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Estimates of (co)variance components due to direct and maternal effects for body weights in Jamunapari goats

Published online by Cambridge University Press:  01 March 2008

R. Roy ,
A. Mandal  and
D. R. Notter
R. Roy
Affiliation:
Genetics and Breeding Division, Central Institute for Research on Goats, Makhdoom, Mathura-281 122, Uttar Pradesh, India
A. Mandal*
Affiliation:
Genetics and Breeding Division, Central Institute for Research on Goats, Makhdoom, Mathura-281 122, Uttar Pradesh, India
D. R. Notter
Affiliation:
Department of Animal and Poultry Sciences, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061-0306, USA
*
E-mail: ajoy@cirg.res.in or ajoymandal@rediffmail.com
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Abstract

Estimates of (co)variance components were obtained for weights at birth, weaning and at 6, 9 and 12 months of age in Jamunapari goats maintained at the Central Institute for Research on Goats, Makhdoom, Mathura, India, over a period of 23 years (1982 to 2004). Records of 4301 kids descended from 204 sires and 1233 does were used in the study. Analyses were carried out by restricted maximum likelihood (REML), fitting an animal model and ignoring or including maternal genetic or permanent environmental effects. Six different animal models were fitted for all traits. The best model was chosen after testing the improvement of the log-likelihood values. Direct heritability estimates were inflated substantially for all traits when maternal effects were ignored. Heritability estimates for weights at birth, weaning and at 6, 9 and 12 months of age were 0.12, 0.18, 0.13, 0.17 and 0.21, respectively. Maternal heritability of body weight declined from 0.19 at birth to 0.08 at weaning and was near zero and not significant thereafter. Estimates of the fraction of variance due to maternal permanent environmental effects were 0.09, 0.13 and 0.10 for body weights at weaning, 6 months and 9 months of age, respectively. Results suggest that maternal additive effects were important only in the early stages of growth, whereas a permanent environmental maternal effect existed from weaning to 9 months of age. These results indicate that modest rates of genetic progress appear possible for all weights.

Keywords

body weightgenetic parametersJamunapari goatsmaternal effects
Type
Full Paper
Information
animal , Volume 2 , Issue 3 , March 2008 , pp. 354 - 359
Copyright
Copyright © The Animal Consortium 2008

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References

Abegaz, S, Negussie, E, Duguma, G, Rege, JEO 2002. Genetic parameter estimates for growth traits in Horro sheep. Journal of Animal Breeding and Genetics 119, 35–45.CrossRefGoogle Scholar
Al-Shorepy, SA 2001. Estimates of genetic parameters for direct and maternal effects on birth weight of local sheep in United Arab Emirates. Small Ruminant Research 39, 219–224.CrossRefGoogle ScholarPubMed
Al-Shorepy, SA, Notter, DR 1996. Genetic variation and covariation for ewe reproduction, lamb growth, and lamb scrotal circumference in a fall-lambing sheep flock. Journal of Animal Science 74, 1490–1498.CrossRefGoogle Scholar
Al-Shorepy, SA, Alhadrami, GA, Abdulwahab, K 2002. Genetic and phenotypic parameters for early growth traits in Emirati goat. Small Ruminant Research 45, 217–223.CrossRefGoogle Scholar
Ekiz, B, Özcan, M, Yilmaz, A, Ceyhan, A 2004. Estimates of genetic parameters for direct and maternal effects with six different models on birth and weaning weights of Turkish Merino lambs. Turkish Journal of Veterinary and Animal Science 28, 383–389.Google Scholar
El Fadili, M, Michaux, C, Detilleux, J, Leroy, PL 2000. Genetic parameters for growth traits of the Moroccan Timahdit breed of sheep. Small Ruminant Research 37, 203–208.CrossRefGoogle Scholar
Hanford, KJ, Van Vleck, LD, Snowder, GD 2002. Estimates of genetic parameters and genetic change for reproduction, weight and wool characteristics of Columbia sheep. Journal of Animal Science 80, 3086–3098.CrossRefGoogle ScholarPubMed
Hanford, KJ, Van Vleck, LD, Snowder, GD 2003. Estimates of genetic parameters and genetic change for reproduction, weight and wool characteristics of Targhee sheep. Journal of Animal Science 81, 630–640.CrossRefGoogle ScholarPubMed
Hanrahan, JP 1976. Maternal effects and selection response with an application to sheep data. Animal Production 22, 359–369.Google Scholar
Harvey WR 1990. User’s guide for LSMLMW MIXMDL, PC-2 version. Columbus, OH, USA.Google Scholar
Lewis, RM, Beatson, PR 1999. Choosing maternal-effect models to estimate (co)variances for live and fleece weight in New Zealand Coopworth sheep. Livestock Production Science 58, 137–150.CrossRefGoogle Scholar
Ligda, Ch, Gabriilidis, G, Papadopoulos, T, Georgoudis, A 2000. Investigation of direct and maternal genetic effects on birth and weaning weight of Chios lambs. Livestock Production Science 67, 75–80.CrossRefGoogle Scholar
Malik, CP, Kanaujia, AS, Pander, BL 1986. A note on the factors affecting pre-weaning growth in Beetal and Black Bengal kids and their crosses. Animal Production 43, 178–182.Google Scholar
Mandal, A, Neser, FWC, Rout, PK, Roy, R, Notter, DR 2006a. Estimation of direct and maternal (co)variance components for pre-weaning growth traits in Muzaffarnagari sheep. Livestock Science 99, 79–89.CrossRefGoogle Scholar
Mandal, A, Neser, FWC, Rout, PK, Roy, R, Notter, DR 2006b. Genetic parameters for direct and maternal effects on body weights of Muzaffarnagari sheep. Animal Science 82, 133–140.CrossRefGoogle Scholar
María, GA, Boldman, KG, Van Vleck, LD 1993. Estimates of variances due to direct and maternal effects for growth traits of Romanov sheep. Journal of Animal Science 71, 845–849.CrossRefGoogle ScholarPubMed
Matika, O, Van Wyk, JB, Erasmus, GJ, Baker, RL 2003. Genetic parameter estimates in Sabi sheep. Livestock Production Science 79, 17–28.CrossRefGoogle Scholar
Mavrogenis, AP, Constantinou, A, Louca, A 1984. Environmental and genetic causes of variation in production traits of Damacus goats. 1. Pre-weaning and post-weaning growth. Animal Production 38, 91–98.Google Scholar
Meyer, K 1992. Variance components due to direct and maternal effects for growth traits of Australian beef cattle. Livestock Production Science 31, 179–204.CrossRefGoogle Scholar
Meyer K 2000. DFREML programs to estimate variance components by restricted maximum likelihood using a derivative-free algorithm – user notes.Google Scholar
Mortimer SI and Atkins KD 1994. Direct additive and maternal genetic effects on wool production of Merino sheep. Proceedings of the Fifth World Congress Genetics Applied to Livestock Production, Guelph, Canada, vol. 18, pp. 103–106.Google Scholar
Näsholm A and Danell Ö 1994. Maternal genetic effects on lamb weights. Proceedings of the Fifth World Congress Genetics Applied to Livestock Production, Guelph, Canada, vol. 18, pp. 163–166.Google Scholar
Näsholm, A, Danell, Ö 1996. Genetic relationships of lamb weight, maternal ability, and mature ewe weight in Swedish finewool sheep. Journal of Animal Science 74, 329–339.CrossRefGoogle ScholarPubMed
Neser, FWC, Erasmus, GJ, Van Wyk, JB 2001. Genetic parameter estimates for pre-weaning weight traits in Dorper sheep. Small Ruminant Research 40, 197–202.CrossRefGoogle ScholarPubMed
Notter, DR 1998. Genetic parameters for growth traits in Suffolk and Polypay sheep. Livestock Production Science 55, 205–213.CrossRefGoogle Scholar
Ozcan, M, Ekiz, B, Yilmaz, A, Ceyhan, A 2005. Genetic parameter estimates for lamb growth traits and greasy fleece weight at first shearing in Turkish Merino sheep. Small Ruminant Research 56, 215–222.CrossRefGoogle Scholar
Robinson, DL 1996. Models which might explain negative correlations between direct and maternal genetic effects. Livestock Production Science 45, 111–122.CrossRefGoogle Scholar
Robison, OW 1981. The influence of maternal effects on the efficiency of selection: a review. Livestock Production Science 8, 121–137.Google Scholar
Rout, PK, Saxena, VK, Khan, BU, Roy, R, Mandal, A, Singh, SK, Singh, LB 2000. Characterisation of Jamunapari goats in their home tract. Animal Genetic Resources Information, vol. 27. Food and Agricultural Organization, Rome, Italy, pp. 43–52.Google Scholar
Roy, R, Pant, KP 2001. Jamunapari: the pride goat of India. Bulletin published by Central Institute for Research on Goats, Makhdoom, Farah, Mathura.Google Scholar
Roy, R, Singh, SK, Rout, PK, Saxena, VK, Khan, BU 2003. Genetic trend of growth of Jamunapari kids. Indian Journal of Animal Sciences 73, 534–537.Google Scholar
Safari, E, Fogarty, NM, Gilmour, AR 2005. A review of genetic parameter estimates for wool, growth, meat and reproduction traits in sheep. Livestock Production Science 92, 271–289.CrossRefGoogle Scholar
Schoeman, SJ, Els, JF, Van Niekerk, MM 1997. Variance components of early growth traits in the Boer goat. Small Ruminant Research 26, 15–20.Google Scholar
Snyman, MA, Olivier, JJ 1996. Genetic parameter for body weight, fleece weight and fibre diameter in South African Angora goats. Livestock Production Science 47, 1–6.Google Scholar
Snyman, MA, Erasmus, GJ, Van Wyk, JB, Olivier, JJ 1995. Direct and maternal (co)variance components and heritability estimates for body weight at different ages and fleece traits in Afrino sheep. Livestock Production Science 44, 229–235.CrossRefGoogle Scholar
Tosh, JJ, Kemp, RA 1994. Estimation of variance components for lamb weights in three sheep populations. Journal of Animal Science 72, 1184–1190.CrossRefGoogle ScholarPubMed
Van Wyk, JB, Erasmus, GJ, Konstantinov, KV 1993. Variance components and heritability estimates of early growth traits in the Elsenburg Dormer sheep stud. South African Journal of Animal Sciences 23, 72–76.Google Scholar
Willham, RL 1972. The role of maternal effects in animal breeding: III. Biometrical aspects of maternal effects in animals. Journal of Animal Science 35, 1288–1293.CrossRefGoogle Scholar
Willham, RL 1980. Problems in estimating maternal effects. Livestock Production Science 7, 405–418.CrossRefGoogle Scholar
Yazdi, MH, Engström, G, Näsholm, A, Johansson, K, Jorjani, H, Liljedahl, LE 1997. Genetic parameters for lamb weight at different ages and wool production in Baluchi sheep. Animal Science 65, 247–255.Google Scholar