Abstract
This work aims to improve the selection program of the Timahdit breed through the use of the parameters of the Von Bertalanffy model as selection criteria and the treatment of uncertain paternity found in pastoral systems. A database containing 12,029 animals and a pedigree file integrating the probabilities of the parents with a total of 48,292 animals were used in the analysis. An individual estimation of the parameters of the model studied by the nonlinear regression procedure Proc NLIN of SAS was carried out, followed by the determination of the fixed effects which influence these parameters by means of a general linear model using the GLM procedure of the SAS software. The treatment of uncertain paternity is solved by an R code translating Average Numerator Relationship Matrix Model (ANRM). Then, the variance and (co)variance components were estimated by a Bayesian approach using the BRMS package. The high heritability values obtained, between 0.52 and 0.55 for the parameters studied, suggest good prospects for genetic responses to selection and the maintenance of sustained genetic progress, especially when environmental conditions are unfavorable. The positive correlations between all the parameters studied show that animals with rapid development tend to have lower weight performance. Finally, with optimal selection based on the genetic values associated with these parameters, we can make the desired changes to the growth curve by choosing breeders that achieve high weight performances as quickly as possible, and that would allow improving the feed efficiency for these animals, as well as increasing the profitability of sheep farms.
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References
Abegaz, S., Van Wyk, J.B., Olivier, J.J., 2010. Estimation of genetic and phenotypic parameters of growth curve and their relationship with early growth and productivity in Horro sheep. Arch. Anim. Breed. 53, 85–94. https://doi.org/10.5194/aab-53-85-2010
Ahmadpanah, J., Ghaderi–Zefrehei, M., Zakizadeh, S., Rafeie, F., 2023. Genetic analysis of growth parameters and optimum age and weight slaughter prediction in Kurdi sheep. Small Ruminant Research, 229, 107132. https://doi.org/10.1016/j.smallrumres.2023.107132
Ali, A., Javed, K., Zahoor, I., Anjum, K.M., 2020. Determination of the best non-linear function to describe the growth of Kajli sheep. SA J. An. Sci. 50, 452–459. https://doi.org/10.4314/sajas.v50i3.12
ANOC. Race Timahdite. Association Nationale Ovine et Caprine . 2016. http://www.anoc.ma/les-races/races-ovines/timahdite/. Accessed 6.29.22
Balafrej, M., 2019. Determination of a New Characterization Point for Nonlinear Mathematical Models Applied to Sheep. IJSSAM 4, 38. https://doi.org/10.11648/j.ijssam.20190403.13
Balafrej, M., Fagroud, M., Sraïri, M.T., 2023. Nonlinear modeling of growth and study of a new characterization point applied to Timahdit breed sheep under uncertain paternity. Trop Anim Health Prod 55, 192. https://doi.org/10.1007/s11250-023-03605-4
Bathaei, S.S., Leroy, P.L., 1998. Genetic and phenotypic aspects of the growth curve characteristics in Mehraban Iranian fat-tailed sheep. Small Ruminant Research 29, 261–269. https://doi.org/10.1016/S0921-4488(97)00142-9
Beck, H.E., Zimmermann, N.E., McVicar, T.R., Vergopolan, N., Berg, A., Wood, E.F., 2018. Present and future Köppen-Geiger climate classification maps at 1-km resolution. Sci Data 5, 180214. https://doi.org/10.1038/sdata.2018.214
Bilgin, O.C., Esenbuga, N., Macit, M., Karaoglu, M., 2004. Growth Curve Characteristics in Morkaraman and Awassi Sheep: II. Genetic and Environmental Aspects. Journal of Applied Animal Research 26, 7–12. https://doi.org/10.1080/09712119.2004.9706496
Bürkner, P.-C., 2017. brms: An R Package for Bayesian Multilevel Models Using Stan. J. Stat. Soft. 80. https://doi.org/10.18637/jss.v080.i01
Falconer, D.S. and Mackay, T.F.C., 1996. Introduction to Quantitative Genetics. 4th, Addison Wesley Longman, Harlow.
FAOSTAT. Crops and livestock products. Food and Agriculture Organization of the United Nations. 2022. https://www.fao.org/faostat/en/#data/QI. Accessed 6.29.22
Fitzhugh, H.A., 1976. Analysis of Growth Curves and Strategies for Altering Their Shape. Journal of Animal Science 42, 1036–1051. https://doi.org/10.2527/jas1976.4241036x
Gbangboche, A.B., Glele-Kakai, R., Salifou, S., Albuquerque, L.G., Leroy, P.L., 2008. Comparison of non-linear growth models to describe the growth curve in West African Dwarf sheep. Animal 2, 1003–1012. https://doi.org/10.1017/S1751731108002206
Ghavi Hossein-Zadeh, N., 2017. Modelling growth curve in Moghani sheep: comparison of non-linear mixed growth models and estimation of genetic relationship between growth curve parameters. J. Agric. Sci. 155, 1150–1159. https://doi.org/10.1017/S0021859617000326
Ghavi Hossein-Zadeh, N. 2015a. Bayesian Estimates of Genetic Relationships between Growth Curve Parameters in Shall Sheep via Gibbs Sampling. Iranian Journal of Applied Animal Science. 5. 897-904.
Ghavi Hossein-Zadeh, N., 2015b. Estimation of genetic relationships between growth curve parameters in Guilan sheep. J Anim Sci Technol 57, 19. https://doi.org/10.1186/s40781-015-0052-6
Harder, B., Bennewitz, J., Reinsch, N., Mayer, M., Kalm, E., 2005. Effect of missing sire information on genetic evaluation. Arch. Anim. Breed. 48, 219–232. https://doi.org/10.5194/aab-48-219-2005
Henderson, C.R., 1988. Use of an Average Numerator Relationship Matrix for Multiple-Sire Joining. Journal of Animal Science 66, 1614. https://doi.org/10.2527/jas1988.6671614x
Hojjati, F., Ghavi Hossein-Zadeh, N., 2018. Comparison of non-linear growth models to describe the growth curve of Mehraban sheep. Journal of Applied Animal Research 46, 499–504. https://doi.org/10.1080/09712119.2017.1348949
Juengel, J.L., Hickey, S.M., Clarke, S.M., Cullen, N.G., McEwan, J.C., Dodds, K.G., 2019. Heritability of ram mating success in multi-sire breeding situations. Animal 13, 917–923. https://doi.org/10.1017/S1751731118002446
Lupi, T.M., León, J.M., Nogales, S., Barba, C., Delgado, J.V., 2016. Genetic parameters of traits associated with the growth curve in Segureña sheep. Animal 10, 729–735. https://doi.org/10.1017/S1751731115002773
Lupi, T.M., Nogales, S., León, J.M., Barba, C., Delgado, J.V., 2015. Characterization of commercial and biological growth curves in the Segureña sheep breed. Animal 9, 1341–1348. https://doi.org/10.1017/S1751731115000567
MAPMDREF, 2020. Agricultural statistics. Ministry of Agriculture, Fisheries, Rural Development, Water and Forests, Morocco.
Marta, O., Dana, P., 2008. Genetic and Environmental Trends for Milk Production Traits in Sheep Estimated with Test-day Model. Asian Australas. J. Anim. Sci 21, 1088–1096. https://doi.org/10.5713/ajas.2008.70700
Mohammadi, Y., Mokhtari, M.S., Saghi, D.A., Shahdadi, A.R., 2019. Modeling the growth curve in Kordi sheep: The comparison of non-linear models and estimation of genetic parameters for the growth curve traits. Small Ruminant Research 177, 117–123. https://doi.org/10.1016/j.smallrumres.2019.06.012
Mokhtari, M.S., Borzi, N.K., Fozi, M.A., Behzadi, M.R.B., 2019. Evaluation of non-linear models for genetic parameters estimation of growth curve traits in Kermani sheep. Trop Anim Health Prod 51, 2203–2212. https://doi.org/10.1007/s11250-019-01927-w
Pinelli, F., Oltenacu, P.A., Iannolino, G., Grosu, H.B., D’Amico, A., Scimonelli, M., Genna, G., Calagna, G., & Ferrantelli, V., 2001. DESIGN AND IMPLEMENTATION OF A GENETIC IMPROVEMENT PROGRAM FOR COMISANA DAIRY SHEEP IN SICILY.
Saghi, D.A., Aslaminejad, A., Tahmoorespur, M., Farhangfar, H., Nassiri, M., Dashab, G.R., 2012. Estimation of genetic parameters for growth traits in Baluchi sheep using Gompertz growth curve function. Indian J Anim Sci 82(8):889–892
Sanders, K., Bennewitz, J., Kalm, E., 2006. Wrong and Missing Sire Information Affects Genetic Gain in the Angeln Dairy Cattle Population. Journal of Dairy Science 89, 315–321. https://doi.org/10.3168/jds.S0022-0302(06)72096-3
Sharif, N., Ali, A., Mohsin, I., Ahmad, N., 2021. Evaluation of nonlinear models to define growth curve in Lohi sheep. Small Ruminant Research 205, 106564. https://doi.org/10.1016/j.smallrumres.2021.106564
Sraïri, M. T., 2011. Le développement de l’élevage au Maroc : succès relatifs et dépendance alimentaire. Courrier de l’environnement de l’INRA 60, 91-101.
Van der Merwe, D.A., Brand, T.S., Hoffman, L.C., 2019. Application of growth models to different sheep breed types in South Africa. Small Ruminant Research 178, 70–78. https://doi.org/10.1016/j.smallrumres.2019.08.002
Van Der Waaij, E.H., 2004. A resource allocation model describing consequences of artificial selection under metabolic stress. J. Anim. Sci. 82, 973–981. https://doi.org/10.2527/2004.824973x
Van Vleck, L.D., 1970. Misidentification in Estimating the Paternal Sib Correlation. Journal of Dairy Science 53, 1469–1474. https://doi.org/10.3168/jds.S0022-0302(70)86416-5
Von Bertalanffy, L., 1957. Quantitative Laws in Metabolism and Growth. The Quarterly Review of Biology 32, 217–231. https://doi.org/10.1086/401873
Acknowledgements
The authors are very grateful to all ANOC central and regional officials for allowing access to the database and archives.
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This research was supported through computational resources of HPC-MARWAN (http://www.marwan.ma/hpc) provided by the National Center for Scientific and Technical Research (CNRST), Rabat, Morocco.
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MB, MTS, and MF contributed to the study’s conception and design. Data collection and analysis were performed by MB. The first draft of the manuscript was written by MB, and all authors commented on previous versions of the manuscript. All authors read and approved the final manuscript.
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Balafrej, M., Fagroud, M. & Sraïri, M.T. Genetic parameters of sheep growth curve traits reared within rangelands under uncertain paternity. Trop Anim Health Prod 56, 34 (2024). https://doi.org/10.1007/s11250-023-03882-z
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DOI: https://doi.org/10.1007/s11250-023-03882-z