Fecha/hora: 03/06/2024 05:05:54

Biblioteca(s): 	INIA Treinta y Tres.	
Fecha corriente: 	30/11/2021	
Fecha de la última actualización: 	30/11/2021	
Autoria: 	LÓPEZ VALIENTE, S.; RODRÍGUEZ, A. M.; LONG, N. M.; QUINTANS, G.; MICCOLI, F. E.; LACAU-MENGIDO, I. M.; MARESCA, S.	
Afiliación: 	SEBASTIÁN LÓPEZ VALIENTE, Estación Experimental Agropecuaria Cuenca del Salado, INTA - ARGENTINA; ALEJANDRO M. RODRÍGUEZ, Estación Experimental Agropecuaria Cuenca del Salado, INTA - ARGENTINA; NATHAN M LONG, Department of Animal and Veterinary Sciences, Clemson University, Clemson, USA.; GRACIELA QUINTANS ILARIA, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; FLORENCIA E. MICCOLI, Facultad de Ciencias Agrarias, Universidad Nacional de Lomas de Zamora, BA. Argentina; ISABEL M. LACAU-MENGIDO, Laboratorio de Regulación hipofisaria, Instituto de Biología y Medicina Experimental (CONICET), BA, Argentina.; SEBASTIÁN MARESCA, Estación Experimental Agropecuaria Cuenca del Salado, INTA - ARGENTINA.	
Título: 	Age at first gestation in beef heifers affects fetal and postnatal growth, glucose metabolism and IGF1 concentration.	
Año de publicación: 	2021	
Fuente/Imprenta: 	Animals 2021, volume 11, issue 12, article number 3393. Open Access. Doi: https://doi.org/10.3390/ani11123393	
DOI: 	10.3390/ani11123393	
Idioma: 	Inglés	
Notas: 	Article history: Received: 21 October 2021 / Revised: 23 November 2021 / Accepted: 24 November 2021 / Published: 27 November 2021	
Contenido: 	This study aimed to determine the effects of age at first gestation on offspring growth performance, glucose metabolism, and IGF1 concentration. Heifers impregnated by AI from a single bull at 15 months of age (15 M, n = 20), or 27 months of age (27 M, n = 20), and multiparous cows (adult, n = 20) were used. Dams from all groups were managed in a single group during gestation and lactation. Gestational length was longer in the 15 M and 27 M than in adult dams (p = 0.009). Bodyweight at birth, at weaning and ADG during lactation were higher in calves from adult dams than in those from 27 M dams, and higher in calves from the latter than in 15 M calves (p < 0.001). Calves from 15 M dams had an increased head circumference/BW ratio compared to calves from 27 M dams, while calves from this latter group had an increased ratio compared to calves from adults (p = 0.005). Body mass index was greater in calves from adults than in those from 15 M and 27 M dams (p = 0.002). Milk production from 15 M and 27 M dams was similar but lower than that from adults (p = 0.03). Calves born from adult dams had greater blood glucose concentrations than those from 15 M and 27 M dams (p < 0.05). Serum IGF1 concentrations were higher in calves from adults than in calves from 15 M and 27 M dams (p = 0.01). This study showed that age at first gestation affects offspring postnatal growth performance, glucose metabolism and IGF1 concentration.	
Palabras-Clave: 	BOVINE; DAM AGE; FETAL PROGRAMMING; GROWTH; OFFSPRING; OFFSPRING PUBERTY.	
Categoría del tema: 	L53 Fisiología Animal - Reproducción	
URL: 	http://www.ainfo.inia.uy/digital/bitstream/item/16116/1/animals-11-03393-v2.pdf
https://www.mdpi.com/2076-2615/11/12/3393	
Registro original: 	INIA Treinta y Tres (TT)	
Ejemplares: 	TT - (103436-1) - PXI - AP - DD - ANIMALS/2021/Lopez-Valiente -  -  - DIS