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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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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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Carvalho,Nelcio Antonio Tonizza de; Carvalho,Júlia Gleyci Soares de; Sales,José Nélio de Sousa; Macari,Rodrigo Caron; Baruselli,Pietro Sampaio. |
ABSTRACT: The aim of this study was to evaluate different times for timed artificial insemination (TAI) in buffalo submitted to a P4/E2/eCG-based protocol. In this study, 204 buffaloes were distributed into one of two groups (TAI56, n=103 and TAI64, n=101). At a random stage of the oestrous cycle (Day 0 = D0), in the morning (TAI56, a.m.) or afternoon (TAI64, p.m.), buffaloes received an intravaginal progesterone device (P4; 1.0 g) plus EB (2.0 mg i.m.). On D9 a.m. (TAI56) or p.m. (TAI64), the P4 was removed and buffaloes received PGF2a (0.53 mg i.m. sodium cloprostenol) and eCG (400 IU i.m.). On D10 a.m. (TAI56) or p.m. (TAI64), 24 h after P4 removal, buffaloes were treated with EB (1.0 mg i.m.). Buffaloes from TAI56 and TAI64 were inseminated 56 and 64 h... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Anoestrous; Artificial insemination; Oestradiol benzoate; Follicle; Induction of ovulation. |
Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782020000400701 |
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