Reproductive characteristics of captive greater rhea (Rhea americana) males reared in the state of São Paulo, Brazil

Detalhes bibliográficos
Autor(a) principal: Góes,PAA
Data de Publicação: 2010
Outros Autores: Cavalcante,AK da S, Nichi,M, Perez,EG de A, Barnabe,RC, Barnabe,VH
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Brazilian Journal of Poultry Science (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2010000100009
Resumo: Rheas (Rhea americana) belongs to the ratite group. Considering the commercial significance of this birds, some techniques, such as semen collection, were standardized. In this study, 107 male rheas (3 to 4 years of age) reared in commercial farms in the state of São Paulo, Brazil, were used. Semen was collected during the breeding and off-breeding seasons of 2001, 2002, and 2003. Bird hierarchical behavior was observed. Birds were restrained performed using a box and a black hood. Semen was collected by digital pressure on the base of the phallus, which size was measured, and the presence or absence of spiral shape was observed. Immediately after collection, semen samples were evaluated for volume, motility, sperm concentration, and morphology. In a limited number of birds, blood samples were collected to measure testosterone levels. Among the 69 birds studied during the breeding season, 44 presented large phalluses, out of which 26 showed spiral shape. The method of semen collection was efficient. The following semen parameter results were obtained: volume (0.68 ±0.14 ml), motility (61.11±11.54%), sperm concentration (3.29±1.33 x10(9) sptz/ml), and number of spermatozoa per ejaculate (2.40±1.38x10(9) sptz/ml). Morphological abnormalities were analyzed and recorded. Testosterone levels were statistically different (p = 0.0161) between the breeding and non-breeding season (53.28±18.41 ng/ml and 5:57±3.81 ng/ml, respectively). Variations in phallus size were also found between the breeding and non-breeding seasons. Larger phalluses and higher testosterone levels were correlated with dominant behavior. The results of the present experiment confirmed that it is possible to collect semen from rheas, allowing the future use of biotechnologies such as artificial insemination.
id FACTA-1_e40f0525d784544a0604cae8e796cf2e
oai_identifier_str oai:scielo:S1516-635X2010000100009
network_acronym_str FACTA-1
network_name_str Brazilian Journal of Poultry Science (Online)
repository_id_str
spelling Reproductive characteristics of captive greater rhea (Rhea americana) males reared in the state of São Paulo, BrazilCaptive animalssemen collectionRheaRheas (Rhea americana) belongs to the ratite group. Considering the commercial significance of this birds, some techniques, such as semen collection, were standardized. In this study, 107 male rheas (3 to 4 years of age) reared in commercial farms in the state of São Paulo, Brazil, were used. Semen was collected during the breeding and off-breeding seasons of 2001, 2002, and 2003. Bird hierarchical behavior was observed. Birds were restrained performed using a box and a black hood. Semen was collected by digital pressure on the base of the phallus, which size was measured, and the presence or absence of spiral shape was observed. Immediately after collection, semen samples were evaluated for volume, motility, sperm concentration, and morphology. In a limited number of birds, blood samples were collected to measure testosterone levels. Among the 69 birds studied during the breeding season, 44 presented large phalluses, out of which 26 showed spiral shape. The method of semen collection was efficient. The following semen parameter results were obtained: volume (0.68 ±0.14 ml), motility (61.11±11.54%), sperm concentration (3.29±1.33 x10(9) sptz/ml), and number of spermatozoa per ejaculate (2.40±1.38x10(9) sptz/ml). Morphological abnormalities were analyzed and recorded. Testosterone levels were statistically different (p = 0.0161) between the breeding and non-breeding season (53.28±18.41 ng/ml and 5:57±3.81 ng/ml, respectively). Variations in phallus size were also found between the breeding and non-breeding seasons. Larger phalluses and higher testosterone levels were correlated with dominant behavior. The results of the present experiment confirmed that it is possible to collect semen from rheas, allowing the future use of biotechnologies such as artificial insemination.Fundacao de Apoio a Ciência e Tecnologia Avicolas2010-03-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2010000100009Brazilian Journal of Poultry Science v.12 n.1 2010reponame:Brazilian Journal of Poultry Science (Online)instname:Fundação APINCO de Ciência e Tecnologia Avícolas (FACTA)instacron:FACTA10.1590/S1516-635X2010000100009info:eu-repo/semantics/openAccessGóes,PAACavalcante,AK da SNichi,MPerez,EG de ABarnabe,RCBarnabe,VHeng2010-05-17T00:00:00Zoai:scielo:S1516-635X2010000100009Revistahttp://www.scielo.br/rbcahttps://old.scielo.br/oai/scielo-oai.php||rvfacta@terra.com.br1806-90611516-635Xopendoar:2010-05-17T00:00Brazilian Journal of Poultry Science (Online) - Fundação APINCO de Ciência e Tecnologia Avícolas (FACTA)false
dc.title.none.fl_str_mv Reproductive characteristics of captive greater rhea (Rhea americana) males reared in the state of São Paulo, Brazil
title Reproductive characteristics of captive greater rhea (Rhea americana) males reared in the state of São Paulo, Brazil
spellingShingle Reproductive characteristics of captive greater rhea (Rhea americana) males reared in the state of São Paulo, Brazil
Góes,PAA
Captive animals
semen collection
Rhea
title_short Reproductive characteristics of captive greater rhea (Rhea americana) males reared in the state of São Paulo, Brazil
title_full Reproductive characteristics of captive greater rhea (Rhea americana) males reared in the state of São Paulo, Brazil
title_fullStr Reproductive characteristics of captive greater rhea (Rhea americana) males reared in the state of São Paulo, Brazil
title_full_unstemmed Reproductive characteristics of captive greater rhea (Rhea americana) males reared in the state of São Paulo, Brazil
title_sort Reproductive characteristics of captive greater rhea (Rhea americana) males reared in the state of São Paulo, Brazil
author Góes,PAA
author_facet Góes,PAA
Cavalcante,AK da S
Nichi,M
Perez,EG de A
Barnabe,RC
Barnabe,VH
author_role author
author2 Cavalcante,AK da S
Nichi,M
Perez,EG de A
Barnabe,RC
Barnabe,VH
author2_role author
author
author
author
author
dc.contributor.author.fl_str_mv Góes,PAA
Cavalcante,AK da S
Nichi,M
Perez,EG de A
Barnabe,RC
Barnabe,VH
dc.subject.por.fl_str_mv Captive animals
semen collection
Rhea
topic Captive animals
semen collection
Rhea
description Rheas (Rhea americana) belongs to the ratite group. Considering the commercial significance of this birds, some techniques, such as semen collection, were standardized. In this study, 107 male rheas (3 to 4 years of age) reared in commercial farms in the state of São Paulo, Brazil, were used. Semen was collected during the breeding and off-breeding seasons of 2001, 2002, and 2003. Bird hierarchical behavior was observed. Birds were restrained performed using a box and a black hood. Semen was collected by digital pressure on the base of the phallus, which size was measured, and the presence or absence of spiral shape was observed. Immediately after collection, semen samples were evaluated for volume, motility, sperm concentration, and morphology. In a limited number of birds, blood samples were collected to measure testosterone levels. Among the 69 birds studied during the breeding season, 44 presented large phalluses, out of which 26 showed spiral shape. The method of semen collection was efficient. The following semen parameter results were obtained: volume (0.68 ±0.14 ml), motility (61.11±11.54%), sperm concentration (3.29±1.33 x10(9) sptz/ml), and number of spermatozoa per ejaculate (2.40±1.38x10(9) sptz/ml). Morphological abnormalities were analyzed and recorded. Testosterone levels were statistically different (p = 0.0161) between the breeding and non-breeding season (53.28±18.41 ng/ml and 5:57±3.81 ng/ml, respectively). Variations in phallus size were also found between the breeding and non-breeding seasons. Larger phalluses and higher testosterone levels were correlated with dominant behavior. The results of the present experiment confirmed that it is possible to collect semen from rheas, allowing the future use of biotechnologies such as artificial insemination.
publishDate 2010
dc.date.none.fl_str_mv 2010-03-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2010000100009
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2010000100009
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S1516-635X2010000100009
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Fundacao de Apoio a Ciência e Tecnologia Avicolas
publisher.none.fl_str_mv Fundacao de Apoio a Ciência e Tecnologia Avicolas
dc.source.none.fl_str_mv Brazilian Journal of Poultry Science v.12 n.1 2010
reponame:Brazilian Journal of Poultry Science (Online)
instname:Fundação APINCO de Ciência e Tecnologia Avícolas (FACTA)
instacron:FACTA
instname_str Fundação APINCO de Ciência e Tecnologia Avícolas (FACTA)
instacron_str FACTA
institution FACTA
reponame_str Brazilian Journal of Poultry Science (Online)
collection Brazilian Journal of Poultry Science (Online)
repository.name.fl_str_mv Brazilian Journal of Poultry Science (Online) - Fundação APINCO de Ciência e Tecnologia Avícolas (FACTA)
repository.mail.fl_str_mv ||rvfacta@terra.com.br
_version_ 1754122511787753472