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The Effect of Conventional Semen, Sexed-Semen, and Embryo Transfer on Pregnancy Rate in Holstein Dairy Cows.

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Title: The Effect of Conventional Semen, Sexed-Semen, and Embryo Transfer on Pregnancy Rate in Holstein Dairy Cows.
Authors: Koca, Davut1 davutkoca@yyu.edu.tr, Aktar, Ahmet2, Turgut, Ali Osman3, Sağırkaya, Hakan2, Alçay, Selim2
Source: Journal of Research in Veterinary Medicine. 2023, Vol. 42 Issue 2, p99-103. 5p.
Subject Terms: *EMBRYO transfer, *CATTLE pregnancy, *HOLSTEIN-Friesian cattle, *CATTLE reproduction, *SEMEN analysis, *PROGESTERONE, *VETERINARY medicine, *ESTRUS synchronization, *PREGNANCY in animals
Abstract: In this study, it was aimed to detect the effects of conventional semen, sexed-semen and embryo transfer on pregnancy rates in Holstein dairy cows. In the study, a total of 139 healthy cows with the serum progesterone > 8 ng/ml were used as animal material. Estrus synchronization protocol was applied and cows were divided into three different groups as conventional semen group (G1, n=46), sexed semen group (G2, n=47), and embryo transfer group (G3, n=46) considering age, body condition score, lactation number, and body weight. Cows in G1 and G2 were inseminated with conventional semen and sexed-semen, respectively. Embryo transfer was performed to cows in Group 3 (n=46) 7th day after estrus. The embryos were transferred to recipients as freshly. Pregnancy examinations for the cows were conducted on the 30th and 60th days of gestation. The statistical analysis of the obtained results was performed. Pregnancy rates were detected as %50, %46,8 and %69,56 in G1, G2, and G3 respectively on 30th day. On 60th day, however, pregnancy rates were %45.60, %42.55 and %67.39 in G1, G2, and G3 respectively due to embryonic losses. The pregnancy rate was significantly higher in the embryo transfer group (G3) compared to the conventional semen (G1) and sexed-semen (G2) group (p<0.05) on both 30th and 60th days. There was no significant difference between G1 and G2 (p>0.05). Findings led to the conclusion that higher serum progesterone level may increase pregnancy rate in cattle. In addition, it is evident that embryo transfer has the potential for widespread use in the field of veterinary medicine in terms of genetic progress. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Research in Veterinary Medicine is the property of Uludag Universitesi Veteriner Fakultesi and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: The Effect of Conventional Semen, Sexed-Semen, and Embryo Transfer on Pregnancy Rate in Holstein Dairy Cows.
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  Data: &lt;searchLink fieldCode=&quot;JN&quot; term=&quot;%22Journal+of+Research+in+Veterinary+Medicine%22&quot;&gt;Journal of Research in Veterinary Medicine&lt;/searchLink&gt;. 2023, Vol. 42 Issue 2, p99-103. 5p.
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  Data: *&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22EMBRYO+transfer%22&quot;&gt;EMBRYO transfer&lt;/searchLink&gt;&lt;br /&gt;*&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22CATTLE+pregnancy%22&quot;&gt;CATTLE pregnancy&lt;/searchLink&gt;&lt;br /&gt;*&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22HOLSTEIN-Friesian+cattle%22&quot;&gt;HOLSTEIN-Friesian cattle&lt;/searchLink&gt;&lt;br /&gt;*&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22CATTLE+reproduction%22&quot;&gt;CATTLE reproduction&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;%22PROGESTERONE%22&quot;&gt;PROGESTERONE&lt;/searchLink&gt;&lt;br /&gt;*&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22VETERINARY+medicine%22&quot;&gt;VETERINARY medicine&lt;/searchLink&gt;&lt;br /&gt;*&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22ESTRUS+synchronization%22&quot;&gt;ESTRUS synchronization&lt;/searchLink&gt;&lt;br /&gt;*&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22PREGNANCY+in+animals%22&quot;&gt;PREGNANCY in animals&lt;/searchLink&gt;
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: In this study, it was aimed to detect the effects of conventional semen, sexed-semen and embryo transfer on pregnancy rates in Holstein dairy cows. In the study, a total of 139 healthy cows with the serum progesterone &gt; 8 ng/ml were used as animal material. Estrus synchronization protocol was applied and cows were divided into three different groups as conventional semen group (G1, n=46), sexed semen group (G2, n=47), and embryo transfer group (G3, n=46) considering age, body condition score, lactation number, and body weight. Cows in G1 and G2 were inseminated with conventional semen and sexed-semen, respectively. Embryo transfer was performed to cows in Group 3 (n=46) 7th day after estrus. The embryos were transferred to recipients as freshly. Pregnancy examinations for the cows were conducted on the 30th and 60th days of gestation. The statistical analysis of the obtained results was performed. Pregnancy rates were detected as %50, %46,8 and %69,56 in G1, G2, and G3 respectively on 30th day. On 60th day, however, pregnancy rates were %45.60, %42.55 and %67.39 in G1, G2, and G3 respectively due to embryonic losses. The pregnancy rate was significantly higher in the embryo transfer group (G3) compared to the conventional semen (G1) and sexed-semen (G2) group (p&lt;0.05) on both 30th and 60th days. There was no significant difference between G1 and G2 (p&gt;0.05). Findings led to the conclusion that higher serum progesterone level may increase pregnancy rate in cattle. In addition, it is evident that embryo transfer has the potential for widespread use in the field of veterinary medicine in terms of genetic progress. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: &lt;i&gt;Copyright of Journal of Research in Veterinary Medicine is the property of Uludag Universitesi Veteriner Fakultesi and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder&#39;s express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.&lt;/i&gt; (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.30782/jrvm.1361215
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 5
        StartPage: 99
    Subjects:
      – SubjectFull: EMBRYO transfer
        Type: general
      – SubjectFull: CATTLE pregnancy
        Type: general
      – SubjectFull: HOLSTEIN-Friesian cattle
        Type: general
      – SubjectFull: CATTLE reproduction
        Type: general
      – SubjectFull: SEMEN analysis
        Type: general
      – SubjectFull: PROGESTERONE
        Type: general
      – SubjectFull: VETERINARY medicine
        Type: general
      – SubjectFull: ESTRUS synchronization
        Type: general
      – SubjectFull: PREGNANCY in animals
        Type: general
    Titles:
      – TitleFull: The Effect of Conventional Semen, Sexed-Semen, and Embryo Transfer on Pregnancy Rate in Holstein Dairy Cows.
        Type: main
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      – PersonEntity:
          Name:
            NameFull: Koca, Davut
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            NameFull: Aktar, Ahmet
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            NameFull: Turgut, Ali Osman
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            NameFull: Sağırkaya, Hakan
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            NameFull: Alçay, Selim
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            – D: 01
              M: 07
              Text: 2023
              Type: published
              Y: 2023
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              Value: 42
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              Value: 2
          Titles:
            – TitleFull: Journal of Research in Veterinary Medicine
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