Effect of crop residues in haylage-based rations on the performance of pregnant beef cows

Wood, K. M., Kelly, M. J., Miller, S. P., Mandell, I. B. and Swanson, K. C. (2010) Effect of crop residues in haylage-based rations on the performance of pregnant beef cows. Canadian Journal of Animal Science, 90 1: 69-76. doi:10.4141/CJAS09070

Author Wood, K. M.
Kelly, M. J.
Miller, S. P.
Mandell, I. B.
Swanson, K. C.
Title Effect of crop residues in haylage-based rations on the performance of pregnant beef cows
Journal name Canadian Journal of Animal Science   Check publisher's open access policy
ISSN 0008-3984
Publication date 2010-03
Sub-type Article (original research)
DOI 10.4141/CJAS09070
Volume 90
Issue 1
Start page 69
End page 76
Total pages 8
Place of publication Ottawa, ON, Canada
Publisher Agricultural Institute of Canada
Language eng
Formatted abstract
Seventy-one individually fed multiparous, pregnant crossbred beef cows [body weight (BW) ± SD; 730 ± 77.9 kg] were used to examine the effects of including crop residues in alfalfa/grass haylage-based rations on BW gain, fat deposition/loss and plasma metabolites. The haylage control ration (CON; n = 23) was modified to include either 40% (dry matter basis) wheat straw (WS; n = 24) or 40% corn stalklage (CS; n = 24). Cows were blocked by calving date and randomly assigned to each treatment and fed for 82 d leading up to the earliest calving date. On days 1, 40, and 82, cows were weighed, ultrasounded to measure subcutaneous backfat (BF) over the ribs, body condition scored (BCS) and plasma was collected. Calves from cows fed WS had greater (P = 0.02 ) weaning weights than cows fed CS, but did not differ (P = 0.23) from CON. CS cows had the lowest ADG (P < 0.03), lost the most body condition (P < 0.04), and had the lowest dry matter intake (P ≤ 0.001). These data indicate that diets containing crop residues can be used to dilute high-quality haylage rations for wintering beef cows; however, diets containing 40% corn stalklage used in this experiment may not be advisable, since cows lost BW and fat, and their calves had the poorest calf performance up to weaning.
Keyword Beef cattle
Wheat straw
Winter feeding
Corn stalklage
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: Queensland Alliance for Agriculture and Food Innovation
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