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Factorial and discriminant analysis on non-carcass components of Berganês lambs from different sexual classes and crossbreeding
The Journal of Agricultural Science ( IF 1.7 ) Pub Date : 2021-08-04 , DOI: 10.1017/s0021859621000563
José Renaldo Vilar da Silva Filho 1 , João Bandeira de Moura Neto 2 , Lays Thayse Alves dos Santos 3 , Clebson Oliveira Ferreira 3 , Rafael Torres de Souza Rodrigues 3 , Janaina Kelli Gomes Arandas 4 , Maria Norma Ribeiro 5 , Tadeu Vinhas Voltolini 6
Affiliation  

The aim of this study was to evaluate the non-carcass components (NCC) of Berganês ecotype lambs of different sexual classes and genotypes using univariate and multivariate statistics, carrying out two experimental trials. In order to evaluate the effects of the sexual class, non-castrated males (BNC), castrated males (BC) and females (BF) of Berganês ecotype lambs were used, with mean initial body weight of 27 ± 3.1 kg. To evaluate crossbreeding, non-castrated male lambs of the genotypes Berganês (BG), Berganês × Santa Inês (BSI) and Berganês × Dorper (BD) were used, as well as the control Dorper × Santa Inês (DSI), all with mean initial body weight of 28 ± 3.8 kg. The weight and yield of the total by-products was higher for BNC. Regarding the genotype, BSI showed higher weight and yield of internal fat, but the weight and yield of the total by-products was higher for BG and BD. In factorial analysis (FA), the NCC, more correlated with empty body weight (EBW) and total weight gain (TWG), showed higher eigenvectors for factor 1. For factor 2, the weights and yields of internal fat and total viscera obtained higher eigenvectors. The discriminant analysis (DA) classified 100% of individuals in their respective sexes and genotypes. Therefore, the FA indicated that, among the NCC evaluated, the weights of liver, kidneys, GIT, skin and feets are determinant for obtaining EBW and TWG. The classification achieved by the DA indicates that the sexual classes and genotypes are heterogeneous.

中文翻译:

不同性别等级和杂交的Berganês羔羊非胴体成分的析因和判别分析

本研究的目的是使用单变量和多变量统计数据评估不同性别类别和基因型的 Berganês 生态型羔羊的非胴体成分 (NCC),并进行了两项实验试验。为了评估性别等级的影响,使用了 Berganês 生态型羔羊的未阉割雄性 (BNC)、阉割雄性 (BC) 和雌性 (BF),平均初始体重为 27 ± 3.1 kg。为了评估杂交,使用基因型 Berganês (BG)、Berganês × Santa Inês (BSI) 和 Berganês × Dorper (BD) 以及对照 Dorper × Santa Inês (DSI) 的未阉割雄性羔羊,均具有平均初始体重 28 ± 3.8 kg。BNC 的总副产物的重量和产率较高。关于基因型,BSI 表现出更高的重量和内部脂肪产量,但 BG 和 BD 的总副产物的重量和产量较高。在因子分析 (FA) 中,与空体重 (EBW) 和总增重 (TWG) 更相关的 NCC 显示出因子 1 的更高特征向量。对于因子 2,内部脂肪和总内脏的重量和产量更高特征向量。判别分析 (DA) 将 100% 的个体按各自的性别和基因型分类。因此,FA 表示,在评估的 NCC 中,肝脏、肾脏、GIT、皮肤和脚的重量是获得 EBW 和 TWG 的决定因素。DA 实现的分类表明性别类别和基因型是异质的。显示出因子 1 的更高特征向量。对于因子 2,内部脂肪和总内脏的权重和产量获得更高的特征向量。判别分析 (DA) 将 100% 的个体按各自的性别和基因型分类。因此,FA 表示,在评估的 NCC 中,肝脏、肾脏、GIT、皮肤和脚的重量是获得 EBW 和 TWG 的决定因素。DA 实现的分类表明性别类别和基因型是异质的。显示出因子 1 的更高特征向量。对于因子 2,内部脂肪和总内脏的权重和产量获得更高的特征向量。判别分析 (DA) 将 100% 的个体按各自的性别和基因型分类。因此,FA 表示,在评估的 NCC 中,肝脏、肾脏、GIT、皮肤和脚的重量是获得 EBW 和 TWG 的决定因素。DA 实现的分类表明性别类别和基因型是异质的。皮肤和足部是获得 EBW 和 TWG 的决定因素。DA 实现的分类表明性别类别和基因型是异质的。皮肤和足部是获得 EBW 和 TWG 的决定因素。DA 实现的分类表明性别类别和基因型是异质的。
更新日期:2021-08-04
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