Testicular Histomorphometric Evaluation of Zebu Bull Breeds
The objective of this study was to evaluate the quantitative histology and testicular biometrics in zebu bulls of different breeds. Testicular fragments of Nelore (n=10), Polled Nelore (n=6), Gir (n=5), Guzerat (n=5) and Tabapuã bulls (n=5) were used. The fragments were perfusion-fixed in Karnovsky...
Main Authors: | , , , , , |
---|---|
Format: | Article |
Language: | English |
Published: |
Instituto de Tecnologia do Paraná (Tecpar)
2014-12-01
|
Series: | Brazilian Archives of Biology and Technology |
Subjects: | |
Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132014000600900&lng=en&tlng=en |
id |
doaj-0dd8835d891842e4bf7de05d71ddbd24 |
---|---|
record_format |
Article |
spelling |
doaj-0dd8835d891842e4bf7de05d71ddbd242020-11-25T00:33:00ZengInstituto de Tecnologia do Paraná (Tecpar)Brazilian Archives of Biology and Technology1678-43242014-12-0157690090710.1590/S1516-8913201402262S1516-89132014000600900Testicular Histomorphometric Evaluation of Zebu Bull BreedsPaulo Antônio Terrabuio AndreussiDeiler Sampaio CostaFábio José Carvalho FariaCarlos Antônio Carvalho FernandesMarcelo Diniz SantosJuliana Correa Borges SilvaThe objective of this study was to evaluate the quantitative histology and testicular biometrics in zebu bulls of different breeds. Testicular fragments of Nelore (n=10), Polled Nelore (n=6), Gir (n=5), Guzerat (n=5) and Tabapuã bulls (n=5) were used. The fragments were perfusion-fixed in Karnovsky solution, embedded in glycol methacrylate and stained with toluidine blue-1% sodium borate. The Nelore animals had a higher tubular volumetric proportion (85.2%) and greater height of the seminiferous epithelium (73.2 µm) than the Gir, Guzerat and Tabapuã breeds. The Nelore animals also had a higher volumetric proportion of Leydig cells (5.2%) than the Guzerat and Tabapuã breeds. There was no significant difference for any of these parameters between the Nelore and Polled Nelore breeds. The gonadosomatic index, seminiferous tubule diameter, cross-sectional area of the seminiferous tubule and tubule length (total length and length per gram of testicular parenchyma) did not vary among the breeds studied. The morphometric parameters evaluated suggested that the genetic selection applied to the Nelore and Polled Nelore breeds improved the efficiency of spermatogenesis in these breeders.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132014000600900&lng=en&tlng=encattletestisvolumetric proportionseminiferous tubule |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Paulo Antônio Terrabuio Andreussi Deiler Sampaio Costa Fábio José Carvalho Faria Carlos Antônio Carvalho Fernandes Marcelo Diniz Santos Juliana Correa Borges Silva |
spellingShingle |
Paulo Antônio Terrabuio Andreussi Deiler Sampaio Costa Fábio José Carvalho Faria Carlos Antônio Carvalho Fernandes Marcelo Diniz Santos Juliana Correa Borges Silva Testicular Histomorphometric Evaluation of Zebu Bull Breeds Brazilian Archives of Biology and Technology cattle testis volumetric proportion seminiferous tubule |
author_facet |
Paulo Antônio Terrabuio Andreussi Deiler Sampaio Costa Fábio José Carvalho Faria Carlos Antônio Carvalho Fernandes Marcelo Diniz Santos Juliana Correa Borges Silva |
author_sort |
Paulo Antônio Terrabuio Andreussi |
title |
Testicular Histomorphometric Evaluation of Zebu Bull Breeds |
title_short |
Testicular Histomorphometric Evaluation of Zebu Bull Breeds |
title_full |
Testicular Histomorphometric Evaluation of Zebu Bull Breeds |
title_fullStr |
Testicular Histomorphometric Evaluation of Zebu Bull Breeds |
title_full_unstemmed |
Testicular Histomorphometric Evaluation of Zebu Bull Breeds |
title_sort |
testicular histomorphometric evaluation of zebu bull breeds |
publisher |
Instituto de Tecnologia do Paraná (Tecpar) |
series |
Brazilian Archives of Biology and Technology |
issn |
1678-4324 |
publishDate |
2014-12-01 |
description |
The objective of this study was to evaluate the quantitative histology and testicular biometrics in zebu bulls of different breeds. Testicular fragments of Nelore (n=10), Polled Nelore (n=6), Gir (n=5), Guzerat (n=5) and Tabapuã bulls (n=5) were used. The fragments were perfusion-fixed in Karnovsky solution, embedded in glycol methacrylate and stained with toluidine blue-1% sodium borate. The Nelore animals had a higher tubular volumetric proportion (85.2%) and greater height of the seminiferous epithelium (73.2 µm) than the Gir, Guzerat and Tabapuã breeds. The Nelore animals also had a higher volumetric proportion of Leydig cells (5.2%) than the Guzerat and Tabapuã breeds. There was no significant difference for any of these parameters between the Nelore and Polled Nelore breeds. The gonadosomatic index, seminiferous tubule diameter, cross-sectional area of the seminiferous tubule and tubule length (total length and length per gram of testicular parenchyma) did not vary among the breeds studied. The morphometric parameters evaluated suggested that the genetic selection applied to the Nelore and Polled Nelore breeds improved the efficiency of spermatogenesis in these breeders. |
topic |
cattle testis volumetric proportion seminiferous tubule |
url |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132014000600900&lng=en&tlng=en |
work_keys_str_mv |
AT pauloantonioterrabuioandreussi testicularhistomorphometricevaluationofzebubullbreeds AT deilersampaiocosta testicularhistomorphometricevaluationofzebubullbreeds AT fabiojosecarvalhofaria testicularhistomorphometricevaluationofzebubullbreeds AT carlosantoniocarvalhofernandes testicularhistomorphometricevaluationofzebubullbreeds AT marcelodinizsantos testicularhistomorphometricevaluationofzebubullbreeds AT julianacorreaborgessilva testicularhistomorphometricevaluationofzebubullbreeds |
_version_ |
1725317809381048320 |