Luteal changes after treatment with sub-luteolytic doses of prostaglandin (cloprostenol sodium) in cattle
Nenhuma Miniatura disponível
Data
2015-02-01
Autores
Trevisol, Eduardo [UNESP]
Ferreira, Jair Camargo [UNESP]
Ackermann, Camila Louise [UNESP]
Destro, Flavia Caroline [UNESP]
Marques Filho, Wolff Camargo [UNESP]
Carmagos, Aline Souza [UNESP]
Biehl, Marcos Vinicius
Amaral, Jackson Barros do
Pantoja, José Carlos de Figueiredo [UNESP]
Sartori, Roberto
Título da Revista
ISSN da Revista
Título de Volume
Editor
Elsevier B.V.
Resumo
This study characterizes the physiological and morphological changes related to partial luteolysis in bovine corpus luteum (CL) after challenges with sub-doses of cloprostenol sodium on Day 6 (D6) of the estrous cycle. Cows (n =12/treatment) were treated as follows: Control (2 mL, saline, i.m.); 2XPGF (two treatments i.m. 500 mu g of cloprostenol sodium 2 h apart) and 1/6PGF (83.3 mu g of cloprostenol sodium, i.m., once). Plasma progesterone (P4) concentration, CL volume and blood flow were measured immediately before the treatments, then every 8 h (h) for 48 h. In the Control, P4 concentrations were higher at 48 h than at Oh. P4 decreased 8 h after 2XPGF treatment (P< 0.05), and remained low until the end of the trial. P4 decreased in 1/6PGF between 8 and 16 h (P< 0.05), then began to rebound at 24 h. Luteal volume was higher in Controls at 48 h than at Oh. Under 1/6PGF, luteal volume decreased at 24 h (P <0.05) and began to rebound at 32 h. Luteal volume and blood flow were reduced starting at 24 and 32 h, respectively, after 2XPGF treatment (P< 0.05). In this study, we were able to describe the partial luteolysis phenomenon, induced by a treatment of a D6CL with cloprostenol sub-dose.
Descrição
Palavras-chave
Cow, Corpus luteum, Partial luteolysis
Como citar
Animal Reproduction Science. Amsterdam: Elsevier Science Bv, v. 153, p. 8-12, 2015.