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Biblioteca(s): |
Embrapa Semiárido. |
Data corrente: |
26/07/2016 |
Data da última atualização: |
23/01/2017 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
NOGUEIRA, D. M.; CAVALIERI, J.; FITZPATRICK, L. A.; GUMMOW, B.; BLACHE, D.; PARKER, A. J. |
Afiliação: |
DANIEL MAIA NOGUEIRA, CPATSA; J. CAVALIERI, College of Public Health, Medical and Veterinary Sciences, James Cook University; L. A. FITZPATRICK, College of Public Health, Medical and Veterinary Sciences, James Cook University; B. GUMMOW, Faculty of Veterinary Science, University of Pretoria, Pretoria, South Africa; D. BLACHE, School of Animal Biology/Institute of Agriculture, University of Western Australia; A. J. PARKER, Department of Animal Science, The Ohio State University, Wooster Ohio, USA. |
Título: |
Effect of hormonal synchronisation and/or short-term supplementation with maize on follicular dynamics and hormone profiles in goats during the non-breeding season. |
Ano de publicação: |
2016 |
Fonte/Imprenta: |
Animal Reproduction Science, v. 171, p. 87-97, 2016. |
DOI: |
0.1016/j.anireprosci.2016.06.003 |
Idioma: |
Inglês |
Conteúdo: |
This study aimed to evaluate the reproductive response of anoestrous goats that were either hormonally treated and/or supplemented with maize for 9 days to determine which treatment combination was the most effective in enhancing follicular development and ovulation rate, and whether these responses were associated with increases in metabolic hormones. The experiment was carried out using 28 does, using a 2 × 2 factorial design with seven does in each group to test the effect of synchronisation of oestrus, supplementation with maize and their interactions. Synchronisation of oestrous cycles (P < 0.001) but not supplementation with maize or the interaction between the two (P > 0.05) increased the number of codominant follicles, the diameter of the largest follicle on Day 9 and growth rate of follicles during the period of supplementation. Compared with non-supplemented animals, supplementation with maize increased the total number of follicles observed between Days 7 and 9 (P = 0.039). In addition, nutritional supplementation with maize in combination with synchronisation of oestrus increased the ovulation rate by 43% (P = 0.074). Interactions between time and supplementation with maize showed that plasma concentrations of insulin, leptin and IGF-1 were greater in does supplemented with maize compared with non-supplemented does (P < 0.001). The findings show that hormonal syn-chronisation had the most influence on modifying follicular development and ovulation in anoestrous goats. Supplementation with maize increased the concentrations of insulin,leptin and IGF-1, which could potentially modify the sensitivity of follicles to gonadotrophins and reduce rates of atresia. MenosThis study aimed to evaluate the reproductive response of anoestrous goats that were either hormonally treated and/or supplemented with maize for 9 days to determine which treatment combination was the most effective in enhancing follicular development and ovulation rate, and whether these responses were associated with increases in metabolic hormones. The experiment was carried out using 28 does, using a 2 × 2 factorial design with seven does in each group to test the effect of synchronisation of oestrus, supplementation with maize and their interactions. Synchronisation of oestrous cycles (P < 0.001) but not supplementation with maize or the interaction between the two (P > 0.05) increased the number of codominant follicles, the diameter of the largest follicle on Day 9 and growth rate of follicles during the period of supplementation. Compared with non-supplemented animals, supplementation with maize increased the total number of follicles observed between Days 7 and 9 (P = 0.039). In addition, nutritional supplementation with maize in combination with synchronisation of oestrus increased the ovulation rate by 43% (P = 0.074). Interactions between time and supplementation with maize showed that plasma concentrations of insulin, leptin and IGF-1 were greater in does supplemented with maize compared with non-supplemented does (P < 0.001). The findings show that hormonal syn-chronisation had the most influence on modifying follicular development and ovulation in anoestrous g... Mostrar Tudo |
Palavras-Chave: |
Anoestrus; Sincronização hormonal. |
Thesagro: |
Cabra Leiteira; Caprino; Hormônio; Produção animal; Progesterona; Reprodução. |
Thesaurus Nal: |
Animal production; Progesterone. |
Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
Marc: |
LEADER 02674naa a2200313 a 4500 001 2049586 005 2017-01-23 008 2016 bl uuuu u00u1 u #d 024 7 $a0.1016/j.anireprosci.2016.06.003$2DOI 100 1 $aNOGUEIRA, D. M. 245 $aEffect of hormonal synchronisation and/or short-term supplementation with maize on follicular dynamics and hormone profiles in goats during the non-breeding season.$h[electronic resource] 260 $c2016 520 $aThis study aimed to evaluate the reproductive response of anoestrous goats that were either hormonally treated and/or supplemented with maize for 9 days to determine which treatment combination was the most effective in enhancing follicular development and ovulation rate, and whether these responses were associated with increases in metabolic hormones. The experiment was carried out using 28 does, using a 2 × 2 factorial design with seven does in each group to test the effect of synchronisation of oestrus, supplementation with maize and their interactions. Synchronisation of oestrous cycles (P < 0.001) but not supplementation with maize or the interaction between the two (P > 0.05) increased the number of codominant follicles, the diameter of the largest follicle on Day 9 and growth rate of follicles during the period of supplementation. Compared with non-supplemented animals, supplementation with maize increased the total number of follicles observed between Days 7 and 9 (P = 0.039). In addition, nutritional supplementation with maize in combination with synchronisation of oestrus increased the ovulation rate by 43% (P = 0.074). Interactions between time and supplementation with maize showed that plasma concentrations of insulin, leptin and IGF-1 were greater in does supplemented with maize compared with non-supplemented does (P < 0.001). The findings show that hormonal syn-chronisation had the most influence on modifying follicular development and ovulation in anoestrous goats. Supplementation with maize increased the concentrations of insulin,leptin and IGF-1, which could potentially modify the sensitivity of follicles to gonadotrophins and reduce rates of atresia. 650 $aAnimal production 650 $aProgesterone 650 $aCabra Leiteira 650 $aCaprino 650 $aHormônio 650 $aProdução animal 650 $aProgesterona 650 $aReprodução 653 $aAnoestrus 653 $aSincronização hormonal 700 1 $aCAVALIERI, J. 700 1 $aFITZPATRICK, L. A. 700 1 $aGUMMOW, B. 700 1 $aBLACHE, D. 700 1 $aPARKER, A. J. 773 $tAnimal Reproduction Science$gv. 171, p. 87-97, 2016.
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Embrapa Semiárido (CPATSA) |
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Registros recuperados : 4 | |
2. | | NOGUEIRA, D. M.; GARDINER, C. P.; GUMMOW, B.; CAVALIERI, J.; FITZPATRICK, L. A.; PARKER, A. J. A survey of the meat goat industry in Queensland and New South Wales. 1. General property information, goat and pasture management. Animal Production Science, v. 56, p. 1520-1532, 2016.Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 2 |
Biblioteca(s): Embrapa Semiárido. |
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3. | | NOGUEIRA, D. M.; GUMMOW, B.; GARDINER, C. P.; CAVALIERI, J.; FITZPATRICK, L. A.; PARKER, A. J. A survey of the meat goat industry in Queensland and New South Wales. 2. Herd management, reproductive performance and animal health. Animal Production Science, v. 56, p. 1533-1544, 2016.Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 2 |
Biblioteca(s): Embrapa Semiárido. |
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4. | | NOGUEIRA, D. M.; ESHTAEBA, A.; CAVALIERI, J.; FITZPATRICK, L. A.; GUMMOW, B.; BLACHE, D.; PARKER, A. J. Short-term supplementation with maize increases ovulation rate in goats when dietary metabolizable energy provides requirements for both maintenance and 1.5 times maintenance. Theriogenology, v. 89, p. 97-105, 2017.Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 2 |
Biblioteca(s): Embrapa Semiárido. |
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Registros recuperados : 4 | |
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Nenhum registro encontrado para a expressão de busca informada. |
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