Protected fatty acid supplementation during estrus synchronization treatment on reproductive parameters of dairy goats.
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.
Faculty of Veterinary Medicine, Fluminense Federal University, Niterói, RJ, Brazil.
Juliana Dos Santos Kuhner
JD
Oliveira
Embrapa Goats and Sheep, Estrada Sobral/Groaíras, Sobral, CE, Brazil.
Jeferson Ferreira da
JF
Fonseca
Faculty of Veterinary Medicine, Fluminense Federal University, Niterói, RJ, Brazil.
Joanna Maria Gonçalves
JM
Souza-Fabjan
Faculty of Veterinary Medicine, Fluminense Federal University, Niterói, RJ, Brazil.
Luciana Vieira
LV
Esteves
Faculty of Veterinary Medicine, Fluminense Federal University, Niterói, RJ, Brazil.
Luiz Fernando Rodrigues
LF
Feres
Faculty of Veterinary Medicine, Fluminense Federal University, Niterói, RJ, Brazil.
Carla Aparecida Florentino
CA
Rodrigues
Faculty of Veterinary Medicine, Fluminense Federal University, Niterói, RJ, Brazil.
Rodolpho de Almeida
RA
Torres Filho
Faculty of Veterinary Medicine, Fluminense Federal University, Niterói, RJ, Brazil.
Juliana
J
de Oliveira
Faculty of Veterinary Medicine, Fluminense Federal University, Niterói, RJ, Brazil.
Felipe Zandonadi
FZ
Brandão
D000818:Animals; D006063:Chorionic Gonadotropin; D003008:Cloprostenol; D003612:Dairying; D004032:Diet / Q000662:veterinary*; D019587:Dietary Supplements; D004971:Estrus; D004973:Estrus Synchronization; D005227:Fatty Acids / Q000008:administration & dosage*; D006041:Goats / Q000502:physiology*; D010060:Ovulation; D011372:Progestins
D006063:Chorionic Gonadotropin; D005227:Fatty Acids; D011372:Progestins; D003008:Cloprostenol
PUFA; caprine; energy; ovulation rate; progesterone