Título:	Impact of FSH-Induced Ovarian Stimulation on OocyteRecovery and In Vitro Embryo Production in the RedSindhi Cows.
Autor:	PIVATO, I. MARTINS, G. H. L. FARIA, L. C. de BESSLER, H. C. MARTINS, C. F.
Afiliación:	IVO PIVATO, UNIVERSIDADE DE BRASÍLIA; GEORGE HENRIQUE LIMA MARTINS, UNIVERSIDADE DE BRASÍLIA; LUCAS COSTA DE FARIA, UNIVERSITY DE BRASÍLIA; HEIDI CHRISTINA BESSLER; CARLOS FREDERICO MARTINS, CPAC.
Año:	2026
Referencia:	Reproduction in Domestic Animals, v. 61, e70170, 2026.
Descripción:	Follicle-stimulating hormone (FSH) plays an important role in regulating reproductive events, particularly follicular develop-ment and oocyte competence acquisition. Some studies using FSH protocols in zebu cattle were performed, but data regardingits application in the Red Sindhi breed are scarce and therefore warranted. In this context, this study aimed to assess the FSHadministration regimen—multiple doses (T1-m) and single dose (T2-s) and coasting period (54 h vs. 102 h) in oocyte developmen-tal competence in Sindhi females. A total of 80 mg of FSH was administered either as a single application (40 mg IM + 40 mg, SC)or compared to multiple applications (30 mg + 30 mg + 20 mg, IM). Animals that did not receive FSH treatment serve as controls(CT). The present data showed that both T1 and T2 applications resulted in a greater number of medium-sized follicles (7.80 vs.8.57, p < 0.05), oocyte recovery (9.76 vs. 9.81), when compared to control (5.20; 6.30, respectively). Animals from T2 also had agreater number of aspirated follicles (12.52 vs. 8.70, p < 0.05), viable oocytes (7.33 vs. 4.45, p < 0.05) and blastocyst rates (43.22%vs. 29.11%, p < 0.05) than control animals. Our results showed that a reduced dose of FSH both single and multiple applicationsenhance oocyte developmental competence. Moreover, a single application of FSH combined with a longer coasting period offerspractical advantages, making this approach more attractive for Sindhi breeding programmes.
Thesagro:	Produção Animal Hormônio Reprodução Reprodução Animal Melhoramento Genético Animal
ISSN:	0936-6768
DOI:	https://doi.org/10.1111/rda.70170
Tipo de Material:	Artigo de periódico
Acceso:	openAccess
Aparece en las colecciones:	Artigo em periódico indexado (CPAC)