). The effect of pre-calving feed restriction on reproductive performance of beef cows. Canadian Journal of Animal Science, 76(3), 337 - 342.
Link to related item

File Details

Date Uploaded
Date Modified
Audit Status
Audits have not yet been run on this file.
File format: pdf (Portable Document Format)
Mime type: application/pdf
File size: 642720
Last modified: 2016:06:24 18:55:14-06:00
Filename: cjas_76(3)_337
Original checksum: 2debc90cb1faeee684430d40f78121a6
Well formed: true
Valid: false
Status message: Invalid page tree node offset=642225
File title: The effects of pre- and early post-calving management on reproductive performance of beef cows
File author: Dinah Boadi, M. A. Price
Activity of users you follow
User Activity Date