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

IF 0.5 Q4 BIOTECHNOLOGY & APPLIED MICROBIOLOGY

Biotecnia Pub Date : 2022-06-06 DOI:10.18633/biotecnia.v24i2.1543

B. I. Castro-Pérez, Felipe de Jesus Gamboa del Real, Octavio Carrillo Muro, Pedro Hernandez Briano, Alejandro Rivera Villegas, Alberto Barreras Serrano, Alejadro Plascencia Jorquera, Alfredo Estrada Angulo, Jesus David Urias Estrada, Jairo Ivan Aguilera Soto

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Abstract

In order to describe the effects of origin (Mexico and United States of America), sex, age at slaughter (AS, 4categories), body condition score (BCS, 5 categories) and slaughter weight (SW, 4 categories) on carcass characteristics of culled quarter horses, data from 235 horses sacrificed in the same slaughter facility within a 150 days period wereanalyzed. Overall, 74.5% were from the US, 80% were < 15 years of age and had BCS ≤ 4, and sex proportion was similar(51.5% female vs 48.5% males). Horses from USA had heavierSW (27%), leg circumference (4%), carcass weight (4.2%) and carcass yield (2.9%). Sex did not affect any characteristics evaluated. Horses from 3 to 8 years had greater rib eye area(REA) and backfat thickness. Except for leg length, as BCS and SW improved, all carcass characteristics linearly increased as BCS and SW increased. It is concluded that origin, sex, and age, explained very little on the carcass characteristics. The slaughter weight mainly explained changes in linear measures,carcass weight, and compact index, while BCS mainly explained carcass yield and REA.

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屠宰场到达时的主要属性（来源、性别、年龄、身体状况和屠宰重量）的描述及其对扑杀四分之一马胴体特性的影响

为了描述原产地（墨西哥和美利坚合众国）、性别、屠宰年龄（AS，4类）、身体状况评分（BCS，5类）和屠宰重量（SW，4类。总体而言，74.5%的人来自美国，80%的人年龄小于15岁，BCS≤4，性别比例相似（女性51.5%，男性48.5%）。来自美国的马具有更重的SW（27%）、腿围（4%）、胴体重量（4.2%）和胴体产量（2.9%）。性别不影响评估的任何特征。3至8岁的马具有较大的肋眼面积（REA）和后掌厚度。除腿长外，随着BCS和SW的提高，所有胴体特性都随着BCS、SW的增加而线性增加。得出的结论是，出身、性别和年龄对胴体特征的解释很少。屠宰重量主要解释线性指标、胴体重量和紧凑指数的变化，而BCS主要解释胴体产量和REA。

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来源期刊

Biotecnia BIOTECHNOLOGY & APPLIED MICROBIOLOGY-

自引率

33.30%

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