324 Factors Affecting Growth, Efficiency, and Carcass Quality of Finishing Dairy x Beef Hybrids
نویسندگان
چکیده
Abstract Our objectives were to determine how pre-finishing plane of nutrition, season, and breed beef sire affect performance, efficiency, carcass attributes dairy-beef hybrid calves. Dairy × steers (3 7 d age) maintained on either a moderate nutrition or high from 0 12 wk age. Calves (n = 211, BW 122 ± 16 kg) then transported 689 km the OSU Sparks Beef Research Center at an average age 92 1.6 in four blocks. predominantly Holstein dairies Midwest sired by Angus 147) Continental 64) sires. Steers processed arrival sorted within previous treatment into 4 5 head pens fed receiving diets. transitioned grower diet 14 112. 12% roughage finishing d-112 224. A final 8% was 224 slaughter with ractopamine hydrochloride (300 mg·steer-1·d -1) included last 28-d before harvest. Increasing during milk replacer starter feeding period increased (P ≤ 0.03) initial through 84, but not affected ≥ 0.08) thereafter. received winter spring heavier < 0.01) 168 harvest gained faster growing phase than summer. sires throughout more rapidly breeds. Breed season have large impact performance dairy hybrids.
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ژورنال
عنوان ژورنال: Journal of Animal Science
سال: 2022
ISSN: ['0021-8812', '1525-3163', '1525-3015', '1544-7847']
DOI: https://doi.org/10.1093/jas/skac247.287