The Effect of Non-Genetic Factors on the Linear Type Traits in Brown Swiss Cows Reared in Eastern Region of Turkey
Abstract
The study was carried out to investigate the magnitude of non-genetic factors affecting linear type traits in Brown Swiss cattle. For this purpose, 474 observations for the 16 linear type traits on 135 cattle were made. Statistical model used in this research included fixed effects of herd, parity, scorer, stage of lactation, season at classification. Additionally, the age at classification was included to the model as linear and quadratic covariates. Average linear scores for chest width, body depth, angularity, foot angle, rear leg (side view), rear leg (rear view), rump angle, rump width, fore udder attachment, rear udder attachment width, rear udder attachment height, teat placement (rear view), teat placement (side view), teat length, central ligament and udder depth were 5.5±0.1, 6.1±0.1, 5.2±0.1, 4.7±0.1, 4.4±0.1, 4.4±0.1, 5.6±0.1, 5.0±0.1, 5.8±0.1, 5.4±0.1, 6.1±0.1, 5.1±0.1, 4.1±0.1, 5.8±0.1, 5.8±0.1, 6.6±0.1 respectively. Scorers did not have significant effect on all type traits except for the body depth and rear udder attachment width (P<0.01). On the other hand, herd, parity, stage of lactation as well as season at classification affected significantly most of the linear type traits. The linear and quadratic effects of age at classification on the most of linear type traits were also significant. Phenotypic correlations among the linear type traits were in low to medium range.
Keywords
References
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Details
Primary Language
English
Subjects
-
Journal Section
Research Article
Publication Date
December 29, 2018
Submission Date
July 7, 2018
Acceptance Date
September 20, 2018
Published in Issue
Year 2018 Volume: 33 Number: 2
Cited By
Effect of non-genetic factors on linear type traits in Karan fries (Bos taurus × Bos indicus) and Sahiwal (Bos indicus) cows in sub-tropical climatic conditions of India
Animal Biotechnology
https://doi.org/10.1080/10495398.2022.2036175