Characterization of the LH peak after short and long fixed-time artificial insemination protocols in sheep raised in the tropics
dc.contributor.author | Soriano, Gabriela Azenha Milani | |
dc.contributor.author | de Ruediger, Felipe Rydygier [UNESP] | |
dc.contributor.author | Zundt, Marilice | |
dc.contributor.author | Gomes, Marco Aurélio da Cruz Nobre | |
dc.contributor.author | de Souza, Lilian Francisco Arantes | |
dc.contributor.author | Giometti, Ines Cristina | |
dc.contributor.author | de Paula Nogueira, Guilherme [UNESP] | |
dc.contributor.author | Zanelli, Gustavo Ricci | |
dc.contributor.author | de Almeida Rego, Fabiola Cristiane | |
dc.contributor.author | Castilho, Caliê | |
dc.contributor.institution | Presidente Prudente (UNOESTE) | |
dc.contributor.institution | Universidade Estadual Paulista (Unesp) | |
dc.contributor.institution | Universidade Norte do Paraná (UNOPAR) | |
dc.date.accessioned | 2018-12-11T16:55:10Z | |
dc.date.available | 2018-12-11T16:55:10Z | |
dc.date.issued | 2018-09-01 | |
dc.description.abstract | The aim of this study was to evaluate the peak in luteinizing hormone (LH) and the pregnancy rate of sheep (Texel × Santa Inês) in the tropics using short- (6 days) and long-term (12 days) progesterone protocols followed by artificial insemination (AI) both in and out of the breeding season. Experiment 1 was conducted within (IN) the breeding season (autumn, n = 36), and experiment 2 was conducted outside (OUT) of the breeding season (spring, n = 43). In each experiment, the sheep were divided into two groups (6 or 12 days) according to the duration of treatment with a single-use progesterone release vaginal device (CIDR®, Pfizer, São Paulo, SP, Brazil), and blood samples were collected from 10 animals per group every 4 hr to measure the LH and progesterone concentrations. In the spring, the characteristics of the LH peak did not differ between groups; but in the autumn, there were differences between groups at the beginning (G-6 IN: 36.44 ± 5.46 hr; G-12 IN: 26.57 ± 4.99 hr) and end of the LH peak (G-6 IN: 46.22 ± 7.51 hr; G-12 IN: 34.86 ± 8.86 hr). The results showed alterations in the LH peak during the breeding season only in the sheep undergoing the short-term protocol. | en |
dc.description.affiliation | Universidade do Oeste Paulista Presidente Prudente (UNOESTE) | |
dc.description.affiliation | Universidade Estadual Paulista (UNESP) | |
dc.description.affiliation | Universidade Norte do Paraná (UNOPAR) | |
dc.description.affiliationUnesp | Universidade Estadual Paulista (UNESP) | |
dc.description.sponsorship | Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) | |
dc.format.extent | 1245-1252 | |
dc.identifier | http://dx.doi.org/10.1111/asj.13051 | |
dc.identifier.citation | Animal Science Journal, v. 89, n. 9, p. 1245-1252, 2018. | |
dc.identifier.doi | 10.1111/asj.13051 | |
dc.identifier.issn | 1740-0929 | |
dc.identifier.issn | 1344-3941 | |
dc.identifier.scopus | 2-s2.0-85052712694 | |
dc.identifier.uri | http://hdl.handle.net/11449/171398 | |
dc.language.iso | eng | |
dc.relation.ispartof | Animal Science Journal | |
dc.relation.ispartofsjr | 0,586 | |
dc.rights.accessRights | Acesso restrito | |
dc.source | Scopus | |
dc.subject | CIDR | |
dc.subject | photoperiod | |
dc.subject | progesterone | |
dc.subject | radioimmunoassay | |
dc.subject | Santa Inês | |
dc.title | Characterization of the LH peak after short and long fixed-time artificial insemination protocols in sheep raised in the tropics | en |
dc.type | Artigo | |
unesp.author.orcid | 0000-0003-3300-8116[10] |