Data/hora: 24/09/2024 14:53:09

Biblioteca(s): 	Embrapa Suínos e Aves.	
Data corrente: 	16/12/2022	
Data da última atualização: 	16/12/2022	
Autoria: 	LEAL, D. F.; VIANA, C. H. C.; ALMOND, G. W.; MONTEIRO, M. S.; GARBOSSA, C. A. P.; CARNEVALE, R. F.; MURO, B. B. D.; POOR, A. P.; PUGLIESI, G.; NICHI, M.; WATANABE, T. T. N.; MARQUES, M. G.	
Afiliação: 	DIEGO FEITOSA LEAL, Universidade de São Paulo; CARLOS HENRIQUE CABRAL VIANA, Pontifícia Universidade Católica de Minas Gerais; GLEN WILLIAM ALMOND, North Carolina State University; MATHEUS SALIBA MONTEIRO, Universidade de São Paulo; CESAR AUGUSTO POSPISSIL GARBOSSA, Universidade de São Paulo; RAFAELLA FERNANDES CARNEVALE, Universidade de São Paulo; BRUNO BRACCO DONATELLI MURO, Universidade de São Paulo; ANDRÉ PEGORARO POOR, Universidade de São Paulo; GUILHERME PUGLIESI, Universidade de São Paulo; MARCÍLIO NICHI, Universidade de São Paulo; TATIANE TERUMI NEGRÃO WATANABE, North Carolina State University; MARIANA GROKE MARQUES, CNPSA.	
Título: 	Estrus synchronization of seplacement silts ssing sstradiol sipionate and PGF2α and its effects on reproductive outcomes.	
Ano de publicação: 	2022	
Fonte/Imprenta: 	Animals, v. 12, n. 3393, 2022.	
DOI: 	https://doi.org/10.3390/ani12233393	
Idioma: 	Português	
Conteúdo: 	Abstract: In this study, we evaluated the effectiveness of using estrogen-induced prolonged luteal function followed by prostaglandin F2 alpha (PGF2&#945;) treatment to synchronize estrus in gilts. On day12 of the estrus cycle (D0 = first day of standing estrus), 52 gilts were assigned at random to two experimental groups: non-treated gilts (CON, n = 22), serving as controls, and prolonged luteal function group (CYP, n = 30), receiving a single treatment with 10 mg of estradiol cypionate intramuscularly Starting on day 12, blood samples were collected for estradiol and progesterone assays. Estrus detection started on day 17. Gilts from the CON group were inseminated at the onset of natural estrus. On day 28 CYP gilts were treated with PGF2&#945; to induce luteolysis and inseminated at the onset of estrus. Gilts were slaughtered 5 d after the last insemination. A single treatment with estradiol cypionate prolonged luteal function in 90% of treated gilts. The duration of the estrous cycle was longer (p < 0.0001) for CYP gilts compared to CON gilts. CYP gilts showed synchronized estrus 3.96 ± 0.19 d after induction of luteolysis. The conception rate was similar (p = 0.10) for CON and CYP gilts. No difference was observed in the embryo recovery rate (p = 0.18) and total number of embryos per female (p = 0.06). The percentage of unfertilized oocytes, fragmented embryos and viable embryos was similar among females from CON and CYP groups (p > 0.05). The treatment of gilts with a single application of 10 mg of estradiol cypionate on day 12 of the estrous cycle was effective in prolonging luteal function and treatment with PGF2&#945; resulted in synchronized estrus. Additionally, the synchronization protocol had no deleterious effect on fertility and embryonic development.	
Palavras-Chave: 	Desenvolvimento embrionário; Embryo development; Estradiol cypionate; Pigs; Prostaglandin.	
Thesagro: 	Ciclo Estral; Fertilidade; Prostaglandina; Sincronização do Cio; Suinocultura.	
Thesaurus Nal: 	Animal fertility; Estrous cycle; Estrus synchronization.	
Categoria do assunto: 	--	
Registro original: 	Embrapa Suínos e Aves (CNPSA)	
Exemplares: 	CNPSA - (22486-1) - UPC - AP - DD -  -  -  - DIS