1- Barzehkar, R., A. Salehi, and F. Mahjoubi. 2009. Polymorphisms of the Ovine Leptin Gene and its Association with Growth and Carcass Traits in Three Iranian Sheep Breeds. Iranian Journal of Biotechnology, 7: 241-6. (In Persian).
2- Boucher, D., M. Palin., F. Castonguay., C. Gariepy, and F. Pothier. 2006. Detection of polymorphisms in the ovine leptin (LEP) gene: Association of a single nucleotide polymorphism with muscle growth and meat quality traits. Canadian Journal of Animal Science, 86: 31-5.
3- Buchanan, F. C., C. J. Fitzsimmons., A. G. Van Kessel., T. D. Thue., D. C. Winkelman-Sim, and S. M. Schmutz. 2002. Association of a missense mutation in the bovine leptin gene with carcass fat content and leptin mRNA levels. Genetics Selection Evolution, 34: 105-16.
4- Cauveri, D., S. Sivaselvam., S. Karthickeyan., K. Tirumurugaan, and K. Kumanan. 2014. Allelic polymorphysm of exon3 of leptin gene in nilagiri sheep identified by sequencing and PCR-RFLP. International Journal of Science, Environment and Technology, 3: 951- 5.
5- De, S., M. MacNeil., X. Wu., J. Michal., Q. Xiao., M. Garcia., K. Griffin., C. Gaskins., J. Reeves, and J. Busboom. 2004. Detection of quantitative trait loci for marbling and backfat in Wagyu x Limousin B1 crosses using a candidate gene approach. Journal of Animal Science Supplement, 82(2): 111-114.
6- Fitzsimmons, C.J., S. M. Schmutz., R. D. Bergen, and J. J. McKinnon. 1998. A potential association between the BM 1500 microsatellite and fat deposition in beef cattle. Mammalian Genome, 9: 432-434.
7- Houseknecht, K .L., C. A. Baile., R. L. Matteri, and M. E. Spurlock. 1998. The biology of leptin: a review. Journal of Animal Science, 76: 1405-1420.
8- Huang, D. l., R. J. Chen., Z. P. Yang., Y. J. Mao., Y. L. Li., D. J. Tian., L. Chen, an X. Y. Zhao. 2008. Analysis on associations of SNPs of leptin gene with growth traits in four sheep breeds. Chinese Journal of Animal and Veterinary Sciences, 12: 002 (Abstract).
9- Jonas, E., G. Martin., P. Celi., L. Li., M. Soattin., P. Thomson, and H. Raadsma. 2016. Association of polymorphisms in leptin and leptin receptor genes with circulating leptin concentrations, production and efficiency traits in sheep. Small Ruminant Research, 136: 78-86.
10- Khaldari, M. 2014. The basic of sheep and goat farming (Osoole parvaresh goosfand va boaz). Tehran Jihaad daneshgahi, Tehran, Iran. (In Persian).
11- Khorramtaie, R., M. Nezamabadi., T. Harkinezhad., M. P. Eskandari nasab., M. H. Shahir, and D. Salimi. 2012. Evaluation of directly and ultrasound measurements of muscle and back fat for prediction of Carcass traits of live animals in Afshari sheep. Iranian Journal of Animal Science Research. 22(2): 161-171. (In Persian).
12- Mahmoud, A., A. Saleh., F. Abou-Tarboush., T. Shafey, and M. Abouheif. 2014c. Nucleotide sequence polymorphism within exon 3 region of leptin and prolactin genes in Herri sheep. Research Journal of Biotechnology, 9: 69-72.
13- Mahmoud, A., A. Saleh., N. Almealamah., F. Abou-tarboush., R. Aljumaah., T. Shafey, and M. Abouheif. 2014. Molecular Characterization of Leptin Exon 3 gene in sheep of Saudi Arabia. Research Journal of Biotechnology, 9: 32-35.
14- Roh, S. G., D. Hishikawa., Y. H. Hong, and S. Sasaki. 2006. Control of adipogenesis in ruminants. Animal Science Journal, 77: 472-477.
15- Smithz, M., H. Dolezal., R. Gill, and B. Behrens. 1992. Evaluation of Ultrasound for Prediction of Carcass Fat Thickness and Longissimus Muscle Area in Feedlot Steers1. Journal of Animal Science, 70(1): 29-37.
16- Stone, R., S. Kappes, and C. Beattie. 1996. The bovine homolog of the obese gene maps to chromosome 4. Mammalian Genome, 7: 399-400.
17- Zhou, H., J. G. Hickford, and H. Gong. 2009. Identification of allelic polymorphism in the ovine leptin gene. Molecular Biotechnology, 41: 22-25.