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Estimated variance components and breeding values for pre-weaning growth criteria in Romney sheep
Abstract
This study was carried out to investigate variance components, direct heritability, maternal genetic parameters, estimated breeding values and factors affecting pre-weaning growth criteria of Romney sheep. Data were collected over the period from 2006 to 2012 with records of 4989 lambs descended from 76 rams and 2190 ewes of Romney sheep maintained at S. Island of New Zealand via Gene Marker Lab., Faculty of Agric. and Life Sci., Lincoln Univ., New Zealand. Results proved that genetic and non-genetic factors affecting studied criteria had significant effects (P<0.05). Genetic and environmental estimates of live body weights at birth (LBW), weaning (LWW) and Kleiber ratio (KR) were 0.20±0.074, 0.15±0.042 and 0.14±0.052 for direct heritability (h2a±SE); 0.59±0.219, 0.41±0.023 and 0.08±0.002 for maternal heritability (h2m±SE); 0.11684, 2.6378 and 0.27565 for additive variances (σ2a), 0.34596, 7.1179 and 0.14532 for maternal variances (σ2m); and 0.002395, 10.1262 and 0.509339 for permanent environmental variances (σ2e), respectively. EBV’s of LBW, LWW and KR ranged from -0.555: 0.502, -1.554: 3.006 and -0.633: 0.242 direct, -0.863: 0.954, -4.942: 2.554 and -0.469: 0.179 maternal for rams, respectively; and -0.664: 0.830, -2.996: 4.586 and -1.651: 0.677 direct, 1.429: 1.142, -7.541: 4.920 and -1.223: 0.492 maternal for ewes, respectively. Results suggest the importance of considering the non-genetic factors in pre-weaning growth performance of lambs. Moderate heritability and positive coefficients of phenotypic and genetic correlation for studied criteria indicate to the possibility of improving them using traditional selection.
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Abbas SF, Abd-Allah M, Allam FM, Aboul-Ellah AA. 2010. Growth performance of Rahmani and Chios lambs weaned at different ages. Aust J Basic Appl Sci. 4:1583-1589.
Abbasi MA, Abdollahi-Apanahi R, Maghsoudi A, VaezTorshizi R, Nejati-Javaremi A. 2012. Evaluation of models for estimation of genetic parameters and maternal effects for early growth traits of Iranian Baluchi sheep. Small Rumin Res. 104:62-69. doi: 10.1016/j.smallrumres.2011.10.003.
Abegaz S, van Wyk JB, Olivier JJ. 2005. Model comparisons and genetic and environmental parameter estimates of growth and the Kleiber ratio in Horro sheep. S Afr J Anim Sci. 35:30-40.
Aksoy Y, UlutaÅŸ Z, Åžen U, Åžirin E, Åžahin A. 2016. Estimates of genetic parameters for different body weights and muscle and fat depths of Karayaka lambs. Turk J Vet Anim Sci. 40:13-20. doi: 10.3906/vet-1504-16.
Analla M, Munoz-Scrrano A, Serradila JM. 1997. Analysis of the genetic relationship between litter size and weight traits is Segurena sheep. Can J Anim Sci. 77:17-21.
Arthur PF, Renand G, Krauss D. 2001. Genetic and phenotypic relationships among different measures of growth and feed efficiency in young Charolais bulls. Livest Prod Sci. 68:131-139. doi: 10.1016/S0301-6226(00)00243-8.
Assan N, Mabuku O, Musasira M. 2011. Estimation of covariance components and genetic parameters for weaning weight in Matebele goat, Sabi, Dorper and Mutton Merino sheep. J Anim Sci Adv. 1:38-46.
Bedhiaf S, Bouix J, Clement V, Bibe B, Francois D. 2000. Choice importance of analysis model for the estimation of genetic parameters of growth of meat sheep in Tunisia. 7èmes Rencontres autour des Recherches sur les Rum. Paris (France): Institut National de la Recherche Agronomique. p. 169-172.
Boldman KG, Kriese LA, Van Vleck LD, Van Tassell CP, Kachman SD. 1995. A manual for use of [MTDFREML] A Set of programs to obtain estimates of variances and covariances. Washington DC (USA): USDA/AES.
Bradford GE. 1972. The role of maternal effects in animal breeding: VII Maternal effects in sheep. J Anim Sci. 35:1324-1334.
Chaudhry MZ, Shah SK. 1985. Heritability and correlation of birth weight, weaning weight and 12 month weight in Lohi, Awassi, Hissardale and Kacchi sheep. Pak Vet J. 5:67-71.
El-Awady HG, Oudah SM, Shalaby NA, El-Arian MN, Metawi HR. 2011. Genetic improvement study on pre-weaning body weight of Egyptian Rahmani lambs under a pure breeding production system. In: Bernués A, Boutonnet JP, Casasús I, Chentouf M, Gabiña D, Joy M, López-Francos A, Morand-Fehr P, Pacheco F, editors. Economic soc. Options Méditerranéennes Série A Séminaires Méditerranéens. 100:311-316.
Esmailizadeh AK, Miraei-Ashtiani SR, Mokhtari MS, Asadi Fozi M. 2011. Growth performance of crossbred lambs and productivity of Kurdi ewes as affected by the sire breed under extensive production system. J Agric Sci Technol. 13:701-708.
Everett-Hincks JM, Mathias-Davis HC, Greer GJ, Auvray BA, Dodds KG. 2014. Genetic parameters for lamb birth weight, survival and death risk traits. J Anim Sci. 92:2885-2895. doi: 10.2527/jas.2013-7176.
Farokhad ML, Nassiri MTB, Roshanfekr H, Fayazi J, Mamouei M. 2010. Genetic parameters for direct and maternal effects on growth traits of Arman lambs. Res J Biol Sci. 1:71-74. doi: 10.3923/rjbsci.2010.71.74.
Farokhad ML, Roshanfekr H, Amiri S, Mohammadi K, Mirzadeh K. 2011. Genetic trends estimation for some of the growth traits in Arman sheep. J Anim Vet Adv. 10:1801-1803. doi: 10.3923/javaa.2011.1801.1803.
Ghafouri-Kesbi F. 2013. (Co) variance components and genetic parameters for growth rate and Kleiber ratio in fat-tailed Mehraban sheep. Arch Tierz. 56:564-572. doi: 10.7482/0003-9438-56-055.
Ghafouri-Kesbi F, Abbasi MA, Afraz F, Babaei M, Baneh H, Abdollahi Arpanahi R. 2011. Genetic analysis of growth rate and Kleiber ratio in Zandi sheep. Trop Anim Health Prod. 43:1153-1159. doi: 10.1007/s11250-011-9816-2.
Ghafouri-Kesbi F, Eskandarinasab MP. 2008. An evaluation of maternal influences on growth traits, the Zandi sheep breed of Iran as an example. J Anim Feed Sci. 17:519-529. doi: 10.22358/jafs/66679/2008.
Gizaw S, Lemma S, Komen H, Johan AM. 2007. Estimates of genetic parameters and genetic trends for live weight and fleece traits in Menz sheep. Small Rumin Res. 70:145-153. doi: 10.1016/j.smallrumres.2006.02.007.
Gowanea GR, Princea LLL, Lopesb FB, Paswana C, Sharma RC. 2015. Genetic and phenotypic parameter estimates of live weight and daily gain traits in Malpura sheep using Bayesian approach. Small Rumin Res. 128:10-18. doi: 10.1016/j.smallrumres.2015.04.016.
Hall DG, Fogarty NM, Gilmour AR. 1995. Performance of crossbred progeny of Trangie fertility Merino and Booroola Merino rams and Poll Dorset ewes 1 Lamb birth weight, survival and growth. Aust J Experimental Agric. 35:1069-1074.
Hassen Y, Fuerst-Waltl B, SÖlkner J. 2003. Genetic parameter estimates for birth weight, weaning weight and average daily gain in pure and crossbred sheep in Ethiopia J Anim Sci. 120:29-38. doi: 10.1046/j.1439-0388.2003.00361.x.
Ibrahim AHM. 2015. Variability of prion protein (PrP) gene and its association with productive performance in Barki lambs. J Am Sci. 11:89-96.
Jeichitra V, Rajendran R, Karunanithi K, Rahumathulla PS. 2015. Comparison of three methods for estimating breeding values of Mecheri rams for body weights. Indian J Anim Res. 49:161-164.
Kleiber M. 1947. Body size and metabolic rate. Physiol Rev. 27:511-541.
Lobo AMBO, Lobo RNB, Paiva ASR, Oliveira SMPD, Faco O. 2009. Genetic parameters for growth, reproductive and maternal traits in a multi-breed meat sheep population. Genet Mol Biol J. 32:761-770. doi: 10.1590/S1415-47572009005000080.
Mandal A, Dass G, Rout PK. 2012. Genetic analysis of growth and feed conversion efficiency of Muzaffarnagari lambs under intensive feeding system. Int J Livest Prod. 3:47-52. doi: 10.5897/IJLP12.007.
Maria GA, Boldman KG, VanVleck LD. 1993. Estimates of variances due to direct and maternal effects for growth traits of Romanov sheep. J Anim Sci. 71:845-849.
MÃ rquez GC, Huresign W, Davies MH, Emmans GC, Reehe R, Bunger L, Simm G, Lewis RM. 2012. Index selection in terminal sires improves early lambs growth. J Anim Sci. 90:142-151. doi: 10.2527/jas.2011-4294.
Matika O, van Wyk JB, Erasmus GJ, Baker RL. 2001. Phenotypic and genetic relationships between lamb and ewe traits for the Sabi sheep of Zimbabwe. S Afr J Anim Sci. 313:215-221.
Meyer K. 1992. Variance components due to direct and maternal effects for growth traits of Australian beef cattle. Livest Prod Sci. 31:179-204.
Miraei-Ashtiani SR, Seyedalian SAR, Shahrbabak MM. 2007. Variance components and heritabilities for body weight traits in Sangsari sheep, using univariate and multivariate animal models. Small Rumin Res. 73:109-114. doi: 10.1016/j.smallrumres.2006.12.002.
Mokhtari MS, Shahrebabak MM, Shahrebabk HM, Sadeghi M. 2012. Estimation of (co)variance components and genetic parameters for growth traits in Arman sheep. J Livest Sci Technol. 38-47.
Mohammadi K, Aghaei A, Mizadeh KH, Motaghinia G. 2010a. Investigation of maternal effect on early growth traits in Arabi lambs, using single trait animal models. J Anim Sci Vet Adv. 9:1712-1716. doi: 10.3923/javaa.2010.1712.1716.
Mohammadi Y, Rashidi A, Mokhtari MS, Esmailizadeh AK. 2010b. Quantitative genetic analysis of growth traits and Kleiber ratios in Sanjabi sheep. Small Rumin Res. 93:88-93. doi: 10.1016/j.smallrumres.2010.05.005.
Morris CA, Johnson DL, Sumner RMW, Hight GK, Dobbie JL, Jones KR, Wrigglesworth AL, Hickey SM. 1996. Single trait selection for yearling fleece weight or live weight in Romney sheep correlated responses in live weight, fleece traits, and ewe reproduction. N Z J Agric Res. 39:95-106. doi: 10.1080/00288233.1996.9513166.
Morris CA, Hickey SM, Clarke JN. 2000. Genetic and environmental factors affecting lamb survival at birth and through to weaning. N Z J Agric Res. 43:515-524. doi: 10.1080/00288233.2000.9513448.
Mousa E, Mona A. Osman, EL-Saied UM. 2006. Genetic parameters for body weight of Egyptain Farafra lambs with random regression model. Egypt J Anim Prod. 43:57-69.
Mousa E, Monzaly H, Shaat I, Ashmawy. 2013. Factors affecting birth and weaning weights of native Farafra lambs in Upper Egypt. Egypt J Sheep Goat Sci. 8:1-10.
Näsholm A, Danell. 1996. Genetic relationships of lamb weight, maternal ability, and mature ewe weight in Swedish finewool sheep. J Anim Sci. 74:329-339.
Neser FWC, Erasmus GJ, VanWyk JB. 2001. Genetic parameter estimates for pre-weaning weight traits in Dorper sheep. Small Rumin Res. 40:197-202. doi: 10.1016/S0921-4488(01)00172-9.
Petrović V, Petrović MP, Ilić, Z Petrović MM, Milošević B, Ružić Muslić D, Maksimović N. 2013. Effect of genotype, sire, sex, gestation length on birth weight of lambs. Biotechnol Anim Husb. 29:685-693. doi: 10.2298/BAH1304685C.
Prakash V, Prince LLL, Gowane GR, Arora AL. 2012. The estimation of (co)variance components and genetic parameters for growth traits and Kleiber ratios in Malpura sheep of India. Small Rumin Res. 108:54-58. doi: 10.1016/j.smallrumres.2012.07.018.
Rashidi A, Mokhtari MS, Safi JM, Mohammad AMR. 2008. Genetic parameter estimates of pre-weaning growth traits in Kermani sheep. Small Rumin Res. 74:165-171. doi: 10.1016/j.smallrumres.2007.06.004.
Roshanfekr H, Mamouei M, Mohammadi K, Rahmatnejad E. 2011. Estimation of genetic and environmental parameters affected pre-weaning traits of Arabi lambs. J Anim Vet Adv. 10:1239-1243. doi: 10.3923/javaa.2011.1239.1243.
[SAS] Statistics Analysis System. 2002. Statistics Analysis System: User’s guide (Ver 9). North Carolina (US): SAS Institute Inc.
Savar-Sofla S, Nejati-Javaremi A, Abbasi MA, Vaez-Torshizi R, Chamani M. 2011. Investigation on direct and maternal effects on growth traits and the Kleiber Ratio in Moghani Sheep. World Appl Sci J. 14:1313-1319.
Simeonov MS, Harmon DL, Nedelkov KV. 2015. Non-genetic factors affecting birth weight in the lambs of Blackheads Pleven breed. J Anim Sci Adv. 5:1208-1217. doi: 10.5455/jasa.20150326081131.
Supakorn C, Pralomkarn W, Anothaisinthawee S. 2013. Estimation of genetic parameters and genetic trends for weight and body measurements at birth in sheep populations in Thailand. Songklanakarin J Sci Technol. 35:1-10.
Szwaczkowski T, Wójtowski J, Stanisławska E, Gut A. 2006. Estimates of maternal genetic and permanent environmental effects in sheep. Arch Tierz. 49:186-192.
Talebi MA, Miraei-Ashtiani SR, Nejati-Javaremi A, Moradi-Shahrbabak M. 2007. Phenotypic and genetic characteristics of growth and carcass traits of Lori-Bakhtiari sheep. Biotechnol Anim Husbandry. 23:357-363. doi: 10.2298/BAH0701357T.
Thiruvenkadan AK, Karunanithi K, Muralidharan J, Narendra BR. 2011. Genetic analysis of pre-weaning and post-weaning growth traits of Mecheri sheep under dry land farming conditions. Asian-Australas J Anim Sci. 24:1041-1047. doi: 10.5713/ajas.2011.10361.
Wolf JB, Brodie ED, Cheverud JM, Moore AJ, Wade MJ. 1998. Evolutionary consequences of indirect genetic effects. Trends Ecol Evol. 13:64-69. doi: 10.1016/S0169-5347(97)01233-0.
Yamaki K. 1994. Growth of lambs and genetic parameters in four breeds. Proc 5th World Congr Gen Appl Livest Prod. 18:135-138.
Yazdi MH, Engström G, Nasholm A, Johansson K, Jorjani H, Liljedahl LE. 1997. Genetic parameters for lamb weight at different ages and wool production in Baluchi sheep. J Anim Sci. 65:224-255.
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