Department of Poultry, Faculty of Agriculture, Zagazig University, Zagazig, 44511, Egypt.
Animal Production Research Institute, Agriculture Research Center, Dokki, Giza, 12618, Egypt.
Trop Anim Health Prod. 2024 Oct 8;56(8):331. doi: 10.1007/s11250-024-04172-y.
This experiment was designed to explore how different types of probiotics affect the growth, carcass traits, and seasonal variations in growing New Zealand White rabbits (NZW). Two parallel experiments using the same strain of NZW during winter and summer, each alone from 5 to 13 weeks of age. Each experiment uses a total of 125 unsexed rabbits. These rabbits are separated into 5 groups of 25 rabbits each. Each group has five replicates, with five rabbits in every replicate. In each experiment, 1st group acting as the control group did not receive any probiotics. The 2nd was given a dose of 1 ml of Bifidobacterium bifidum, the 3rd received a dose of 1 ml of Lactobacillus acidophilus, and the 4th was treated with a 1 ml blend of both Bifidobacterium bifidum and Lactobacillus acidophilus, and 5th group was treated with 1 ml of Saccharomyces cerevisiae. Results indicated that the Bifidobacterium bifidum group had the best live body weight (LBW) values and daily weight gain (DWG). Meanwhile, during summer, the Lactobacillus acidophilus group had the best feed conversion ratio (FCR) and performance index (PI) values. Also, growing rabbits fed Lactobacillus acidophilus and Bifidobacterium bifiduim had significantly increased carcass traits during the summer and winter seasons. Furthermore, seasonal changes indicated that the Bifidobacterium bifiduim group improved LBW, DWG, and PI during summer than winter. So, it could be concluded that using Bifidobacterium bifidum can enhance rabbit growth by improving feed utilization and carcass traits, making it an effective addition to hot weather diets.
本实验旨在探讨不同类型的益生菌对生长、胴体特性和生长新西兰白兔（NZW）季节性变化的影响。在冬季和夏季使用相同品系的 NZW 进行了两项平行实验，每个实验从 5 至 13 周龄单独进行。每个实验共使用 125 只未分性别的兔子。这些兔子被分为 5 组，每组 25 只。每组有 5 个重复，每个重复有 5 只兔子。在每个实验中，第 1 组作为对照组不接受任何益生菌。第 2 组给予 1ml 双歧杆菌剂量，第 3 组给予 1ml 嗜酸乳杆菌剂量，第 4 组给予 1ml 双歧杆菌和嗜酸乳杆菌混合物剂量，第 5 组给予 1ml 酿酒酵母剂量。结果表明，双歧杆菌组的活体重（LBW）和日增重（DWG）值最佳。同时，在夏季，嗜酸乳杆菌组的饲料转化率（FCR）和性能指数（PI）值最佳。此外，夏季和冬季饲养嗜酸乳杆菌和双歧杆菌的生长兔的胴体特性显著增加。此外，季节性变化表明，双歧杆菌组在夏季比冬季提高了 LBW、DWG 和 PI。因此，可以得出结论，使用双歧杆菌可以通过提高饲料利用率和胴体特性来促进兔子生长，使其成为炎热天气饮食的有效补充。
