Pub Date : 1900-01-01DOI: 10.21451/1809-3000.rbra2021.064
Jair Camargo Ferreira, Rafael Silva Amaral, Bianca de Souza Cintra
{"title":"Ozonioterapia no tratamento auxiliar de éguas inférteis: Potencial angiogênico e antimicrobiano","authors":"Jair Camargo Ferreira, Rafael Silva Amaral, Bianca de Souza Cintra","doi":"10.21451/1809-3000.rbra2021.064","DOIUrl":"https://doi.org/10.21451/1809-3000.rbra2021.064","url":null,"abstract":"","PeriodicalId":153636,"journal":{"name":"Revista Brasileira de Reprodução Animal","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121680204","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.21451/1809-3000.rbra2021.016
K. D. F. Martins e Silva, V. Santos, Manoel Lopes da Silva, Priscila Teixeira de Souza Carneiro, Maykon de Paula FERREIRA DA SILVA, Azimiro Quirino de Oliveira, J. Rocha, Pollyana Oliveira Silva, A. R. Montenegro
{"title":"Variáveis associadas a taxa de prenhez de vacas zebuínas e mestiças submetidas a inseminação artificial em tempo fixo","authors":"K. D. F. Martins e Silva, V. Santos, Manoel Lopes da Silva, Priscila Teixeira de Souza Carneiro, Maykon de Paula FERREIRA DA SILVA, Azimiro Quirino de Oliveira, J. Rocha, Pollyana Oliveira Silva, A. R. Montenegro","doi":"10.21451/1809-3000.rbra2021.016","DOIUrl":"https://doi.org/10.21451/1809-3000.rbra2021.016","url":null,"abstract":"","PeriodicalId":153636,"journal":{"name":"Revista Brasileira de Reprodução Animal","volume":"276 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115600383","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.21451/1809-3000.rbra2022.019
Priscilla Nascimento Guasti, José Antonio Dell’Aqua Junior
{"title":"Estratégias para melhorar a qualidade seminal em garanhões","authors":"Priscilla Nascimento Guasti, José Antonio Dell’Aqua Junior","doi":"10.21451/1809-3000.rbra2022.019","DOIUrl":"https://doi.org/10.21451/1809-3000.rbra2022.019","url":null,"abstract":"","PeriodicalId":153636,"journal":{"name":"Revista Brasileira de Reprodução Animal","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122293489","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.21451/1809-3000.rbra2021.070
J. Kastelic, G. Rizzoto, A. Shahat, J. Ferreira, Jacob Thumdathil
Bull testes must be 2 to 6 C below body temperature for morphologically normal, motile and fertile sperm. Scrotal/testicular thermoregulation is complex, including a coiled testicular artery, surrounded by the venous pampiniform plexus comprising the testicular vascular cone, a counter-current heat exchanger. In addition, heat radiation from the scrotum, sweating, complementary arterial blood supplies, and temperature gradients in the scrotum and testes all contribute to testicular cooling. Despite a long-standing paradigm that mammalian testes are close to hypoxia and blood flow does not increase in response to testicular heating, in recent studies in mice, rams and bulls, warming the testes stimulated increased blood flow, with no indications of testicular hypoxia. Furthermore, hypoxia did not replicate the changes and hyperoxia did not provide protection. Therefore, we concluded that testicular hyperthermia and not secondary hypoxia affects spermatogenesis and sperm quality. Increasing testicular temperature causes many cellular and subcellular changes. As testicular temperature increases, the proportion of defective sperm increases; recovery is dependent upon the nature and duration of the thermal insult. Environmental control of temperature (shade, sprinklers, air conditioning) and some chemical approaches (e.g., melatonin and L-arginine) have promise in reducing the effects of heat stress on bull reproduction.
{"title":"Pathogenesis and mitigation of the deleterious effects of heat stress on bull reproduction","authors":"J. Kastelic, G. Rizzoto, A. Shahat, J. Ferreira, Jacob Thumdathil","doi":"10.21451/1809-3000.rbra2021.070","DOIUrl":"https://doi.org/10.21451/1809-3000.rbra2021.070","url":null,"abstract":"Bull testes must be 2 to 6 C below body temperature for morphologically normal, motile and fertile sperm. Scrotal/testicular thermoregulation is complex, including a coiled testicular artery, surrounded by the venous pampiniform plexus comprising the testicular vascular cone, a counter-current heat exchanger. In addition, heat radiation from the scrotum, sweating, complementary arterial blood supplies, and temperature gradients in the scrotum and testes all contribute to testicular cooling. Despite a long-standing paradigm that mammalian testes are close to hypoxia and blood flow does not increase in response to testicular heating, in recent studies in mice, rams and bulls, warming the testes stimulated increased blood flow, with no indications of testicular hypoxia. Furthermore, hypoxia did not replicate the changes and hyperoxia did not provide protection. Therefore, we concluded that testicular hyperthermia and not secondary hypoxia affects spermatogenesis and sperm quality. Increasing testicular temperature causes many cellular and subcellular changes. As testicular temperature increases, the proportion of defective sperm increases; recovery is dependent upon the nature and duration of the thermal insult. Environmental control of temperature (shade, sprinklers, air conditioning) and some chemical approaches (e.g., melatonin and L-arginine) have promise in reducing the effects of heat stress on bull reproduction.","PeriodicalId":153636,"journal":{"name":"Revista Brasileira de Reprodução Animal","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122802268","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.21451/1809-3000.rbra2021.069
Mário Duarte
{"title":"Alimentando matrizes, garanhões e receptoras de maneira eficiente","authors":"Mário Duarte","doi":"10.21451/1809-3000.rbra2021.069","DOIUrl":"https://doi.org/10.21451/1809-3000.rbra2021.069","url":null,"abstract":"","PeriodicalId":153636,"journal":{"name":"Revista Brasileira de Reprodução Animal","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121411610","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.21451/1809-3000.rbra2021.024
Rodrigo Arruda de Oliveira
{"title":"Nutracêuticos e antioxidantes na qualidade seminal de garanhões resultados obtidos na última década","authors":"Rodrigo Arruda de Oliveira","doi":"10.21451/1809-3000.rbra2021.024","DOIUrl":"https://doi.org/10.21451/1809-3000.rbra2021.024","url":null,"abstract":"","PeriodicalId":153636,"journal":{"name":"Revista Brasileira de Reprodução Animal","volume":" 12","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113948802","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.21451/1809-3000.rbra2022.014
J. B. S. Ferraz
{"title":"Tourinhos genômicos: o que são e sua importância para a produção animal","authors":"J. B. S. Ferraz","doi":"10.21451/1809-3000.rbra2022.014","DOIUrl":"https://doi.org/10.21451/1809-3000.rbra2022.014","url":null,"abstract":"","PeriodicalId":153636,"journal":{"name":"Revista Brasileira de Reprodução Animal","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114793145","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.21451/1809-3000.rbra2021.039
Juliana Moroni, Michael Dyck
{"title":"Desenvolvimento embrionário: quando avaliar o fenótipo e sua relação com o genótipo","authors":"Juliana Moroni, Michael Dyck","doi":"10.21451/1809-3000.rbra2021.039","DOIUrl":"https://doi.org/10.21451/1809-3000.rbra2021.039","url":null,"abstract":"","PeriodicalId":153636,"journal":{"name":"Revista Brasileira de Reprodução Animal","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129851472","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.21451/1809-3000.rbra2021.038
Bruna Rosa Curcio, Gabriela Castro da Silva, Rebeca Scalco
{"title":"Monitoramento do parto em éguas","authors":"Bruna Rosa Curcio, Gabriela Castro da Silva, Rebeca Scalco","doi":"10.21451/1809-3000.rbra2021.038","DOIUrl":"https://doi.org/10.21451/1809-3000.rbra2021.038","url":null,"abstract":"","PeriodicalId":153636,"journal":{"name":"Revista Brasileira de Reprodução Animal","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129987112","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.21451/1809-3000.rbra2022.010
Solange Martins Almeida, N. Severo
{"title":"Morfologia espermática em touros: quais os principais defeitos e o porquê ocorrem","authors":"Solange Martins Almeida, N. Severo","doi":"10.21451/1809-3000.rbra2022.010","DOIUrl":"https://doi.org/10.21451/1809-3000.rbra2022.010","url":null,"abstract":"","PeriodicalId":153636,"journal":{"name":"Revista Brasileira de Reprodução Animal","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133385301","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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