The analysis of reproductive traits in some of Holstein dairy cows in Shahrekord (1387 to 1393)

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MADAHI N.; MEHRBAN H.; KARIMI DEHKORDI S.; MOHARRERY A.; KADIVAR A.

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Journal: IRANIAN JOURNAL OF VETERINARY CLINICAL SCIENCES Year:2018 | Volume:12 | Issue:1 Page(s): 91-99

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Title

The analysis of reproductive traits in some of Holstein dairy cows in Shahrekord (1387 to 1393)

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Keywords

Likelihood Ratio TestQ1

Reproduction performanceQ1

Repeated Linear ModelQ1

Lease Square MeanQ1

Abstract

In present study to evaluate reproductive traits in Holstein cows, 792 records from 405 dairy cows that calved during 2006 to 2014 were analyzed. Repeated Linear Model was used to statistical analysis of days to first services, interval from first to last insemination and open days. The mean values for days to first services, interval from first to last insemination and open days was 80. 0, 52. 0 and 134. 1 days, respectively. Least-squares means in days to first service traits were different among the herds, years and season of the birth (P<0. 05), but parities were ineffective on this trait (P > 0. 05), while in open days' trait only herds and calving years were significantly different (P < 0. 05) and the parities and calving season were ineffective on this trait (P>0. 05) However, from first to last insemination trait, only the number of services affect this trait (P<0. 05). Comparing the herds with optimum situation showed that the situation is very bad for the first to last insemination, the situation is not so desirable from days to first service and days open traits.

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APA: Copy

MADAHI, N., MEHRBAN, H., KARIMI DEHKORDI, S., MOHARRERY, A., & KADIVAR, A.. (2018). The analysis of reproductive traits in some of Holstein dairy cows in Shahrekord (1387 to 1393). IRANIAN JOURNAL OF VETERINARY CLINICAL SCIENCES, 12(1 ), 91-99. SID. https://sid.ir/paper/260110/en

Vancouver: Copy

MADAHI N., MEHRBAN H., KARIMI DEHKORDI S., MOHARRERY A., KADIVAR A.. The analysis of reproductive traits in some of Holstein dairy cows in Shahrekord (1387 to 1393). IRANIAN JOURNAL OF VETERINARY CLINICAL SCIENCES[Internet]. 2018;12(1 ):91-99. Available from: https://sid.ir/paper/260110/en

IEEE: Copy

N. MADAHI, H. MEHRBAN, S. KARIMI DEHKORDI, A. MOHARRERY, and A. KADIVAR, “The analysis of reproductive traits in some of Holstein dairy cows in Shahrekord (1387 to 1393),” IRANIAN JOURNAL OF VETERINARY CLINICAL SCIENCES, vol. 12, no. 1 , pp. 91–99, 2018, [Online]. Available: https://sid.ir/paper/260110/en

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