Loading...
Please wait, while we are loading the content...
Similar Documents
The importance of updated criteria in breeding soundness examination of commercial Nellore bulls for the herd reproductive improvement
| Content Provider | Scilit |
|---|---|
| Author | Diniz, J. H. W. Teixeira, A. C. B. Riveros, J. A. N. Peres, R. F. G. Fonseca, D. Q. Cunha, E. C. R. Vilela, V. M. T. Silva, D. F. Leo, A. M. P. Palhares, R. C. F. T. Oliveira, L. Z. |
| Copyright Year | 2021 |
| Description | The aim of this work was to compare results of breeding soundness examination (BSE) of Nellore bulls (n=1257) according to evaluation criteria from two different classification tables (traditional-Table1 used since 1997 and an updated-Table2-proposed in 2020). Data were separated into 3 categories: questionable animals in Table1 and Table2 (Q1Q2), animals approved in Table1 and questionable in Table2 (A1Q2) and animals approved in Table1 and Table2 (A1A2). BSE parameters were submitted to ANOVA (P<005), according to age groups. Higher (P48m=38.6±1.7cm) compared to A1Q2 (18-24m=29.05±0.98cm; 24-36m=30.3±0.6cm; 36-48m=32.9±1.0cm; >48m=34.8±1.0cm) and to Q1Q2 (24-36m=26.8±2.0cm; 36-48m=30.0±0.1cm; >48m=31.3±1.1cm), for all age groups. At the age of 36-48months (Q1Q2=2.7±0.3; A1Q2=3.2±0.3; A1A2=3.3±0.6) and >48months (Q1Q2=3.0±0.4; A1Q2=3.3±0.5; A1A2=3.4±0.5), animals with better andrological classifications presented higher (P48m, higher sperm Motility (P=0.0250) and Vigor (P=0.0335) were observed in animals A1Q2 (Mot=55.5±14.7%; V=3.21±0.82) and A1A2 (Mot=55.8±12.2%; V=3.23±0.81) compared to Q1Q2 (Mot=50.2±17.4%; V=2.77±0.82). It was concluded that bulls approved using strict selection criteria demonstrated higher PE and BCS, regardless of the age. The utilization of updated classification tables is highly recommended for further reproductive potential development of Nellore bulls in the field. |
| Related Links | http://www.scielo.br/pdf/abmvz/v73n2/0102-0935-abmvz-73-02-285.pdf |
| Ending Page | 292 |
| Page Count | 8 |
| Starting Page | 285 |
| ISSN | 01020935 |
| e-ISSN | 01020935 |
| DOI | 10.1590/1678-4162-12151 |
| Journal | Arquivo Brasileiro de Medicina Veterinária E Zootecnia |
| Issue Number | 2 |
| Volume Number | 73 |
| Language | English |
| Publisher | FapUNIFESP (SciELO) |
| Publisher Date | 2021-03-01 |
| Access Restriction | Open |
| Subject Keyword | Arquivo Brasileiro de Medicina Veterinária E Zootecnia Veterinary Sciences Scrotal Perimeter Classification Tables |
| Content Type | Text |
| Resource Type | Article |
| Subject | Veterinary |
