Letter to Editor

Estimation of live weights at the beginning and the end of grazing season in Tuj lambs via scores of factor analysis

Volume: 65 Number: 3 September 1, 2018
  • Kadir Önk
  • Mehmet Sarı
  • İsmayil Safa Gürcan
TR EN

Estimation of live weights at the beginning and the end of grazing season in Tuj lambs via scores of factor analysis

Abstract

This study was conducted in order to eliminate multicollinearity between body measurements of Tuj lambs and to estimate their live weights in the beginning and the end of grazing season (GS) using factor analysis scores, which were determined by calculating some body measurements, in multiple regression model. For this purpose, the material of the study consisted of 297 Tuj lambs born between 2009 and 2013. Live weights (LW) of lambs in the beginning and at the end of GS and body length (BL), withers height (WH), chest girth (CG), chest depth (CD), circumferences of cannon forelimb (CCF) and circumferences cannon hindlimb (CCH) measurements were analyzed in the study. Factor analysis were used to determine the estimated equation between the characteristics. It was determined that there was a multicollinearity between, CCF and CCH measured at the beginning of GS. Problem of multicollinearity between independent variables was eliminated by using factor scores (FS) determined by factor analysis in multiple regression models. Consequently, two factors were detected from results of factor analysis applied to body measurements to determine live weights of Tuj lambs in the beginning and at the end of GS. These factors for LW in the beginning and at the end of GS were found to explain 84.8% and 78.9% of total variance, respectively. Thereby, it was revealed that more accurate estimations could be made by using factor analysis scores in estimating live weights of Tuj lambs at the beginning and the end of GS. In addition, it was concluded that applying factor analysis scores derived from independent variables decreased mistake in the model according to least squares method

Keywords

References

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Details

Primary Language

English

Subjects

Veterinary Surgery

Journal Section

Letter to Editor

Authors

Kadir Önk This is me

Mehmet Sarı This is me

İsmayil Safa Gürcan This is me

Publication Date

September 1, 2018

Submission Date

September 1, 2018

Acceptance Date

-

Published in Issue

Year 2018 Volume: 65 Number: 3

APA
Önk, K., Sarı, M., & Gürcan, İ. S. (2018). Estimation of live weights at the beginning and the end of grazing season in Tuj lambs via scores of factor analysis. Ankara Üniversitesi Veteriner Fakültesi Dergisi, 65(3), 261-266. https://doi.org/10.1501/Vetfak_0000002855
AMA
1.Önk K, Sarı M, Gürcan İS. Estimation of live weights at the beginning and the end of grazing season in Tuj lambs via scores of factor analysis. Ankara Univ Vet Fak Derg. 2018;65(3):261-266. doi:10.1501/Vetfak_0000002855
Chicago
Önk, Kadir, Mehmet Sarı, and İsmayil Safa Gürcan. 2018. “Estimation of Live Weights at the Beginning and the End of Grazing Season in Tuj Lambs via Scores of Factor Analysis”. Ankara Üniversitesi Veteriner Fakültesi Dergisi 65 (3): 261-66. https://doi.org/10.1501/Vetfak_0000002855.
EndNote
Önk K, Sarı M, Gürcan İS (September 1, 2018) Estimation of live weights at the beginning and the end of grazing season in Tuj lambs via scores of factor analysis. Ankara Üniversitesi Veteriner Fakültesi Dergisi 65 3 261–266.
IEEE
[1]K. Önk, M. Sarı, and İ. S. Gürcan, “Estimation of live weights at the beginning and the end of grazing season in Tuj lambs via scores of factor analysis”, Ankara Univ Vet Fak Derg, vol. 65, no. 3, pp. 261–266, Sept. 2018, doi: 10.1501/Vetfak_0000002855.
ISNAD
Önk, Kadir - Sarı, Mehmet - Gürcan, İsmayil Safa. “Estimation of Live Weights at the Beginning and the End of Grazing Season in Tuj Lambs via Scores of Factor Analysis”. Ankara Üniversitesi Veteriner Fakültesi Dergisi 65/3 (September 1, 2018): 261-266. https://doi.org/10.1501/Vetfak_0000002855.
JAMA
1.Önk K, Sarı M, Gürcan İS. Estimation of live weights at the beginning and the end of grazing season in Tuj lambs via scores of factor analysis. Ankara Univ Vet Fak Derg. 2018;65:261–266.
MLA
Önk, Kadir, et al. “Estimation of Live Weights at the Beginning and the End of Grazing Season in Tuj Lambs via Scores of Factor Analysis”. Ankara Üniversitesi Veteriner Fakültesi Dergisi, vol. 65, no. 3, Sept. 2018, pp. 261-6, doi:10.1501/Vetfak_0000002855.
Vancouver
1.Kadir Önk, Mehmet Sarı, İsmayil Safa Gürcan. Estimation of live weights at the beginning and the end of grazing season in Tuj lambs via scores of factor analysis. Ankara Univ Vet Fak Derg. 2018 Sep. 1;65(3):261-6. doi:10.1501/Vetfak_0000002855

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