1. Biswas, A., Bharti, V. K., Deshmukh, P. B., Venkatesan, G. & Srivastava, R. B. Commercial poultry farming in cold arid region of Leh-Ladakh in Innovations in Agro Animal Technologies (eds Srivastava, R. B. & Selvamurthy, W. ) 216–233 (Satish Serial Publishing House, 2011).
2. Jin, L. Z., Ho, Y. W., Abdullah, N. & Jalaludin, S. Probiotics in poultry: mode of action. Worlds Poult. Sci. J. 53, 351–368 (1997).
3. Omar, M. A. E. Economic evaluation of probiotic (Lactobacillus acidophilus) using in different broiler breeds within Egypt. Benha Vet. Med. J. 26, 52–60 (2014).
4. Dibner, J. J. & Richards, J. D. Antibiotic growth promoters in agriculture: history and mode of action. Poult. Sci. 84, 634–643 (2005).
5. Castanon, J. I. History of the use of antibiotic as growth promoters in European poultry feeds. Poult. Sci. 86, 2466–2471 (2007).