Fecha/hora: 09/06/2024 12:18:42

Biblioteca(s): 	INIA La Estanzuela.	
Fecha corriente: 	12/02/2021	
Fecha de la última actualización: 	12/02/2021	
Autoria: 	REGUEIRO, M; BALDI, F.; LÓPEZ MAZZ, C.; BANCHERO, G.	
Afiliación: 	M. REGUEIRO, Faculty of Agronomy, UDELAR, Garzón 780, 12900, Uruguay.; FERNANDO BALDI, UNESP, SP, 14884-900, Brazil,; CARLOS LÓPEZ MAZZ, Facultad de Agronomía, UDELAR.; GEORGGET ELIZABETH BANCHERO HUNZIKER, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay.	
Título: 	Prepartum grazing with oat pasture and its effect on mother-lamb behaviour at parturition [Poster].	
Complemento del título: 	Seccio 51- Poster 26	
Año de publicación: 	2018	
Fuente/Imprenta: 	In: Annual Meeting of the European Federation of Animal Science (EAAP), 69., 2018, Dubrovnik, Croatia. Book of abstracts... Wageningen, NL: WAP, 2018.	
Páginas: 	P. 521	
Idioma: 	Inglés	
Contenido: 	Nutrition during gestation has an important role at time of parturition for both mother and offspring. The effect of different nutritional management during the last month of pregnancy on body condition (BCS), body weight (BW) and mother-lamb behaviour at parturition was evaluated. One hundred and forty multiparous Corriedale ewes gestating a single lamb were offered native pasture (7% crude protein (CP)) during the first four months of gestation and were assigned to two differential nutritional management during the last month of pregnancy: (1) ewes grazing oat pasture (14% CP) (GO, n=71); (2) ewes fed native pasture (GNP, n=69), regarding BW and BCS at the beginning
of the treatment (49.1±0.7 vs 49.7±0.7 kg and 3.74±0.05 vs 3.77±0.05 GO and GNP respectively). At parturition BW and BCS were registered, as well as duration of labour, delivery assistance and Maternal Behaviour Score (MBS,range 1-5). In lambs, birth weight, Apgar test for newborns (score 0-10), and time elapsed to stand and suck was recorded. Data were analysed using PROC MIXED and GENMOD of SAS, (mean ± SEM; P?0.05). At parturition GO ewes had higher BW (56.7±0.8 vs 52.7±0.7 kg P?0.0001) and BCS (3.7±0.04 vs 3.4±0.06 P=0.0007) than GNP. Duration of labour was longer (32.5±4.7 vs 24.03 min, p?0.001) and percentage of delivery assistance was significant
greater (22.5 vs 4.3%) in GO group. Lambs from GO mothers were heavier (4.77±0.07 vs 4.28±0.09 kg, P=0.0037),and took longer to stand (36.4±4.2 vs 28.5±3.9 min, p?0.001) and suck (56.4±5.2 vs 51.5±4.9 min, P=0.0011) than GNP lambs. There was no effect on MBS or Apgar test. The increment in BW and BCS of GO animals resulted in heavier lambs, that led to longer time of labor and less vigor compared with lambs of GNP ewes. Higher percentage of birth assistance in GO ewes suggests that the benefit of a greater weight at birth can be exploited only if control of parturition is performed. However, grazing oat pasture should be an alternative to be used with twin bearing ewes
since lambs are usually lighter and have less vigor than single ones.	
Palabras-Clave: 	REPRODUCCIÓN OVINA.	
Thesagro: 	OVINOS; REPRODUCCION ANIMAL.	
Categoría del tema: 	L53 Fisiología Animal - Reproducción	
URL: 	http://www.ainfo.inia.uy/digital/bitstream/item/15006/1/EAAP-BOA-2018.Banchero.pdf	
Registro original: 	INIA La Estanzuela (LE)	
Ejemplares: 	LE - (103279-1) - PXI - PS - DD - EAAP-2018/Banchero -  -  - DIS