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 | Acesso ao texto completo restrito à biblioteca da Embrapa Caprinos e Ovinos. Para informações adicionais entre em contato com cnpc.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
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Data corrente: |
09/04/2010 |
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Data da última atualização: |
25/09/2019 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
Internacional - A |
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Autoria: |
FONSECA, J. F. da; TORRES, C. A. A. |
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Afiliação: |
JEFERSON FERREIRA DA FONSECA, CNPC; UFV, Viçosa, MG. |
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Título: |
Administration of hCG 5 days after breeding and reproductive performance in nulliparous dairy goats. |
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Ano de publicação: |
2005 |
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Fonte/Imprenta: |
Reproduction in Domestic Animals, v. 40, n. 6, p. 495-499, 2005. |
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DOI: |
10.1111/j.1439-0531.2005.00612.x |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract: The objective of this study was to investigate the effect of hCG administration 5 days after breeding on plasma progesterone (P4) concentration and reproductive performance of oestrousinduced nulliparous dairy goats. A total of 59 nulliparous goats (36 Alpine and 23 Saanen) received intravaginal sponges with 60 mg medroxyprogesterone acetate for 9 days plus 200 IU equine chorionic gonadotrophin (eCG) and 22.5 lg d-cloprostenol 24 h before sponge removal. After detection of oestrus (day of oestrus ¼ day 0) and breeding, 49 females were randomly assigned, according to the breed, into two treatments (T1 and T2). In T1 (n ¼ 25) and T2 (n ¼ 24), animals received intramuscular injection of 1 ml of saline solution (control) or 250 IU hCG, respectively, 5 days after breeding. Plasma P4 concentration (ng/ml) was determined from blood sampled on days 0, 5, 7, 13, 17, 21, 28 and 45 after breeding. Animals were scanned by transrectal ultrasound (5 MHz probe) on days 35 and 70 after breeding for detection of pregnancy. Plasma P4 concentration did not differ (p > 0.05) between treatments in all days, but it was increased (p < 0.05) in Saanen than in Alpine goats from days 13 to 45. Pregnancy and parturition rates, litter size and gestation period were similar (p > 0.05) to treatments and breeds. Results of this study indicate that human chorionic gonadotrophin (hCG) administration 5 days after breeding did not significantly alter reproductive performance in dairy nulliparous goats and that plasma P4 differed between Saanen and Alpine goats. MenosAbstract: The objective of this study was to investigate the effect of hCG administration 5 days after breeding on plasma progesterone (P4) concentration and reproductive performance of oestrousinduced nulliparous dairy goats. A total of 59 nulliparous goats (36 Alpine and 23 Saanen) received intravaginal sponges with 60 mg medroxyprogesterone acetate for 9 days plus 200 IU equine chorionic gonadotrophin (eCG) and 22.5 lg d-cloprostenol 24 h before sponge removal. After detection of oestrus (day of oestrus ¼ day 0) and breeding, 49 females were randomly assigned, according to the breed, into two treatments (T1 and T2). In T1 (n ¼ 25) and T2 (n ¼ 24), animals received intramuscular injection of 1 ml of saline solution (control) or 250 IU hCG, respectively, 5 days after breeding. Plasma P4 concentration (ng/ml) was determined from blood sampled on days 0, 5, 7, 13, 17, 21, 28 and 45 after breeding. Animals were scanned by transrectal ultrasound (5 MHz probe) on days 35 and 70 after breeding for detection of pregnancy. Plasma P4 concentration did not differ (p > 0.05) between treatments in all days, but it was increased (p < 0.05) in Saanen than in Alpine goats from days 13 to 45. Pregnancy and parturition rates, litter size and gestation period were similar (p > 0.05) to treatments and breeds. Results of this study indicate that human chorionic gonadotrophin (hCG) administration 5 days after breeding did not significantly alter reproductive performance in dairy nulliparous goa... Mostrar Tudo |
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Palavras-Chave: |
Brasil; Caprino leiteiro; Estro; Goat; Gonadotropin; HCG; Induction; Oestrous cycle; Plasma progesterone concentration; Progestagen. |
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Thesagro: |
Cabra; Ciclo estral; Eficiência reprodutiva; Endocrinologia; Indução; Progesterona; Reprodução animal. |
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Thesaurus NAL: |
Animal reproduction; Brazil; Corpus luteum; Estrous cycle; Estrus synchronization. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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Marc: |
LEADER 02727naa a2200409 a 4500
001 1663699
005 2019-09-25
008 2005 bl uuuu u00u1 u #d
024 7 $a10.1111/j.1439-0531.2005.00612.x$2DOI
100 1 $aFONSECA, J. F. da
245 $aAdministration of hCG 5 days after breeding and reproductive performance in nulliparous dairy goats.$h[electronic resource]
260 $c2005
520 $aAbstract: The objective of this study was to investigate the effect of hCG administration 5 days after breeding on plasma progesterone (P4) concentration and reproductive performance of oestrousinduced nulliparous dairy goats. A total of 59 nulliparous goats (36 Alpine and 23 Saanen) received intravaginal sponges with 60 mg medroxyprogesterone acetate for 9 days plus 200 IU equine chorionic gonadotrophin (eCG) and 22.5 lg d-cloprostenol 24 h before sponge removal. After detection of oestrus (day of oestrus ¼ day 0) and breeding, 49 females were randomly assigned, according to the breed, into two treatments (T1 and T2). In T1 (n ¼ 25) and T2 (n ¼ 24), animals received intramuscular injection of 1 ml of saline solution (control) or 250 IU hCG, respectively, 5 days after breeding. Plasma P4 concentration (ng/ml) was determined from blood sampled on days 0, 5, 7, 13, 17, 21, 28 and 45 after breeding. Animals were scanned by transrectal ultrasound (5 MHz probe) on days 35 and 70 after breeding for detection of pregnancy. Plasma P4 concentration did not differ (p > 0.05) between treatments in all days, but it was increased (p < 0.05) in Saanen than in Alpine goats from days 13 to 45. Pregnancy and parturition rates, litter size and gestation period were similar (p > 0.05) to treatments and breeds. Results of this study indicate that human chorionic gonadotrophin (hCG) administration 5 days after breeding did not significantly alter reproductive performance in dairy nulliparous goats and that plasma P4 differed between Saanen and Alpine goats.
650 $aAnimal reproduction
650 $aBrazil
650 $aCorpus luteum
650 $aEstrous cycle
650 $aEstrus synchronization
650 $aCabra
650 $aCiclo estral
650 $aEficiência reprodutiva
650 $aEndocrinologia
650 $aIndução
650 $aProgesterona
650 $aReprodução animal
653 $aBrasil
653 $aCaprino leiteiro
653 $aEstro
653 $aGoat
653 $aGonadotropin
653 $aHCG
653 $aInduction
653 $aOestrous cycle
653 $aPlasma progesterone concentration
653 $aProgestagen
700 1 $aTORRES, C. A. A.
773 $tReproduction in Domestic Animals$gv. 40, n. 6, p. 495-499, 2005.
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