Genetic and environmental factors that affect tick infestation in Nelore x Angus crossbreed cattle

GL Feltes, VT Michelotti, AM Prestes, PRN Rorato… - Ciência Rural, 2021 - SciELO Brasil
This study evaluated the effects of seasons and latitude on tick counting and determined the
best model to estimate genetic parameters for tick count and hair coat. Records of animals …

Genetic evaluation of age at first calving for Guzerá beef cattle using linear, threshold, and survival Bayesian models

LC Brito, J Casellas, L Varona, PS Lopes… - Journal of Animal …, 2018 - academic.oup.com
Age at first calving (AFC) is characterized as a censored trait due to missing values provided
by recording mistakes and nonoccurrence or delay in calving communication. In this context …

[HTML][HTML] Genetic parameters for growth, reproductive, and carcass traits in Tabapuã cattle

TC Freitas, HT Ventura, FF Silva… - Revista Brasileira de …, 2022 - SciELO Brasil
We aimed to estimate genetic parameters for growth, reproductive, and carcass traits in
Tabapuã cattle. Phenotypic data were collected between 1990 and 2019 in 1,218 farms, and …

Índice de seleção para reposição de fêmeas em rebanhos de caprinos de corte

WP da Silva Oliveira… - Brazilian Journal …, 2020 - ojs.brazilianjournals.com.br
Objetivou-se avaliar opções de ordenar os animais com base em características fenotípicas
inseridas em índices de seleção construído em planilha eletrônica, para auxiliar na …