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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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| Pinto,Tássia Louregiani Carvalho; Nogueira,Marina Bottrel Reis; Sales,José Nélio de Sousa; Carvalho,Rafaela Rodrigues de; Cushman,Robert Andrew; Souza,José Camisão de. |
| ABSTRACTHigh milk production, heat, physiological status and management impair reproduction in Holstein cows. The use of in vivo-produced embryos has been reported as an alternative to enhance pregnancy outcome in the tropics; however there are several limitations for its production, especially from variations in superovulatory responses. The in vitro production of embryos would avoid such variations, but few studies have been reported. This study aims to verify the effects of variables related to recipients under a program of routine in vitro embryo transfer on a commercial dairy farm in southeastern Brazil. It was hypothesized that pregnancy rates after transfer of ovum pick up or OPUderived embryos (ET) to lactating Holstein recipients may be influenced... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bovine; GnRH agonists; Progesterone. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542015000500498 |
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