Development and growth of bovine calves demi-embryos.

Autor: Ynsaurralde-Rivolta AE; Universidad de Buenos Aires, Facultad de Agronomía, Dto. Producción Animal, Buenos Aires, Laboratorio Biotecnología Animal (LabBA). Buenos Aires. Argentina; Instituto Nacional de Tecnología Agropecuaria (INTA), Laboratorio de Biotecnología de la Reproducción EEA, Mercedes, Corrientes, Argentina., Rogberg-Muñoz A; Universidad de Buenos Aires, Facultad de Agronomía, Dto. Producción Animal, Buenos Aires, Cátedra de Mejoramiento Genético, Buenos Aires, Argentina; CONICET-Universidad de Buenos Aires. Instituto de Investigaciones en Producción Animal (INPA), Buenos Aires, Argentina., Lopez-Valiente S; Instituto Nacional de Tecnología Agropecuaria (INTA), EEA Cuenca del Salado, Buenos Aires, Argentina., Maresca S; Instituto Nacional de Tecnología Agropecuaria (INTA), EEA Cuenca del Salado, Buenos Aires, Argentina., Rodriguez A; Instituto Nacional de Tecnología Agropecuaria (INTA), EEA Cuenca del Salado, Buenos Aires, Argentina., Munar C; Munar & Asociados, La Plata, Argentina., Munilla-Leguizamón S; Universidad de Buenos Aires, Facultad de Agronomía, Dto. Producción Animal, Buenos Aires, Cátedra de Mejoramiento Genético, Buenos Aires, Argentina; CONICET-Universidad de Buenos Aires. Instituto de Investigaciones en Producción Animal (INPA), Buenos Aires, Argentina., Dellavalle FA; Instituto Nacional de Tecnología Agropecuaria (INTA), Laboratorio de Biotecnología de la Reproducción EEA, Mercedes, Corrientes, Argentina., Salamone D; Universidad de Buenos Aires, Facultad de Agronomía, Dto. Producción Animal, Buenos Aires, Laboratorio Biotecnología Animal (LabBA). Buenos Aires. Argentina; CONICET-Universidad de Buenos Aires. Instituto de Investigaciones en Producción Animal (INPA), Buenos Aires, Argentina. Electronic address: salamone@agro.uba.ar.
Jazyk: angličtina
Zdroj: Animal reproduction science [Anim Reprod Sci] 2024 May; Vol. 264, pp. 107405. Date of Electronic Publication: 2023 Dec 21.
DOI: 10.1016/j.anireprosci.2023.107405
Abstrakt: The aim of this study was to investigate the growth and development of animals produced from demi-embryos and compare them with whole embryos from fetus to adult life. To achieve this, calves produced from fresh demi-embryos and whole embryos were individually transferred and monitored from 60 days of pregnancy until slaughter at 550 days. Ultrasound scans were conducted on fetuses at 60 and 90 days to evaluate the biparietal, abdominal, umbilical cord, orbital, and aorta diameters. Subsequently, morphological traits of newborn calves were measured at 0, 7, and 21 days (N = 18). Live weight was recorded at birth, weaning, and every 30 days thereafter until slaughter at 550 days. The growth curve of each group was modeled using logistic regression, and the factors of the respective functions were compared. As early as 60 days of pregnancy, ultrasound evaluations revealed no morphometric differences between fetuses produced from demi-embryos and those from whole embryos. This lack of differentiation persisted in the morphometric evaluations of newborns up to 21 days of age, as well as in live weight and the growth curve from birth to slaughter. Moreover, there were no significant differences between the groups in terms of rib eye area and fat thickness evolution. Consequently, individuals from demi-embryos exhibited no discernible disparities to those whole embryos in growth and development from 60 days of gestation, through birth, and into adulthood.
Competing Interests: Declaration of Competing Interest The authors report no declarations of interest.
(Copyright © 2024. Published by Elsevier B.V.)
Databáze: MEDLINE
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