Defence Institute of High Altitude Research (DIHAR), DRDO, C/o- 56 APO, Leh-Ladakh, (J&K), 194101, India.
Sci Rep. 2017 Apr 11;7:46074. doi: 10.1038/srep46074.
Identification of appropriate breeds of broilers and development of new feed additives is required for the development of poultry industry at high altitude. Therefore, this experiment was conducted first to identify the suitable broiler strain for this region. One week old chicks (150) from three broiler strains, i.e. Vencobb, RIR cross-bred, and Hubbard were randomly selected and divided equally into three groups. All the chicks were provided the same basal diet. The body weight gain and feed: gain responses were significantly (P < 0.05) improved in RIR cross-bred. Mortality was also observed lower in RIR cross-bred. Thereafter, the second trial was conducted in RIR cross-bred to evaluate the effect of probiotic supplementation (T1@ 9 gm/kg feed, T2@ 18 gm/kg feed) on their performance and mortality. No significant differences (P > 0.05) were observed in weight gain, feed intake, feed: gain, and water intake among the three groups, however, mortality from ascites and coccidiosis was reduced in probiotic treated groups. Hence, our results suggest that RIR cross-bred is suitable for rearing in high altitude regions and probiotic supplementation has no beneficial effects on production performance of broilers at high altitude. However, probiotic supplementation indicated lesser loss due to mortality of birds.
为了在高海拔地区发展家禽业，需要鉴定适合的肉鸡品种并开发新的饲料添加剂。因此，本实验首先进行了适宜该地区的肉鸡品种的鉴定。从三个肉鸡品种（Vencobb、RIR 杂交和 Hubbard）中随机选择 150 只 1 周龄的小鸡，并将它们平均分为三组。所有小鸡都提供相同的基础日粮。RIR 杂交组的体重增加和饲料：增重反应显著提高（P<0.05），死亡率也较低。然后，在 RIR 杂交组中进行了第二次试验，以评估益生菌补充剂（T1@9gm/kg 饲料，T2@18gm/kg 饲料）对其性能和死亡率的影响。在体重增加、饲料摄入、饲料：增重和水摄入方面，三组之间没有观察到显著差异（P>0.05），然而，益生菌处理组的腹水和球虫病死亡率降低。因此，我们的结果表明，RIR 杂交种适合在高海拔地区饲养，益生菌补充剂对高海拔地区肉鸡的生产性能没有有益影响。然而，益生菌补充剂表明由于鸟类死亡率降低导致的损失较小。
