Body weight prediction model analysis based on the body size of female Sakub sheep in Brebes District, Indonesia

Jannah, Zaenab Nurul and Atmoko, Bayu Andri and Ibrahim, Alek and Harahap, Muhammad Ainsyar and Panjono, Panjono (2023) Body weight prediction model analysis based on the body size of female Sakub sheep in Brebes District, Indonesia. Biodiversitas, 24 (7). 3657 – 3664. ISSN 1412033X

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Abstract

Calculation of body weight is one of the important factors in seeing the performance of sheep (Ovis aries), breeding stock selection, and livestock management, such as the basis for consideration of feeding, medicine dosage, slaughter time, and growth evaluation. However, in smallholder farms, the availability of scales is an obstacle, not to mention the inadequacy of the pens’ construction, making the weighing process more difficult. The present study was conducted to analyze correlation and regression models and determine the best and most accurate regression model for predicting the body weight of female Sakub sheep using body sizes. Data on 150 female Sakub sheep kept by smallholder farmers and raised intensively in Paguyangan and Sirampog District, Brebes District, Central Java, Indonesia, were obtained. The Body Weight (BW) of Sakub sheep was weighed, and their body sizes, including body length (BL), chest girth (CG), and shoulder height (SH) were measured. The correlation was calculated using the Pearson correlation, regression models were analyzed and determined using simple, multiple, and automatic linear regression methods. Pooled means of 36.21±12.31 kg for BW and 67.13±7.97, 82.51±10.47, and 65.76±6.24 cm for BL, CG, and SH, respectively, were obtained in the present study. The body size has a positive and high correlation with BW, BL has the highest correlation with BW, which is 0.810, followed by CG (0.807) and SH (0.782). Meanwhile, the correlation of body size combination between BL, CG, and WH has the highest value, 0.883, followed by BL and CG (0.875), between CG and SH (0.875). The best body size and the most accurate (77.40) to predict BW of female Sakub sheep is the combination of the thr ee BL+CG+SH with regression equation model BW = 67,004+0.589BL+0.453CG+0.399SH. Meanwhile, the prediction of BW with a single body size is BL with the regression equation BW =-47,658 + 1,249BL with an accuracy of 65.40. This study concludes that body size, namely BL, CG, and SH, can be used to predict BW of female Sakub sheep, either single or in 2 or 3 combinations. The prediction model BW using a combination of 3 body sizes has the highest accuracy, followed by a combination of 2 body sizes (BL+CG), and the last is BL as a single predictor. © 2023, Society for Indonesian Biodiversity. All rights reserved.

Item Type: Article
Additional Information: Cited by: 1; All Open Access, Gold Open Access
Uncontrolled Keywords: Bio prediction, correlation analysis, phenotypic characteristics, regression model, Sakub sheep
Subjects: S Agriculture > SF Animal culture
Divisions: Faculty of Animal Sciences > Department of Animal Nutrition and Feed Science
Depositing User: Uminurida SUCIATI
Date Deposited: 13 Sep 2024 03:03
Last Modified: 13 Sep 2024 03:03
URI: https://ir.lib.ugm.ac.id/id/eprint/6985

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