Relationship between body weight and scrotal circumference in growing Pelibuey sheep raised under tropical conditions

IF 0.4 4区农林科学 Q4 VETERINARY SCIENCES Arquivo Brasileiro De Medicina Veterinaria E Zootecnia Pub Date : 2023-06-01 DOI:10.1590/1678-4162-12902

M. A. Ramirez-Bautista, A. Cruz-Tamayo, M. Gastelum-Delgado, J.A. Aguilar-Quiñónez, Thobela Louis Tyasi, A. Gurgel, R. García-Herrera, A. Chay-Canul

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Abstract

ABSTRACT The body weight (BW) of an animal is a vital economic trait that might help in decision-making in the handling of animals. The objective of the present study was to develop equations for the prediction of BW in Pelibuey sheep using scrotal circumference (SC). The BW (23.40 ± 6.96 kg) and SC (20.25 ± 6.19 cm) have been recorded in 405 male Pelibuey at the Southeastern Center for Ovine Integration, Mexico. Linear, logarithmic, quadratic, exponential, cubic, and power regression models were used for data analysis. Pearson correlation (R), Coefficient of determination (R2), Adjusted coefficient of determination (Adj.R2) Root mean square error (RMSE), Akaike information criterion (AIC), and Bayesian information criterion (BIC) were used to select the best model. Power regression model showed the highest R (0.93), R2 (0.86), Adj.R2 (0.86) and lowest RMSE (0.02), AIC (-989.44) and BIC (-981.44). The current study suggests that SC might be used as the only predictor for BW of growing Pelibuey sheep raised under tropical conditions.

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热带条件下生长的Pelibuey绵羊体重与阴囊周长的关系

摘要动物的体重（BW）是一个重要的经济特征，可能有助于在处理动物时做出决策。本研究的目的是利用阴囊周长（SC）建立预测Pelibuey绵羊体重的方程。墨西哥东南部卵子整合中心的405只雄性Pelibuey记录了BW（23.40±6.96 kg）和SC（20.25±6.19 cm）。数据分析采用线性、对数、二次、指数、三次和幂回归模型。使用Pearson相关（R）、决定系数（R2）、调整决定系数（Adj.R2）均方根误差（RMSE）、Akaike信息准则（AIC）和贝叶斯信息准则（BIC）来选择最佳模型。功率回归模型显示R最高（0.93），R2最高（0.86），Adj.R2最高（0.8 6），RMSE最低（0.02），AIC最低（989.44），BIC最低（-981.44）。

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来源期刊

Arquivo Brasileiro De Medicina Veterinaria E Zootecnia 农林科学-兽医学

CiteScore

0.80

自引率

25.00%

发文量

111

审稿时长

9-18 weeks

期刊介绍： Publica artigos originais de pesquisa sobre temas de medicina veterinária, zootecnia, tecnologia e inspeção de produtos de origem animal e áreas afins relacionadas com a produção animal. Atualmente a revista mantém 628 permutas (419 internacionais e 209 nacionais), sendo um verdadeiro suporte para o recebimento de periódicos pela Biblioteca da Escola. A partir de 1999, a Escola de Veterinária delegou à FEP MVZ Editora o encargo do gerenciamento e edição de todas suas publicações, inclusive do Arquivo, ficando somente com o apoio logístico (instalações, equipamentos, pessoal etc.). O apoio financeiro é exercido pelo CNPq/FINEP e pela própria FEP MVZ.