Study of performance and estimation of genetic parameters of reproductive traits in Makooei sheep using linear and threshold models

Authors

1 Arak university

2 Arak University

3 Tabriz University

4 Animal Breeding centet

Abstract

Background and objectives: Reproductive traits in sheep are the most important traits affecting profitability. These traits have categorical nature, but in practice the continuous distribution of traits is analyzed. In addition, to have true and accurate pedigree records, applying the appropriate model for analyzing the characteristics of high precision in the estimation of genetic parameters will be evaluated.Accurate prediction of animals breeding values is one of the best tools available to maximize the response to a selection program. Development of effective genetic evaluation and improvement programs requires knowledge of the genetic parameters for these economically important production traits. many studies, LS is analyzed by linear models, and the variance components are obtained by REML methods. Compared to linear models, non-linear models have disadvantages in goodness of fit or predictivty and they are time consuming in computation, which might be prohibitive for routine calculations Materials and methods: The main objective of this study was to obtain effects of genetic estimates of reproductive traits in Makooei sheep using repeatability linear and threshold models that are necessary to develop an efficient selection strategy for improvement of reproduction. For this purpose, were estimated using linear and threshold univariate animal model on the data of 4319 records of 1629 ewes, collected during 1996 to 2014 in rearing and improvement of Makooei sheep for conception rate, number of lambs born, number of lambs alive at weaning, number of lambs born per ewe exposed and number of lambs born per ewe exposed traits. The model was included fixed effects (year and age of ewe) and random effects additive genetic of ewe, permanent environmental of ewe and residual. Results: The overall mean of traits were as 0.93 for conception rate, 1.16 for number of lambs born, 0.98, for number of lambs alive at weaning, 1.07 for number of lambs born per ewe exposed and 0.91 for number of lambs born per ewe exposed. The heritability coefficient of traits were estimated as 0.05, 0.11, 0.06, 0.08, and 0.04 respectively, resulted from linear analysis and 0.12, 0.20, ‌0.15, 0.18 and 0.10 respectively, resulted from threshold analysis. The estimation of repeatability coefficient of traits were as 0.09, 0.16, 0.18, 0.15 and 0.12 respectively, for linear analysis and 0.48, 0.51, 0.34, 0.50 and 0.41 respectively for threshold analysis. Conclusion: The results of this study showed that, using threshold models for analyzing reproductive traits in genetic evaluations, comparison with linear models, caused relatively increasing genetic parameters and accuracy of evaluations.

Keywords

Main Subjects


1. Hefnawy, A.E.G. and Tórtora-Pérez, J.L. 2010. The importance of selenium
and the effects of its deficiency in animal health. Small. Rumin. Res. 89: 185-192.
2. Alimohamady, R., Aliarabi, H., Bahari, A.A. and Dezfoulian, A.H. 2013. Influence of different amounts and sources of selenium supplementation on performance, some blood parameters, and nutrient digestibility in lambs. Biol. Trace. Elem. Res. 154: 45–54.
3. Andres, S., Mane, M.C., Sanchez, J., Barrera, R. and Jimenez, A. 1996. Changes in GSHPx and muscle enzyme activities in lambs with nutritional myodegeneration following a single treatment with sodium selenite. Small. Rumin. Res. 23: 183-186.
4. AOAC. 2012. Official Method of Analysis. AOAC International, Gaithersburg, MD.
5. Arthur, J.R. 1988. Effects of selenium and vitamin E status on plasma creatine kinase activity in calves. J. Nut. 118:
745-755.
6. Beckett, G.J. and Arthur, J.R. 2005. Selenium and endocrine systems. J. Endocrinol. 184: 455-465.
7. Davis, P.A., McDowell, L.R., Wilkinson, N.S., Buergelt, C.D., Van Alstyne, R., Weldon, R.N., Marshall, T.T. and Matsuda-Fugisaki, E.Y. 2008. Comparative effects of various dietary levels of Se as sodium selenite or Se yeast on blood, wool, and tissue Se concentrations of whether sheep. Small. Rumin. Res. 74: 149-158.
8. Elsisy. GA., Abdel Razek, A.M.A., Younis, A.A., Ghalab A.M. and Abdou, M.S.S. 2008. Effect of dietary zinc or selenium supplementation on some reproductive hormone levels in male Baladi goats. Glob. Vet. 2(2): 46-50.
9. Faixova, Z., Faix, S., Leng, L., Vaczi, P., Makova, Z. and Szaboova, R. 2007. Hematological, blood and rumen chemistry changes in lambs following supplementation with Se-yeast. Acta. Vet. Brno. 76:3-8.
10. Foster, L.H. and Sumar, S. 1997. Selenium in health and disease: a review. Cri. Rev. Food Sci. Nutr. 37 (3): 211-228.
11. Horky, P. 2015. Effect of selenium on its content in milk and performance of dairy cows in ecological farming. Slovak. J. Food. Sci. l 9: 324-329.
12. Jalilian, M.T., Moeini, M.M. and Karkodi, K. 2012. Effect of selenium and vitamin E supplementation during late pregnancy on colostrum and plasma Se, Cu, Zn and Fe concentrations of fat tail Sanjabi ewes and their lambs. Acta Agric .Slov. 100: 123–129.
13. Juniper, D.T., Phipps, R.H., Jones, A.K. and Bertin, G. 2006 Selenium supplementation of lactating dairy cows effect on selenium concentration in blood, milk, urine and feces. J. Dairy. Sci. 89: 3544-3551.
14. Kachuee, R., Moeini, M.M., and Souri, M. 2013. The effect of dietary organic and inorganic selenium supplementation on serum Se, Cu, Fe and Zn status
during the late pregnancy in Merghoz goats and their kids Merghoz goats and their kids. Small. Rumin. Res. 110: 20- 27.
15. Kojouri, G.A., Jahanabadi, S., Shakibaie, M., Ahadi, A.M. and Shahverdi. A.R. 2011. Effect of selenium supplementation with sodium selenite and selenium nanoparticles on iron homeostasis and transferring gene expression in sheep. Res. Vet. Sci. 93: 275-278.
16. Kojouri, G.A. and Shirazi, A. 2007. Serum concentration of Cu, Zn, Fe, Mo, and Co folloing systemic administration of Vitamin E and selenium to the pregnant ewes. Small. Rumin. Res. 70: 136-139.
17. Kumar M., Garg, A.K, Dass, R.S., Chaturvedi, V.K., Mudgal, V. and Varshney, V.P. 2009 Selenium supplementation influences growth performance, antioxidant status and immune response in lambs. Anim. Feed. Sci. Tech. 153: 77-87.
18. Kumar, N., Garg, A.K. and Mudgal, V. 2008. Effect of different levels of selenium supplementation on growth rate, nutrient utilization, blood metabolic profile, and immune response in lambs. Biol. Trace Elem. Res. 126: 44-56.
19. Meschy, F. 2000. Recent progress in the assessment of mineral requirements of goats. Livest. Prod. Sci. 64: 9-14.
20. Moeini, M.M., Kiani, A., Karami, H. and Mikaeili, E. 2011. The effect of selenium administration on the selenium, copper, iron and zinc status of pregnant heifers and their newborn calves. Agri. Sci. Tech. 13: 53-59.
21. Mohri, M., Ehsani, A., Norouzian, M.A., Heidarpour, M. and Seifi, H.A. 2011. Parenteral selenium and vitamin E supplementation to lambs: hematology, serum biochemistry, performance, and relationship with other trace elements. Biol. Trace. Elem. Res. 139: 308-316.
22. Mudgal, V., Garg, A.K., Dass, R.S. and Varshney V.P. 2008. Effect of selenium and copper supplementation on blood metabolic profile in male buffalo (Bubalus bubalis) calves. Biol. Trace Elem. Res. 121: 31-38.
23. NRC. 2007. Nutrient requirements of small ruminants. National Academy press, Washington, DC.
24. Oblitas, F., Contreras, P.A., Bohmwald, H. and Wittwer, F. 2001. Effect of selenium supplementation on blood glutathione peroxidase (GSH-Px) activity and weight gain in heifers. Arch. Med. Vet. 32: 55-62.
25. Paglia, D.E. and Valentine, W.N. 1967. Studies on the quantitative and qualitative characterization of erythrocyte glutathione peroxidase. Lab. Clin. Med. 70: 158-169.
26. Pavlata, L., Prasek, J., Filipek, J. and Pechova, A. 2004. Influence of parenteral administration of selenium and vitamin E during pregnancy on selected metabolic parameters and colostrum quality in dairy cows at parturition. Vet. Med. Czech. 5: 149-155.
27. Pechova, A., evcikova, L., Pavlata, L. and Dvorak, R. 2012. The effect of various forms of selenium supplied to pregnant goats on selected blood parameters and on the concentration of Se in urine and blood of kids at the time of weaning. Vet. Med. 57(8): 394–403
28. Rimbach, G., Walter, A., Most, E. and Pallauf, J. 1998. Effect of microbial phytase on zinc bioavailability and cadmium and lead accumulation in growing rats. Food Chem. Toxicol. 36: 7-12.
29. Salama-Ahmad. A., Caja, G., Albanell, E., Such, X., Casals, R. and Plaixats, J. 2003. Effect of dietary supplements of zinc-methionine on milk production, udder health and zinc metabolism in dairy goats. J. Dairy res. 70: 9-17.
30. SAS Institute. 2004. User’s Guide. Version 9.1: Statistics. SAS Institute, Cary, NC.
31. Schomburg L. and Köhrle J. 2008. On the importance of selenium and iodine metabolism for thyroid hormone biosynthesis and human health. Mol. Nutr. Food. Res. 52: 1235–1246
32. Shi, L., Xun, W., Yue, W., Zhang, C., Ren, Y., Shi, L., Wang, Q., Yang, R.
and Lei, F. 2011. Effect of sodium selenite, Se-yeast and nano-elemental selenium on growth performance, Se concentration and antioxidant status in
growing male goats. Small. Rumin. Res. 96: 49-52.
33. Suttle, N.F. 2010. Mineral Nutrition of Livestock (4thed). CAB International, Oxford, UK.
34. Todini L., Malfatti A., Valbonesi A., Trabalza-Marinucci M. and Debenedetti A. 2007. Plasma total T3 and T4 concentrations in goats at different physiological stages, as affected by the energy intake. Small. Rumin. Res. 68: 285–290.
35. Underwood, E.J. and Suttle, N.F. 1999. The mineral nutrition of livestock. J. CAB international, Wallingford, U.K.
36. Vansoest, P.J., Robertson, J.B. and Lewis. B.A. 1991. Methods of dietary fiber, neutral detergent fiber and non-starch polysaccharides in relation to animal nutrition. J. Dairy. Sci. 74:3583-3587.
37. Wichtel, J.J., Craigie, A.L., Freeman, D.A., Varela-Alvarez, H. and Wiamson, N.B. 1996. Effect of selenium and iodine supplementation on growth rate and on thyroid and somatotrophic function in dairy calves at pasture. J. Dairy. Sci. 79: 1865-1872.
38. Aghwan, Z.A., Sazili, A.Q., Alimon, A.R., Goh, Y.M. and Hilm. M. 2013. Blood haematology, serum thyroid hormones and glutathione peroxidase status in Kacang Goats fed inorganic Iodine and Selenium supplemented diets. J. Anim. Sci. 26(11): 1577-1582.
39. Zhang, L., Zhou, Z.Q. Li, G. and Fu, M.Z. 2013. The effect of Deposition Se on the mRNA Expression levels of GPxs in goats from a Se-enriched County of China. Biol. Trace Elem. Res. 156:111-123.
40. Zubair, M., Ali, M., Ahmad, M., Sajid, M., Ahmad, I. and Gul, S.T. 2015. Effect of selenium and vitamin E on cryopreservation of semen and reproductive performance of animals (a review). J. Entomol. Zool. 3(1): 82-86.