do Sacramento Ribeiro Julimar, Santos Luana Lira, de Lima Júnior Dorgival Morais, de Albuquerque Mariz Tobyas Maia, Ladeira Márcio Machado, de Azevedo Paulo Sérgio, Lima Carolyny Batista, Dos Santos Silva Maria Josilaine Matos
Campus Arapiraca, Universidade Federal de Alagoas, Av. Manoel Severino Barbosa, s/n, Bom Sucesso, Arapiraca, AL, CEP:57309-005, Brazil.
Department of Animal Science, Universidade Federal de Lavras, Lavras, MG, 37200-000, Brazil.
Trop Anim Health Prod. 2017 Jun;49(5):995-1000. doi: 10.1007/s11250-017-1288-6. Epub 2017 Apr 19.
The effect of the replacement of corn silage with spineless cactus associated with Tifton 85 hay or sugarcane bagasse was evaluated on the performance, body weight components and sheep meat quality. Twenty-one Santa Inês male sheep with initial body weight of 22.9 ± 2.9 kg were used. They were confined in individual stalls for 74 days receiving the following diets: corn silage + concentrate (CS); spineless cactus + Tifton 85 hay + concentrate (TH); spineless cactus + sugarcane bagasse + concentrate (SB). After the feedlot period, the animals were slaughtered and their body components were weighed and sampled. Data were submitted to Tukey's test at 5% probability. The average daily gain (0.25 vs 0.14 kg), cold carcass weight (13.3 vs 13.7 kg), loin muscularity (0.6 vs 0.4 kg) and liver weight (0.7 vs. 0.5 kg) were higher (P < 0.05) for the TH diet when compared to that for the CS. The physical-chemical parameters of meat were not influenced (P > 0.05) by the treatments and presented about 20.1% of crude protein, 6.1% of crude fat and shear force of 2.0 kgf/cm. In complete diets for sheep, Tifton 85 hay associated with spineless cactus provides greater weight gain, cold carcass muscularity and organ weight when compared to those for animals fed with corn silage as exclusive roughage. Sugarcane bagasse associated with spineless cactus may replace corn silage in complete diets for sheep.
评估了用无刺仙人掌替代玉米青贮饲料并搭配蒂夫顿85干草或甘蔗渣对绵羊生产性能、体重组成和羊肉品质的影响。选用21只初始体重为22.9±2.9千克的圣伊内斯雄性绵羊。将它们单独圈养在栏舍中74天，给予以下日粮：玉米青贮饲料+精料（CS）；无刺仙人掌+蒂夫顿85干草+精料（TH）；无刺仙人掌+甘蔗渣+精料（SB）。育肥期结束后，对动物进行屠宰，并对其身体各部分称重和取样。数据采用5%概率的Tukey检验。与CS日粮相比，TH日粮的平均日增重（0.25对0.14千克）、冷胴体重（13.3对13.7千克）、腰部肌肉量（0.6对0.4千克）和肝脏重量（0.7对0.5千克）更高（P<0.05）。日粮处理对肉的理化参数没有影响（P>0.05），粗蛋白含量约为20.1%，粗脂肪含量为6.1%，剪切力为2.0千克力/平方厘米。在绵羊全价日粮中，与以玉米青贮饲料作为唯一粗饲料喂养的动物相比，无刺仙人掌搭配蒂夫顿85干草能使绵羊获得更大的体重增加、冷胴体肌肉量和器官重量。无刺仙人掌搭配甘蔗渣可在绵羊全价日粮中替代玉米青贮饲料。
