Relationship between scrotal circumference and parameters of semen quality in male Guzerat Bulls from puberty to 36 months of age raised pasture in the savanah
The aim of this study was to investigate the association between the size of the scrotal circumference and physical characteristics of semen and sperm morphology, in 191 bulls of Guzerat breed. The bulls were divided by age in six groups from 12 to 36 months of age. Scrotal circumference and testicu...
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Universidad Pedagógica y Tecnológica de Colombia
2016
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| Online Access: | https://revistas.uptc.edu.co/index.php/ciencia_agricultura/article/view/5549 |
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| author | Pérez-Osorio, Jair Cardona-Álvarez, José Alberto Gómez-León, Víctor Enrique Otero-Arroyo, Rafael José |
| author_facet | Pérez-Osorio, Jair Cardona-Álvarez, José Alberto Gómez-León, Víctor Enrique Otero-Arroyo, Rafael José |
| author_sort | Pérez-Osorio, Jair |
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| description | The aim of this study was to investigate the association between the size of the scrotal circumference and physical characteristics of semen and sperm morphology, in 191 bulls of Guzerat breed. The bulls were divided by age in six groups from 12 to 36 months of age. Scrotal circumference and testicular measures were obtained by caliper and tape measure, according to the Brazilian College of Animal Reproduction' methodology. The animals with scrotal circumference 2 19cm, were subjected to semen collection using ejaculation by electro-stimulation. The evaluated semen characteristics were sperm motility and vigor, also assessments of sperm concentration and the presence of rounded cells. The correlation between scrotal circumference with sperm motility by age group, was positive (r = 0.94, P <0.005).The present study demonstrated that the presence of sperm with proximal cytoplasmic droplet, round cells in the ejaculation and defective sperm—head are the characteristics of objective assessment, which could be used for precocity selection of male sperm production. It can be concluded that the normality of sperm production in Guzerat breed, considering also all representative sperm production maturity process´ parameters, and the scrotal circumference above 30 cm, was reached over the age of 28 months. |
| format | Online |
| id | oai:oai.revistas.uptc.edu.co:article-5549 |
| institution | Revista Ciencia y Agricultura |
| language | spa |
| publishDate | 2016 |
| publisher | Universidad Pedagógica y Tecnológica de Colombia |
| record_format | ojs |
| spelling | oai:oai.revistas.uptc.edu.co:article-55492022-06-16T15:24:52Z Relationship between scrotal circumference and parameters of semen quality in male Guzerat Bulls from puberty to 36 months of age raised pasture in the savanah Relação entre o perímetro escrotal e parâmetros da qualidade do sêmen em machos da raça Guzerá, da puberdade até os 36 meses de idade Pérez-Osorio, Jair Cardona-Álvarez, José Alberto Gómez-León, Víctor Enrique Otero-Arroyo, Rafael José bulls guzerat scrotal circumference seminal traits spermatic morphology. características seminais Guzerá morfologia espermática touros The aim of this study was to investigate the association between the size of the scrotal circumference and physical characteristics of semen and sperm morphology, in 191 bulls of Guzerat breed. The bulls were divided by age in six groups from 12 to 36 months of age. Scrotal circumference and testicular measures were obtained by caliper and tape measure, according to the Brazilian College of Animal Reproduction' methodology. The animals with scrotal circumference 2 19cm, were subjected to semen collection using ejaculation by electro-stimulation. The evaluated semen characteristics were sperm motility and vigor, also assessments of sperm concentration and the presence of rounded cells. The correlation between scrotal circumference with sperm motility by age group, was positive (r = 0.94, P <0.005).The present study demonstrated that the presence of sperm with proximal cytoplasmic droplet, round cells in the ejaculation and defective sperm—head are the characteristics of objective assessment, which could be used for precocity selection of male sperm production. It can be concluded that the normality of sperm production in Guzerat breed, considering also all representative sperm production maturity process´ parameters, and the scrotal circumference above 30 cm, was reached over the age of 28 months. O objetivo deste estudo foi verificar a associação entre o tamanho do perímetro escrotal e as características físicas e morfológicas dos ejaculados em 191 touros da raça guzerá. Os touros foram divididos por faixas etárias dos 12 aos 36 meses de idade. As mensurações de perímetro escrotal e medidas testiculares foram obtidas com ajuda de paquímetro e fita métrica de acordo à metodologia do Colégio Brasileiro de Reprodução Animal. Os animais que apresentaram perímetro escrotal ≥ 19 cm foram submetidos à coleta de sêmen utilizando-se estímulo eletro-ejaculatório. Foram avaliadas as características espermáticas dos ejaculados como motilidade, vigor e também realizadas avaliações de concentração espermática e a presença de células arredondadas. A correlação do perímetro escrotal com a motilidade espermática por faixa etária foi positiva r=0.94; (P<0, 005). Neste estudo foi observado que a presenças de espermatozoides com gota citoplasmática proximal, células arredondadas no ejaculado e defeitos de cabeça dos espermatozoides são as características de avaliação objetiva que mais poderiam ser utilizados para seleção de precocidade da produção espermática em machos bovinos. Pode ser concluído que a normalidade da produção espermática na raça Guzerá considerando conjuntamente todos os parâmetros representativos de maturidade do processo da produção espermática foi atingida com idade acima de 28 meses e perímetro escrotal acima de 30 cm. Universidad Pedagógica y Tecnológica de Colombia 2016-11-05 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion investigation investigación application/pdf https://revistas.uptc.edu.co/index.php/ciencia_agricultura/article/view/5549 10.19053/01228420.v13.n2.2016.5549 Ciencia y Agricultura; Vol. 13 No. 2 (2016); 29-38 Ciencia y Agricultura; Vol. 13 Núm. 2 (2016); 29-38 2539-0899 spa https://revistas.uptc.edu.co/index.php/ciencia_agricultura/article/view/5549/4582 Copyright (c) 2016 Revista Ciencia y Agricultura |
| spellingShingle | bulls guzerat scrotal circumference seminal traits spermatic morphology. características seminais Guzerá morfologia espermática touros Pérez-Osorio, Jair Cardona-Álvarez, José Alberto Gómez-León, Víctor Enrique Otero-Arroyo, Rafael José Relationship between scrotal circumference and parameters of semen quality in male Guzerat Bulls from puberty to 36 months of age raised pasture in the savanah |
| title | Relationship between scrotal circumference and parameters of semen quality in male Guzerat Bulls from puberty to 36 months of age raised pasture in the savanah |
| title_alt | Relação entre o perímetro escrotal e parâmetros da qualidade do sêmen em machos da raça Guzerá, da puberdade até os 36 meses de idade |
| title_full | Relationship between scrotal circumference and parameters of semen quality in male Guzerat Bulls from puberty to 36 months of age raised pasture in the savanah |
| title_fullStr | Relationship between scrotal circumference and parameters of semen quality in male Guzerat Bulls from puberty to 36 months of age raised pasture in the savanah |
| title_full_unstemmed | Relationship between scrotal circumference and parameters of semen quality in male Guzerat Bulls from puberty to 36 months of age raised pasture in the savanah |
| title_short | Relationship between scrotal circumference and parameters of semen quality in male Guzerat Bulls from puberty to 36 months of age raised pasture in the savanah |
| title_sort | relationship between scrotal circumference and parameters of semen quality in male guzerat bulls from puberty to 36 months of age raised pasture in the savanah |
| topic | bulls guzerat scrotal circumference seminal traits spermatic morphology. características seminais Guzerá morfologia espermática touros |
| topic_facet | bulls guzerat scrotal circumference seminal traits spermatic morphology. características seminais Guzerá morfologia espermática touros |
| url | https://revistas.uptc.edu.co/index.php/ciencia_agricultura/article/view/5549 |
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