Institute of Animal Nutritional and Metabolic Disorders, College of Veterinary Medicine, Qingdao Agricultural University, Qingdao, 266109, China.
College of Animal Science and Veterinary Medicine, Tianjin Agricultural University, Tianjin, 300384, China.
Poult Sci. 2018 Jan 1;97(1):118-123. doi: 10.3382/ps/pex261.
The probiotic effects of Lactobacillus rhamnosus strain CF (Chen Fu) on growth performance, meat quality, and microenvironment in specific pathogen-free (SPF) chickens were investigated and compared with Enterococcus faecium. One-hundred-eighty 7-day-old SPF chickens were randomly assigned into 3 groups with 3 replicate pens of 20 chickens each. Group 1 served as a control that was fed a basal diet without probiotics supplementation. Groups 2 and 3 were fed the basal diet supplemented with L. rhamnosus CF and E. faecium, respectively. On d 12 and 24, BW, ADG, feed conversion ratio (FCR), dressing percentage (DP), and apparent digestibility of crude protein (AD-CP) were calculated. Meat color, fat content, shear force, water content, and pH value of breast and thigh muscles; ammonia, urea nitrogen, and uric acid content in plasma; pH value, Enterococcus, Lactobacillus, and E. coli in ceca; and ammonia emission were determined. Compared with group 1, group 2 exhibited higher BW, ADG, AD-CP, DP, cecal Lactobacilli, and muscle fat content (P < 0.05) as well as lower FCR, muscle water content, plasma ammonia, pH value, E. coli, and Enterococcus in ceca, and ammonia emission (P < 0.05), and group 3 exhibited higher BW, ADG, AD-CP, DP, and muscle fat content (P < 0.05), as well as lower FCR, meat color, plasma ammonia, E. coli and Enterococcus in ceca, and ammonia emission (d 24) (P < 0.05). Compared with group 3, group 2 exhibited lower plasma ammonia level, E. coli, and pH value in ceca and ammonia emission (P < 0.05) and higher AD-CP, meat color, pH value in thigh muscles, fat content in breast muscles, and number of Lactobacillus in ceca (P < 0.05). Thus, L. rhamnosus CF improves growth performance, meat quality, and microenvironment and is a potential probiotic additive in chickens.
研究了鼠李糖乳杆菌 CF（Chen Fu）菌株对无特定病原体（SPF）鸡的生长性能、肉品质和微环境的益生菌效应，并与屎肠球菌进行了比较。将 180 只 7 日龄 SPF 鸡随机分为 3 组，每组 3 个重复，每个重复 20 只鸡。第 1 组作为对照组，饲喂基础日粮，不添加益生菌。第 2 组和第 3 组分别饲喂基础日粮，添加鼠李糖乳杆菌 CF 和屎肠球菌。在第 12 天和第 24 天，计算体重、平均日增重、饲料转化率（FCR）、屠宰率（DP）和粗蛋白表观消化率（AD-CP）。测定胸肌和腿肌的肉色、脂肪含量、剪切力、水分含量和 pH 值、血浆中氨、尿素氮和尿酸含量、盲肠中 pH 值、肠球菌、乳酸菌和大肠杆菌含量以及氨排放量。与第 1 组相比，第 2 组的体重、平均日增重、AD-CP、DP、盲肠乳酸菌和肌肉脂肪含量较高（P<0.05），而 FCR、肌肉水分含量、血浆氨、pH 值、盲肠大肠杆菌和肠球菌以及氨排放量较低（P<0.05），第 3 组的体重、平均日增重、AD-CP、DP 和肌肉脂肪含量较高（P<0.05），而 FCR、肉色、血浆氨、盲肠大肠杆菌和肠球菌以及氨排放量（第 24 天）较低（P<0.05）。与第 3 组相比，第 2 组的血浆氨水平、盲肠大肠杆菌和肠球菌以及氨排放量较低（P<0.05），而 AD-CP、肉色、大腿肌肉 pH 值、胸肌脂肪含量和盲肠乳酸菌数量较高（P<0.05）。因此，鼠李糖乳杆菌 CF 改善了鸡的生长性能、肉品质和微环境，是一种有潜力的鸡用益生菌添加剂。
