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García Melín, Agustín Toribio - One of the best experts on this subject based on the ideXlab platform.

  • Evaluación de la eficiencia de un protocolo de inseminación artificial a tiempo fijo aplicado al ganado bovino de carne perteneciente a la agricultura familiar campesina de la Provincia de Melipilla
    'Universidad de Chile', 2015
    Co-Authors: García Melín, Agustín Toribio
    Abstract:

    Memoria para optar al Título Profesional de Médico VeterinarioEl Programa de Mejoramiento Genético del Instituto de Desarrollo Agropecuario (INDAP) busca mejorar la productividad, incrementar la masa ganadera y favorecer la inserción en la cadena comercializadora de los productores de la agricultura familiar campesina (AFC). El objetivo del presente estudio fue evaluar la eficiencia reproductiva de un protocolo de inseminación artificial a tiempo fijo (IATF) aplicado al rebaño bovino de carne perteneciente a la AFC de la provincia de Melipilla. El protocolo de sincronización de celo consistió en la administración i.m. de 2 mg de benzoato de Estradiol más la aplicación de un dispositivo intravaginal bovino (DIB) de 0,5 gr de progesterona (día 0). Posteriormente, se retiró el DIB y se administró vía i.m. 1 mg de cipionato de Estradiol y 500 μg de cloprostenol sódico (día 8). La IATF se realizó 52 a 56 horas después de retirado el DIB. El diagnóstico de gestación fue realizado por ultrasonografía transrectal a los 50 días después de la IA. El porcentaje de preñez promedio obtenido con el protocolo fue de un 54%. Vacas en condición corporal (CC) > 3 (escala 1 a 5) al inicio del protocolo tuvieron mayor probabilidad de preñez (OR=3,52) que animales en CC 6 años de edad mostraron tener mayor probabilidad de preñez (OR=2,49) que vacas 3 permitiría aumentar la tasa de preñez del protocolo de IATF en la AFC de Melipilla.The Genetic Improvement Program of the Agricultural Development Institute aims to improve productivity, increase cattle population and insert small beef producers in the livestock market. In this context, the objective of the present study was to evaluate the reproductive efficiency of a fixed-time artificial insemination (FTAI) protocol applied to a beef herd of small producers of the Province of Melipilla. The FTAI-protocol consisted in the i.m. injection of 2 mg of Estradiol benzoate and the application of an Intravaginal Bovine Device (DIB, 0.5 gr of progesterone) at day 0. At day 8 the DIB was removed and i.m. injections of 1 mg of Estradiol Cipionate and 500 μg of sodium cloprostenol were administered. FTAI was performed 52 to 56 hours after DIB removal. Pregnancy diagnosis was performed by trans-rectal ultrasonography at day 50 after FTAI. The overall pregnancy rate for the FTAI-protocol was 54%. Cows with body condition score (BCS) > 3 (scale 1 to 5) at the beginning of the FTAI-protocol had higher probability of pregnancy (OR=3.52) compared to cows with BCS 6 years had higher probability of pregnancy (OR=2.49) compared to cows 3 at the beginning of the FTAI-protocol may increase the probability of pregnancy in beef herds owned by small producers of the Province of Melipilla, Chile

  • Evaluación de la eficiencia de un protocolo de inseminación artificial a tiempo fijo aplicado al ganado bovino de carne perteneciente a la agricultura familiar campesina de la Provincia de Melipilla
    Universidad de Chile, 2015
    Co-Authors: García Melín, Agustín Toribio
    Abstract:

    Memoria para optar al Título Profesional de Médico VeterinarioEl Programa de Mejoramiento Genético del Instituto de Desarrollo Agropecuario (INDAP) busca mejorar la productividad, incrementar la masa ganadera y favorecer la inserción en la cadena comercializadora de los productores de la agricultura familiar campesina (AFC). El objetivo del presente estudio fue evaluar la eficiencia reproductiva de un protocolo de inseminación artificial a tiempo fijo (IATF) aplicado al rebaño bovino de carne perteneciente a la AFC de la provincia de Melipilla. El protocolo de sincronización de celo consistió en la administración i.m. de 2 mg de benzoato de Estradiol más la aplicación de un dispositivo intravaginal bovino (DIB) de 0,5 gr de progesterona (día 0). Posteriormente, se retiró el DIB y se administró vía i.m. 1 mg de cipionato de Estradiol y 500 μg de cloprostenol sódico (día 8). La IATF se realizó 52 a 56 horas después de retirado el DIB. El diagnóstico de gestación fue realizado por ultrasonografía transrectal a los 50 días después de la IA. El porcentaje de preñez promedio obtenido con el protocolo fue de un 54%. Vacas en condición corporal (CC) > 3 (escala 1 a 5) al inicio del protocolo tuvieron mayor probabilidad de preñez (OR=3,52) que animales en CC < 2,75 (p=0,01). Por otra parte, vacas > 6 años de edad mostraron tener mayor probabilidad de preñez (OR=2,49) que vacas < 4 años de edad (p=0,04). En conclusión, la selección de animales maduros en CC > 3 permitiría aumentar la tasa de preñez del protocolo de IATF en la AFC de Melipilla.The Genetic Improvement Program of the Agricultural Development Institute aims to improve productivity, increase cattle population and insert small beef producers in the livestock market. In this context, the objective of the present study was to evaluate the reproductive efficiency of a fixed-time artificial insemination (FTAI) protocol applied to a beef herd of small producers of the Province of Melipilla. The FTAI-protocol consisted in the i.m. injection of 2 mg of Estradiol benzoate and the application of an Intravaginal Bovine Device (DIB, 0.5 gr of progesterone) at day 0. At day 8 the DIB was removed and i.m. injections of 1 mg of Estradiol Cipionate and 500 μg of sodium cloprostenol were administered. FTAI was performed 52 to 56 hours after DIB removal. Pregnancy diagnosis was performed by trans-rectal ultrasonography at day 50 after FTAI. The overall pregnancy rate for the FTAI-protocol was 54%. Cows with body condition score (BCS) > 3 (scale 1 to 5) at the beginning of the FTAI-protocol had higher probability of pregnancy (OR=3.52) compared to cows with BCS < 2.75 (p=0.01). Moreover, cows > 6 years had higher probability of pregnancy (OR=2.49) compared to cows < 4 years old (p=0.04). In conclusion, inclusion of mature cows in BCS > 3 at the beginning of the FTAI-protocol may increase the probability of pregnancy in beef herds owned by small producers of the Province of Melipilla, Chile

Meneghetti Mauro - One of the best experts on this subject based on the ideXlab platform.

  • Mês de parição, condição corporal e resposta a protocolos de inseminação artificial em tempo fixo em vacas de corte primíparas
    Universidade Estadual Paulista (UNESP), 2006
    Co-Authors: Meneghetti Mauro
    Abstract:

    O objetivo deste estudo foi avaliar o efeito do mês de parição na condição corporal (CC) no início de estação de monta e na resposta a dois protocolos de inseminação artificial em tempo fixo (IATF) em vacas primíparas de corte. No experimento I (exp. I) foi avaliado a alteração da CC pré e pós-parto em 87 novilhas Nelore e 68 u sangue Red Angus, inseminadas para parir de Setembro a Dezembro. A CC foi avaliada mensalmente no pré e pós-parto de Junho a Fevereiro. No exp. II as 155 vacas do exp. I foram sincronizadas entre 29 e 129 dias pós-parto (DPP), com o protocolo: remoção dos bezerros (RB) por 48 h antes do primeiro GnRH (100 mcg, Fertagyl®, INTERVET) e foi inserido dispositivo intravaginal de progesterona (CIDR®, Pfizer, 1,9 g). Após 6,5 dias, foi feita nova RB por 46h; o CIDR® foi removido; e foi aplicado prostaglandina 2 (PGF2 ) (25 mg, Lutalyse®, Pfizer). Entre 42 e 46h após a PGF2 as vacas receberam nova aplicação de GnRH e foram inseminadas. No exp. III, 538 primíparas de duas fazendas (60 Nelore e 123 u sangue Red Angus na fazenda 1 e 355 Nelore na fazenda 2), entre 33 e 104 DPP foram sincronizadas com o protocolo: inserção do CIDR® junto à de Benzoato de Estradiol (2,0 mg, Estrogin®, Farmavet), No dia 7 foi aplicado PGF2 (12,5 mg, Lutalyse®, Pfizer). No dia 9 foi retirado o CIDR®, foi feita RB e aplicado 0,5 mg de Cipionato de Estradiol (E.C.P.®, Pfizer). A IATF foi realizada 46 a 52 h após a retirada do CIDR®. A taxa de sincronização foi avaliada (exceto na fazenda 2 do exp. III) por dois exames de ultra-som (Aloka SSD-500, 5,0 MHz) e determinada pela presença e ausência de folículo dominante na IATF e 48 h após. O diagnóstico de gestação foi feito por ultra-som 28 dias após a IATF. A análise estatística do exp. I foi feita no PROC MIXED e dos exp. II e III no PROC LOGISTIC do SAS...The aim of this study was to evaluate the calving date effect on body condition score (BCS) at the beginning of breeding season and on the response to a two timed artificial insemination (TAI) protocols in first-calf beef heifers. In experiment I (exp. I) was evaluated the BCS change pre and post-partum. Eighty seven Nelore heifers and 68 u blood Red Angus were inseminated to calve from September to December. The BCS were monthly measured from June to February, during the pre and post-partum of these animals. In exp. II, the cows from exp. I were TAI when they were between 29 and 129 days post-partum (DPP) with the protocol: calf removal (CR) for 48 h before the first GnRH (100 mcg, Fertagyl®, INTERVET) and an insertion of an intravaginal progesterone device (1.9 g, CIDR®, Pfizer). After 6,5 days a new CR was performed, the CIDR® was removed and was injected prostaglandin F2? (PGF2?) (25 mg, Lutalyse®, Pfizer). Between 42 and 46 h after PGF2? was injected a new GnRH and cows were TAI. In exp. III, 538 primiparous cows from two herds (60 Nelore and 123 u blood Red Angus from farm 1 and 355 Nelore from farm 2), between 33 and 104 DPP were synchronized with the protocol: day 0, insertion of a CIDR® and a injection of 2.0 mg of Estradiol benzoate (Estrogin®, Farmavet), on day 7 was injected PgF2? (12.5 mg, Lutalyse®, Pfizer), in the CIDR® withdraw (Day 9) was injected Estradiol Cipionate (0.5 mg, E.C.P.®, Pfizer) and a CR was done, the TAI was preformed 46 to 52 hours after the device withdraw. In the TAI moment and 48 hours later a ultrasound scan (Aloka SSD-500, 5.0 MHz) was performed to determine the ovulation rate (except in the farm 2 of exp. 3). The pregnancy diagnosis was made by ultrasound 28 days after the TAI. The statistic analysis in exp. I was performed with PROC MIXED and in exp.II and III with PROC LOGISTIC from SAS... (Complete abstract click electronic access below)Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP

Prosperi C.p. - One of the best experts on this subject based on the ideXlab platform.

  • Use of human chorionic gonadodrophin and Estradiol Cipionate plus controlled internal drug release for synchronization of ovulation in Saanen goats
    Universidade Federal de Minas Gerais (UFMG) Escola de Veterinária, 2005
    Co-Authors: Maffili V.v., Torres C.a.a., Pontes, R.a.m. [unesp], Guimarães J.d., Prosperi C.p.
    Abstract:

    Dezesseis cabras nulíparas da raça Saanen foram distribuídas em dois grupos de tratamentos (T1 e T2) para sincronização da ovulação. Inicialmente, ambos os tratamento consistiram na aplicação concomitante do dispositivo de liberação controlada de drogas (CIDR-G®), de 5mg de dinoprost e de 1mg de cipionato de Estradiol (CE) (dia 0). No quarto dia aplicaram-se 250UI de eCG e no quinto dia retirou-se o CIDR-G®. As cabras do T1 (n=8) receberam 1mg de CE 24 horas depois da retirada do CIDR-G® e as do T2 (n=8) receberam 250UI de hCG 30 horas após. Sete cabras do T1 e oito do T2 entraram em estro depois da retirada do CIDR-G®. Cabras que receberam hCG permaneceram em estro por 42,0± 6,9 horas e as que receberam CE por 45,0± 5,5 horas (P>0,05). As características ovulatórias não foram influenciadas pelos tratamentos. O intervalo da retirada do CIDR-G® à ovulação para ambos os protocolos de sincronização da ovulação não diferiu (P>0,05) entre tratamentos. As ovulações promovidas pelo CE ocorreram em menor intervalo de tempo.Saanen nuliparous female goats were distributed in two experimental groups of eight animals each to synchronize the ovulation. on day zero, all animals were treated with controlled internal drug release (CIDR-G®), dinoprost (5mg) and Estradiol Cipionate (EC; 1mg). on day 4, all animals were treated with eCG (250IU), and on day 5 the CIDR-G® was removed. Group 1 (T1) received 1mg of EC and Group 2 (T2) received 250IU of hCG, 24 and 30 hours after CIDR-G® removal, respectively. Onset of estrus was observed in 7 and 8 goats of T1 and T2 groups, respectively. hCG treated goats remained in estrus for 42±6.9 hours, whereas EC-treated goats remained in estrus for 45±5.5 hours (P>0.05). None of the studied ovulatory characteristics were affected by treatments. The intervals between CIDR-G® removal and ovulation in T1 and T2 groups were similar. Both hCG and EC were equally efficient on inducing ovulation synchronically

  • Utilização de gonadotrofina coriônica humana e cipionato de Estradiol associado ao dispositivo de liberação controlada de drogas para sincronização de ovulação em cabras da raça Saanen
    Universidade Federal de Minas Gerais (UFMG) Escola de Veterinária, 2005
    Co-Authors: Maffili V.v., Torres C.a.a., Guimarães J.d., Pontes R.a.m., Prosperi C.p.
    Abstract:

    Dezesseis cabras nulíparas da raça Saanen foram distribuídas em dois grupos de tratamentos (T1 e T2) para sincronização da ovulação. Inicialmente, ambos os tratamento consistiram na aplicação concomitante do dispositivo de liberação controlada de drogas (CIDR-G®), de 5mg de dinoprost e de 1mg de cipionato de Estradiol (CE) (dia 0). No quarto dia aplicaram-se 250UI de eCG e no quinto dia retirou-se o CIDR-G®. As cabras do T1 (n=8) receberam 1mg de CE 24 horas depois da retirada do CIDR-G® e as do T2 (n=8) receberam 250UI de hCG 30 horas após. Sete cabras do T1 e oito do T2 entraram em estro depois da retirada do CIDR-G®. Cabras que receberam hCG permaneceram em estro por 42,0± 6,9 horas e as que receberam CE por 45,0± 5,5 horas (P>0,05). As características ovulatórias não foram influenciadas pelos tratamentos. O intervalo da retirada do CIDR-G® à ovulação para ambos os protocolos de sincronização da ovulação não diferiu (P>0,05) entre tratamentos. As ovulações promovidas pelo CE ocorreram em menor intervalo de tempo.Saanen nuliparous female goats were distributed in two experimental groups of eight animals each to synchronize the ovulation. on day zero, all animals were treated with controlled internal drug release (CIDR-G®), dinoprost (5mg) and Estradiol Cipionate (EC; 1mg). on day 4, all animals were treated with eCG (250IU), and on day 5 the CIDR-G® was removed. Group 1 (T1) received 1mg of EC and Group 2 (T2) received 250IU of hCG, 24 and 30 hours after CIDR-G® removal, respectively. Onset of estrus was observed in 7 and 8 goats of T1 and T2 groups, respectively. hCG treated goats remained in estrus for 42±6.9 hours, whereas EC-treated goats remained in estrus for 45±5.5 hours (P>0.05). None of the studied ovulatory characteristics were affected by treatments. The intervals between CIDR-G® removal and ovulation in T1 and T2 groups were similar. Both hCG and EC were equally efficient on inducing ovulation synchronically

Meneghetti, Mauro [unesp] - One of the best experts on this subject based on the ideXlab platform.

  • Mês de parição, condição corporal e resposta a protocolos de inseminação artificial em tempo fixo em vacas de corte primíparas
    Universidade Estadual Paulista (UNESP), 2006
    Co-Authors: Meneghetti, Mauro [unesp]
    Abstract:

    O objetivo deste estudo foi avaliar o efeito do mês de parição na condição corporal (CC) no início de estação de monta e na resposta a dois protocolos de inseminação artificial em tempo fixo (IATF) em vacas primíparas de corte. No experimento I (exp. I) foi avaliado a alteração da CC pré e pós-parto em 87 novilhas Nelore e 68 u sangue Red Angus, inseminadas para parir de Setembro a Dezembro. A CC foi avaliada mensalmente no pré e pós-parto de Junho a Fevereiro. No exp. II as 155 vacas do exp. I foram sincronizadas entre 29 e 129 dias pós-parto (DPP), com o protocolo: remoção dos bezerros (RB) por 48 h antes do primeiro GnRH (100 mcg, Fertagyl®, INTERVET) e foi inserido dispositivo intravaginal de progesterona (CIDR®, Pfizer, 1,9 g). Após 6,5 dias, foi feita nova RB por 46h; o CIDR® foi removido; e foi aplicado prostaglandina 2 (PGF2 ) (25 mg, Lutalyse®, Pfizer). Entre 42 e 46h após a PGF2 as vacas receberam nova aplicação de GnRH e foram inseminadas. No exp. III, 538 primíparas de duas fazendas (60 Nelore e 123 u sangue Red Angus na fazenda 1 e 355 Nelore na fazenda 2), entre 33 e 104 DPP foram sincronizadas com o protocolo: inserção do CIDR® junto à de Benzoato de Estradiol (2,0 mg, Estrogin®, Farmavet), No dia 7 foi aplicado PGF2 (12,5 mg, Lutalyse®, Pfizer). No dia 9 foi retirado o CIDR®, foi feita RB e aplicado 0,5 mg de Cipionato de Estradiol (E.C.P.®, Pfizer). A IATF foi realizada 46 a 52 h após a retirada do CIDR®. A taxa de sincronização foi avaliada (exceto na fazenda 2 do exp. III) por dois exames de ultra-som (Aloka SSD-500, 5,0 MHz) e determinada pela presença e ausência de folículo dominante na IATF e 48 h após. O diagnóstico de gestação foi feito por ultra-som 28 dias após a IATF. A análise estatística do exp. I foi feita no PROC MIXED e dos exp. II e III no PROC LOGISTIC do SAS...The aim of this study was to evaluate the calving date effect on body condition score (BCS) at the beginning of breeding season and on the response to a two timed artificial insemination (TAI) protocols in first-calf beef heifers. In experiment I (exp. I) was evaluated the BCS change pre and post-partum. Eighty seven Nelore heifers and 68 u blood Red Angus were inseminated to calve from September to December. The BCS were monthly measured from June to February, during the pre and post-partum of these animals. In exp. II, the cows from exp. I were TAI when they were between 29 and 129 days post-partum (DPP) with the protocol: calf removal (CR) for 48 h before the first GnRH (100 mcg, Fertagyl®, INTERVET) and an insertion of an intravaginal progesterone device (1.9 g, CIDR®, Pfizer). After 6,5 days a new CR was performed, the CIDR® was removed and was injected prostaglandin F2? (PGF2?) (25 mg, Lutalyse®, Pfizer). Between 42 and 46 h after PGF2? was injected a new GnRH and cows were TAI. In exp. III, 538 primiparous cows from two herds (60 Nelore and 123 u blood Red Angus from farm 1 and 355 Nelore from farm 2), between 33 and 104 DPP were synchronized with the protocol: day 0, insertion of a CIDR® and a injection of 2.0 mg of Estradiol benzoate (Estrogin®, Farmavet), on day 7 was injected PgF2? (12.5 mg, Lutalyse®, Pfizer), in the CIDR® withdraw (Day 9) was injected Estradiol Cipionate (0.5 mg, E.C.P.®, Pfizer) and a CR was done, the TAI was preformed 46 to 52 hours after the device withdraw. In the TAI moment and 48 hours later a ultrasound scan (Aloka SSD-500, 5.0 MHz) was performed to determine the ovulation rate (except in the farm 2 of exp. 3). The pregnancy diagnosis was made by ultrasound 28 days after the TAI. The statistic analysis in exp. I was performed with PROC MIXED and in exp.II and III with PROC LOGISTIC from SAS... (Complete abstract click electronic access below

Maffili V.v. - One of the best experts on this subject based on the ideXlab platform.

  • Use of human chorionic gonadodrophin and Estradiol Cipionate plus controlled internal drug release for synchronization of ovulation in Saanen goats
    Universidade Federal de Minas Gerais (UFMG) Escola de Veterinária, 2005
    Co-Authors: Maffili V.v., Torres C.a.a., Pontes, R.a.m. [unesp], Guimarães J.d., Prosperi C.p.
    Abstract:

    Dezesseis cabras nulíparas da raça Saanen foram distribuídas em dois grupos de tratamentos (T1 e T2) para sincronização da ovulação. Inicialmente, ambos os tratamento consistiram na aplicação concomitante do dispositivo de liberação controlada de drogas (CIDR-G®), de 5mg de dinoprost e de 1mg de cipionato de Estradiol (CE) (dia 0). No quarto dia aplicaram-se 250UI de eCG e no quinto dia retirou-se o CIDR-G®. As cabras do T1 (n=8) receberam 1mg de CE 24 horas depois da retirada do CIDR-G® e as do T2 (n=8) receberam 250UI de hCG 30 horas após. Sete cabras do T1 e oito do T2 entraram em estro depois da retirada do CIDR-G®. Cabras que receberam hCG permaneceram em estro por 42,0± 6,9 horas e as que receberam CE por 45,0± 5,5 horas (P>0,05). As características ovulatórias não foram influenciadas pelos tratamentos. O intervalo da retirada do CIDR-G® à ovulação para ambos os protocolos de sincronização da ovulação não diferiu (P>0,05) entre tratamentos. As ovulações promovidas pelo CE ocorreram em menor intervalo de tempo.Saanen nuliparous female goats were distributed in two experimental groups of eight animals each to synchronize the ovulation. on day zero, all animals were treated with controlled internal drug release (CIDR-G®), dinoprost (5mg) and Estradiol Cipionate (EC; 1mg). on day 4, all animals were treated with eCG (250IU), and on day 5 the CIDR-G® was removed. Group 1 (T1) received 1mg of EC and Group 2 (T2) received 250IU of hCG, 24 and 30 hours after CIDR-G® removal, respectively. Onset of estrus was observed in 7 and 8 goats of T1 and T2 groups, respectively. hCG treated goats remained in estrus for 42±6.9 hours, whereas EC-treated goats remained in estrus for 45±5.5 hours (P>0.05). None of the studied ovulatory characteristics were affected by treatments. The intervals between CIDR-G® removal and ovulation in T1 and T2 groups were similar. Both hCG and EC were equally efficient on inducing ovulation synchronically

  • Utilização de gonadotrofina coriônica humana e cipionato de Estradiol associado ao dispositivo de liberação controlada de drogas para sincronização de ovulação em cabras da raça Saanen
    Universidade Federal de Minas Gerais (UFMG) Escola de Veterinária, 2005
    Co-Authors: Maffili V.v., Torres C.a.a., Guimarães J.d., Pontes R.a.m., Prosperi C.p.
    Abstract:

    Dezesseis cabras nulíparas da raça Saanen foram distribuídas em dois grupos de tratamentos (T1 e T2) para sincronização da ovulação. Inicialmente, ambos os tratamento consistiram na aplicação concomitante do dispositivo de liberação controlada de drogas (CIDR-G®), de 5mg de dinoprost e de 1mg de cipionato de Estradiol (CE) (dia 0). No quarto dia aplicaram-se 250UI de eCG e no quinto dia retirou-se o CIDR-G®. As cabras do T1 (n=8) receberam 1mg de CE 24 horas depois da retirada do CIDR-G® e as do T2 (n=8) receberam 250UI de hCG 30 horas após. Sete cabras do T1 e oito do T2 entraram em estro depois da retirada do CIDR-G®. Cabras que receberam hCG permaneceram em estro por 42,0± 6,9 horas e as que receberam CE por 45,0± 5,5 horas (P>0,05). As características ovulatórias não foram influenciadas pelos tratamentos. O intervalo da retirada do CIDR-G® à ovulação para ambos os protocolos de sincronização da ovulação não diferiu (P>0,05) entre tratamentos. As ovulações promovidas pelo CE ocorreram em menor intervalo de tempo.Saanen nuliparous female goats were distributed in two experimental groups of eight animals each to synchronize the ovulation. on day zero, all animals were treated with controlled internal drug release (CIDR-G®), dinoprost (5mg) and Estradiol Cipionate (EC; 1mg). on day 4, all animals were treated with eCG (250IU), and on day 5 the CIDR-G® was removed. Group 1 (T1) received 1mg of EC and Group 2 (T2) received 250IU of hCG, 24 and 30 hours after CIDR-G® removal, respectively. Onset of estrus was observed in 7 and 8 goats of T1 and T2 groups, respectively. hCG treated goats remained in estrus for 42±6.9 hours, whereas EC-treated goats remained in estrus for 45±5.5 hours (P>0.05). None of the studied ovulatory characteristics were affected by treatments. The intervals between CIDR-G® removal and ovulation in T1 and T2 groups were similar. Both hCG and EC were equally efficient on inducing ovulation synchronically