摘要
The effect of the administration of milk fermented with lactic acid bacteria to calves was evaluated. The strains included were: Lactobacillus murinus CRL1695, Lact. mucosae CRL1696, Lact. johnsonii CRL1693, and Lact. salivarius CRL1702, which were selected for their beneficial and functional properties and isolated from healthy calves in the northwestern region of Argentina. The trial was conducted on a dairy farm located in Tucumán (Holando-Argentino calves). A randomized controlled trial was performed in which 56 new-born animals were divided into two groups: the treated group (T) received the fermented milk for 60 days and the control group (C) only milk. The animals were fed a solid diet ad libitum. The treated group was given a daily dose of 1 × 109CFU of the probiotic fermented milk while the control group was fed milk. Body weight and biometrical parameters were recorded between 15 and 60 days of age, and average daily gain was calculated with three samplings per animal throughout the trial. Rectal swabs and fecal and blood samples were also collected. Results showed the efficacy of the probiotic: lower morbidity and mortality of calves (morbidity was 69.20% in animals without the probiotic, and 46.15% in probiotic-treated animals, with P = 0.09; mortality in C was 34.61 and 7.69% in animals fed with ferment milk; P = 0.02).The calves fed with probiotic evidenced an improvement in nutritional parameters, body condition and weight gain (health index P = 0.01; average daily gain P = 0.03).Viable bacterial numbers showed no differences between the two experimental groups. Hematological parameters and serum proteins were not modified by the treatment. The results suggest that the fermented milk containing lactic acid bacteria can be a viable veterinary product for young calves due to its beneficial effects on health and growth.
摘要译文
评估了将用乳酸菌发酵的乳给予小牛的效果。包括的菌株是：Lactobacillus murinus CRL1695，Lact。粘膜CRL1696，Lact。 johnsonii CRL1693和Lact。 salivarius CRL1702，因其有益和功能特性而被选中，并从阿根廷西北部的健康小牛中分离出来。该试验在位于Tucumán（Holando-Argentino小牛）的奶牛场进行。进行随机对照试验，将56只新生动物分成两组：治疗组（T）接受发酵乳60天，对照组（C）仅接受乳汁。给动物随意喂食固体饮食。给予治疗组每日剂量为益生菌发酵乳的1×10 9 CFU，而对照组喂食乳汁。在15至60日龄之间记录体重和生物统计学参数，并且在整个试验期间通过每只动物的三次采样计算平均日增重。还收集了直肠拭子和粪便和血液样本。结果显示益生菌的功效：降低犊牛的发病率和死亡率（没有益生菌的动物的发病率为69.20％，益生菌治疗的动物的发病率为46.15％，P = 0.09; C喂养的动物死亡率为34.61和7.69％用发酵乳喂养; P = 0.02）。用益生菌喂养的小牛证明了营养参数，身体状况和体重增加的改善（健康指数P = 0.01;平均日增重P = 0.03）。活细菌数量显示两者之间没有差异实验组。治疗未改变血液学参数和血清蛋白质。结果表明，含有乳酸菌的发酵乳由于其对健康和生长的有益作用，可以成为幼犊的可行兽医产品。
N. C. Maldonado[1]]J. Chiaraviglio[2]]E. Bru[1]]L. De Chazal[3]]V. Santos[3]]M. E. F. Nader-Macías[1]]. Effect of Milk Fermented with Lactic Acid Bacteria on Diarrheal Incidence, Growth Performance and Microbiological and Blood Profiles of Newborn Dairy Calves[J]. Probiotics and Antimicrobial Proteins, 2018,10(4): 668–676