Volume 8, Issue 18 (3-2018)                   rap 2018, 8(18): 168-176 | Back to browse issues page

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Behmaram R, Esrafili Tazeh Kandemohammadiyeh M, Hedayat Evrigh N. The Effect of Inbreeding on Some of Productive and Reproductive Traits of Holestein Cows in Moghan Agro- Industrial Company. rap. 2018; 8 (18) :168-176
URL: http://rap.sanru.ac.ir/article-1-909-en.html
Abstract:   (4443 Views)
This research was done to estimate of inbreeding coefficient and its effect on some of productive and reproductive traits in Moghan agro-industrial company Holstein cows with using of 17966 Holstein cows pedigree data from 2007 to 2016. For preparing and editing of data, estimate of inbreeding coefficient and traits regression content from inbreeding Fox pro, Excel, CFC and Wombat softwares were used respectively. 32.12 percent of total animals were inbreed. Inbreeding coefficient average for total population and inbreed animals in this study was calculated 0.56% and 1.85% respectively. The lowest and highest inbreeding amount in this herd was observed 0.78% and 37.5% respectively. Inbreeding depression for 1% increasing of inbreeding for milk production, number of days in milk, open days and age at first calving were estimated -15.14 kg, -1.60, 0.09 and 0.40 day respectively, except for age at first calving was not statistically significant (P>0.01). The results of this research showed, in compare with the other similar population, average of inbreeding coefficient was lower in this herd that could be related to factors like preventing of very close inbreeding and tending to controlled mating.
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Type of Study: Research | Subject: Special
Received: 2018/02/28 | Revised: 2018/03/3 | Accepted: 2018/02/28 | Published: 2018/02/28

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