Genetic evaluation for productive and reproductive traits in Holstein Friesian cows under subtropical condition

SHYMA M EL-KOMY; A M RASHAD

doi:10.56093/ijans.v91i11.118132

Authors

SHYMA M EL-KOMY Animal Production Department, Tanta University, Egypt
A M RASHAD Animal Production Department, Alexandria University, Alexandria 22545, Egypt

https://doi.org/10.56093/ijans.v91i11.118132

Keywords:

Genetic evaluation, Holstein cows, Productive, Reproductive

Abstract

Lactation records (1,017) of Holstein cows, kept in private dairy farm in Egypt, from 2008 to 2015 were used for the study. The objectives were to estimate the effect of some factors on performance and estimate some genetic parameters. Traits studied were 305 day milk yield (305-dMY), lactation period (LP), peak milk yield (PY), number of services per conception (NSC), days open (DO) and calving interval (CI). Data were analyzed using Multi Traits Animal Model. Least squares means were 4436 kg, 215 d and 37 kg for 305-dMY, LP and PY, respectively, and 3.45, 182 d, and 452 d for NSC, DO and CI, respectively. Season and year of calving and parity had significant effects on all traits, except that of year of calving on PY and parity on NSC. Sire had significant effect only on 305- dMY and PY. Estimates of heritability for 305-dMY, LP, PY, NSC, DO and CI were 0.20, 0.07, 0.19, 0.07, 0.03 and 0.07, respectively. Phenotypic correlations among productive or reproductive traits were positive and between productive and reproductive traits were likewise positive. Genetic correlations among productive or reproductive traits ranged from 0.75 to 0.80 and 0.22 to 0.45, respectively.

Downloads

Download data is not yet available.

References

Bahreini M R, Amini A A, Aslaminejad A A and Tahmoorespour M. 2013. Estimation of genetic parameter for production traits of Iranian Holstein dairy cattle. Livestock Research for Rural Development 25: 156.

Boldman K C, Kriese L A, Van Vleck L D, Van Tassell C P and Kachman S D. 1995. Manual for use of MTDFREML. Lincoln, USA. Department of Agriculture, Agricultural Research Service p. 120.

El-Arian M N and Shalaby N A. 2001. Genetic analysis for lactation curve traits and persistency indices for Friesian cattle in Egypt. Mansoura University Journal of Agricultural Science (Egypt) 26: 207–16.

El-Arian M N, El-Awady H G and Khattab A S. 2003. Genetic analysis for productive traits of Holstein Friesian cows in Egypt through MTDFREML Program. Egyptian Journal of Animal Production 40: 99–109.

El-Nady S S. 1996. ‘Genetic study for fertility traits in a herd of Friesian cattle in Egypt’. M.Sc. Thesis. Faculty of Agriculture, Tanta University, Egypt. El-Shalmani A F. 2011. ‘Evaluation of production performance in relation to genetic structure of some economical traits in Friesian cows’. Ph.D. Thesis. Faculty of Agriculture, Saba Basha, Alexandria University, Egypt.

Goshu G, Singh H, Petersson K J and Lundeheim N. 2014. Heritability and correlation among first lactation traits in

Holstein Friesian cows at Holeta Bull dam station. International Journal of Livestock Production 5: 47–53.

Kafidi M P C, Leroy P, Michaux C and Francois A. 1992. Relationship between milk production and current calving

interval in Belgian Black and White breed. Journal of Animal Breeding and Genetics 109: 136–43.

Khattab A S and Atil H. 1999. Genetic study of fertility traits and productive in a local born Friesian cattle in Egypt. Pakistan Journal of Biological Sciences 2(4): 1178–83

Mariam M H, Bowman P J and Pryce J E. 2013. Genetic analyses of fertility and production traits in Holstein herds with low and high mean calving intervals and in Jersey herds. Journal of Dairy Science 96: 655–67.

Mostafa M A. 2001. Relationship between milk production and postpartum reproductive performance in Friesian cows. Mansoura University Journal of Agricultural Sciences (Egypt) 26: 1909–20.

Noweir A M. 2006. ‘A comparison between sire model and animal model for some economic traits on Friesian cattle in Egypt’.

M.Sc. Thesis. Faculty of Agriculture, Tanta University, Egypt. Rashad A M. 2013. ‘Evaluation of performance of some dairy herds in Egypt’. Ph.D. Thesis. Faculty of Agriculture, Alexandria University, Egypt.

SAS. 2004. Statistical Analysis System User’s Guide (version 9). SAS Institute. Inc. Cary. North Carolina. USA.