Protected fatty acid supplementation during estrus synchronization treatment on reproductive parameters of dairy goats
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- 作者：Juliana dos Santos Kuhner Oliveira ; Jeferson Ferreira da Fonseca ; Joanna Maria Gonç ; alves Souza-Fabjan ; Luciana Vieira Esteves ; Luiz Fernando Rodrigues Feres ; Carla Aparecida Florentino Rodrigues ; Rodolpho de Almeida Torres Filho ; Juliana de Oliveira and Felipe Zandonadi Brandã ; o
- 刊名：Animal Science Journal
- 出版年：2017
- 出版时间：February 2017
- 年：2017
- 卷：88
- 期：2
- 页码：254-258
- 全文大小：192K
- ISSN：1740-0929
文摘
This study evaluated the effect of the protected fatty acid inclusion during estrus synchronization on reproductive parameters. Goats (n = 32) received progestagen sponges for 6 days and 200 IU equine chorionic gonadotropin and 30 µg d-cloprostenol were given on Day 5. No difference was found among control (C), 1% protected fatty acid inclusion (C + 1%) or 4% protected fatty acid inclusion (C + 4%) groups, respectively, in estrus (100.0, 100.0 or 90.9%), estrus duration (31.6 ± 12.3; 43.2 ± 12.9 or 40.8 ± 14.1 h), animals ovulating (100.0, 90.0 or 100.0%) or ovulation rate (1.3 ± 0.5; 1.1 ± 0.3 or 1.2 ± 0.4). The interval from sponge removal to ovulation and from estrus to ovulation, respectively, were shorter for C + 4% (45.2 ± 8.0 h; 18.3 ± 11.0 h) compared with C (56.3 ± 12.6 h; 30.6 ± 10.5 h) or C + 1% (57.7 ± 8.7 h; 30.3 ± 11.1 h). The average ovulatory follicle diameter was smaller for C + 4% (6.2 ± 0.7 mm) than C (7.5 ± 0.8 mm), but similar to C + 1% (7.0 ± 1.5 mm). Insulin, insulin-like growth factor 1, glucose and progesterone concentrations were similar among groups. The inclusion of protected fatty acid during synchronization treatment promoted no benefits on ovulation rate, but 4% anticipated the ovulation time.