Caracterización de las canales ovinas producidas en México
REVISTA MEXICANA DE CIENCIAS PECUARIAS(2017)
摘要
One thousand (1,000) sheep carcasses produced in Mexico were characterized. Data were processed through descriptive statistics and using a totally random design. From total carcasses, 82.2 % were males and 17.8 % females. Fifty three (53) genotypes (11 pure breeds and 42 different crosses) were identified. Slaughter weight averaged 43.2 +/- 7.2 kg (20.4 to 85.7), cold carcass weight averaged 22.0 +/- 4.1 kg (11.3 to 50.0) carcass yield was 50.0 +/- 5.1 % (34.7 to 73.5), rib eye area averaged 14.8 +/- 3.8 cm(2) (2.7 to 29.7), subcutaneous fat thickness had a mean of 3.1 +/- 1.6 mm (1.0 to 10.0) and pH averaged 5.5 +/- 0.2 (5.0 to 6.5). The intensive production system showed higher values in slaughter weight, cold carcass weight and rib eye area (44.4 +/- 5.9 kg, 22.8 +/- 3.3 kg and 15.5 +/- 3.6 cm2, respectively) than the semi-intensive system (43.6 +/- 5.3 kg, 19.9 +/- 3.1 kg and 13.8 +/- 2.5 cm2) and extensive system (36.4 +/- 9.7, 19.6 +/- 2.6 kg and 9.6 +/- 2.6 cm2). Males had higher values than females in slaughter weight (44.3 +/- 6.7 vs 40.1 +/- 6.1 kg), cold carcass weight (22.2 +/- 3.8 vs 21.2 +/- 4.4 kg) and rib eye area (15.2 +/- 3.7 vs 12.7 +/- 3.7 cm2). The great diversity in phenotypes and different lamb conditions caused considerable variability in carcass traits, which limits the formal lamb market, so sheep domestic production should be reordered towards a more uniform quality condition.
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关键词
Characterization,Sheep,Quality,Carcass
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