Calving date as a potential predictor for the probability of approval in the first breeding soundness evaluation of Nellore bulls

Beef production systems primarily use natural service (NS) for breeding. However, a significant number of bulls used for NS are subfertile, limiting the profitability of the cow-calf operations. Therefore, producers should select bulls based on breeding soundness evolutions (BSE) to ensure higher pr...

Full description

Saved in:
Bibliographic Details
Published in:Reproduction in domestic animals 2023-09, Vol.58 (9), p.1225-1233
Main Authors: Diaz-Miranda, Edgar Andres, Penitente-Filho, Jurandy Mauro, Gomez-Leon, Victor Enrique, Lopez, Camilo Jose Ramirez, Villadiego, Faider Alberto Castaño, Okano, Denise Silva, Neto, Tamires Miranda, Guimarães, Simone Facioni, Siqueira, Jeanne Broch, Guimarães, José Domingos
Format: Article
Language:English
Subjects:
Biometrics
Breeding
Breeding seasons
Correlation coefficient
Correlation coefficients
Economics
Profitability
Seasons
Semen
Statistical analysis
Citations: Items that this one cites
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Beef production systems primarily use natural service (NS) for breeding. However, a significant number of bulls used for NS are subfertile, limiting the profitability of the cow-calf operations. Therefore, producers should select bulls based on breeding soundness evolutions (BSE) to ensure higher pregnancy rates. Several factors can affect the bull ability to pass a BSE. We hypothesize that calving date would be a factor that affects the bull probability of approval at the first BSE. For this purpose, a multivariate logistic regression in a dataset of 14,737 BSEs from young Nellore bulls was used. Correlations between calving date, biometrics, and semen traits were evaluated using Pearson`s correlation coefficient. Our results demonstrated that the calving date affected the probability of approval at the first BSE (P
ISSN:0936-6768
1439-0531
DOI:10.1111/rda.14422