In vitro performance and in vivo fertility of antibiotic-free preserved boar semen stored at 5 °C
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 UFRGS |
Texto Completo: | http://hdl.handle.net/10183/220853 |
Resumo: | Background: Hypothermic preservation of boar semen is considered a potential method for omitting antibiotics from insemination doses, thereby contributing to the global antibiotic resistance defence strategy. The main challenges are chilling injury to spermatozoa and bacterial growth during semen storage leading to reduced fertility. Objectives: To examine chilling injury and the number and type of bacteria in boar semen stored at 5 °C in the absence of antibiotics, and to assess the applicability of hypothermic semen storage under field conditions. Material and methods: Boar ejaculates were extended with AndroStar® Premium, stored at 17 °C with and at 5 °C without antibiotics and tested for functional sperm parameters by flow cytometry. Raw semen and extended samples were investigated bacteriologically. Fertility was evaluated after once-daily inseminations of 194 sows in a field study. Results: Lethal sperm damage assessed by motility and membrane integrity was low throughout storage in both experimental groups. Sublethal chilling effects based on the decrease of viable spermatozoa with low membrane fluidity were higher (P < 0.05) up until 72 h in sperm stored at 5 °C compared to 17 °C but did not differ after 144 h. After 72 h, incubation in capacitating medium for 60 min induced a similar decrease in viable sperm with high mitochondria membrane potential and low cytosolic calcium in both groups. In semen stored at 5 °C, bacteria counts were below 103 CFU/mL and the bacteria spectrum was similar to that of raw semen. In 88% of 34 boars, cooled semen fulfilled the requirements for insemination. Fertility was high and did not differ (P > 0.05) between sow groups inseminated with semen stored antibiotic-free at 5 °C and semen stored at 17 °C with antibiotics. Conclusion: Despite subtle chilling effects and low bacterial numbers, antibiotic-free hypothermic storage of boar semen offers the possibility to reduce the use of antibiotics in pig insemination. However, strict sanitary guidelines must be maintained and further evidence of efficiency under field conditions is considered desirable. |
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Jäkel, HelenScheinpflug, KathiMühldorfer, KristinGianluppi, Rafael Dal FornoLucca, Matheus SchardongMellagi, Ana Paula GonçalvesBortolozzo, Fernando PandolfoWaberski, Dagmar2021-05-13T04:26:59Z20212049-1891http://hdl.handle.net/10183/220853001123139Background: Hypothermic preservation of boar semen is considered a potential method for omitting antibiotics from insemination doses, thereby contributing to the global antibiotic resistance defence strategy. The main challenges are chilling injury to spermatozoa and bacterial growth during semen storage leading to reduced fertility. Objectives: To examine chilling injury and the number and type of bacteria in boar semen stored at 5 °C in the absence of antibiotics, and to assess the applicability of hypothermic semen storage under field conditions. Material and methods: Boar ejaculates were extended with AndroStar® Premium, stored at 17 °C with and at 5 °C without antibiotics and tested for functional sperm parameters by flow cytometry. Raw semen and extended samples were investigated bacteriologically. Fertility was evaluated after once-daily inseminations of 194 sows in a field study. Results: Lethal sperm damage assessed by motility and membrane integrity was low throughout storage in both experimental groups. Sublethal chilling effects based on the decrease of viable spermatozoa with low membrane fluidity were higher (P < 0.05) up until 72 h in sperm stored at 5 °C compared to 17 °C but did not differ after 144 h. After 72 h, incubation in capacitating medium for 60 min induced a similar decrease in viable sperm with high mitochondria membrane potential and low cytosolic calcium in both groups. In semen stored at 5 °C, bacteria counts were below 103 CFU/mL and the bacteria spectrum was similar to that of raw semen. In 88% of 34 boars, cooled semen fulfilled the requirements for insemination. Fertility was high and did not differ (P > 0.05) between sow groups inseminated with semen stored antibiotic-free at 5 °C and semen stored at 17 °C with antibiotics. Conclusion: Despite subtle chilling effects and low bacterial numbers, antibiotic-free hypothermic storage of boar semen offers the possibility to reduce the use of antibiotics in pig insemination. However, strict sanitary guidelines must be maintained and further evidence of efficiency under field conditions is considered desirable.application/pdfengJournal of Animal Science and Biotechnology. London. Vol. 12 (2021), 9, 12 p.Preservação do sêmenEsfriamentoAntibióticosLesão por frioFertilidade animalCrescimento bacterianoSuínosAntibioticsBacteriaBoar semenChillingFertilitySemen preservationIn vitro performance and in vivo fertility of antibiotic-free preserved boar semen stored at 5 °CEstrangeiroinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFRGSinstname:Universidade Federal do Rio Grande do Sul (UFRGS)instacron:UFRGSTEXT001123139.pdf.txt001123139.pdf.txtExtracted Texttext/plain57601http://www.lume.ufrgs.br/bitstream/10183/220853/2/001123139.pdf.txt55ebf8afa19ff91bc7bb461cfd6e9d5dMD52ORIGINAL001123139.pdfTexto completo (inglês)application/pdf1124617http://www.lume.ufrgs.br/bitstream/10183/220853/1/001123139.pdf52d0f408a3a35f96af249711e50b7c04MD5110183/2208532021-05-26 04:41:45.470982oai:www.lume.ufrgs.br:10183/220853Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2021-05-26T07:41:45Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false |
dc.title.pt_BR.fl_str_mv |
In vitro performance and in vivo fertility of antibiotic-free preserved boar semen stored at 5 °C |
title |
In vitro performance and in vivo fertility of antibiotic-free preserved boar semen stored at 5 °C |
spellingShingle |
In vitro performance and in vivo fertility of antibiotic-free preserved boar semen stored at 5 °C Jäkel, Helen Preservação do sêmen Esfriamento Antibióticos Lesão por frio Fertilidade animal Crescimento bacteriano Suínos Antibiotics Bacteria Boar semen Chilling Fertility Semen preservation |
title_short |
In vitro performance and in vivo fertility of antibiotic-free preserved boar semen stored at 5 °C |
title_full |
In vitro performance and in vivo fertility of antibiotic-free preserved boar semen stored at 5 °C |
title_fullStr |
In vitro performance and in vivo fertility of antibiotic-free preserved boar semen stored at 5 °C |
title_full_unstemmed |
In vitro performance and in vivo fertility of antibiotic-free preserved boar semen stored at 5 °C |
title_sort |
In vitro performance and in vivo fertility of antibiotic-free preserved boar semen stored at 5 °C |
author |
Jäkel, Helen |
author_facet |
Jäkel, Helen Scheinpflug, Kathi Mühldorfer, Kristin Gianluppi, Rafael Dal Forno Lucca, Matheus Schardong Mellagi, Ana Paula Gonçalves Bortolozzo, Fernando Pandolfo Waberski, Dagmar |
author_role |
author |
author2 |
Scheinpflug, Kathi Mühldorfer, Kristin Gianluppi, Rafael Dal Forno Lucca, Matheus Schardong Mellagi, Ana Paula Gonçalves Bortolozzo, Fernando Pandolfo Waberski, Dagmar |
author2_role |
author author author author author author author |
dc.contributor.author.fl_str_mv |
Jäkel, Helen Scheinpflug, Kathi Mühldorfer, Kristin Gianluppi, Rafael Dal Forno Lucca, Matheus Schardong Mellagi, Ana Paula Gonçalves Bortolozzo, Fernando Pandolfo Waberski, Dagmar |
dc.subject.por.fl_str_mv |
Preservação do sêmen Esfriamento Antibióticos Lesão por frio Fertilidade animal Crescimento bacteriano Suínos |
topic |
Preservação do sêmen Esfriamento Antibióticos Lesão por frio Fertilidade animal Crescimento bacteriano Suínos Antibiotics Bacteria Boar semen Chilling Fertility Semen preservation |
dc.subject.eng.fl_str_mv |
Antibiotics Bacteria Boar semen Chilling Fertility Semen preservation |
description |
Background: Hypothermic preservation of boar semen is considered a potential method for omitting antibiotics from insemination doses, thereby contributing to the global antibiotic resistance defence strategy. The main challenges are chilling injury to spermatozoa and bacterial growth during semen storage leading to reduced fertility. Objectives: To examine chilling injury and the number and type of bacteria in boar semen stored at 5 °C in the absence of antibiotics, and to assess the applicability of hypothermic semen storage under field conditions. Material and methods: Boar ejaculates were extended with AndroStar® Premium, stored at 17 °C with and at 5 °C without antibiotics and tested for functional sperm parameters by flow cytometry. Raw semen and extended samples were investigated bacteriologically. Fertility was evaluated after once-daily inseminations of 194 sows in a field study. Results: Lethal sperm damage assessed by motility and membrane integrity was low throughout storage in both experimental groups. Sublethal chilling effects based on the decrease of viable spermatozoa with low membrane fluidity were higher (P < 0.05) up until 72 h in sperm stored at 5 °C compared to 17 °C but did not differ after 144 h. After 72 h, incubation in capacitating medium for 60 min induced a similar decrease in viable sperm with high mitochondria membrane potential and low cytosolic calcium in both groups. In semen stored at 5 °C, bacteria counts were below 103 CFU/mL and the bacteria spectrum was similar to that of raw semen. In 88% of 34 boars, cooled semen fulfilled the requirements for insemination. Fertility was high and did not differ (P > 0.05) between sow groups inseminated with semen stored antibiotic-free at 5 °C and semen stored at 17 °C with antibiotics. Conclusion: Despite subtle chilling effects and low bacterial numbers, antibiotic-free hypothermic storage of boar semen offers the possibility to reduce the use of antibiotics in pig insemination. However, strict sanitary guidelines must be maintained and further evidence of efficiency under field conditions is considered desirable. |
publishDate |
2021 |
dc.date.accessioned.fl_str_mv |
2021-05-13T04:26:59Z |
dc.date.issued.fl_str_mv |
2021 |
dc.type.driver.fl_str_mv |
Estrangeiro 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://hdl.handle.net/10183/220853 |
dc.identifier.issn.pt_BR.fl_str_mv |
2049-1891 |
dc.identifier.nrb.pt_BR.fl_str_mv |
001123139 |
identifier_str_mv |
2049-1891 001123139 |
url |
http://hdl.handle.net/10183/220853 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.ispartof.pt_BR.fl_str_mv |
Journal of Animal Science and Biotechnology. London. Vol. 12 (2021), 9, 12 p. |
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info:eu-repo/semantics/openAccess |
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openAccess |
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