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Registro Completo |
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Biblioteca(s): |
Embrapa Caprinos e Ovinos; Embrapa Gado de Leite. |
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Data corrente: |
16/06/2025 |
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Data da última atualização: |
24/06/2025 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
MARTINS, A. L.; CORTES, L. R.; RODRIGUES, J. N. D.; RANGEL, P. S. C.; MAIA, A. L. R. e S.; BRANDAO, F. Z.; SIQUEIRA, L. G. B.; FREITAS, B. W. de; FONSECA, J. F. da. |
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Afiliação: |
ALICE L. MARTINS, UNIVERSIDADE FEDERAL DE VIÇOSA; LUANA R. CORTES, UNIVERSIDADE FEDERAL DE VIÇOSA; JULIANA N. D. RODRIGUES, UNIVERSIDADE FEDERAL RURAL DA AMAZÔNIA; PAULO SERGIO C. RANGEL, UNIVERSIDADE FEDERAL FLUMINENSE; ANA LUCIA R. E S. MAIA, UNIVERSIDADE FEDERAL FLUMINENSE; FELIPE Z. BRANDAO, UNIVERSIDADE FEDERAL FLUMINENSE; LUIZ GUSTAVO BRUNO SIQUEIRA, CNPGL; BRUNA W. DE FREITAS, UNIVERSIDADE FEDERAL DE VIÇOSA; JEFERSON FERREIRA DA FONSECA, CNPC. |
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Título: |
Luteal features and serum concentrations of progesterone and hCG in dairy goats submitted to estrus induction followed by intrauterine or intramuscular hCG administration. |
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Ano de publicação: |
2025 |
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Fonte/Imprenta: |
Domestic Animal Endocrinology, v. 93, e106957, 2025. |
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DOI: |
https://doi.org/10.1016/j.domaniend.2025.106957 |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract - This study evaluated the effect of hCG administration by different routes on D7 (D0=estrus onset) on serum concentrations of hCG and progesterone (P4). Its role in the induction of accessory corpora lutea (aCL), total luteal area (TLA), and vascular area (VA) was assessed by ultrasonography (US). Forty-four goats had estrus induced with intravaginal sponges (60 mg of MAP, six days) plus 200 IU recombinant eCG and 131.5 μg cloprostenol via intramuscular (i.m.) 24 h before sponge removal. Goats received 300 IU hCG either via intrauterine (hCG-IU, n=8) or i.m. (hCG-IM, n=11) or 1 mL of saline i.m. (control, n=12). Estrus was detected and goats were mated with fertile bucks. On D21, goats from hCG-IU and hCG-IM presented more CLs than control ones (P<0.05). The aCL was not detected in the control and differed (P<0.05) between hCG-IU (25.0 %; 2/8) and hCG-IM (63.6 %; 7/11). TLA increased in hCG-IM between D13 and D17 (P<0.05) and VA was higher (P<0.05) in the hCG-IU on D13. On D7, the hCG concentration was similar among groups (P>0.05), however, it increased (P<0.05) on D7.5 in the hCG-IM and remained higher than hCG-IU and control until D8. The concentration of P4 did not differ (P>0.05) among groups. The pregnancy rate did not differ (P>0.05) between hCG-IM (91.0 %) and control (83.0 %) and both were higher (P<0.05) than hCG-IU (25.0 %). In conclusion, despite a slight improvement in luteal perfusion, intrauterine administration of hCG showed limited benefits on the parameters studied, not promoting significant changes in the reproductive tract environment. MenosAbstract - This study evaluated the effect of hCG administration by different routes on D7 (D0=estrus onset) on serum concentrations of hCG and progesterone (P4). Its role in the induction of accessory corpora lutea (aCL), total luteal area (TLA), and vascular area (VA) was assessed by ultrasonography (US). Forty-four goats had estrus induced with intravaginal sponges (60 mg of MAP, six days) plus 200 IU recombinant eCG and 131.5 μg cloprostenol via intramuscular (i.m.) 24 h before sponge removal. Goats received 300 IU hCG either via intrauterine (hCG-IU, n=8) or i.m. (hCG-IM, n=11) or 1 mL of saline i.m. (control, n=12). Estrus was detected and goats were mated with fertile bucks. On D21, goats from hCG-IU and hCG-IM presented more CLs than control ones (P<0.05). The aCL was not detected in the control and differed (P<0.05) between hCG-IU (25.0 %; 2/8) and hCG-IM (63.6 %; 7/11). TLA increased in hCG-IM between D13 and D17 (P<0.05) and VA was higher (P<0.05) in the hCG-IU on D13. On D7, the hCG concentration was similar among groups (P>0.05), however, it increased (P<0.05) on D7.5 in the hCG-IM and remained higher than hCG-IU and control until D8. The concentration of P4 did not differ (P>0.05) among groups. The pregnancy rate did not differ (P>0.05) between hCG-IM (91.0 %) and control (83.0 %) and both were higher (P<0.05) than hCG-IU (25.0 %). In conclusion, despite a slight improvement in luteal perfusion, intrauterine administration of hCG showed limited benefits on the ... Mostrar Tudo |
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Palavras-Chave: |
Assisted reproduction; Endometrial stimulation; Luteal vascularization; Ovarian ultrasonography; Reproductive technology. |
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Thesagro: |
Cabra Leiteira; Caprino; Corpo Lúteo; Reprodução. |
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Thesaurus Nal: |
Corpus luteum; Dairy goats; Embryo transfer; Endocrinology; Hormonal regulation; Human chorionic gonadotropin; Reproduction; Reproductive efficiency. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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Marc: |
LEADER 02999naa a2200433 a 4500
001 2176757
005 2025-06-24
008 2025 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1016/j.domaniend.2025.106957$2DOI
100 1 $aMARTINS, A. L.
245 $aLuteal features and serum concentrations of progesterone and hCG in dairy goats submitted to estrus induction followed by intrauterine or intramuscular hCG administration.$h[electronic resource]
260 $c2025
520 $aAbstract - This study evaluated the effect of hCG administration by different routes on D7 (D0=estrus onset) on serum concentrations of hCG and progesterone (P4). Its role in the induction of accessory corpora lutea (aCL), total luteal area (TLA), and vascular area (VA) was assessed by ultrasonography (US). Forty-four goats had estrus induced with intravaginal sponges (60 mg of MAP, six days) plus 200 IU recombinant eCG and 131.5 μg cloprostenol via intramuscular (i.m.) 24 h before sponge removal. Goats received 300 IU hCG either via intrauterine (hCG-IU, n=8) or i.m. (hCG-IM, n=11) or 1 mL of saline i.m. (control, n=12). Estrus was detected and goats were mated with fertile bucks. On D21, goats from hCG-IU and hCG-IM presented more CLs than control ones (P<0.05). The aCL was not detected in the control and differed (P<0.05) between hCG-IU (25.0 %; 2/8) and hCG-IM (63.6 %; 7/11). TLA increased in hCG-IM between D13 and D17 (P<0.05) and VA was higher (P<0.05) in the hCG-IU on D13. On D7, the hCG concentration was similar among groups (P>0.05), however, it increased (P<0.05) on D7.5 in the hCG-IM and remained higher than hCG-IU and control until D8. The concentration of P4 did not differ (P>0.05) among groups. The pregnancy rate did not differ (P>0.05) between hCG-IM (91.0 %) and control (83.0 %) and both were higher (P<0.05) than hCG-IU (25.0 %). In conclusion, despite a slight improvement in luteal perfusion, intrauterine administration of hCG showed limited benefits on the parameters studied, not promoting significant changes in the reproductive tract environment.
650 $aCorpus luteum
650 $aDairy goats
650 $aEmbryo transfer
650 $aEndocrinology
650 $aHormonal regulation
650 $aHuman chorionic gonadotropin
650 $aReproduction
650 $aReproductive efficiency
650 $aCabra Leiteira
650 $aCaprino
650 $aCorpo Lúteo
650 $aReprodução
653 $aAssisted reproduction
653 $aEndometrial stimulation
653 $aLuteal vascularization
653 $aOvarian ultrasonography
653 $aReproductive technology
700 1 $aCORTES, L. R.
700 1 $aRODRIGUES, J. N. D.
700 1 $aRANGEL, P. S. C.
700 1 $aMAIA, A. L. R. e S.
700 1 $aBRANDAO, F. Z.
700 1 $aSIQUEIRA, L. G. B.
700 1 $aFREITAS, B. W. de
700 1 $aFONSECA, J. F. da
773 $tDomestic Animal Endocrinology$gv. 93, e106957, 2025.
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Registro original: |
Embrapa Gado de Leite (CNPGL) |
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