BRANDÃO, F. Z.

BRUSCHI, J. H.

FONSECA, J. F. da

NASCIMENTO, P. M. P.

OLIVEIRA, A. P.

PEREIRA, P. F. V.

PONTELLO, V. R.

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 9th International Conference on GoatsSustainable Goat Production: Challenges and Opportunities of Small and Large Enterprises  346. Evaluation rates of ovulation and pregnancy in Toggemburg goats after hormonal treatment with synthetic progesterone 12, 9 and 6 days  Paula Maria Pires do Nascimento1*; Felipe Zandonadi Brandão1; Priscilla F.V. Pereira1; Vinícius Ribeiro Pontello2;  André Penido Oliveira3;  José Henrique Bruski3 and Jeferson Ferreira da Fonseca4  1 Federal Fluminense University,  R. Vital Brasil Filho, 64 - CEP: 24.230 – 340, Niterói – RJ, Brasil;  2 Pontificia Catolic University of  Poços de Caldas, Av. Padre Francis Cletus Cox, 1661 - CEP: 37701-355  – Poços de Caldas – MG , Brasil.  3 Embrapa Dairy Cattle Rearch – R. Eugênio do Nascimento, 610 - CEP: 36038-330   - Juiz de Fora – MG, Brasil; 4 Embrapa Goats, Três Lagoas Farm, Estrada Sobral/Groaíras, km 4 - CEP: 62011-970  Sobral – CE, Brasil. * E-mail: paulampn@gmail.com  The aim of the study was to evaluate the rates of ovulation and pregnancy, after the use of cotrolled internal drug release device impregnated with progesterone (CIDR® - Pfizer) 12, 9 and 6 days, in anoestrus season. Animals (N=51) were used, distributed homogeneously into 2 groups (G1 = 30 animals and G2 = 21 animals). Each group had 3 treatments, treatment 1 (T1) remained 12 days with CIDR®, weight 45.71 ± 0.64kg and 3.42 ± 0.11 for body condition score; treatment 2 (T2) 9 days with CIDR®, weight 45, 76 ± 0.98kg and 3.59 ± 0.17 for body condition score and treatment 3 (T3) 6 days with CIDR®, weight 47.66 ± 1.66kg and body condition score 3.52  ± 0,32. With permanence of CIDR® 12, with 9 and 6 days respectively. The goats received dose of 1 ml of prostaglandin subvulvar (Lutalyse® - Pfizer) on the insertion of the device in 200 IU of eCG (Novormon® - Schering-Plough) 24 hours before the removal of CIDR®. In both groups after the removal of the progesterone, was carried out monitoring of the animals by transrectal ultrasonography 8 to 8 hours until the confirmation of ovulation. The method of mating was covered by natural insemination in G1 and artificial insemination with fixed time (AIFT) in G2, 50 hours after the removal of the CIDR®. The period that includes the start of estrus to ovulation was in G1 23.3 ± 4.08 hours and 15.47 ± 4.08 hours to G2. The percentage of animals that had ovulation was 100% in G1 and G2, 85% (6 / 7), 71% (5 / 7) and 71% (5 / 7) for T1, T2 and T3, respectively, But there was no significant difference (p   0.05) between treatments (Fisher test), however the ovulation between groups differed by Chi-square test. The pregnancies of G1 had 60% (6 / 10), 70% (7 / 10) and 40% (4 / 10) for T1, T2 and T3, respectively in G2, 50% (3 / 3), 80 % (1 / 5) and 60% (3 / 5) for T1, T2 and T3, respectively, with no statistical difference between treatments by Fisher test and between groups (chi-square test). The induction and synchrony of estrus in goats with CIDR® in the period of anoestrus season, independent of the time of exposure to P4 result in good fertility, both in natural and in AIFT.   XXIII Reunión Nacional sobre Caprinocultura 432 

Evaluation rates of ovulation and pregnancy in Toggemburg goats after hormonal treatment with synthetic progesterone 12, 9 and 6 days.

http://www.alice.cnptia.embrapa.br/alice/bitstream/doc/533892/1/racEvaluationrates.pdf

Evaluation rates of ovulation and pregnancy in Toggemburg goats after hormonal treatment with synthetic progesterone 12, 9 and 6 days.

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