Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 6 de 6
Filtrar
Mais filtros










Base de dados
Intervalo de ano de publicação
1.
Reprod Fertil Dev ; 24(4): 550-8, 2012.
Artigo em Inglês | MEDLINE | ID: mdl-22541543

RESUMO

The present study characterised gene expression associated with embryonic muscle development and placental vascularisation during early gestation in the pig and examined effects of Progenos supplementation in early pregnancy. Tissues were collected from commercial multiparous sows (n = 48) from Days 16 to 49 of gestation. In the placenta, qPCR revealed that vascular endothelial growth factor (VEGFA) expression did not change from Day 17 to 49 of gestation; however, KDR receptor and angiopoietin-1 and -2 expression were differentially regulated, with periods of high expression corresponding to two critical phases of angiogenesis in the pig. In the embryo, the pattern of myogenesis-related gene expression was consistent with available literature. A commercially available nutritional supplement Progenos (20 g day⁻¹ L-arginine) added to the diet of sows from either Day 15 to 29 (P15-29; n = 33), Day 30 to 44 (n = 29) or from Day 15 to 44 (n = 76) of gestation tended to increase (P = 0.058) embryonic growth rate compared with non-supplemented controls (n = 79) and angiogenin expression was higher (P = 0.028) at Day 30 of gestation in placentae from sows on the P15-29 Progenos treatment. These results are consistent with proposed beneficial effects of l-arginine on early embryonic development and placental vascularisation.


Assuntos
Suplementos Nutricionais , Desenvolvimento Embrionário , Regulação da Expressão Gênica no Desenvolvimento , Fenômenos Fisiológicos da Nutrição Materna , Placenta/metabolismo , Placentação , Sus scrofa/metabolismo , Alberta , Angiopoietinas/genética , Angiopoietinas/metabolismo , Animais , Arginina/administração & dosagem , Perda do Embrião/prevenção & controle , Embrião de Mamíferos/anatomia & histologia , Embrião de Mamíferos/metabolismo , Feminino , Peso Fetal , Desenvolvimento Muscular , Neovascularização Fisiológica , Placenta/irrigação sanguínea , Gravidez , RNA Mensageiro/metabolismo , Sus scrofa/embriologia , Receptor 2 de Fatores de Crescimento do Endotélio Vascular/genética , Receptor 2 de Fatores de Crescimento do Endotélio Vascular/metabolismo
3.
Poult Sci ; 55(1): 447-9, 1976 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-819913

RESUMO

An extensive survey of birds for Leucocytozoon in South Carolina during the summer of 1972 revealed that Blue Jays, Purple Grackles and domestic chickens were commonly infected. No alternate hosts were found for Leucocytozoon smithi of turkeys.


Assuntos
Apicomplexa , Doenças das Aves/epidemiologia , Infecções Protozoárias em Animais , Animais , Aves , Galinhas , Columbidae , Patos , Gansos , Doenças das Aves Domésticas/epidemiologia , Infecções por Protozoários/epidemiologia , South Carolina
4.
J Wildl Dis ; 11(4): 516-8, 1975 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-811815

RESUMO

A survey of 76 hunter-killed wild turkeys from all geographic regions in South Carolina during 1972 revealed that 33 of 76 (43%) were infected with Leucocytozoon smithi. Ten turkeys in the Coastal area had multiple infections with both L. smithi and Haemoproteus meleagridis.


Assuntos
Apicomplexa , Perus/parasitologia , Animais , Masculino , South Carolina
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA
...