The effect of clitoral stimulation post artificial insemination on pregnancy rates of multiparous Bos indicus beef cows submitted to estradiol/progesterone-based estrus synchronization protocol

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Autor(es): dc.contributorTexas A&M Univ-
Autor(es): dc.contributorPontificia Univ Catolica Minas Gerais-
Autor(es): dc.contributorRural Tec-
Autor(es): dc.contributorUniversidade Estadual Paulista (Unesp)-
Autor(es): dc.creatorOliveira Filho, Ramiro-
Autor(es): dc.creatorCooke, Reinaldo F.-
Autor(es): dc.creatorMello, Gustavo A. de-
Autor(es): dc.creatorPereira, Victor M.-
Autor(es): dc.creatorVasconcelos, Jose Luiz M. [UNESP]-
Autor(es): dc.creatorPohler, Ky G.-
Data de aceite: dc.date.accessioned2022-02-22T00:11:26Z-
Data de disponibilização: dc.date.available2022-02-22T00:11:26Z-
Data de envio: dc.date.issued2020-12-09-
Data de envio: dc.date.issued2020-12-09-
Data de envio: dc.date.issued2020-07-01-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1093/jas/skaa195-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/197153-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/197153-
Descrição: dc.descriptionClitoral stimulation after artificial insemination (AI) in beef cattle is a common practice utilized by AI technicians; however, the effect of clitoral stimulation during fixed-time AI (TAI) is still unknown. The objective of the present experiment was to evaluate the effect of clitoral stimulation on temperament responses and pregnancy rates to TAI in Bos indicus beef cows. A total of 1,186 multiparous Nellore cows across three different locations were assigned to an estradiol/progesterone-based estrus synchronization + TAI protocol (day -11 to 0). Cows were randomly assigned to receive either 3 s of clitoral stimulation (n = 602) or no clitoral stimulation (n = 584) immediately after TAI (day 0). Cow body condition score (BCS) was recorded on day -11. Estrus expression was evaluated based on estrus detection visual aid patch activation on day 0 (estrus, >= 50% activated; no estrus, <50% activated). Temperament was assessed by individual chute score based on a 5-point scale before TAI, and individual exit velocity was measured after clitoral stimulation. Pregnancy diagnosis was performed 30 d after TAI via transrectal ultrasonography. Pregnancy rate to TAI was positively affected by BCS (P < 0.01) and estrus expression (P = 0.03). Pregnancy rates of cows receiving clitoral stimulation did not differ (P = 0.39) from cows non-stimulated (47.5 +/- 4.6% vs. 44.3 +/- 4.6%, respectively). No interaction of clitoral stimulation and estrus expression was observed (P = 0.26). Chute score was positively correlated to exit velocity (P < 0.01; r = 0.29); however, clitoral stimulation did not affect exit velocity (P = 0.86). In summary, pregnancy rates to TM are influenced by various factors and multiple strategies have the potential to increase the fertility of beef cows submitted to TM; however, clitoral stimulation of Bos indicus beef cows did not improve TAI pregnancy rate.-
Descrição: dc.descriptionUnited States Department of Agriculture - National Institute of Food and Agriculture-
Descrição: dc.descriptionTexas A&M Univ, Dept Anim Sci, Pregnancy & Dev Programming Area Excellence, College Stn, TX 77843 USA-
Descrição: dc.descriptionPontificia Univ Catolica Minas Gerais, Pocos De Caldas, MG, Brazil-
Descrição: dc.descriptionRural Tec, Iaciara, Go, Brazil-
Descrição: dc.descriptionSao Paulo State Univ, Dept Anim Prod, Botucatu, SP, Brazil-
Descrição: dc.descriptionSao Paulo State Univ, Dept Anim Prod, Botucatu, SP, Brazil-
Descrição: dc.descriptionUnited States Department of Agriculture - National Institute of Food and Agriculture: W3112-TEX07702-
Formato: dc.format5-
Idioma: dc.languageen-
Publicador: dc.publisherOxford Univ Press Inc-
Relação: dc.relationJournal Of Animal Science-
???dc.source???: dc.sourceWeb of Science-
Palavras-chave: dc.subjectbeef cows-
Palavras-chave: dc.subjectclitoral stimulation-
Palavras-chave: dc.subjectfixed-time artificial insemination-
Título: dc.titleThe effect of clitoral stimulation post artificial insemination on pregnancy rates of multiparous Bos indicus beef cows submitted to estradiol/progesterone-based estrus synchronization protocol-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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