Genetic Predisposition to Abortions Is Increasing in Iranian Holstein Cows

Subject Areas : Camel

S. Nadri ¹ (Department of Animal Science, Faculty of Agriculture, Bu-Ali Sina University, Hamedan, Iran|Department of Animal Science, College of Agriculture, Isfahan University of Technology, Isfahan, Iran)
P. Zamani ² (Department of Animal Science, Faculty of Agriculture, Bu-Ali Sina University, Hamedan, Iran)
A. Sadeghi-Sefidmazgi ³ (Department of Animal Science, Faculty of Agriculture, Isfahan University of Technology, Isfahan, Iran)
R. Abdoli ⁴ (Department of Animal Science, Faculty of Agriculture, Bu-Ali Sina University, Hamedan, Iran)
A. Ghazi Khani Shad ⁵ (Department of Animal Science, Islamic Azad University, Saveh Branch, Saveh, Iran)

Received: 2020-04-19 Accepted : 2020-08-15 Published : 2021-03-01

Keywords: heritability, Reproduction, dairy cattle, parity, Season,

Abstract :

Abortion is an important trait with noticeable impacts on economic profit of dairy herds. This study was conducted to estimate variance components and genetic, environmental and phenotypic trends for abortions in Iranian Holstein Friesian cows. The data used were 247230 calving and abortion records of 84421 Holstein cows, collected during years 1991-2016, from 51 herds in Iran. Variance components and genetic parameters were estimated using a logit link function, fitting an animal mixed model by ASReml software. In this model, parity and milk yield were fixed, while direct additive genetic, herd-year-season and permanent environment effects were considered as random factors. Genetic, phenotypic and environmental trends were estimated as weighted regression coefficients of breeding values, phenotypic values and environmental deviations averages on birth year, respectively and the number of observations was considered as the weighting factor. Generally, abortion risk in the first parity was lower than the later parities and in autumn was lower than the other seasons. Abortion risk also increased by increase in milk yield level. Heritability and repeatability estimates for abortion were both 0.165 ± 0.010. A significant positive genetic trend (0.038 rate/year) and a significant negative environmental trend (-0.033 rate/year) were estimated for abortion, which indicated significant increase of genetic predisposition to abortions and improvement of environmental conditions to prevent abortion incidence. A significant positive phenotypic trend (0.002 rate/year) was also estimated, which showed overall increase of abortion rate during the studied years. Overall, it could be concluded that genetic predisposition to abortion is increasing in Iranian Holstein cows, but inclusion of abortion risk in bull proofs and selection indices may help to reduce abortion incidence and increase economic profit of dairy cattle industry.

References:

Abdoli R., Zamani P., Mirhoseini S.Z., Ghavi Hossein-Zadeh N. and Almasi M. (2019). Genetic parameters and trends for litter size in Markhoz goats. Rev. Colomb. Cienc. Pec. 32, 58-63.

Alves D., McEwen B., Hazlett M., Maxie G. and Anderson N. (1996). Trends in bovine abortions submitted to the Ontario Ministry of Agri-culture, Food and Rural Affairs, 1993-1995. J. Can. Vet. 37, 287-288.

Amin A.A., Gere T. and Kishk W.H. (2000). Additive genetic variance and covariance in some reproductive disorders in Hungarian Holstein Friesian using multi-trait animal model. Arch. Anim. Breed. 6, 573-581.

Berry D.P., Wall E. and Pryce J.E. (2014). Genetics and genomics of reproductive performance in dairy and beef cattle. Animal. 8, 105-121.

Carpenter T.E., Chrièl M., Andersen M.M., Wulfson L., Jensen A.M., Houe H. and Greiner M. (2006). An epidemiologic study of late-term abortion in dairy cattle in Denmark, July 2000–August 2003. Prev. Vet. Med. 77, 215-229.

Committee on Bovine Reproductive Nomenclature. (1972). Recommendations for standardizing bovine reproduction terms. Cornell Vet. 62, 216-237.

De Vries A. (2006). Economic value of pregnancy in dairy cattle. J. Dairy Sci. 89, 3876-3885.

De Vries A. (2011). Economics of reproductive performance. Pp. 139-152 in Dairy Production Medicine. C.A. Risco and P.M. Retamal, Eds. Wiley-Blackwell, United Kingdom.

Ettema J.F. and Santos J.E.P. (2004). Impact of age at calving on lactation, reproduction, health, and income in first-parity Holsteins on commercial farms. J. Dairy Sci. 87, 2730-2742.

Forar A., Gay J., Hancock D. and Gay C. (1996). Fetal loss frequency in ten Holstein dairy herds. Theriogenology. 45, 1505-1513.

Forutan M., Ansari-Mahyari S. and Edriss M.A. (2016). Genetic analysis of postnatal mortality and calving traits in Iranian Holstein herds using threshold-linear models. J. Agric. Sci. Technol. 18, 961-973.

Ghavi Hossein-Zadeh N. (2014). Effect of dystocia on the productive performance and calf stillbirth in Iranian Holsteins. J. Agric. Sci. Technol. 16, 69-78.

Gilmour A.R., Gogel B.J., Cullis B.R. and Thompson R. (2006). ASReml User Guide Release 2.0. VSN International Ltd., Hemel Hempstead, HP1 1ES, United Kingdom.

Hill W.G. (2010). Understanding and using quantitative genetic variation. Philos. Trans. R. Soc. B. Biol. Sci. 365, 73-85.

Hovingh E. (2009). Abortions in Dairy Cattle-I Common Causes of Abortions. Virginia Cooperative Extension. Publication 404-288. Virginia Polytechnic Institute and State University, Blacksburg, Virginia.

Keshavarzi H., Sadeghi-Sefidmazgi A., Ghorbani G. and Kowsar R. (2016). Phenotypic analysis of abortion incidence in Iranian Holstein cows. Iranian J. Anim. Sci. 47, 409-419.

Keshavarzi H., Sadeghi-Sefidmazgi A., Kristensen A.R. and Stygar A.H. (2017). Abortion studies in Iranian dairy herds: I. Risk factors for abortion. Livest. Sci. 195, 45-52.

Murray R.D. (1990). A field investigation of causes of abortion in dairy cattle. Vet. Rec. 127, 543-547.

Norman H.D., Miller R.H., Wright J.R., Hutchison J.L. and Olson K.M. (2012). Factors ssociated with frequency of abortions recorded through dairy herd improvement test plans. J. Dairy Sci. 95, 4074-4084.

Pandey S., Singh C.V. and Barwal R.S. (2016). Selective value, quantification and genetic parameters of components of replacement traits in crossbred cattle. Vet. Med. 1, 1-5.

Pereza N., Ostojić S., Kapović M. and Peterlin B. (2017). Systematic review and meta-analysis of genetic association studies in idiopathic recurrent spontaneous abortion. Fertil. Steril. 107, 150-159.

Peter A.T. (2000). Abortions in dairy cows: New insights and economic impact. Adv. Dairy Technol. 12, 233-244.

Pfeiffer D.U., Williamson N.B. and Thornton R.N. (1997). A simple spread sheet simulation model of the economic effects of Neospora caninum abortions in dairy cattle in New Zealand. Pp. 124-129 in Proc. 8^th Int. Soc. Vet. Epidemiol. Econ. Paris, France.

Pryce J.E., Veerkamp R.F., Thompson R., Hill W.G. and Simm G. (1997). Genetic aspects of common health disorders and measures of fertility in Holstein Friesian dairy cattle. J. Anim. Sci. 65, 353-360.

Roxström A., Strandberg E., Berglund B., Emanuelson U. and Philipasson J. (2001). Genetic and environmental correlations among female fertility traits and milk production in different parities of Swedish Red and White dairy cattle. Acta. Agric. Scand. A. J. Anim. Sci. 51, 7-14.

Sargolzaei M., Iwaisaki H. and Colleau J.J. (2006). CFC: A tool for monitoring genetic diversity. Pp. 111-118 in Proc. 8^th World Cong. Genet. Appl. Livest. Prod. Belo Horizonte, Minas Gerais, Brazil.

SAS Institute. (2013). SAS^®/STAT Software, Release 9.4. SAS Institute, Inc., Cary, NC. USA.

Thurmond M.C. and Picanso J.P. (1990). A surveillance system for bovine abortion. Prev. Vet. Med. 9, 41-53.

Visscher P.M. and Goddard M.E. (1993). Fixed and random contemporary groups. J. Dairy Sci. 76, 1444-1454.

Zamani P. (2017). Statistical properties of proportional residual energy intake as a new measure of energetic efficiency. J. Dairy Res. 84, 248-253.

Zamani P., Miraei-Ashtiani S.R., Alipour D., Tabatabaei M. Aliarabi H., Saki A.A., Maleki M. and Abdolmohammadi A. (2011). Statistical analysis of some factors affecting crude protein balance in lactating dairy cows. J. Agric. Sci. Technol. 13, 1033-1043.

Zamani P., Miraei-Ashtiani S.R. and Mohammadi H. (2008). Genetic parameters of residual energy intake and its correlations with other traits in Holstein dairy cattle. Turkish J. Vet. Anim. Sci. 32, 255-261.