Data/hora: 01/06/2024 02:06:55

Provedor de dados: 	96	
País: 	Brazil	
Título: 	Reproductive parameters of Sindhi cows (Bos taurus indicus) treated with two ovulation synchronization protocols	
Autores: 	Mello,Raquel Rodrigues Costa; Mello,Marco Roberto Bourg de; Ferreira,Joaquim Esquerdo; Silva,Ana Paula Toledo Barbosa da; Mascarenhas,Leandro Mendes; Silva,Bernardo Janella Ferreira da; Cardoso,Beatriz de Oliveira; Palhano,Helcimar Barbosa.	
Data: 	2013-06-01	
Ano: 	2013	
Palavras-chave: 	ECG; Follicular growth; Reproduction; Zebu.	
Resumo: 	The objective of this study was to evaluate the reproductive parameters of Sindhi cows aiming to improve the efficiency of fixed-time artificial insemination protocols in this breed. For this purpose, sixteen Sindhi cows were divided into two groups: in group I (EB, n = 8) animals received an intravaginal P4 implant and an application of 2 mg of estradiol benzoate on day 0. On day 8 the implant was removed and 10 mg of Dinoprost were applied; on day 9, 1 mg of estradiol benzoate was applied, and animals were fixed-time artificially inseminated 36 hours later; in group II (EB + eCG, n = 8) animals were subjected to same treatment, and on day eight 400 IU of eCG were applied. From day 0 animals were examined daily by a trans-rectal ultrasound device, where in each assessment the largest follicles of each day were measured. The reproductive parameters observed for groups I and II were: emergence of follicular wave, 4.5±1.4 and 3.8±0.3 days; interval between wave emergence and ovulation, 5.8±1.4 and 7.1±0.3 days; interval between wave emergence and implant removal, 3.5±1.4 and 4.1±0.3 days; interval between implant removal and ovulation, 74.0±11.8 and 82.5±4.2 hours; diameter of the dominant follicle (DF) at the time of implant removal, 7.5±2.5 and 6.6±1.5 mm; maximum diameter of DF, 10.47±8.85 and 3.7±1.2 mm; growth rate of DF, 0.90±0.83 and 0.7±0.6 mm/day; ovulation rate, 75% and 100%; and pregnancy rate, 0% and 50%, respectively. There was no significant difference between the groups. We observed that eCG was not efficient in improving the reproductive parameters analyzed in this breed.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982013000600005	
Editor: 	Sociedade Brasileira de Zootecnia	
Relação: 	10.1590/S1516-35982013000600005	
Formato: 	text/html	
Fonte: 	Revista Brasileira de Zootecnia  v.42 n.6 2013	
Fonte: 	info:eu-repo/semantics/openAccess