An analysis of the factors affecting birth weight and actual milk yield in Swedish red cattle using regression tree analysis. | [Journal of Animal and Plant sciences • 2010]

Author(s):

1. M. Topal: Atatürk University, Faculty of Agriculture, Department of Biometry and Genetics, Erzurum, Turkey

2. A. M. Yaganoglu: Atatürk University, Faculty of Agriculture, Department of Biometry and Genetics, Erzurum, Turkey

3. V. Aksakal: Gumushane University, Aydin Dogan Vocational School, Kelkit, Gumushane, Turkey

4. B. Bayram: Gumushane University, Aydin Dogan Vocational School, Kelkit, Gumushane, Turkey

Abstract:

Performance records (birth weight and actual milk yield) on 206 Swedish Red cattle maintained at private organic diary cattle enterprise in Kelkit district of Gümüshane province, in Turkey, were analyzed through regression tree method to determine the effects of some factors affecting birth weight and actual milk yield. The birth weight of calves averaged as 41.034±4.218 kg. Out of total calves born, twin born calves were 2.9 %. Single born calves were heavier (41.185±3.840 kg) than twin born (36.000±10.545 kg). The results revealed that the most significant variable affecting birth weight was birth type, followed by birth season, sex and body condition score (BCS2) of the dam during birth. Lactation period and peak milk yield were important variables affecting the actual milk yield in the dairy herd under investigation.

Page(s): 63-69

DOI: DOI not available

Published: Journal: Journal of Animal and Plant sciences, Volume: 20, Issue: 2, Year: 2010

Keywords:

Keywords are not available for this article.

References:

[1] Topal M.,Aksakal V.,Bayram B.,A.M. B. .2010 .An analysis of the factors affecting birth weight and actual milk yield in Swedish Red cattle using Regression Tree analysis. The J. Anim. Plant. Sci, 20(2) : 63-69.

[2] Topal M.,Aksakal V.,Bayram B.,Yaganoglu A.M. .2010 .An analysis of the factors affecting birth weight and actual milk yield in Swedish red cattle using regression tree analysis. J. Anim. Pl. Sci., 20 : 63-69.

[3] Topal M.,Aksakal V.,Bayram B.,M. B. .2010 .An analysis of the factors affecting birth weight and actual milk yield in Swedish Red Cattle using regression tree analysis. The J. Anim.Plant Sci., 20(2) : 1018-7081.

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