Evaluation of Probiotic Potential of Some Native Lactobacillus Strains on Intestine Morphology of Japanese Quails in Rearing Period

The objective of the present study was to evaluate the probiotic effects of different concentrations of four selected native Lactobacillus strains on intestine morphology of female Japanese quails. To do this, the farm trial was performed in the format of complete randomized design through 4 replicates of 7 different probiotic treatments, with each replicate consisting of 20 quails, resulting in a total of 560 quails, for five weeks. Treatments were as follows: T1: control (basal diet); T2: Primalac; T3: Protexin; and T4, T5, T6, and T7: four native strains in levels 50, 100, 150, and 200 g/ton diet, respectively. The greatest villus height in the duodenum was related to treatment with native probiotic 150 g/ton and the greatest of villus height in jejunum and ileum was related to treatment with native probiotic 50 g/ton and 150 g/ton, respectively. The greatest and lowest villus height to the crypt depth ratio in the duodenum and ileum was found in the diet white native probiotic 150 g/ton and control treatment respectively. The greatest and lowest villus height to the crypt depth ratio in the jejunum was found in the diets with native probiotics (50 g/ton, 150 g/ton) and control treatment, respectively. Finally, it can be concluded that the use of the native Lactobacillus strains (150 g/ton diet) enhanced the villus height, villus height to the crypt depth ratio and improve the production performance of Japanese quails. The results indicated that the mixture of four Lactobacillus strains had a probiotic potential on Japanese quail