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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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| Ambrose,Divakar Justus; Colazo,Marcos Germán; Kastelic,John Patrick. |
| Fertility of dairy cattle is generally decreasing. Overall estrus detection efficiency in lactating dairy cattle is low, as expression of estrus is often compromised. Consequently, undetected estrus, low AI-submission rates, and long inter-breeding intervals are the main contributors to poor reproductive efficiency. Although failure to become pregnant is the most common reason for culling dairy cattle, pregnancy rates could be improved by increasing the AI-submission rate through increased estrus detection efficiency, timed insemination (Timed-AI), or timed embryo transfer (Timed-ET). In these protocols, ovarian follicular development and luteolysis are controlled, culminating in synchronous ovulation in most cows. There are several modifications to... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cystic ovaries; Gonadotropin releasing hormone; Porcine luteinizing hormone; Progesterone; Synchronization of ovulation; Ultrasonography. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982010001300042 |
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