Seasonal variation in the reproductive activity of male goats raised under tropical climate conditions
ABSTRACT This study analyzed seasonal variations in the testes, the concentration of sex hormones, the parameters of fresh and thawed semen, and the sexual behavior of male Alpine goats from a temperate region in a tropical climate and possible interference with fertility. The maximum and minimum te...
Main Authors: | , , , , , , , |
---|---|
Format: | Article |
Language: | English |
Published: |
Sociedade Brasileira de Zootecnia
|
Series: | Revista Brasileira de Zootecnia |
Subjects: | |
Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982017000300192&lng=en&tlng=en |
id |
doaj-c43383ed4dd940d096c1aaa8b0c25d9a |
---|---|
record_format |
Article |
spelling |
doaj-c43383ed4dd940d096c1aaa8b0c25d9a2020-11-24T23:22:32ZengSociedade Brasileira de ZootecniaRevista Brasileira de Zootecnia1806-929046319220110.1590/s1806-92902017000300003S1516-35982017000300192Seasonal variation in the reproductive activity of male goats raised under tropical climate conditionsJúlio César Oliveira DiasCristina Mattos VelosoMadriano Christilis da Rocha SantosCarlos Thiago Silveira Alvim Mendes de OliveiraCamila Oliveira SilveiraErick IglesiasPaula Piccolo MaitanLetícia Maria Pereira SanglardABSTRACT This study analyzed seasonal variations in the testes, the concentration of sex hormones, the parameters of fresh and thawed semen, and the sexual behavior of male Alpine goats from a temperate region in a tropical climate and possible interference with fertility. The maximum and minimum temperature and luminosity were recorded daily, while seminal, hormonal, and behavioral assessments were carried out every fortnight. The maximum and minimum temperature (°C) and luminosity (h) were recorded daily always at 17.00 h. The scrotal circumference (cm), testicular volume (mL), volume (mL), appearance (creamy, milky, aqueous) and coloration (white, white-yellowish, and yellowish) seminal, turbulence or mass movement (0 to 5), progressive spermatic motility (0 to 100%), spermatic force (0 to 5), concentration (spermatozoids/mL), spermatic pathologies, hypoosmotic test (%), serum levels of FSH (mUI/mL), LH (mUI/mL), testosterone (ng/mL), and sexual behaviors were carried out every fortnight. There was a difference between the scrotal circumference evaluated monthly, testicular volume, volume and concentration of fresh semen, sperm vigor of the thawed semen, serum levels of testosterone, FSH and LH, and some sexual behaviors. Thus, the changes that occur in the quantity and quality of sperm, in the hormonal profile, and in sexual behaviors should not be regarded as an impediment to the use of male Alpine goats in tropical climates throughout the year. These variations do not lead to changes in the semen that may compromise the fertility of these animals.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982017000300192&lng=en&tlng=engonadotropinssemen qualitysexual behaviortestosterone |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Júlio César Oliveira Dias Cristina Mattos Veloso Madriano Christilis da Rocha Santos Carlos Thiago Silveira Alvim Mendes de Oliveira Camila Oliveira Silveira Erick Iglesias Paula Piccolo Maitan Letícia Maria Pereira Sanglard |
spellingShingle |
Júlio César Oliveira Dias Cristina Mattos Veloso Madriano Christilis da Rocha Santos Carlos Thiago Silveira Alvim Mendes de Oliveira Camila Oliveira Silveira Erick Iglesias Paula Piccolo Maitan Letícia Maria Pereira Sanglard Seasonal variation in the reproductive activity of male goats raised under tropical climate conditions Revista Brasileira de Zootecnia gonadotropins semen quality sexual behavior testosterone |
author_facet |
Júlio César Oliveira Dias Cristina Mattos Veloso Madriano Christilis da Rocha Santos Carlos Thiago Silveira Alvim Mendes de Oliveira Camila Oliveira Silveira Erick Iglesias Paula Piccolo Maitan Letícia Maria Pereira Sanglard |
author_sort |
Júlio César Oliveira Dias |
title |
Seasonal variation in the reproductive activity of male goats raised under tropical climate conditions |
title_short |
Seasonal variation in the reproductive activity of male goats raised under tropical climate conditions |
title_full |
Seasonal variation in the reproductive activity of male goats raised under tropical climate conditions |
title_fullStr |
Seasonal variation in the reproductive activity of male goats raised under tropical climate conditions |
title_full_unstemmed |
Seasonal variation in the reproductive activity of male goats raised under tropical climate conditions |
title_sort |
seasonal variation in the reproductive activity of male goats raised under tropical climate conditions |
publisher |
Sociedade Brasileira de Zootecnia |
series |
Revista Brasileira de Zootecnia |
issn |
1806-9290 |
description |
ABSTRACT This study analyzed seasonal variations in the testes, the concentration of sex hormones, the parameters of fresh and thawed semen, and the sexual behavior of male Alpine goats from a temperate region in a tropical climate and possible interference with fertility. The maximum and minimum temperature and luminosity were recorded daily, while seminal, hormonal, and behavioral assessments were carried out every fortnight. The maximum and minimum temperature (°C) and luminosity (h) were recorded daily always at 17.00 h. The scrotal circumference (cm), testicular volume (mL), volume (mL), appearance (creamy, milky, aqueous) and coloration (white, white-yellowish, and yellowish) seminal, turbulence or mass movement (0 to 5), progressive spermatic motility (0 to 100%), spermatic force (0 to 5), concentration (spermatozoids/mL), spermatic pathologies, hypoosmotic test (%), serum levels of FSH (mUI/mL), LH (mUI/mL), testosterone (ng/mL), and sexual behaviors were carried out every fortnight. There was a difference between the scrotal circumference evaluated monthly, testicular volume, volume and concentration of fresh semen, sperm vigor of the thawed semen, serum levels of testosterone, FSH and LH, and some sexual behaviors. Thus, the changes that occur in the quantity and quality of sperm, in the hormonal profile, and in sexual behaviors should not be regarded as an impediment to the use of male Alpine goats in tropical climates throughout the year. These variations do not lead to changes in the semen that may compromise the fertility of these animals. |
topic |
gonadotropins semen quality sexual behavior testosterone |
url |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982017000300192&lng=en&tlng=en |
work_keys_str_mv |
AT juliocesaroliveiradias seasonalvariationinthereproductiveactivityofmalegoatsraisedundertropicalclimateconditions AT cristinamattosveloso seasonalvariationinthereproductiveactivityofmalegoatsraisedundertropicalclimateconditions AT madrianochristilisdarochasantos seasonalvariationinthereproductiveactivityofmalegoatsraisedundertropicalclimateconditions AT carlosthiagosilveiraalvimmendesdeoliveira seasonalvariationinthereproductiveactivityofmalegoatsraisedundertropicalclimateconditions AT camilaoliveirasilveira seasonalvariationinthereproductiveactivityofmalegoatsraisedundertropicalclimateconditions AT erickiglesias seasonalvariationinthereproductiveactivityofmalegoatsraisedundertropicalclimateconditions AT paulapiccolomaitan seasonalvariationinthereproductiveactivityofmalegoatsraisedundertropicalclimateconditions AT leticiamariapereirasanglard seasonalvariationinthereproductiveactivityofmalegoatsraisedundertropicalclimateconditions |
_version_ |
1725567660562841600 |