Herenda D, Jakel O
Agriculture and Agri-Food Canada, Toronto, Ontario.
Can Vet J. 1994 May;35(5):293-6.
During the period April 1991 to March 1992, data concerning the condemnation rate of standard, vegetarian, and free-range chickens were collected and summarized from one federally inspected abattoir in Ontario. The purpose of this study was to discuss the effects of diet, management, and breed of chickens on pathological lesions, ensuing condemnation rates, and consequent losses to the growers and the poultry industry. The data collected at this abattoir revealed that vegetarian chickens showed a higher condemnation rate (5.23%) for disease and nondisease conditions compared with standard (1.48%) and free-range (0.94%) chickens. Free-range chickens were approximately two weeks older than vegetarian and standard chickens at the time of slaughter. The most common causes of condemnation in vegetarian chickens was cellulitis (1.18%), followed by ascites (0.77%). Ascites and cellulitis (0.26% both) were also the most common causes of condemnation in standard chickens. Cyanosis (0.21%) and mutilation (0.17%) represented the highest rate of condemnation in free-range chickens. The low rate of pathological lesions in free-range chickens is a positive trend in poultry disease management.
在1991年4月至1992年3月期间，从安大略省一家联邦检查的屠宰场收集并汇总了有关标准鸡、素食鸡和散养鸡的报废率数据。本研究的目的是探讨鸡的饮食、管理和品种对病理损伤、随后的报废率以及对养殖户和家禽业造成的损失的影响。在这家屠宰场收集的数据显示，与标准鸡（1.48%）和散养鸡（0.94%）相比，素食鸡在疾病和非疾病情况下的报废率更高（5.23%）。散养鸡在屠宰时比素食鸡和标准鸡大约大两周。素食鸡报废的最常见原因是蜂窝织炎（1.18%），其次是腹水（0.77%）。腹水和蜂窝织炎（均为0.26%）也是标准鸡报废的最常见原因。发绀（0.21%）和肢体残缺（0.17%）是散养鸡中报废率最高的情况。散养鸡病理损伤率低是家禽疾病管理中的一个积极趋势。
