A comparison of production traits and welfare implications between horned and polled beef bulls
1996
Stookey, J.M. | Goonewardene, L.A.
Data from two record of performance test stations (ROP) were used to compare selected traits of polled and horned bulls. The University of Saskatchewan (SASK) ROP test station provided data on 578 Charolais (CH) and 375 Hereford (HE) bulls from 1985 to 1992, while the Alberta (ALTA) Hereford ROP station provided data on 1485 HE bulls from 1985 to 1993. Polled and horned CH bulls from SASK showed similar (P > 0.05) on-test average daily gain (ADO) while polled HE bulls from SASK showed significantly higher (P < 0.03) ADG than their horned counterparts (1.41 +/- 0.01 and 1.36 +/- 0.02 respectively). Polled CH bulls were 11.4% fatter than horned bulls at the end of the test (P < 0.01). No significant differences in ADG, weight per day of age (WPDA) or scrotal circumference (SC) were observed between polled and horned HE bulls in ALTA. These results show no disadvantage for polled bulls compared to horned for AW, WPDA, adjusted SC and adjusted yearling weight. From a welfare perspective, it may be advantageous to use polled bulls to circumvent the need for dehorning.
اظهر المزيد [+] اقل [-]الكلمات المفتاحية الخاصة بالمكنز الزراعي (أجروفوك)
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