Description of the main attributes (origin, gender, age, body condition, and slaughter weight) at slaughter house arrival and their impact on carcass characteristics from cull Quarter Horse
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https://doi.org/10.18633/biotecnia.v24i2.1543Palabras clave:
Equino, cuarto de milla, atributos al sacrificio, rasgos de canalResumen
Para describir los efectos de origen (México y Estados Unidos de América), sexo, edad al sacrificio (AS, 4 categorías), puntaje de condición corporal (BCS, 5 categorías) y peso de faena (SW, 4 categorías) se utilizaron datos de 235 caballos cuartos de milla sacrificados en una misma instalación durante un período de 150 días. Del total, el 74.5 % provenían de EUA, el 80 % fue <15 años y una BCS ≤ 4, la proporción de sexos fue similar (51.5 % hembras vs 48.5 % machos). Los caballos EUA presentaron mayor SW (27 %), circunferencia de pierna (4 %), peso en canal (4.2 %) y rendimiento en canal (2.9 %). El sexo no afectó ninguna característica evaluada. Los caballos de 3 a 8 años presentaron mayor área del ojo de la costilla (REA) y grasa dorsal. Exceptuando la longitud de pierna, las características de la canal aumentaron linealmente a medida que aumentaron BCS y SW. Se concluye que origen, sexo y edad explican poco sobre las características de la canal. El peso al sacrifico explicó principalmente los cambios en las medidas lineales, peso de la canal e índice compacto, mientras que BCS explicó principalmente el rendimiento de la canal y REA.
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