Evaluation of growth performance and reproductive traits at puberty and attainment of sexual maturity in Bos indicus Nelore bulls raised in pasture management systems
The objective of this study was to characterize the sexual development of 48 Nelore bulls by associating the findings of sperm analyses with growth traits and ultrasound-measured testicular traits. Bulls were evaluated from 14.3 to 24.6 months old at intervals of 28 days, totaling 12 observations per animal. Data were subjected to repeated-measures analyses of variance over time (PROC MIXED, SAS 9.2) and equations for semen traits were developed using stepwise regression (PROC REG, SAS 9.2). Regarding the growth [...]
Authors
- Lindsay Unno Gimenes (ORCID: https://orcid.org/0000-0002-7644-675X)
- Natália Marins Bastos (ORCID: https://orcid.org/0000-0001-8189-5085)
- Gisele Zoccal Mingoti (ORCID: https://orcid.org/0000-0002-3059-4458)
- Guilherme Fazan Rossi (ORCID: https://orcid.org/0000-0002-8786-2839)
- Erika Aline Ribeiro Dias (ORCID: https://orcid.org/0000-0003-4986-884X)
- Dayane Priscila Vrisman
- Maria Eugênia Zerlotti Mercadante (ORCID: https://orcid.org/0000-0002-1218-5378)
- Flávia Fernanda Simili (ORCID: https://orcid.org/0000-0001-8286-2672)
- Naiara Nantes Rodrigues (ORCID: https://orcid.org/0000-0001-5580-9606)
- Fábio Morato Monteiro (ORCID: https://orcid.org/0000-0003-4344-4667)
- Joaquim Mansano Garcia
Publication Details
- Journal
- Revista Brasileira de Zootecnia
- Published
- 2025-01-01
- DOI
- https://doi.org/10.37496/rbz5420240109
- Citations
- 1
- Primary Topic
- Genetic and phenotypic traits in livestock
- Type
- article
- Field-Weighted Citation Impact
- 1.82
Funders
- Fundação de Amparo à Pesquisa do Estado de São Paulo
- Coordenação de Aperfeiçoamento de Pessoal de Nível Superior