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Bioclimatic thermal stress indices and their relationships with andrological characteristics in hair rams.

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Title: Bioclimatic thermal stress indices and their relationships with andrological characteristics in hair rams.
Authors: Molina, Julio Constantino Jerí1 (AUTHOR) jcjerim@gmail.com, da Silva, Rebeca Santos2 (AUTHOR), Bidegain, Fabiana Almeida2 (AUTHOR), Souza, Yânca Bizerra3 (AUTHOR), Purdy, Phillip H.4 (AUTHOR), Blackburn, Harvey D.4 (AUTHOR), Azevedo, Hymerson Costa3 (AUTHOR)
Source: International Journal of Biometeorology. Feb2024, Vol. 68 Issue 2, p253-261. 9p.
Subject Terms: *Thermal stresses, *Semen, *Semen analysis, *Thermal comfort, *Spermatozoa, *Hair
Abstract: This study evaluated relationships among reproductive parameters and the bioclimatic indices: temperature and humidity index (THI), equivalent temperature index (ETI), black globe temperature and humidity index (BGTHI), and thermal comfort index (TCI), during the first 45 days of spermatogenesis (SP-45) and during the 15 days of sperm transit through the epididymis (STP-15) that preceded the reproductive assessments (ReA). Such information is useful in determining the optimal breeding season in Northeast Brazil. Santa Inês rams (n = 25) underwent two ReA in three periods of the year (D-P = dry; R-P = rainy and RD-P = rainy/dry transition), and the bioclimatic indices were calculated at the corresponding SP-45 and STP-15 timepoints prior to each ReA. Sperm kinetic parameters in D-P were depressed compared to R-P and RD-P (P < 0.05). The index values had an antagonistic relationship with most parameters and regression analysis demonstrated that the BGTHI and the TCI had a negative association with the progressive motility, curvilinear, straight line, and average path velocities, and a positive association with slow sperm in the ejaculate in SP-45 and STP-15 phases (P < 0.01). Semen quality kinetics is affected throughout the year by the environment and it is apparent that it is impaired in D-P and better in R-P and RD-P seasons. The BGTHI and TCI measured in the sperm production phase classified the environment most coherently and presented better association with the behavior of sperm kinetics. [ABSTRACT FROM AUTHOR]
Database: Energy & Power Source
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Header DbId: enr
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An: 174841543
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  Label: Title
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  Data: Bioclimatic thermal stress indices and their relationships with andrological characteristics in hair rams.
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  Data: &lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Molina%2C+Julio+Constantino+Jer&#237;%22&quot;&gt;Molina, Julio Constantino Jer&#237;&lt;/searchLink&gt;&lt;relatesTo&gt;1&lt;/relatesTo&gt; (AUTHOR)&lt;i&gt; jcjerim@gmail.com&lt;/i&gt;&lt;br /&gt;&lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22da+Silva%2C+Rebeca+Santos%22&quot;&gt;da Silva, Rebeca Santos&lt;/searchLink&gt;&lt;relatesTo&gt;2&lt;/relatesTo&gt; (AUTHOR)&lt;br /&gt;&lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Bidegain%2C+Fabiana+Almeida%22&quot;&gt;Bidegain, Fabiana Almeida&lt;/searchLink&gt;&lt;relatesTo&gt;2&lt;/relatesTo&gt; (AUTHOR)&lt;br /&gt;&lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Souza%2C+Y&#226;nca+Bizerra%22&quot;&gt;Souza, Y&#226;nca Bizerra&lt;/searchLink&gt;&lt;relatesTo&gt;3&lt;/relatesTo&gt; (AUTHOR)&lt;br /&gt;&lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Purdy%2C+Phillip+H%2E%22&quot;&gt;Purdy, Phillip H.&lt;/searchLink&gt;&lt;relatesTo&gt;4&lt;/relatesTo&gt; (AUTHOR)&lt;br /&gt;&lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Blackburn%2C+Harvey+D%2E%22&quot;&gt;Blackburn, Harvey D.&lt;/searchLink&gt;&lt;relatesTo&gt;4&lt;/relatesTo&gt; (AUTHOR)&lt;br /&gt;&lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Azevedo%2C+Hymerson+Costa%22&quot;&gt;Azevedo, Hymerson Costa&lt;/searchLink&gt;&lt;relatesTo&gt;3&lt;/relatesTo&gt; (AUTHOR)
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  Data: &lt;searchLink fieldCode=&quot;JN&quot; term=&quot;%22International+Journal+of+Biometeorology%22&quot;&gt;International Journal of Biometeorology&lt;/searchLink&gt;. Feb2024, Vol. 68 Issue 2, p253-261. 9p.
– Name: Subject
  Label: Subject Terms
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  Data: *&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Thermal+stresses%22&quot;&gt;Thermal stresses&lt;/searchLink&gt;&lt;br /&gt;*&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Semen%22&quot;&gt;Semen&lt;/searchLink&gt;&lt;br /&gt;*&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Semen+analysis%22&quot;&gt;Semen analysis&lt;/searchLink&gt;&lt;br /&gt;*&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Thermal+comfort%22&quot;&gt;Thermal comfort&lt;/searchLink&gt;&lt;br /&gt;*&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Spermatozoa%22&quot;&gt;Spermatozoa&lt;/searchLink&gt;&lt;br /&gt;*&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Hair%22&quot;&gt;Hair&lt;/searchLink&gt;
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: This study evaluated relationships among reproductive parameters and the bioclimatic indices: temperature and humidity index (THI), equivalent temperature index (ETI), black globe temperature and humidity index (BGTHI), and thermal comfort index (TCI), during the first 45 days of spermatogenesis (SP-45) and during the 15 days of sperm transit through the epididymis (STP-15) that preceded the reproductive assessments (ReA). Such information is useful in determining the optimal breeding season in Northeast Brazil. Santa In&#234;s rams (n = 25) underwent two ReA in three periods of the year (D-P = dry; R-P = rainy and RD-P = rainy/dry transition), and the bioclimatic indices were calculated at the corresponding SP-45 and STP-15 timepoints prior to each ReA. Sperm kinetic parameters in D-P were depressed compared to R-P and RD-P (P &lt; 0.05). The index values had an antagonistic relationship with most parameters and regression analysis demonstrated that the BGTHI and the TCI had a negative association with the progressive motility, curvilinear, straight line, and average path velocities, and a positive association with slow sperm in the ejaculate in SP-45 and STP-15 phases (P &lt; 0.01). Semen quality kinetics is affected throughout the year by the environment and it is apparent that it is impaired in D-P and better in R-P and RD-P seasons. The BGTHI and TCI measured in the sperm production phase classified the environment most coherently and presented better association with the behavior of sperm kinetics. [ABSTRACT FROM AUTHOR]
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=enr&AN=174841543
RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1007/s00484-023-02587-0
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 9
        StartPage: 253
    Subjects:
      – SubjectFull: Thermal stresses
        Type: general
      – SubjectFull: Semen
        Type: general
      – SubjectFull: Semen analysis
        Type: general
      – SubjectFull: Thermal comfort
        Type: general
      – SubjectFull: Spermatozoa
        Type: general
      – SubjectFull: Hair
        Type: general
    Titles:
      – TitleFull: Bioclimatic thermal stress indices and their relationships with andrological characteristics in hair rams.
        Type: main
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      – PersonEntity:
          Name:
            NameFull: Molina, Julio Constantino Jerí
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            NameFull: da Silva, Rebeca Santos
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            NameFull: Bidegain, Fabiana Almeida
      – PersonEntity:
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            NameFull: Souza, Yânca Bizerra
      – PersonEntity:
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            NameFull: Purdy, Phillip H.
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            NameFull: Blackburn, Harvey D.
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            NameFull: Azevedo, Hymerson Costa
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          Dates:
            – D: 01
              M: 02
              Text: Feb2024
              Type: published
              Y: 2024
          Identifiers:
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              Value: 00207128
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              Value: 68
            – Type: issue
              Value: 2
          Titles:
            – TitleFull: International Journal of Biometeorology
              Type: main
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