de Oliveira Santos Dimas, de Araujo Neto Francisco Ribeiro, de Abreu Santos Daniel Jordan, Dos Santos Fabiana Ramos, Aspilcueta-Borquis Rusbel Raul, de Queiroz Sandra Aidar, Tonhati Humberto
State University of the Southwest of Bahia, Itapetinga, Bahia, 45700-000, Brazil.
Instituto Federal Goiano, Campus Rio Verde, km1, Cx. Postal 66, Rio Verde, Goiás, CEP 75901-970, Brazil.
Trop Anim Health Prod. 2020 Jan;52(1):243-247. doi: 10.1007/s11250-019-02008-8. Epub 2019 Jul 17.
This study was carried out to estimate genetic parameters for morphology, body weight, and tonic immobility traits in the red-winged tinamou (Rhynchotus rufescens). Information on 690 birds was used and genetic parameters were estimated using Bayesian methods under a multi-trait animal model. The following traits were considered in this study: tarsal length (TL), bill length (BL), wing length (WL), head width (HW), bill width (BW), mature weight (MW), weight at 90 days (W90), and tonic immobility (TI). The heritability showed estimates between 0.15 for wing length and 0.56 for bill length. Positive and negative genetic correlations were estimated, ranging from - 0.33 to 0.81. All the morphological, production, and behavioral traits studied will have moderate to high response to selection. The body weight at 90 days is a better alternative for use in breeding programs and its selection would not lead to an increase in the time of tonic immobility. Both the selection for weight gain and for reduction of tonic immobility time would lead to an increase in the size of the legs of the red-winged tinamou, which could be advantageous for thermal control of these birds in tropical systems.
本研究旨在估计红翅䳍（Rhynchotus rufescens）形态、体重和强直静止性状的遗传参数。研究使用了690只鸟类的信息，并在多性状动物模型下采用贝叶斯方法估计遗传参数。本研究考虑了以下性状：跗跖长度（TL）、喙长（BL）、翅长（WL）、头宽（HW）、喙宽（BW）、成熟体重（MW）、90日龄体重（W90）和强直静止（TI）。遗传力估计值在翅长的0.15至喙长的0.56之间。估计出的遗传相关为正相关和负相关，范围从 -0.33至0.81。所研究的所有形态、生产和行为性状对选择都将有中度到高度的响应。90日龄体重是育种计划中更好的选择，选择该性状不会导致强直静止时间增加。选择增加体重和减少强直静止时间都将导致红翅䳍腿部尺寸增加，这对于这些鸟类在热带系统中的体温调节可能是有利的。
