Escorcia Magdalena, Sánchez-Godoy Félix, Ramos-Vidales David, Medina-Campos Omar Noel, Pedraza-Chaverri José
Departamento de Medicina y Zootecnia de Aves, Facultad de Medicina Veterinaria y Zootecnia-UNAM, Av. Universidad 3000, Colonia, C.U., Coyoacán CDMX 04510, Mexico.
Centro de Enseñanza, Investigación y Extensión en Producción Avícola CEIEPAv-UNAM, Tláhuac, D.F. Manuel M. López s/n, Santa Ana Poniente, Tláhuac CDMX 13300, Mexico.
Vet Sci. 2020 May 26;7(2):69. doi: 10.3390/vetsci7020069.
Chicken meat is a food of high nutritional quality; its production requires birds called broilers breeders and looking after all aspects that influence their reproductive capacity. An ongoing controversy exists among researchers related to the weight of the rooster and its fertilization capacity. By histological and biochemical tests, the association between weight and age with oxidant damage, testicular parenchyma and antioxidant capacity was evaluated in Ross 308 roosters. Testicular integrity was assessed by histological analysis, oxidative stress was determined by malondialdehyde content, non-enzymatic antioxidant capacity was determined by oxygen radical absorbance capacity assay and enzymatic antioxidant capacity through glutathione peroxidase, glutathione reductase and glutathione-S-transferase activities. Histological analysis showed vacuolization of the epithelium from the seminiferous tubules. A significant negative association was observed between malondialdehyde and the deterioration of the integrity of the seminiferous epithelium, as well as between age and integrity of the seminiferous epithelium. It became evident that oxidative damage directly affects the quality of testicular parenchyma. Weight and age were not associated with the antioxidant enzymes activities, but with non-enzymatic capacity. The data obtained suggest that weight is not the most important factor that influences the fertility of the rooster.
鸡肉是一种营养品质很高的食物；其生产需要名为肉种鸡的禽类，并要关注影响它们繁殖能力的各个方面。研究人员之间就公鸡体重与其受精能力存在持续的争议。通过组织学和生化测试，在罗斯308公鸡中评估了体重和年龄与氧化损伤、睾丸实质及抗氧化能力之间的关联。通过组织学分析评估睾丸完整性，通过丙二醛含量测定氧化应激，通过氧自由基吸收能力测定评估非酶抗氧化能力，并通过谷胱甘肽过氧化物酶、谷胱甘肽还原酶和谷胱甘肽-S-转移酶活性测定酶抗氧化能力。组织学分析显示生精小管上皮出现空泡化。观察到丙二醛与生精上皮完整性恶化之间以及年龄与生精上皮完整性之间存在显著的负相关。很明显，氧化损伤直接影响睾丸实质的质量。体重和年龄与抗氧化酶活性无关，但与非酶能力有关。获得的数据表明，体重不是影响公鸡繁殖力的最重要因素。
