Animal Production Science Animal Production Science Society
Food, fibre and pharmaceuticals from animals
RESEARCH ARTICLE

Inbreeding effects on some reproductive traits in Markhoz goats

P. Mahmoudi A , A. Rashidi A B and M. Razmkabir A
+ Author Affiliations
- Author Affiliations

A Department of Animal Science, Faculty of Agriculture, University of Kurdistan, PO Box 416, Sanandaj, Kurdistan, Iran.

B Corresponding author. Email: arashidi@uok.ac.ir

Animal Production Science - https://doi.org/10.1071/AN17043
Submitted: 23 January 2017  Accepted: 16 July 2017   Published online: 14 November 2017

Abstract

The objective of this study was to estimate the inbreeding coefficient and its effects on reproductive traits in Markhoz goats. The pedigree file included 5351 kids produced by 234 bucks and 1470 does. Average inbreeding coefficient for the whole population was 2.68%, and the minimum and maximum inbreeding coefficients were 0.05% and 31.25%, respectively. Average coefficient of inbreeding for inbred population was 5.17% and the number of inbred animals in the population was 2777. For investigating effects of inbreeding coefficient on reproductive traits, 3443 records were available for litter size at birth (LSB), litter size at weaning (LSW), total litter weight at birth (TLWB) and mean of litter weight at birth (MLWB). Furthermore, available records for total litter weight at weaning (TLWW) and mean of litter weight at weaning (MLWW) were 2918. Inbreeding depression was estimated as the linear regression of performance on the individual inbreeding coefficient of kids and dams using the most appropriate animal model based on Akaike’s information criterion. Furthermore, inbreeding depressions for LSB and LSW were estimated using threshold and Poisson models. Regression coefficients of LSB, LSW, TLWB, TLWW, MLWB and MLWW on inbreeding coefficient of kids were –0.035, –0.019, –0.077 kg, –0.782 kg, –0.009 kg and –0.332 kg, respectively. Furthermore, regression coefficients of LSB, LSW, TLWB, TLWW, MLWB and MLWW on inbreeding coefficient of dams were 0.064, –0.013, 0.241 kg, 0.638 kg, 0.028 kg and –1.783 kg, respectively. The obtained results from this study showed that inbreeding depression is controlled by an appropriate mating system policy.

Additional keywords: fitness, goat reproduction, inbreeding depression, litter size.


References

Akaike H (1974) A new look at the statistical model identification. IEEE Transactions on Automatic Control 19, 716–723.
A new look at the statistical model identification.CrossRef |

Bagnicka E, Wallin E, Lukaszewicz M, Adnoy T (2007) Heritability for reproduction traits in Polish and Norwegian populations of dairy goat. Small Ruminant Research 68, 256–262.
Heritability for reproduction traits in Polish and Norwegian populations of dairy goat.CrossRef |

Berg P, Nielsen J, Sørensen MK (2006) EVA: realized and predicted optimal genetic contributions. In ‘Proceedings of the 8th world congress on genetics applied to livestock production’. 2 pp. CD-ROM communication 27–09. (Instituto Prociência: Minas Gerais, Brazil)

Boujenane I, Chami A (1997) Effects of inbreeding on reproduction, weights and survival of Sardi and Beni Guil sheep. Journal of Animal Breeding and Genetics 114, 23–31.
Effects of inbreeding on reproduction, weights and survival of Sardi and Beni Guil sheep.CrossRef | 1:STN:280:DC%2BC3M3mt1Sjug%3D%3D&md5=52eb857236177b5d437929cd65150d97CAS |

Drobik D, Martyniuk E (2016) Inbreeding and its impact on the prolific Polish Olkuska sheep population. Small Ruminant Research 137, 28–33.
Inbreeding and its impact on the prolific Polish Olkuska sheep population.CrossRef |

Ercanbrack SK, Knight AD (1991) Effects of inbreeding on reproduction and wool production of Rambouillet, Targhee, and Columbia ewes. Journal of Animal Science 69, 4734–4744.
Effects of inbreeding on reproduction and wool production of Rambouillet, Targhee, and Columbia ewes.CrossRef | 1:STN:280:DyaK383is1Sjsg%3D%3D&md5=f0dcce0cb25c212ea6f86b667d0034e5CAS |

Falconer DS, Mackay TFC (1996) ‘Introduction to quantitative genetics.’ 3rd edn. (Longman Scientific & Technical: Harlow, Essex, UK)

Fazaeli H, Mirzaei F (2012) Fattening performance of Iranian goats under intensive feeding system. Egyptian Journal of Sheep and Goats Sciences 7, 39–46.
Fattening performance of Iranian goats under intensive feeding system.CrossRef |

Frankham R, Ballou JD, Briscoe DA (2004) ‘A primer of conservation genetics.’ (Cambridge University Press: Cambridge, UK)

Gilmour AR, Gogel BJ, Cullis BR, Thompson R (2006) ‘ASReml user guide release 2.0.’ (VSN International Ltd: Hemel Hempstead, UK)

González-Recio O, López de Maturana E, Gutiérrez JP (2007) Inbreeding depression on female fertility and calving ease in Spanish dairy cattle. Journal of Dairy Science 90, 5744–5752.
Inbreeding depression on female fertility and calving ease in Spanish dairy cattle.CrossRef |

Gowane GR, Prakash V, Chopra A, Prince LLL (2013) Population structure and effect of inbreeding on lamb growth in Bharat Merino sheep. Small Ruminant Research 114, 72–79.
Population structure and effect of inbreeding on lamb growth in Bharat Merino sheep.CrossRef |

Gutiérrez JP, Goyache F (2005) A note on ENDOG: a computer program for analyzing pedigree information. Journal of Animal Breeding and Genetics 122, 172–176.
A note on ENDOG: a computer program for analyzing pedigree information.CrossRef |

Gutiérrez JP, Cervantes I, Goyache F (2009) Improving the estimation of realized effective population sizes in farm animals. Journal of Animal Breeding and Genetics 126, 327–332.
Improving the estimation of realized effective population sizes in farm animals.CrossRef |

Kallweit E, Baulain U (2001) Reproduction performance and degree of inbreeding in a small Finnsheep population during a 34-year period. Archiv fur Tierzucht 44, 263–270.

Keller L, Waller D (2002) Inbreeding effects in wild populations. Trends in Ecology & Evolution 17, 230–241.
Inbreeding effects in wild populations.CrossRef |

Loeschcke V, Kristensen TN (2013) Inbreeding depression. In ‘Brenner’s encyclopedia of genetics’. 2nd edn. (Eds S Maloy, K Hughes) pp. 55–56. (Academic Press: San Diego)

Meuwissen THE, Luo Z (1992) Computing inbreeding coefficients in large populations. Genetics, Selection, Evolution. 24, 305–313.
Computing inbreeding coefficients in large populations.CrossRef |

Mokhtari MS, Moradi Shahrbabak M, Esmailizadeh AK, Moradi Shahrbabak H, Gutierrez JP (2014) Pedigree analysis of Iran-Black sheep and inbreeding effects on growth and reproduction traits. Small Ruminant Research 116, 14–20.
Pedigree analysis of Iran-Black sheep and inbreeding effects on growth and reproduction traits.CrossRef |

Panetto JCC, Gutierrez JP, Ferraz JBS, Cunha DG, Golden BL (2010) Assessment of inbreeding depression in a Guzerat dairy herd: Effects of individual increase in inbreeding coefficients on production and reproduction. Journal of Dairy Science 93, 4902–4912.
Assessment of inbreeding depression in a Guzerat dairy herd: Effects of individual increase in inbreeding coefficients on production and reproduction.CrossRef | 1:CAS:528:DC%2BC3cXhsFKmsb7I&md5=2e6fd0209c9a8c4a131c513147851086CAS |

Pooley EL, Kennedy MW, Nager RG (2014) Maternal inbreeding reduces parental care in the zebra finch, Taeniopygia guttata. Animal Behaviour 97, 153–163.
Maternal inbreeding reduces parental care in the zebra finch, Taeniopygia guttata.CrossRef |

Ralls K, Frankham R, Ballou JD (2013) Inbreeding and outbreeding. In ‘Encyclopedia of biodiversity’. 2nd edn. (Ed. SA Levin) pp. 245–252. (Academic Press: Amsterdam)

Rashidi A, Bishop SC, Matika O (2011) Genetic parameter estimates for pre-weaning performance and reproduction traits in Markhoz goats. Small Ruminant Research 100, 100–106.
Genetic parameter estimates for pre-weaning performance and reproduction traits in Markhoz goats.CrossRef |

Sajjad Khan M, Ali A, Hyder AU, Iqbal Chatta A (2007) Effect of inbreeding on growth and reproduction traits of Beetal goats (short communication). Archiv fur Tierzucht 50, 197–203.

Sargolzaei M, Iwaisaki H, Colleau JJ (2006) CFC: A tool for monitoring genetic diversity. In ‘Proceedings of the 8th world congress on genetics applied to livestock production’. CD-ROM communication 27–28. (Instituto Prociência: Minas Gerais, Brazil)

Selvaggi M, Dario C, Peretti V, Ciotola F, Carnicella D, Dario M (2010) Inbreeding depression in Leccese sheep. Small Ruminant Research 89, 42–46.
Inbreeding depression in Leccese sheep.CrossRef |

van Wyk JB, Fair MD, Cloete SWP (2003) Revised models and genetic parameter estimates for production and reproduction traits in the Elsenburg Dormer sheep stud. South African Journal of Animal Science 33, 213–222.

van Wyk JB, Fair MD, Cloete SWP (2009) Case study: the effect of inbreeding on the production and reproduction traits in the Elsenburg Dormer sheep stud. Livestock Science 120, 218–224.
Case study: the effect of inbreeding on the production and reproduction traits in the Elsenburg Dormer sheep stud.CrossRef |



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