Fecha/hora: 11/06/2024 17:45:18

Biblioteca(s): 	INIA La Estanzuela; INIA Tacuarembó.	
Fecha corriente: 	23/09/2014	
Fecha de la última actualización: 	05/11/2019	
Autoria: 	FIERRO, S.; GIL, J.; VIÑOLES, C.; SOCA, F.; BANCHERO, G.; OLIVERA-MUSANTE, J.	
Afiliación: 	CAROLINA VIÑOLES GIL, Instituto Nacional de Investigación Agropecuaria (INIA), Uruguay; GEORGGET ELIZABETH BANCHERO HUNZIKER, Instituto Nacional de Investigación Agropecuaria (INIA), Uruguay.	
Título: 	Protein supplementation during a short-interval prostaglandin-based protocol for timed AI in sheep.	
Año de publicación: 	2014	
Fuente/Imprenta: 	Animal Reproduction Science, october 2014, Volume 149, Issues 3?4,  Pages 158-162.	
ISSN: 	0378-4320	
DOI: 	10.1016/j.anireprosci.2014.07.009	
Idioma: 	Inglés	
Notas: 	Article history:Received 8 November 2013/Received in revised form 2 July 2014/Accepted 8 July 2014/Available online 18 July 2014.	
Contenido: 	The aim of this experiment was to improve the reproductive performance of a short-interval prostaglandin (PG)-based protocol for timed artificial insemination in sheep, using a short-term nutritional treatment. During the breeding season (March–April), 132 multiparous and 61 nulliparous Corriedale ewes grazing natural pastures (600 kg DM/ha, 8.5% CP), were allocated to two groups: 1, Control group (n = 100) two injections of D-Cloprostenol (75 ?g per dose, 7 d apart: Synchrovine® protocol); and 2, Supplemented group (n = 93) ewes in which stage of the oestrous cycle was synchronised with Synchrovine® protocol plus focus feeding of a protein supplement (33.8% CP) between PG doses (Day ?7 to ?2). Cervical AI was performed at fixed time (Day 0), 46 ± 1.0 h after the second PG injection using 150 million sperm per ewe. Ovulation rate (Day 10), pregnancy rate, prolificacy and fecundity at Day 69 were evaluated by ultrasonography. Ovulation rate at Day 10 (1.20 ± 0.05 vs. 1.22 ± 0.05), pregnancy (46 ± 0.05 vs. 56 ± 0.05), prolificacy (1.09 ± 0.04 vs. 1.06 ± 0.05), and fecundity (0.49 ± 0.06 vs. 0.59 ± 0.06) at Day 69, were similar between groups (P > 0.05; Control and Supplemented group respectively). It is concluded that focus feeding for 6 d with protein supplementation during a short-interval PG-based protocol (Synchrovine®) did not improve the reproductive outcome associated with this protocol.	
Palabras-Clave: 	EWES; FOCUS FEEDING; INSEMINACIÓN ARTIFICIAL; OESTRUS SYNCHRONISATION; OVEJA; OVULATION RATE; PROSTAGLANDIN; SUPLEMENTACIÓN PROTEICA; TIMED ARTIFICIAL INEMINATION; TIMED ARTIFICIAL INSEMINATION.	
Thesagro: 	INSEMINACIÓN ARTIFICIAL; OVEJA; REPRODUCCION OVINA; SUPLEMENTACION.	
Categoría del tema: 	L53 Fisiología Animal - Reproducción	
Registro original: 	INIA La Estanzuela (LE)	
Ejemplares: 	LE - (100195-1) - PXI - AP - DD - PP/Animal Reproduction Science/2014 -  -  - DIS
TBO - (100264-1) - PXI - AP - DD - PP/Animal Reproduction Science/2014/149 -  -  - DIS