Włodarczyk Karol, Kokoszyński Dariusz, Saleh Mohamed, Piwczyński Dariusz
Department of Animal Breeding and Nutrition, Bydgoszcz University of Science and Technology, 85084 Bydgoszcz, Poland.
Department of Poultry Production, Sohag University, Sohag 82524, Egypt.
Animals (Basel). 2022 May 22;12(10):1320. doi: 10.3390/ani12101320.
Raising dual-purpose hens for meat is believed to bring more economic benefits to farmers selling products directly to consumers. The aim of the study was to determine the differences between the carcass features and the digestive system of multipurpose hens and spent broiler breeders. In the experiment, 20 carcasses of 70-week-old Rosa 1 dual-purpose hens and 20 carcasses of 62-week-old Ross 308 broiler breeders were used. Measurements of the length of various sections of the intestine and the diameter of individual intestinal segments were made. During the gutting, proventriculus, gizzard, liver, heart, and spleen were separated and then weighed. Dual-purpose hens differed significantly (p < 0.05) from broiler breeders in weight and carcass dimensions. Multipurpose hens were characterized by significantly lower (p < 0.05) percentages of breast muscles, leg muscles, skin with subcutaneous fat, wings, and carcass remainders. Broiler breeders were characterized by significantly longer (p > 0.05) total intestinal length, duodenum, jejunum, ileum, and terminal intestine. Significant differences were confirmed in terms of the diameter of some segments of the intestine. Broiler breeder hens also had a greater mass of internal organs compared to the dual-purpose layer hens.
饲养兼用型母鸡用于产肉被认为能给直接向消费者销售产品的农民带来更多经济效益。本研究的目的是确定兼用型母鸡和淘汰蛋种鸡的胴体特征及消化系统之间的差异。在实验中，使用了20只70周龄的罗莎1号兼用型母鸡的胴体和20只62周龄的罗斯308蛋种鸡的胴体。对肠道各段的长度和各肠段的直径进行了测量。在去内脏过程中，分离出腺胃、肌胃、肝脏、心脏和脾脏，然后称重。兼用型母鸡与蛋种鸡在体重和胴体尺寸方面存在显著差异（p < 0.05）。兼用型母鸡的胸肌、腿肌、带皮下脂肪的皮肤、翅膀和胴体剩余部分的百分比显著较低（p < 0.05）。蛋种鸡的总肠道长度、十二指肠、空肠、回肠和末端肠道显著更长（p > 0.05）。在某些肠段的直径方面也证实了存在显著差异。与兼用型蛋鸡相比，蛋种鸡的内脏器官质量也更大。
