Inbreeding depression on growth traits of Iranian Lori sheep

Authors

  • Zahra Yeganehpur Khuzestan Ramin Agricultural and Natural Resources University
  • Hedayatollah Roshanfekr Khuzestan Ramin Agricultural and Natural Resources University,
  • Jamal Fayazi Khuzestan Ramin Agricultural and Natural Resources University,
  • Mir Hossein Beyranvand Lorestan Agricultural and Natural Resources Research Centre

DOI:

https://doi.org/10.17533/udea.rccp.325036

Keywords:

inbreeding categories, inbreeding effects, mating system, pedigree statistics

Abstract

Lori sheep is an Iranian heavy breed known for its superiority in terms of disease resistance, adaptability to the mountainous west of the country and meat production potential. Objective: to estimate and compare the inbreeding coefficient in Lori sheep, and its impact on growth traits. Methods: data and pedigree information were collected in Lorestan Agricultural and Natural Resources Research Center, west of Iran, during 2001-2010. Traits included were birth weight (BW), weaning weight (WW), 6-month weight (6MW) and 9-month weight (9MW). The inbreeding coefficient estimation was carried out through the CFC software, and quantification of individual inbreeding regression on the characteristics was conducted using The Wombat software. All animals were divided into four categories according to the inbreeding coefficients obtained from their pedigree: the first category included non-inbred animals (F = 0%); and the second, third, and fourth categories included inbred animals as 0 < F ≤ 0.10, 0.10 < F ≤ 0.20, and F > 0.20, respectively. Results: inbreeding coefficients were 0.69% and 2.24% in the entire population and inbred population, respectively. Inbreeding regression for BW, WW, 6 MW and 9 MW were estimated as +4.5, -10.3, -76.3, and -77.4 g, respectively. The inbreeding trend was positive and significant for the whole population (0.215; p < 0.001), but not significant for the inbred population. Conclusion: these results confirm a low level of inbreeding and suggest that direct controlled mating could be an appropriate method to avoid inbreeding depression.

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Author Biography

Zahra Yeganehpur, Khuzestan Ramin Agricultural and Natural Resources University

Department of Animal Science, Faculty of Animal Science and Food Industries, Ahwaz, Iran

References

Akhtar P, Ahmad Z, Mohiuddin G, Abdullah M. Effect of inbreeding on different performance traits of Hissardale sheep in Pak Pak. Vet J 2000; 20:169-172. Barczak E, Wolc A, Wójtowski J, Slósarz P, Szwaczkowski T. Inbreeding and inbreeding depression on body weight in sheep. Anim Feed Sci 2009; 18:42-50. Dorostkar M, Faraji Arough H, Shodja J, Rafat SA, Rokouei M, Esfandyari H.Inbreeding and inbreeding depression in Iranian Moghani sheep breed. J Agri Sci Technol 2012; 14:549-556. Ebel ER, Phillips PC. Intrinsic differences between males and females determine sex-specific consequences of inbreeding. BMC Evol Biol 2016; 16:36

Eteqadi B, Ghavi Hossein-Zadeh N, Shadparvar A A. Population structure and inbreeding effects on body weight traits of Guilan sheep in Iran. Small Ruminant Res 2014; 119:45-51. Ghavi Hossein-Zadeh N. Inbreeding effects on body weight traits of Iranian Moghani sheep. Arch Tierzucht 2012; 55:171-178. Huby M, Griffon L, Moureaux S, De Rochambeau H, Danchin Burge C, Verrier E. Genetic variability of six French meat sheep breeds in relation to their genetic management. Genet Sel Evol 2003; 35:637-655. Jalali Zonour MJ. Modern Principles of Sheep Husbandry. 3rd ed. Tehran, Iran (In Persian): Partove Vaghe’e Publishers; 2010.Khan MS, Ahmad MD, Ahmad Z, Jadoon JK. Effect of inbreeding on performance traits of Rambouillet sheep. J Anim Plant Sci 1995; 5:299-304. Lush J L. Animal Breeding Plans. Iowa, USA: Iowa State College Press; 1945. Meyer K. WOMBAT- A tool for mixed model analyses in quantitative genetics by restricted maximum likelihood (REML). J Zhej Uni Sci B 2007; 8:815-821. Mirza RH, Abdullah M, Ali I, Hussain R. Effect of inbreeding on body weight in Lohi sheep. J Anim Plant Sci 1999; 9: 25-27.Mohammadi K, Abdollahi-Arpanahi R, Amraei F, Mirza Mohammadi E, Rashidi A. Genetic parameter estimates for growth and reproductive traits in Lori sheep. Small Ruminant Res 2015; 131:35-42. Mokhtari MS, Moradi Shahrbabak M, Esmailizadeh AK, Moradi Shahrbabak H, Gutierrez JP. Pedigree analysis of Iran-Black sheep and inbreeding effects on growth and reproduction traits. Small Ruminant Res 2014; 116:14-20. Negussie E, Abegaz S and Rege JOE. Genetic trend and effects of inbreeding on growth performance of tropical fat-tailed sheep. International Proceeding of the 7th World Congress on Genetics Applied to Livestock Production, 2002 Aug 19-23; Montpellier, France, 2002. Norberg E, Sørensen AC. Inbreeding trend and inbreeding depression in the Danish populations of Texel, Shropshire and Oxford Down. J Anim Sci 2007;85:299-304. Pedrosa VB, Santana Jr ML, Oliveira PS, Eler JP, Ferraz JBS. Population structure and inbreeding effects on growth traits of Santa Inês sheep in Brazil. Small Ruminant Res 2010; 93: 135-139. Rashedi Dehsahraei A, Fayazi J, Vatankhah M. Investigating inbreeding trend and its impact on growth traits of Lori-Bakhtiari Sheep. J Ruminant Res 2013; 1:65-78. Sargolzaei M, Iwaisaki H, Colleau JJ. CFC: a tool for monitoring genetic diversity. International Proceeding of the 8th World Congress on Genetics Applied to Livestock Production CD-ROM Communication, 2006 Aug 13-18; Belo Horizonte, Brazil, 2006.SAS Institute Inc. SAS User’s Guide: Version 9.2. SAS Institute Inc., Cary, NC, USA; 2009

Sheikhloo MR, Tahmoorespur M, Eslaminejad AA. Evaluation of the inbreeding for Baluchi sheep at Abbasabad breeding station, Mashhad. Iranian J Anim Sci Res 2012; 3:453-458. Tahmoorespour M, Sheikhloo M. Pedigree analysis of the closed nucleus of Iranian Baluchi sheep. Small Ruminant Res 2011; 99:1-6

Van Wyk JB, Erasmus GJ, Konstantinov KV. Inbreeding in the Elsenburg Dormer sheep stud. S Afr J Anim Sci 1993; 23:77-80. Van Wyk JB, Fair MD, Cloete SWP. Case study: the effect of inbreeding on the production and reproduction traits in the Elsenburg Dormer sheep stud. Livest Sci 2009; 120:218-224

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Published

2016-10-14

How to Cite

Yeganehpur, Z., Roshanfekr, H., Fayazi, J., & Beyranvand, M. H. (2016). Inbreeding depression on growth traits of Iranian Lori sheep. Revista Colombiana De Ciencias Pecuarias, 29(4), 264–273. https://doi.org/10.17533/udea.rccp.325036

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Original research articles