Data/hora: 22/09/2024 16:44:10

Biblioteca(s): 	Embrapa Gado de Leite.	
Data corrente: 	10/05/2022	
Data da última atualização: 	10/05/2022	
Autoria: 	GUEDES, P. H. E.; OLIVEIRA, C. S.; DIAS, H. R. S.; FREITAS, C. de; CAMARGO, A. J. R.; SARAIVA, N. Z.; CAMARGO, L. S. de A.	
Afiliação: 	CLARA SLADE OLIVEIRA, CNPGL; CELIO DE FREITAS, CNPGL; Pesagro-Rio; NAIARA ZOCCAL SARAIVA, CNPGL; LUIZ SERGIO DE ALMEIDA CAMARGO, CNPGL.	
Título: 	Ultrasound characteristics and pregnancy loss in bovine IVF-derived pregnancies.	
Ano de publicação: 	2022	
Fonte/Imprenta: 	Livestock Science, v. 257, 104847, 2022.	
DOI: 	https://doi.org/10.1016/j.livsci.2022.104847	
Idioma: 	Inglês	
Conteúdo: 	We compared ultrasound characteristics during the first trimester of Girolando female bovine IVF gestations that reached term or not. Pregnant recipients (n = 35) were followed up by ultrasonography every 6 days from D37 up to D90 or until the fetal heartbeat ceased. Embryonic vesicle diameter (EVD), fetometry parameters crown rump length (CRL) and biparietal diameter (BPD), and fetal heart rate (FHR) were assessed in fetuses from recipients that completed gestational development (n = 30) (Control group) or experienced pregnancy loss (n = 5) (Pregnancy Loss group). Results were analyzed by ANOVA repeated measurements. A detection of embryonic vesicle was not possible at D31 in gestations that did not reach term. CRL was decreased in pregnancy loss group and differed at D37 (16.17 ± 0.30 vs 13.14 ± 0.77 mm, for control and pregnancy loss group, respectively) and D55 (46.13 ± 0.51 vs 41.88 ± 2.74 mm, for control and pregnancy loss group, respectively). BPD values were similar between groups. FHR decreased at D49 (181.52 ± 0.82 vs 164.75 ± 9.29 bpm, for control and pregnancy loss group, respectively) and D55 (175.41 ± 2.19 vs 150.80 ± 15.10 bpm, for control and pregnancy loss group, respectively) in early pregnancy losses. These findings indicate that embryonic vesicle, CRL and FHR monitoring of IVF-derived gestations at days 31, 37 and 55 could be useful to predict an increased risk of pregnancy loss.	
Palavras-Chave: 	Fertilização in vitro; Gado Girolando; Gestação animal.	
Thesagro: 	Bovino; Inseminação Artificial; Reprodução Animal.	
Categoria do assunto: 	L Ciência Animal e Produtos de Origem Animal	
Registro original: 	Embrapa Gado de Leite (CNPGL)	
Exemplares: 	CNPGL - (25639-1) - UPC - AP - DD -  -  -  - DIS