Characterization of Boar Studs in Brazil

Understanding the flow of processes in swine production systems and how they work is fundamental to improving reproductive performance. We surveyed 32 boar studs in Brazil, representing 61.53% of the total in the country. Commercial lines were the most common breed (59.38%) used in the studs. Indivi...

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Published inCiência rural Vol. 50; no. 11
Main Authors Bennemann, Paulo Eduardo, Bragança, José Francisco Manta, Walter, Marina Patricia, Bottan, Juliano, Machado, Sérgio Abreu
Format Journal Article
LanguageEnglish
Published Santa Maria Universidade Federal de Santa Maria Centro de Ciencias Rurais 2020
Universidade Federal de Santa Maria
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Abstract Understanding the flow of processes in swine production systems and how they work is fundamental to improving reproductive performance. We surveyed 32 boar studs in Brazil, representing 61.53% of the total in the country. Commercial lines were the most common breed (59.38%) used in the studs. Individual pens and stalls were the most commonly used as housing system (71.9%), and 81.25% of the studs reported having some form of thermal control system. For most of the studs (62.51%), average weekly sperm concentration was higher than 200 million cells per mL. Also, for most studs (71.88%) average weekly ejaculate volume was more than 250 mL. In 46.88% of the studs each ejaculate yielded 26 to 40 semen doses. In 6.25% of the studs, 3.5 billion sperm cells per dose were used for artificial, intracervical insemination. Sperm concentration in 46.88% of the studs was determined using a computer-assisted system analysis. The assessment of sperm quality was conducted using morphology, concentration, and microbiological testing. Employees working on semen collection had formal education of elementary/middle school (34.38%) and high school (37.5%). Most of the laboratory technicians had frequented high school (75%). The most time-consuming task was semen processing, taking 16 to 25 h a week (46.8%) and 6 to 10 h was allotted for the cleaning of stud facilities (46.8%). The data collected in the present study allow greater knowledge of this important part in the pig production chain in Brazil. RESUMO: O entendimento dos processos na suinocultura e como estes funcionam é fundamental para o incremento da performance reprodutiva. Por via eletrônica, foi realizada uma investigação com 32 centrais de coleta e processamento de sêmen no Brasil, representando 61,53% do total no país. O número médio de reprodutores por central foi de 122. Reprodutores da linhagem comercial foram os mais frequentemente (59,38%) utilizados nas centrais. As baias para alojamento individual dos reprodutores foram as mais comuns (71,9%) e 81,25% das centrais relataram possuir algum sistema de climatização. Na maioria das centrais (62,51%), a média da concentração espermática foi maior que 200 milhões de espermatozoides/mL. Da mesma forma, a maioria das centrais (71,88%) apresentaram um volume do ejaculado superior a 250 mL. Em 46,88% das centrais um ejaculado produziu de 26 a 40 doses inseminantes. Em 6,25% das centrais eram utilizadas uma concentração de 3,5 bilhões de espermatozoides por dose inseminante na inseminação intracervical. A concentração espermática em 46,88% das centrais era determinada através do sistema CASA. A avaliação da qualidade espermática era realizada através da análise de morfologia, concentração e exame microbiológico das doses inseminantes. Os colaboradores envolvidos com a coleta de sêmen tinham nível de instrução fundamental (43,38%) e médio (37,5%). A maioria dos técnicos no laboratório das centrais tinham ensino médio (75%). A atividade que mais consumia tempo foi o processamento do sêmen, com 16 a 25 horas/semana (46,8%) e 6 a 10 horas era utilizada na limpeza das instalações (46,8%). Os dados coletados no presente estudo permitem um maior conhecimento desse elo da cadeia produtiva da suinocultura no Brasil.
AbstractList Understanding the flow of processes in swine production systems and how they work is fundamental to improving reproductive performance. We surveyed 32 boar studs in Brazil, representing 61.53% of the total in the country. Commercial lines were the most common breed (59.38%) used in the studs. Individual pens and stalls were the most commonly used as housing system (71.9%), and 81.25% of the studs reported having some form of thermal control system. For most of the studs (62.51%), average weekly sperm concentration was higher than 200 million cells per mL. Also, for most studs (71.88%) average weekly ejaculate volume was more than 250 mL. In 46.88% of the studs each ejaculate yielded 26 to 40 semen doses. In 6.25% of the studs, 3.5 billion sperm cells per dose were used for artificial, intracervical insemination. Sperm concentration in 46.88% of the studs was determined using a computer-assisted system analysis. The assessment of sperm quality was conducted using morphology, concentration, and microbiological testing. Employees working on semen collection had formal education of elementary/middle school (34.38%) and high school (37.5%). Most of the laboratory technicians had frequented high school (75%). The most time-consuming task was semen processing, taking 16 to 25 h a week (46.8%) and 6 to 10 h was allotted for the cleaning of stud facilities (46.8%). The data collected in the present study allow greater knowledge of this important part in the pig production chain in Brazil. RESUMO: O entendimento dos processos na suinocultura e como estes funcionam é fundamental para o incremento da performance reprodutiva. Por via eletrônica, foi realizada uma investigação com 32 centrais de coleta e processamento de sêmen no Brasil, representando 61,53% do total no país. O número médio de reprodutores por central foi de 122. Reprodutores da linhagem comercial foram os mais frequentemente (59,38%) utilizados nas centrais. As baias para alojamento individual dos reprodutores foram as mais comuns (71,9%) e 81,25% das centrais relataram possuir algum sistema de climatização. Na maioria das centrais (62,51%), a média da concentração espermática foi maior que 200 milhões de espermatozoides/mL. Da mesma forma, a maioria das centrais (71,88%) apresentaram um volume do ejaculado superior a 250 mL. Em 46,88% das centrais um ejaculado produziu de 26 a 40 doses inseminantes. Em 6,25% das centrais eram utilizadas uma concentração de 3,5 bilhões de espermatozoides por dose inseminante na inseminação intracervical. A concentração espermática em 46,88% das centrais era determinada através do sistema CASA. A avaliação da qualidade espermática era realizada através da análise de morfologia, concentração e exame microbiológico das doses inseminantes. Os colaboradores envolvidos com a coleta de sêmen tinham nível de instrução fundamental (43,38%) e médio (37,5%). A maioria dos técnicos no laboratório das centrais tinham ensino médio (75%). A atividade que mais consumia tempo foi o processamento do sêmen, com 16 a 25 horas/semana (46,8%) e 6 a 10 horas era utilizada na limpeza das instalações (46,8%). Os dados coletados no presente estudo permitem um maior conhecimento desse elo da cadeia produtiva da suinocultura no Brasil.
Understanding the flow of processes in swine production systems and how they work is fundamental to improving reproductive performance. We surveyed 32 boar studs in Brazil, representing 61.53% of the total in the country. Commercial lines were the most common breed (59.38%) used in the studs. Individual pens and stalls were the most commonly used as housing system (71.9%), and 81.25% of the studs reported having some form of thermal control system. For most of the studs (62.51%), average weekly sperm concentration was higher than 200 million cells per mL. Also, for most studs (71.88%) average weekly ejaculate volume was more than 250 mL. In 46.88% of the studs each ejaculate yielded 26 to 40 semen doses. In 6.25% of the studs, 3.5 billion sperm cells per dose were used for artificial, intracervical insemination. Sperm concentration in 46.88% of the studs was determined using a computer-assisted system analysis. The assessment of sperm quality was conducted using morphology, concentration, and microbiological testing. Employees working on semen collection had formal education of elementary/middle school (34.38%) and high school (37.5%). Most of the laboratory technicians had frequented high school (75%). The most time-consuming task was semen processing, taking 16 to 25 h a week (46.8%) and 6 to 10 h was allotted for the cleaning of stud facilities (46.8%). The data collected in the present study allow greater knowledge of this important part in the pig production chain in Brazil.
Author Bragança, José Francisco Manta
Walter, Marina Patricia
Bottan, Juliano
Bennemann, Paulo Eduardo
Machado, Sérgio Abreu
AuthorAffiliation Universidade do Oeste de Santa Catarina
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CitedBy_id crossref_primary_10_3390_ani13050952
crossref_primary_10_1002_mrd_23643
crossref_primary_10_1016_j_anireprosci_2022_107159
crossref_primary_10_1016_j_anireprosci_2024_107501
Cites_doi 10.1111/rda.12544
10.1016/j.prevetmed.2009.02.001
10.1016/j.rvsc.2013.06.022
10.1016/j.theriogenology.2008.06.036
10.1016/j.anireprosci.2013.04.002
10.1016/j.theriogenology.2014.10.004
10.1016/j.theriogenology.2005.04.023
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Issue 11
Keywords manejo do reprodutor
processamento de sêmen
semen processing
semen quality
qualidade seminal
boar stud management
Language English
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VICENTE-FIEL S. (ref12) 2013; 139
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BENNEMANN P.E. (ref2) 2018; 23
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SCHULZE M (ref10) 2015; 83
BORTOLOZZO F.P. (ref3) 2015; 50
KNOX R. (ref7) 2008; 70
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VARGAS, A.J. 2009; 89
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SCHULZE, M 2015; 83
BENNEMANN, P.E. 2018; 23
KNOX, R. 2008; 70
VICENTE-FIEL, S. 2013; 139
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SubjectTerms Age
AGRONOMY
boar stud management
Control systems
Dosage
Flooring
Hogs
Housing
Livestock
Morphology
Mortality
Quality assessment
Questionnaires
Reproduction
Semen
semen processing
semen quality
Sperm
Studs
Swine
Swine production
Systems analysis
Technicians
Thermal control systems
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Title Characterization of Boar Studs in Brazil
URI https://www.proquest.com/docview/2491978895
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782020001100701&lng=en&tlng=en
https://doaj.org/article/98c15473a9574085b3b140746eab6a17
Volume 50
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