Phenotypic and Genetic Analysis of Lori-Bakhtiari Lamb's Weight at Different Ages for Autosomal and Sex-Linked Genetic Effects
الموضوعات :م. مراونی 1 , م. وطنخواه 2 , س. عیدیوندی 3
1 - Department of Animal Science, Behbahan Branch, Islamic Azad University, Behbahan, Iran
2 - عضو هیات علمی مرکز تحقیقات و آموزش کشاورزی و منابع طبیعی شهرکرد
3 - Department of Animal Science, Behbahan Branch, Islamic Azad University, Behbahan, Iran
الکلمات المفتاحية: weight, autosomal and sex-linked, Lori-Bakhtiari lambs, non-genetic factor,
ملخص المقالة :
The data set used in this study contained 8793 records of lamb's weight (kg) from 320 sires and 2349 dams collected during 1989 to 2014 from the Lori-Bakhtiari flock at Shooli station in Shahrekord, Iran. Non-genetic factors and genetic parameters (partitioned into autosomal, sex-linked and maternal) of lamb's weight at different ages were estimated using without and with sex-linked genetic effects models. The results showed that the overall mean of lamb’s weight were 5.01, 28.93, 41.42, 51.33 and 56.52 kg at birth, weaning, 6, 9 and 12 months of age, respectively. The effect of fixed factors; year and month of birth, age of dam, sex of lamb, type of birth; dam body weight and age of lamb (days) as linear covariate were significant (P
Assan N. and Makuza S. (2005). The effect of non-genetic factors on birth weight and weaning weight in three sheep breeds of Zimbabwe. Asian-Australasin J. Anim. Sci. 18(2), 151-157.
Atkins K. (1980). Non-genetic factors affecting body weight in sheep. Australian J. Exp. Agric. Anim. Husb. 20, 272-279.
Ceyhan A., Kaygisiz A. and Sezenler T. (2011). Effect of inbreeding on pre-weaning growth traits and survival rate in Sakiz sheep. J. Anim. Plant Sci. 21(1), 1-4.
Fernando R.L. and Grossman M. (1990). Genetic evaluation with autosomal and X-chromosomal inheritance. Theor. Appl. Genet. 80, 75-80.
Fina M., Varona L., Piedrafita J. and Casellas J. (2012). Sources of sire-specific genetic variance for birth and weaning weight in Bruna dels Pirineus beef calves. Animal. 6(12), 931-1938.
Galal E., Aboul-Naga E., Elatawil E. and Kishin E. (1972). Estimates of combining abilities and maternal influence in crosses between Merino, Ossimi and Barkie sheep. Anim. Prod. 15, 47-52.
Gamasaee V., Hasan S., Ahmadi H., Baneh H., Farhadi A. and Mohamadi A. (2010). Estimation of genetic parameters for body weight at different ages in Mehraban sheep. African J. Biotechnol. 9(32), 5218-5223.
Gholizadeh M. and Ghafouri-Kesbi F. (2015). Estimation of genetic parameters for growth-related traits and evaluating the results of a 27-year selection program in Baluchi sheep. Small Rumin. Res. 130, 8-14.
Henderson C.R. (1976). A simple method for computing the inverse of a numerator relationship matrix used in prediction of breeding values. Biometrics. 32, 69-83.
Hussain A., Akhtar P., Ali S., Javed K., Younas M., Shakoor A. and Waheed U. (2014). Genetic analysis of post-weaning growth traits of Thalli sheep under tropical conditions. Trop. Anim. Health Prod. 46, 1527-1531.
Lalit Malik Z.S., Dalal D.S., Dahiya S.P., Magotra A. and Patil C.S. (2016). Genetics of growth traits in sheep: A review. Int. J. Rec. Res. Life Sci. 3(2), 12-18.
Meyer K. (2013). WOMBAT- A Program for Mixed Model Analyses by Restricted Maximum Likelihood. User Notes, Animal Genetics and Breeding Unit, Armidale, Australia.
Mohammadi K., Beygi Nassiri M.T., Fayazi J. and Roshanfekr H. (2010). Investigation of environmental factors influence on pre-weaning growth traits in Zandi lambs. J. Vet. Anim. Adv. 9(6), 1011-1014.
Mokhtari M.S., Rashidi A. and Mohammadi Y. (2008). Estimation of genetic parameters for post-weaning traits of Kermani sheep. Small Rumin. Res. 80, 22-27.
Petrovic M., Muslic D., Petrovic V. and Maksimovic N. (2011). Influence of environmental factors on birth weight variability of indigenous Serbian breeds of sheep. African J. Biol. 10(22), 4673-4676.
Prince L.L.L., Chopra A., Gowane G.R. and Arora A.L. (2010). Factors affecting growth in Avikalin sheep. Indian Vet. J. 87, 1104-1108.
Rashidi A., Mokhtari M.S., Safi Jahanshahi A. and Mohammad Abadi M.R. (2008). Genetic parameter estimates of pre-weaning growth traits in Kermani sheep. Small Rumin. Res. 74, 165-171.
Safari E., Fogarty N.M. and Gilmour A.R. (2005). A review of genetic parameter estimates for wool, growth, meat and reproduction traits in sheep. Livest. Prod. Sci. 92, 271-289.
SAS Institute. (2000). SAS®/STAT Software, Release 9.2. SAS Institute, Inc., Cary, NC. USA.
Simeonov M.S., Harmon D.L. and Nedelkov K.V. (2015). Non-genetic factors affecting birth weight in the lambs of Blackheads Pleven breed. J. Anim. Sci. Adv. 5(3), 1208-1217.
Van Raden P.M. (1987). Evaluations of sires based on sons and on maternal grandsons. J. Dairy Sci. 70(1), 185-192.
Vatankhah M., Moradi Shahrebabak M., Nejati Javaremi A., Miraei Ashtiani S.R. and Vaez Torshizi R. (2005). Review of growth traits parameters for some Iranian breeds of sheep. Anim. Sci. J. (Pajouhesh and Sazandegi). 69, 19-28.
Vatankhah M., Talebi M.A. and Blair H. (2016). Genetic analysis of Lori-Bakhtiari lamb survival rate up to yearling age for autosomal and sex-linked. Small Rumin. Res. 136, 121-126.
