Data/hora: 04/06/2024 05:20:31

Biblioteca(s): 	Embrapa Gado de Leite.	
Data corrente: 	02/06/2022	
Data da última atualização: 	02/06/2022	
Autoria: 	CAMPOS, I. S.; SOUZA, G. N. de; GOMES, G. M.; PINNA, A. E.; FERREIRA, A. M. R.	
Afiliação: 	ISABELA S. CAMPOS, Universidade Federal Fluminense; GUILHERME NUNES DE SOUZA, CNPGL; GUSTAVO MENDES GOMES, Universidade de Vassouras, RJ; ALINE E. PINNA, Universidade Federal Fluminense; ANA M. R. FERREIRA, Universidade Federal Fluminense.	
Título: 	Spectral doppler ultrasound in the placental development of Mangalarga Marchador mares.	
Ano de publicação: 	2022	
Fonte/Imprenta: 	Theriogenology, v. 180, p. 171-175, 2022.	
DOI: 	https://doi.org/10.1016/j.theriogenology.2021.12.019	
Idioma: 	Inglês	
Conteúdo: 	The aim of the study was to correlate the spectral index of the right and left uterine arteries with equine placental development in mares with advanced pregnancies. We examined 32 multiparous Mangalarga Marchador mares with gestation of 150-240 days. During pregnancy, the pulsatility index (PI) and resistance index (RI) of the uterine arteries were obtained using spectral Doppler ultrasonography, and the combined uteroplacental thickness was obtained monthly using B-mode ultrasonography. The combined uteroplacental thickness correlated with gestational time of up to 13 years of age, and the significant difference was observed from the sixth month onwards. The CUPT stayed within the ideal measurements for this breed and for this gestational period. There was no correlation of CUPT with PI, however a negative and significant correlation of the RI was observed. The resistance index differed significantly among age groups, and the RI of the left uterine artery tended to decrease in all age groups. Furthermore, only RI differed significantly between the medians of gestatinal age. The left PI dropped in older mares. Thus, there an increased blood perfusion in the uterine arteries of mares with advanced pregnancies and among different age categories during placental and fetal physiological development.	
Palavras-Chave: 	Desenvolvimento placentário; Índice espectral; Vascularização.	
Thesagro: 	Artéria; Égua; Placenta; Ultrassom.	
Categoria do assunto: 	L Ciência Animal e Produtos de Origem Animal	
Registro original: 	Embrapa Gado de Leite (CNPGL)	
Exemplares: 	CNPGL - (25665-1) - UPC - AP - DD -  -  -  - DIS