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 Lister, E. E. Articles by Pigden, W. J. Search for Related Content PubMed Articles by Lister, E. E. Articles by Pigden, W. J.

Performance of Holstein-Friesian Steers Fed an All-Concentrate Ration Diluted with Ground Hay ¹

Animal Research Institute, Canada Department of Agriculture, Ottawa, Canada

ABSTRACT

Thirty-six Holstein-Friesian steers (two pens of six animals each per treatment) were group fed a barley-based all-concentrate diet (C), Diet C diluted with 20% ground hay (D), or Diet C diluted with 40% ground hay (E) from an initial live weight of 200 kg to a final live weight of 385 kg. Average daily gain was significantly (P < .05) depressed by Diet E (0.99 vs. 1.13 and 1.12 ± 0.02 kg for E vs. C and D, respectively). Feed efficiency was significantly (P < .05) different among all diets (6.36, 7.30, and 8.82 ± 0.08 kg feed per kilogram gain for C, D, E, respectively). The digestibility of energy, determined with sheep, was significantly (P < .05) different among the three diets (77.2, 70.9, and 64.2 ± 1.3% for C, D, E, respectively). Based on these digestion coefficients, steers on Diet E consumed significantly (P < .05) more digestible energy per kilogram of weight gain than those on C or D (17.58, 18.70, and 21.31 ± 0.31 Meal for Diets C, D, E, respectively). Ration E produced a significantly (P < .05) higher yield of prime rib and lower yield of chuck (per cent of chilled carcass) than C or D (9.8, 27.1; 9.7, 26.7; 10.4 ± 0.11, 25.0 ± 0.34 for Diets C, D, E, respectively).

¹ Contribution no. 302, Animal Research Institute.