Tehran University of Medical Sciences Iranian Journal of Microbiology 2008-3289 11 5 2019 11 12 Improves in external and internal egg quality of Japanese quail (Coturnix coturnix japonica) by giving lactic acid bacteria as alternative antibiotic growth promoter 406 411 Widya Lokapirnasari Department of Animal Husbandry, Faculty of Veterinary Medicine, Universitas Airlangga, Surabaya, Indonesia Anam Arif Department of Animal Husbandry, Faculty of Veterinary Medicine, Universitas Airlangga, Surabaya, Indonesia Soeharsono Soeharsono Department of Anatomy Veteriner, Faculty of Veterinary Medicine, Universitas Airlangga, Surabaya, Indonesia Anisah Fathinah Department of Animal Husbandry, Magister of Veterinary Agribusiness, Faculty of Veterinary Medicine, Universitas Airlangga, Surabaya, Indonesia Rifqi Najwan Department of Animal Husbandry, Magister of Veterinary Agribusiness, Faculty of Veterinary Medicine, Universitas Airlangga, Surabaya, Indonesia Hana Pramuda Wardhani Department of Animal Husbandry, Magister of Veterinary Agribusiness, Faculty of Veterinary Medicine, Universitas Airlangga, Surabaya, Indonesia Nabil Noorrahman Department of Animal Husbandry, Magister of Veterinary Agribusiness, Faculty of Veterinary Medicine, Universitas Airlangga, Surabaya, Indonesia Khoirul Huda Department of Animal Husbandry, Magister of Veterinary Agribusiness, Faculty of Veterinary Medicine, Universitas Airlangga, Surabaya, Indonesia Nuria Ulfah Department of Animal Husbandry, Magister of Veterinary Agribusiness, Faculty of Veterinary Medicine, Universitas Airlangga, Surabaya, Indonesia Andreas Yulianto Department of Animal Husbandry, Magister of Veterinary Agribusiness, Faculty of Veterinary Medicine, Universitas Airlangga, Surabaya, Indonesia 2019 06 12 2019 09 22 Background and Objectives: An experiment was designed to determine the effect of using lactic acid bacteria as alternative antibiotic growth promoters on external and internal quality of egg’s Coturnix coturnix japonica. Materials and Methods: Coturnix coturnix japonica (n=240, 14 weeks of age) were randomly distributed into six treatment groups. The treatments were P0 (free antibiotic feed), P1 (free antibiotic feed with 1 gram antibiotic growth promoters (AGP)/100kg feed), P2 (free antibiotic feed with 5 gram probiotic/100kg feed), P3 (free antibiotic feed with 10 grams probiotic/100kg feed), P4 (free antibiotic feed with 5 gram probiotic/200L drinking water), and P5 (free antibiotic feed with 10 gram probiotic/200L drinking water). Probiotic contained Lactobacillus casei (L. casei) and Lactobacillus rhamnosus (L. rhamnosus) culture (1.2 x 108 CFU/gram). To assess the quality parameters, twenty eggs were randomly collected from each treatment at the end of the experimental period, and the data were analysed using one way Anova. Results: Results of the external quality indicated that egg’s weight, length, and width, along with the shell weight and thickness were significantly different (P<0.05) after treatment. Likewise, the results of internal egg quality indicated that yolk color, height, width, and length, together with the albumen height, width, length, index and haugh unit were significantly different (P <0.05) after treatment. Conclusion: It was concluded from this research that dietary supplementation with probiotic which contains L. casei and L. rhamnosus could be used in laying Japanese quail with benefit on external and internal egg quality. https://ijm.tums.ac.ir/index.php/ijm/article/view/2209 https://ijm.tums.ac.ir/index.php/ijm/article/download/2209/1196