Using the same CIDR up to three times for estrus synchronization and artificial insemination in dairy goats - doi: 10.4025/actascianimsci.v33i3.10120

Acta Scientiarum: Animal Sciences

Daniel Maia Nogueira¹  Rodolfo Moraes de Peixoto²  Madriano Christilis³  Alane Pains Oliveira do Monte⁴  Edilson Soares Lopes Júnior⁴  Samara Rodrigues Martins⁴ 

[1] Embrapa Semiárido;Instituto Federal de Educação, Ciência e Tecnologia do Sertão de Pernambuco (IFET-PE);Universidade Federal de Viçosa (UFV);Universidade Federal do Vale do São Francisco (UNIVASF);

关键词: hormone treatment;    small ruminant;    Tropical region;    vaginal device;   

DOI  :  10.4025/actascianimsci.v33i3.10120

来源: DOAJ

【 摘 要 】

The objective of this study was to evaluate the effectiveness of reusing a controlled internal drug release (CIDR) device for up to three times in the reproductive performance of dairy goats raised in the semi-arid zone of northeastern Brazil. Forty-five goats were allocated into three hormone treatments, as follows: CIDR1x, treated with new CIDR during nine days. Two days prior to device removal, injections of 75 µg d-cloprostenol and 300 IU equine chorionic gonadotropin (eCG) were administrated. For the other treatments, the same hormone protocol was used, differing only by the use of the same CIDR for a second time in CIDR2x and for a third time in CIDR3x. The interval from device removal to the onset of estrus (13.3 ± 1.1h vs. 13.8 ± 2.6h vs. 13.3 ± 1.4h), as well as estrus duration (33.6 ± 7.3h vs. 29.6 ± 3.2h vs. 32.8 ± 4.5h), did not differ (p > 0.05) among groups CIDR1x, CIDR2x and CIDR3x, respectively. All synchronized females were found to be in estrus. The overall fertility and prolificacy after artificial insemination were 82.2% and 1.9 kids, respectively, without significant difference (p > 0.05) among treatments. The use of the same CIDR for up to three times was effective using 9-day estrus synchronization protocols in dairy goats.

【 授权许可】

Unknown