RT info:eu-repo/semantics/article
T1 Evolution of the corpus luteum volume determined ultrasonographically and its relation to the plasma progesterone concentration after artificial insemination in pregnant and non-pregnant dairy cows
A1 Gómez Seco, Cristina
A1 Alegre Gutiérrez, Beatriz
A1 Martínez Pastor, Felipe
A1 Prieto Fernández, Julio Gabriel
A1 González Montaña, José Ramiro
A1 Alonso de la Varga, Marta Elena
A1 Domínguez Fernández de Tejerina, Juan Carlos
A2 Biologia Celular
K1 Veterinaria
K1 Ultrasound
K1 Corpus luteum
K1 Progesterone
K1 Pregnancy
K1 Dairy cattle
AB The aim of this study was to assess the relationship of the evolution of the corpus luteum (CL) volume that was determined ultrasonographically with the pregnancy status in lactating dairy cows during early pregnancy. Ultrasound examinations were carried out on 76 cows following artificial insemination (AI). Plasma concentrations of progesterone were determined from blood samples collected at each ultrasound examination. Conception was confirmed by ultrasonography on day 30 after AI. Around day 14 post-insemination (p.i.), the CL volume tended to decrease in pregnant and non-pregnant cows, and, after day 19 p.i., both groups differed significantly, indicating the luteal regression in non-pregnant cows. Reaching signification on day 20. The diminution in CL volume was also reflected in the plasma progesterone concentration. However, the patterns of CL volume, estimated by ultrasonography, differed more evidently and earlier between both groups (around 1 week p.i., at day 9 p.i. P < 0.05, whereas progesterone started to differ around 2 weeks p.i., at day 14 p.i, P < 0.05). These results indicate that the estimation of the CL volume by ultrasonography could be useful for assessing the presence of a functional CL.
PB Springer
YR 2019
FD 2019-05-13
LK http://hdl.handle.net/10612/10715
UL http://hdl.handle.net/10612/10715
NO Veterinary Research Communications, 2017, vol. 41, n. 3
NO P. 183–188
DS BULERIA. Repositorio Institucional de la Universidad de León
RD 27-abr-2024