Fecha/hora: 04/06/2024 05:48:58

Biblioteca(s): | INIA Treinta y Tres.
Fecha corriente: | 11/11/2019
Fecha de la última actualización: | 13/11/2019
Autoria: | LÓPEZ VALIENTE, S.; MARESCA, S.; RODRÍGUEZ, A.M.; LONG, N.M.; QUINTANS, G.; PALLADINO, R.A.
Afiliación: | SEBASTIÁN LÓPEZ VALIENTE, Instituto Nacional de Tecnología Agropecuaria. Estación Experimental Cuenca del Salado. Argentina; SEBASTIÁN MARESCA, Instituto Nacional de Tecnología Agropecuaria. Estación Experimental Cuenca del Salado. Argentina.; A.M. RODRÍGUEZ, Instituto Nacional de Tecnología Agropecuaria. Estación Experimental Cuenca del Salado. Argentina; N.M. LONG, Departamento de Ciencias Animales y Veterinarias. Universidad de Clemson, Carolina del Sur, Estados Unidos de América.; GRACIELA QUINTANS ILARIA, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; R.A. PALLADINO, IIPAAS-CONICET, Universidad Nacional de Lomas de Zamora, Buenos Aires, Argentina.
Título: | Efecto de la restricción proteica en vacas multíparas durante la gestación media y tardía en el crecimiento y fertilidad de la progenie femenina.
Año de publicación: | 2019
Fuente/Imprenta: | In: QUINTANS, G.; IEWDIUKOW, M. (Ed.). Primer Seminario Técnico de Programación Fetal. Montevideo (UY): INIA, 2019. p. 45-51.
Série: | (INIA Serie Técnica; 252)
ISBN: | 978-9974-38-436-1
ISSN: | 1688-9266
Idioma: | Español

Contenido:

ABSTRACT
The objective of the present work was to investigate the effects of two levels of crude protein (CP) provided to mature dams during late gestation on subsequent heifer’s growth postweaning and reproductive performance. At 121 d prepartum, 68 multiparous Angus cows were blocked by BW and expected calving date and
randomly assigned to low protein (LP, 6% CP) or high protein (HP, 12% CP) at 12 pens per treatment. Following calving, all cow/calf pairs were housed together until weaning, then female progeny were removed and maintained on pasture as a single group. At puberty (P = 0.01) and pregnancy determination (P = 0.05) the HP heifers were heavier than LP heifers. The LM area was greater at 20 mo of age in HP compared to LP heifers (P = 0.01). Serum IGF-1 concentration was greater in HP heifers compared to LP heifers (P = 0.05). No dam nutrition effects were found on offspring age at puberty (P = 0.98), final pregnancy rate (P = 0.28). Protein supplementation during late gestation does not affect reproductive performance of the offspring heifers but did impact their BW evolution. The use of diet with low amount of protein which the female fetus is exposed in utero can affect her subsequent development.

Palabras-Clave: | CRECIMIENTO; FETAL PROGRAMMING; GROWTH; PROGRAMACIÓN FETAL; PUBERTAD; PUBERTY.
Categoría del tema: | L53 Fisiología Animal - Reproducción
URL: | http://www.ainfo.inia.uy/digital/bitstream/item/13785/1/St-252-p-45-51-Lopez-Valiente.pdf
Registro original: | INIA Treinta y Tres (TT)
Ejemplares: | TT - (102916-1) - INI - PL - DD - UY/INIA/ST/252/2019 -  - st-252 - DIS