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| Baruselli,Pietro Sampaio; Marques,Márcio de Oliveira; Carvalho,Nelcio Antonio Tonizza de; Berber,Rodolfo Cassimiro de Araújo; Valentim,Renato; Carvalho Filho,Ademário Fernandes de; Costa Neto,Waldyr Pinto. |
| Objetivou-se avaliar a eficiência da sincronização da ovulação para inovulação em tempo fixo em novilhas Bos taurus indicus x Bos taurus taurus receptoras de embrião. No Experimento 1, a dinâmica folicular foi acompanhada durante o protocolo "Ovsynch" (G1; n=35) e após a aplicação de PGF2alfa (G2; n=34). No Experimento 2, os mesmos tratamentos foram realizados a campo em 168 (G1) e 177 (G2) novilhas. No D6, colheu-se sangue para dosagem de P4 e se realizaram exames ultra-sonográficos. No D7, realizou-se a inovulação. No Experimento 1, 45,7% dos animais ovularam após o 1º GnRH (P<0,05) e 74,3% após o 2º. A taxa de ovulação foi de 58,8% no G2. Foram detectadas em estro 64,7% das novilhas no G2 e 22,9% no Gl (P<0,01). No Experimento 2, observaram-se... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Progesterona; Taxa de prenhez; Receptora de embrião; Bovino; Corpo lúteo. |
| Ano: 2003 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-95962003000800003 |
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| Baruselli,Pietro Sampaio; Madureira,Ed Hoffman; Barnabe,Valquíria Hippollito; Barnabe,Renato Campanarut; Berber,Rodolfo Cassimiro de Araújo. |
| The objective of this study was to evaluate the efficiency of synchronization ovulation protocol (GnRH/PGF2alpha/GnRH) for fixed timed insemination in buffalo. In Experiment 1, thirty-three female buffaloes with 60 days postpartum, were divided in two groups for evaluation of the follicular dynamics (Group 1, n = 16, 10mg of GnRH/15mg of PGF2alpha/10mg of GnRH; Group 2, n = 17, 20mg of GnRH/15mg of PGF2alpha/10mg of GnRH). Ultrasonography exams were performed every 12 hours to verify the ovarian response to the first GnRH injection. Another evaluations were performed on PGF2a injection and second GnRH injection. After last hormonal injection, ultrasonography exams were performed every 6 hours to verify the moment of the ovulation. Blood samples were... |
| Tipo: Info:eu-repo/semantics/report |
Palavras-chave: Synchronization of ovulation; GnRH; Buffalo; Ovsynch. |
| Ano: 2003 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-95962003000600007 |
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| Baruselli,Pietro Sampaio; Berber,Rodolfo Cassimiro de Araújo; Madureira,Ed Hoffman; Carvalho,Nelcio Antonio Tonizza de. |
| The objective of this study was to evaluate the efficiency of half dose of PGF2alpha in the synchronization of ovulation protocol (GnRH/PGF2alpha/GnRH) for fixed-time artificial insemination in buffalo. Two hundred and sixty two buffaloes (³40 days postpartum) were divided in 2 groups (Group 1, n = 125, GnRH/ ½ dose de PGF2alpha/GnRH; Control Group, n = 137, GnRH/PGF2alpha/GnRH). Animals in Group 1 received 25mg of GnRH IM (Lecirelin, Gestran-plus®) and, seven days later, half dose of PGF2alpha IM (75mg d-cloprostenol, Preloban®). Two days after PGF2alpha injection, all animals received 25mg of GnRH IM (Lecirelin). Animals in Control Group received the same treatment, except for the dose of PGF2alpha(150mg, IM, d-cloprostenol, Preloban®). All animals were... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Synchronization of ovulation; Dinoprost; Buffalo. |
| Ano: 2003 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-95962003000600002 |
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