DETERMINATION OF SOME EFFECTIVE FACTORS ON REPRODUCTIVE PERFORMANCE OF HOLSTEIN COWS IN WEST AND EAST AZERBAIJAN PROVINCES

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SALEHI S.; ZARE SHAHNEH A.; SAYYADNEJAD M.B.; ABDULLAHPOUR R.

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Paper Information

Journal: ANIMAL SCIENCE RESEARCHES (FACULTY OF AGRICULTURE, UNIVERSITY OF TABRIZ) Year:2011 | Volume:21 | Issue:1 Page(s): 117-126

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Title

DETERMINATION OF SOME EFFECTIVE FACTORS ON REPRODUCTIVE PERFORMANCE OF HOLSTEIN COWS IN WEST AND EAST AZERBAIJAN PROVINCES

Author(s)

SALEHI S. | ZARE SHAHNEH A. | SAYYADNEJAD M.B. | ABDULLAHPOUR R. | Issue Writer Certificate

Keywords

HOLSTEIN COWQ3

REPRODUCTIVE PERFORMANCEQ2

WEST AND EAST AZERBAIJANQ2

Abstract

To study calving interval and days open of HOLSTEIN COWs in WEST AND EAST AZERBAIJAN Provinces and the effects of some factors on them, 2213 records from ten herds collected during years 2000 to 2008 were used. The statistical analysis of data was done with proc. GLM (generalized linear models procedure) of SAS. The mean (±SE) of calving interval and days open were 395.12 ± 1.36 and 115.38±2.98 days, respectively. Effects of herd, lactation number, year of calving and milk yield on calving interval were significant (P<0.05). Effect of sex of calf on REPRODUCTIVE PERFORMANCE was not significant.Milk yield was increased from years 2000 to 2008. The relationship between milk yield and days open was not significant. It is important to give more emphasis on reproductive traits besides production traits to improve them in the herds of these two provinces.

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APA: Copy

SALEHI, S., ZARE SHAHNEH, A., SAYYADNEJAD, M.B., & ABDULLAHPOUR, R.. (2011). DETERMINATION OF SOME EFFECTIVE FACTORS ON REPRODUCTIVE PERFORMANCE OF HOLSTEIN COWS IN WEST AND EAST AZERBAIJAN PROVINCES. ANIMAL SCIENCE RESEARCHES (FACULTY OF AGRICULTURE, UNIVERSITY OF TABRIZ), 21(1), 117-126. SID. https://sid.ir/paper/147482/en

Vancouver: Copy

SALEHI S., ZARE SHAHNEH A., SAYYADNEJAD M.B., ABDULLAHPOUR R.. DETERMINATION OF SOME EFFECTIVE FACTORS ON REPRODUCTIVE PERFORMANCE OF HOLSTEIN COWS IN WEST AND EAST AZERBAIJAN PROVINCES. ANIMAL SCIENCE RESEARCHES (FACULTY OF AGRICULTURE, UNIVERSITY OF TABRIZ)[Internet]. 2011;21(1):117-126. Available from: https://sid.ir/paper/147482/en

IEEE: Copy

S. SALEHI, A. ZARE SHAHNEH, M.B. SAYYADNEJAD, and R. ABDULLAHPOUR, “DETERMINATION OF SOME EFFECTIVE FACTORS ON REPRODUCTIVE PERFORMANCE OF HOLSTEIN COWS IN WEST AND EAST AZERBAIJAN PROVINCES,” ANIMAL SCIENCE RESEARCHES (FACULTY OF AGRICULTURE, UNIVERSITY OF TABRIZ), vol. 21, no. 1, pp. 117–126, 2011, [Online]. Available: https://sid.ir/paper/147482/en

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