MORPHOLOGICAL EVALUATION OF THE TESTICLES OF YOUNG SANTA INÊS RAMS SUBMITTED TO DIFFERENT REGIMES OF PROTEIN

Authors

  • Osmar Alves Carrijo Junior UnB
  • Carolina Madeira Lucci Faculdade de Agronomia e Medicina Veterinária, Universidade de Brasília, professora adjunta
  • Concepta McManus Faculdade de Agronomia e Medicina Veterinária, Universidade de Brasília, professora adjunta
  • Helder Louvandini Faculdade de Agronomia e Medicina Veterinária, Universidade de Brasília, professor adjunto
  • Rodrigo Duarte Martins Faculdade de Agronomia e Medicina Veterinária, Universidade de Brasília, estudante de graduação
  • Christiani Andrade Amorim Instituto de Ciências Biológicas, Universidade de Brasília, bolsista PRODOC

DOI:

https://doi.org/10.5216/cab.v9i2.1091

Abstract

The present study investigated the effect of protein supplementation and parasite load in relation to testicular morphology, in young Santa Inês male sheep. Twenty-four male lambs, non-castrated, were distributed in four treatments: HPd (dewormed animals + diet with high protein), HPn (animals non dewormed + diet with high protein), LPd (dewormed animals + diet with low protein), LPn (animals not dewormed + diet with low protein) during eight months. At the end of the experiment histological cuts of testicles were taken and cell count analyzed by computer and the program IMAGE PRO-PLUS was used for evaluation of measurements of the seminiferous tubules. The following results were found: LPn presented larger number of spermatogonias, but a reduced number of the other cells parameters (Sertoli cells, spermatocytes, spermatids and spermatozoa) and smaller diameter and circumference of the seminiferous tubules and shorter seminiferous epithelium when compared to other treatments. There was a significant correlation among tubules diameter of the epithelium height and tubules circumference. Correlations between lumen diameter and lumen circumference, as well as epithelium height and tubules circumference also presented high and positive correlations (r>0.70). When the external testis parameters were compared with internal parameters no significant correlation was observed (r<0.50). In conclusion, high protein supplementation positively influences spermatogenesis, and non-deworming associated with a poor protein diet worsens almost all reproductive parameters of young Santa Inês rams.

 

KEY WORDS: Morphology, nutrition, ovine, parasites, testicular morphometrics.

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Published

2008-07-09

How to Cite

CARRIJO JUNIOR, O. A.; LUCCI, C. M.; MCMANUS, C.; LOUVANDINI, H.; MARTINS, R. D.; AMORIM, C. A. MORPHOLOGICAL EVALUATION OF THE TESTICLES OF YOUNG SANTA INÊS RAMS SUBMITTED TO DIFFERENT REGIMES OF PROTEIN. Brazilian Animal Science/ Ciência Animal Brasileira, Goiânia, v. 9, n. 2, p. 433–441, 2008. DOI: 10.5216/cab.v9i2.1091. Disponível em: https://revistas.ufg.br/vet/article/view/1091. Acesso em: 17 jul. 2024.

Issue

Vol. 9 No. 2 (2008)

Section

Veterinary Medicine

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