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1982
Counting the number of permanent anterior (incisor plus canine) teeth is a well-established method for estimating physiological age in cattle. In this study, 1295 observations were made on cows and heifers representing five breed types and ranging in age from 475 to 2035 days. None of the breed...
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1982
A fully functional grading or classification system must allow trading in carcasses and meat to be conducted without the buyer needing to inspect the product personally. To achieve this, the system must accurately indicate the quantity of meat, the intrinsic quality of the meat, and any aspects...
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The influence of Zeranol on feedlot performance and carcass traits of culled cows and heifers
Download1982
A total of 126 cows and heifers culled from the University of Alberta beef herd were used in an experiment to study the effects of zeranol, an anabolic growth stimulant. The cattle were divided into two groups: 67 aged less than 4 yr (young) and 59 aged more than 4 yr (mature); within each group,...
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1983
Makarechian, M., Tennessen, T., Mathison, G. W., Price, M. A.
Fifty-three cross-bred bulls, aged 5–7 mo, were divided at random into a nonimplanted control group of 26 bulls and a treatment group of 27 bulls, which were each implanted with 36 mg of zeranol on the 1st, 81st, and 155th day of the experiment. They were fed a high energy diet ad libitum for 168...
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The influences of feed energy level on growth and carcass traits in bulls of two breed types
Download1984
Makarechian, M., Butson,S., Price, M. A.
A serial slaughter experiment is described using 48 yearling bulls: 24 Hereford crossbred (HX) and 24 Beef synthetic (SY). Twelve bulls of each breed type were fed a high-energy, mainly grain diet (Hi) and the other 12 a pelleted alfalfa diet (Lo). The two breed types showed similar growth rate...
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1984
Tennessen, T., Berg, R. T., Price, M. A.
Seven groups of six bulls and seven groups of six steers were transported separately by truck for either 10 min or 2 h. Body weight, rectal temperature, respiratory rate, serum cortisol, and a chute score were recorded before and after trucking. Heart rate was monitored by telemetry in one animal...
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1985
Chaudhary, Z. I., Price, M. A., Makarechian, M.
The effects of zeranol were studied in 24 steers and 24 bulls starting at an average weight of 200 kg for a trial period of 183 days. Bulls grew faster than steers (P = 0.07) and zeranol-treated cattle showed higher average daily gain than controls (P < 0.05); there was no significant interaction...
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1985
Price, M. A., Butson, S., Chaudhary, Z. I., Makarechian, M.
Thirty-two cull cows aged from 1 to 13 yr were allocated to five age groups and fed individually for 82 days, then slaughtered. Half of the cows within each group were implanted with 36 mg of zeranol. Zeranol had no significant effect on average daily gain, feed efficiency or backfat thickness,...
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Patterns of muscle, bone and fat accretion in three biological types of feedlot bulls on three dietary energy levels
Download1985
Patterson, D. L., Price, M. A., Berg, R. T.
The data used in this study consisted of 119 075 complete lactation records accumulated by record of performance (ROP) from 1976 to 1981. Each individual record consisted of 7, 8 or 9 monthly test day milk weights and corresponding fat percentage. The data for each breed (Ayrshire, Guernsey,...
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Sex differences in carcass composition and tissue distribution in mature double muscled cattle
Download1986
Berg, R. T., Price, M. A., Shahin, K. A.
Nineteen mature Double Muscled (DM) cattle consisting of 11 cows and eight bulls were slaughtered between 470 and 710 kg to determine the influence of sex on carcass composition and muscle, bone and fat in DM cattle. Expressed as a percentage of the total side weight, DM bull carcasses had 15%...