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- Title
MORFOMETRIA TESTICULAR DE BOVINOS MESTIÇOS JOVENS SUBMETIDOS A DIFERENTES ESTRATÉGIAS DE SUPLEMENTAÇÃO ENERGÉTICA DE PASTAGEM DE Brachiaria Brizantha.
- Authors
Rezende, Pedro Leonardo de Paula; Pádua, João Restle2 João Teodoro; de Resende Fernandes, Juliano José; Neto, Marcondes Dias de Freitas; Fortes, E Bruno Duarte Alves
- Abstract
The objective of this study was to correlate the testicular measurements and weight gain, as well as the possible influence of the feeding level on the morphometry of the testicles of 32 crossbred Holstein/Zebu, in sexual development process, kept in Brachiaria brizantha pasture submitted to two levels of energy supplementation (0.5% and 1.0% of LW, TM and TH) during the second half of the rainy season. In vivo growth of scrotal perimeter and the final measures of the glandular portion of the testicles according to the perimeter, length, width, volume, weight and shape were evaluated. The correlation coefficients between the testicular measures and weight gain were moderately positive, ranging between 0.12 and 0.32. The frequency analysis showed that long testicles of long prevailed in both treatments, with respectively 65% and 54% for TM and TH. There was a significant effect (p <0.05) of the feed system on the in vivo gain of scrotal perimeter in favor of the high level of supplementation (TH), which gained 5.93 cm versus 3.71 cm of the TM group. There was no significant effect (p> 0.05) of the feeding level on the testicles glandular measures. It was concluded that these characteristics are determined by the stage of sexual development and not by the feeding level and the testicular measures should not be used alone as a criterion for assessing the performance of crossbreed young bulls.
- Subjects
WEIGHT gain; MORPHOMETRICS; TESTIS; BRACHIARIA; HOLSTEIN-Friesian cattle; GLANDULARIA; ANIMAL sexual behavior; QUANTITATIVE research; ZOOLOGICAL research
- Publication
Ciência Animal Brasileira, 2010, Vol 11, Issue 4, p817
- ISSN
1518-2797
- Publication type
Article
- DOI
10.5216/cab.v11i4.7642