Estimates of non-genetic effects and genetic parameters for semen traits in Piemontese bulls
Autor(a) principal: | |
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Data de Publicação: | 2021 |
Outros Autores: | , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1016/j.animal.2021.100302 http://hdl.handle.net/11449/221919 |
Resumo: | Male reproductive performances are often ignored in cattle breeding programmes, although semen traits might be used to improve bull breeding soundness. Effects of genetic and environmental factors on semen production and quality traits were estimated in 693 Piemontese bulls with the aim of providing the first estimates of genetic parameters for semen traits for this breed. Volume and concentrations of individual ejaculates (up to three per each test-day), and volume, concentration, total number of spermatozoa and post-thawing progressive motility of within test-day pooled semen were available for 19 060 ejaculates. Bulls reached the maximum amount of daily semen production after their third year of age, with concentration rapidly increasing until 23 months of age, and then slowly decreasing. Semen volume was at its highest when collection days were at least 15 days apart, whereas the maximum concentration was reached when the interval was 6 days. Heritability estimates were generally moderate (0.14–0.26), and low for progressive motility (0.08). Estimates of genetic correlation among the volumes of the individual ejaculates were high and positive (≥0.79), as were the genetic correlations among their concentrations (≥0.46). Genetic correlations among volume and concentration traits varied from −0.47 (with a 95% high posterior density interval ranging from −0.65 to −0.23) to −0.32 (with a 95% high posterior density interval ranging from −0.55 to −0.09). Progressive motility was unrelated with the other traits, but moderately positively correlated with volumes of the second and third ejaculates. The magnitude of heritabilities showed that selection for semen traits is possible. However, the unfavourable relationship between volume and concentration must be taken into account if a future selection programme is to be established. |
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Repositório Institucional da UNESP |
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Estimates of non-genetic effects and genetic parameters for semen traits in Piemontese bullsGenetic parametersMale fertilityMotilitySemen volumeSperm concentrationMale reproductive performances are often ignored in cattle breeding programmes, although semen traits might be used to improve bull breeding soundness. Effects of genetic and environmental factors on semen production and quality traits were estimated in 693 Piemontese bulls with the aim of providing the first estimates of genetic parameters for semen traits for this breed. Volume and concentrations of individual ejaculates (up to three per each test-day), and volume, concentration, total number of spermatozoa and post-thawing progressive motility of within test-day pooled semen were available for 19 060 ejaculates. Bulls reached the maximum amount of daily semen production after their third year of age, with concentration rapidly increasing until 23 months of age, and then slowly decreasing. Semen volume was at its highest when collection days were at least 15 days apart, whereas the maximum concentration was reached when the interval was 6 days. Heritability estimates were generally moderate (0.14–0.26), and low for progressive motility (0.08). Estimates of genetic correlation among the volumes of the individual ejaculates were high and positive (≥0.79), as were the genetic correlations among their concentrations (≥0.46). Genetic correlations among volume and concentration traits varied from −0.47 (with a 95% high posterior density interval ranging from −0.65 to −0.23) to −0.32 (with a 95% high posterior density interval ranging from −0.55 to −0.09). Progressive motility was unrelated with the other traits, but moderately positively correlated with volumes of the second and third ejaculates. The magnitude of heritabilities showed that selection for semen traits is possible. However, the unfavourable relationship between volume and concentration must be taken into account if a future selection programme is to be established.Department of Comparative Biomedicine and Food Science University of Padova, Viale dell'Università 16Faculdade de Ciências Agrárias e Veterinárias (FCAV) Universidade Estadual Paulista, Via de Acesso Prof. Paulo Donato Castellane s/nAssociazione Nazionale Allevatori Bovini di Razza Piemontese (Anaborapi), strada Trinità 32aFaculdade de Ciências Agrárias e Veterinárias (FCAV) Universidade Estadual Paulista, Via de Acesso Prof. Paulo Donato Castellane s/nUniversity of PadovaUniversidade Estadual Paulista (UNESP)Associazione Nazionale Allevatori Bovini di Razza Piemontese (Anaborapi)Rostellato, R.Bonfatti, V.Dias, V. A.D. [UNESP]Savoia, S.Spalenza, V.Albera, A.Carnier, P.2022-04-28T19:41:24Z2022-04-28T19:41:24Z2021-08-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.1016/j.animal.2021.100302Animal, v. 15, n. 8, 2021.1751-732X1751-7311http://hdl.handle.net/11449/22191910.1016/j.animal.2021.1003022-s2.0-85109443214Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengAnimalinfo:eu-repo/semantics/openAccess2022-04-28T19:41:24Zoai:repositorio.unesp.br:11449/221919Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T19:29:18.855886Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Estimates of non-genetic effects and genetic parameters for semen traits in Piemontese bulls |
title |
Estimates of non-genetic effects and genetic parameters for semen traits in Piemontese bulls |
spellingShingle |
Estimates of non-genetic effects and genetic parameters for semen traits in Piemontese bulls Rostellato, R. Genetic parameters Male fertility Motility Semen volume Sperm concentration |
title_short |
Estimates of non-genetic effects and genetic parameters for semen traits in Piemontese bulls |
title_full |
Estimates of non-genetic effects and genetic parameters for semen traits in Piemontese bulls |
title_fullStr |
Estimates of non-genetic effects and genetic parameters for semen traits in Piemontese bulls |
title_full_unstemmed |
Estimates of non-genetic effects and genetic parameters for semen traits in Piemontese bulls |
title_sort |
Estimates of non-genetic effects and genetic parameters for semen traits in Piemontese bulls |
author |
Rostellato, R. |
author_facet |
Rostellato, R. Bonfatti, V. Dias, V. A.D. [UNESP] Savoia, S. Spalenza, V. Albera, A. Carnier, P. |
author_role |
author |
author2 |
Bonfatti, V. Dias, V. A.D. [UNESP] Savoia, S. Spalenza, V. Albera, A. Carnier, P. |
author2_role |
author author author author author author |
dc.contributor.none.fl_str_mv |
University of Padova Universidade Estadual Paulista (UNESP) Associazione Nazionale Allevatori Bovini di Razza Piemontese (Anaborapi) |
dc.contributor.author.fl_str_mv |
Rostellato, R. Bonfatti, V. Dias, V. A.D. [UNESP] Savoia, S. Spalenza, V. Albera, A. Carnier, P. |
dc.subject.por.fl_str_mv |
Genetic parameters Male fertility Motility Semen volume Sperm concentration |
topic |
Genetic parameters Male fertility Motility Semen volume Sperm concentration |
description |
Male reproductive performances are often ignored in cattle breeding programmes, although semen traits might be used to improve bull breeding soundness. Effects of genetic and environmental factors on semen production and quality traits were estimated in 693 Piemontese bulls with the aim of providing the first estimates of genetic parameters for semen traits for this breed. Volume and concentrations of individual ejaculates (up to three per each test-day), and volume, concentration, total number of spermatozoa and post-thawing progressive motility of within test-day pooled semen were available for 19 060 ejaculates. Bulls reached the maximum amount of daily semen production after their third year of age, with concentration rapidly increasing until 23 months of age, and then slowly decreasing. Semen volume was at its highest when collection days were at least 15 days apart, whereas the maximum concentration was reached when the interval was 6 days. Heritability estimates were generally moderate (0.14–0.26), and low for progressive motility (0.08). Estimates of genetic correlation among the volumes of the individual ejaculates were high and positive (≥0.79), as were the genetic correlations among their concentrations (≥0.46). Genetic correlations among volume and concentration traits varied from −0.47 (with a 95% high posterior density interval ranging from −0.65 to −0.23) to −0.32 (with a 95% high posterior density interval ranging from −0.55 to −0.09). Progressive motility was unrelated with the other traits, but moderately positively correlated with volumes of the second and third ejaculates. The magnitude of heritabilities showed that selection for semen traits is possible. However, the unfavourable relationship between volume and concentration must be taken into account if a future selection programme is to be established. |
publishDate |
2021 |
dc.date.none.fl_str_mv |
2021-08-01 2022-04-28T19:41:24Z 2022-04-28T19:41:24Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1016/j.animal.2021.100302 Animal, v. 15, n. 8, 2021. 1751-732X 1751-7311 http://hdl.handle.net/11449/221919 10.1016/j.animal.2021.100302 2-s2.0-85109443214 |
url |
http://dx.doi.org/10.1016/j.animal.2021.100302 http://hdl.handle.net/11449/221919 |
identifier_str_mv |
Animal, v. 15, n. 8, 2021. 1751-732X 1751-7311 10.1016/j.animal.2021.100302 2-s2.0-85109443214 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Animal |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1808129076657913856 |