[Afolayan R., Fogarty N., Gilmour A., Ingham V., Gaunt G., Cummins L. (2008). Reproductive performance and genetic parameters in first cross ewes from different maternal genotypes. J. Anim. Sci., 86: 804-814.]Search in Google Scholar
[Amou Posht-e- Masari H., Shadparvar A.A., Ghavi Hossein- Zadeh N., Hadi Tavatori M.H. (2013). Estimation of genetic parameters for reproductive traits in Shall sheep. Trop. Anim. Health Prod., 45: 1259-1263.]Search in Google Scholar
[Bayeriyar M., Khaltabadi Farahani A.H., Moradi Shahrebabak H. (2011). Estimation of genetic parameters for economic important traits in Moghani Iranian sheep. Afr. J. Biotechnol., 10: 14678-14683.]Search in Google Scholar
[Bourdon R.M. (2000). Understanding animal breeding. 2nd edition. Prentice-Hall Inc., New Jersey.]Search in Google Scholar
[Duguma G., Schoeman S.J., Cloete S.W.P., Jordaan G.F. (2002). Genetic and environmental parameters for productivity in Merinos. S. Afr. J. Anim. Sci., 32: 154-159.]Search in Google Scholar
[Ekiz B., Ozcan M., Yilmaz A., Ceyhan A. (2005). Estimates of phenotypic and genetic parameters for ewe productivity traits of Turkish Merino (Karacabey Merino) sheep. Turk. J. Vet. Anim. Sci., 29: 557-564.]Search in Google Scholar
[Eteqadi B., Ghavi Hossein- Zadeh N., Shadparvar A.A. (2014). Population structure and inbreeding effects on body weight traits of Guilan sheep in Iran. Small Rumin. Res., 119: 45-51.]Search in Google Scholar
[Gallivan C. (1996). Breeding objectives and selection index for genetic improvement of Canadian sheep. Ph.D. Thesis. University of Guelph, 174 pp.]Search in Google Scholar
[Ghavi Hossein- Zadeh N., Ardalan M. (2010). Estimation of genetic parameters for body weight traits and litter size of Moghani sheep, using Bayesian approach via Gibbs sampling. J. Agr. Sci., 148: 363-370.]Search in Google Scholar
[Hanford K.J., Van Vleck L.D., Snowder G.D. (2005). Estimates of genetic parameters and genetic change for reproduction, weight and wool characteristics of Rambouillet sheep. Small Rumin. Res., 57: 175-186.]Search in Google Scholar
[Hanford K.J., Van Vleck L.D., Snowder G.D. (2006). Estimates of genetic parameters and genetic trend for reproduction, weight and wool characteristics of Polypay sheep. Livest. Prod. Sci., 102: 72-82.]Search in Google Scholar
[Matika O., Van Wyk J.B., Erasmus G.J., Baker R.L. (2003). Genetic parameter estimates in Sabi sheep. Livest. Prod. Sci., 79: 17-28.]Search in Google Scholar
[Menéndez Buxadera A., Alexandre G., Mandonnet N. (2004). Discussion on the importance, definition and genetic components of the number of animals born in the litter with particular emphasis on small ruminants in tropical conditions. Small Rumin. Res., 54: 1-11.]Search in Google Scholar
[Meyer K. (2006). WOMBAT - Aprogram for mixed model analyses by restricted maximum likelihood. User notes. Animal Genetics and Breeding Unit, Armidale, 55 pp.]Search in Google Scholar
[Mohammadabadi M.R., Sattayi Mokhtari R. (2013). Estimation of (co)variance components of ewe productivity traits in Kermani sheep. Slovak J. Anim. Sci., 46: 45-51.]Search in Google Scholar
[Mohammadi H., Moradi Shahrebabak M., Moradi Shahrebabak H., Vatankhah M. (2012). Estimation of genetic parameters of reproductive traits in Zandi sheep using linear and threshold models. Czech J. Anim. Sci., 57: 382-388.]Search in Google Scholar
[Mohammadi H., Moradi Shahrebabak M., Moradi Shahrebabak H. (2013). Analysis of genetic relationship between reproductive vs. lamb growth traits in Makooei ewes. J. Agric. Sci. Technol., 15: 45-53.]Search in Google Scholar
[Mokhtari M., Rashidi A., Esmailizadeh A. (2010). Estimates of phenotypic and genetic parameters for reproductive traits in Kermani sheep. Small Rumin. Res., 88: 27-31.]Search in Google Scholar
[More O ’ Ferrall G.J. (1975). Acomparison of sheep breeds and crosses for ewe productivity. Ir. J. Agric. Res., 14: 285-296.]Search in Google Scholar
[Ramatsoma N., Banga C., Lehloenya K., Gibson R. (2015). Estimation of genetic parameters for live weight in South African Holstein cattle. Open J. Anim. Sci., 5: 242-248.]Search in Google Scholar
[Rashidi A., Mokhtari M.S., Esmailizadeh A.K., Asadi Fozi M. (2011). Genetic analysis of ewe productivity traits in Moghani sheep. Small Rumin. Res., 96: 11-15.]Search in Google Scholar
[Rosati A., Mousa E., Van Vleck L.D., Young L.D. (2002). Genetic parameters of reproductive traits in sheep. Small Rumin. Res., 43: 65-74.]Search in Google Scholar
[Safari E., Fogarty N.M., Gilmour A.R. (2005). Areview of genetic parameters estimates for wool, growth, meat and reproduction traits in sheep. Livest. Prod. Sci., 92: 271-289.]Search in Google Scholar
[Snowder G.D. (2002). Composite trait selection for improving lamb production. Sheep and Goat Res. J., 17: 42-49.]Search in Google Scholar
[Van Wyk J.B., Fair M., Cloete S.W.P. (2003). Revised models and genetic parameter estimates for production and reproduction traits in the Elsenburg Dormer sheep stud. S. Afr. J. Anim. Sci., 33:213-222.]Search in Google Scholar
[Vanimisetti H.B., Notter D.R., Kuhen L.A. (2007). Genetic (co)variance components for ewe productivity traits in Katahdin sheep. J. Anim. Sci., 85: 60-68.]Search in Google Scholar
[Vatankhah M. (2005). Definingaproper breeding scheme for Lori-Bakhtiari sheep in village system. Ph.D. Thesis. University of Tehran, 207.]Search in Google Scholar
[Vatankhah M., Talebi M.A. (2008). Heritability estimates and correlations between production and reproductive traits in Lori-Bakhtiari sheep in Iran. S. Afr. J. Anim. Sci., 38: 110-118.]Search in Google Scholar
[Vatankhah M., Talebi M.A., Edriss M.A. (2008). Estimation of genetic parameters for reproductive traits in Lori-Bakhtiari sheep. Small Rumin. Res., 74: 216-220.]Search in Google Scholar