Mother–young behaviours at lambing in grazing ewes: Effects of lamb sex and food restriction in pregnancy

Freitas‐de‐Melo, Aline; Ungerfeld, Rodolfo; Hötzel, María José; Abud, M. J.; Álvarez-Oxiley, Andrea; Orihuela, Agustı́n; Damián, Juan Pablo; Pérez-Clariget, Raquel

doi:10.1016/j.applanim.2015.04.009

Cited by 34 publications

(23 citation statements)

References 27 publications

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“…Moreover, the bond was similar between treatments at least after lambing, as it was demonstrated with the MBS test. These findings corroborate our previous conclusions (Freitas-de-Melo et al, 2015) that Figure 7 Serum total protein (a), albumin (b) and globulin (c) concentrations (mean ± SEM) before and after weaning (weaning: day 65) of the lambs reared by ewes that grazed on high (HPA) (black bars) or low (LPA) (grey bars) native pasture allowances from 23 days before conception until 122 days of gestation. The change in the serum albumin concentration between before and after weaning was greater in the HPA lambs than in the LPA lambs (P = 0.01).…”

Section: Discussionsupporting

confidence: 88%

“…The pasture allowance affected BW and BCS of ewes; however, it did not affect the BW of the lambs and their behaviours at birth. The drastic increase in nutrient supply during late gestation -the period of greatest increase in foetal weight (Rattray et al, 2007) -may have alleviated any potential negative effects of LPA on lambs' birth weight and ewe-lamb behaviours at lambing (Freitas-de-Melo et al, 2015). However, milk yield and some lambs' responses to weaning were affected by treatment.…”

Section: Discussionmentioning

confidence: 99%

“…The ewes used in this experiment were part of a group of animals used in a larger published study, where detailed management was described (Freitas-de-Melo et al, 2015). Pasture allowance was adjusted every month based on the measurements of pasture mass and BW of all the ewes, and including or removing 'put-and-take' ewes.…”

Section: Treatmentsmentioning

confidence: 99%

“…When labour began, the length of the second stage of parturition was recorded (from appearance of foetal front or rear legs to complete lamb expulsion). Latency from birth to first lick of the lamb, for the lamb to stand up and to first suckle were recorded (Freitas-de-Melo et al, 2015). Thereafter, lambs were tagged and their sex was recorded.…”

Section: Treatmentsmentioning

confidence: 99%

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Low pasture allowance until late gestation in ewes: behavioural and physiological changes in ewes and lambs from lambing to weaning

Freitas‐de‐Melo

Ungerfeld²,

Hötzel

et al. 2017

Animal

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Low pasture allowance during gestation affects ewes' BW at parturition, the bond with their lamb, lamb development, and thus also may affect their responses to weaning. The objectives were to determine if native pasture allowance from before conception until late pregnancy affects ewe-lamb behaviours at lambing, ewes' milk yield, lambs' BW, and the behavioural and physiological changes of ewes and lambs at weaning. From 23 days before conception until 122 days of pregnancy, 24 ewes grazed on two different native pasture allowances: high (10 to 12 kg of dry matter (DM)/100 kg of BW per day; HPA treatment; n = 12) or low (5 to 8 kg of DM/100 kg of BW per day; LPA treatment; n = 12). Thereafter, all ewes grazed on Festuca arundinacea and received rice bran and crude glycerine. Ewes' body condition score (BCS) and BW were recorded during pregnancy and postpartum periods. Milk yield was determined on days 32, 41 and 54 after lambing. Lambs' BW was recorded from birth until 72 days after lambing. Latency from parturition until the ewe licked her lamb, maternal behaviour score (a test that evaluates maternal attachment to the lamb) and latency for lamb to stand up and suckle were determined. The behaviour of the lambs and ewes was recorded before and after weaning (at 65 days). The ewes' serum total protein, albumin and globulin concentrations were measured before and after weaning. The HPA ewes presented greater BW ( P < 0.005) and BCS ( P < 0.005) than the LPA ewes during pregnancy and postpartum (P < 0.04), and had a greater milk yield than the LPA ewes ( P < 0.03). Treatments did not influence any behaviour at lambing, lambs' BW, neither the ewes' behavioural and physiological changes at weaning. HPA lambs paced and vocalized more than LPA lambs ( P < 0.0001). The variation of albumin concentration before and after weaning was greater in the HPA lambs than in the LPA lambs ( P < 0.0001). In conclusion, although ewes' BW, BCS and milk production were affected by pasture allowance until late pregnancy, this did not affect the behaviours that lead to the establishment of the mother-young bond, nor the ewes' behavioural responses at weaning. Lambs reared by ewes that grazed on low pasture allowance during pregnancy presented fewer behavioural changes and a lower decrease of albumin concentration after weaning. Lambs' BW was not affected by the feeding received by their mothers.

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Section: Discussionsupporting

confidence: 88%

Section: Discussionmentioning

confidence: 99%

Section: Treatmentsmentioning

confidence: 99%

Section: Treatmentsmentioning

confidence: 99%

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Low pasture allowance until late gestation in ewes: behavioural and physiological changes in ewes and lambs from lambing to weaning

Freitas‐de‐Melo

Ungerfeld²,

Hötzel

et al. 2017

Animal

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“…El trabajo se realizó en la Estación Experimental Bernardo Rosengurtt, Facultad de Agronomía, Udelar, Cerro Largo (32º S) y los procedimientos utilizados aprobados por la Comisión Honoraria de Experimentación Animal de la Universidad de la República (CHEA, Uruguay). Los tratamientos y metodología están descritos en Freitas de Melo et al (2015). Brevemente, se utilizaron 36 ovejas Corriedale que fueron asignadas al azar a dos diferentes ofertas de forraje de campo natural: a) Alta oferta (Grupo AOF, n = 18): 10 kg MS/100 kg PV/día desde el día -23 de la concepción hasta el Día 96 de la gestación y 12 kg MS/100 kg PV/día desde el día 97 hasta el 122; b) Baja oferta de forraje (Grupo BOF, n = 18): 5 kg MS/100 kg PV/día y 8 kg MS/100 kg PV/día durante los mismos periodos que el grupo anterior.…”

Section: Materiales Y Métodosunclassified

Primer Seminario Técnico de Programación Fetal

2019

INIA

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Los orígenes de la programación o desarrollo fetal en ganado vacuno y algunas áreas de investigación a futuro. Cuadro 1. Efecto de la subnutrición materna durante la gestación de vacas, sobre el crecimiento fetal, resultados publicados antes del año 2000. CAPÍTULO I: EFECTO DE LA RESTRICCIÓN NUTRICIONAL DURANTE LA GESTACIÓN SOBRE LA PROGENIE EN VACUNOS Efecto de la restricción proteica de vacas Angus durante la gestación tardía: rendimiento reproductivo posterior y producción de leche. Cuadro 1. Peso vivo y estado corporal durante el parto y posparto en vacas multíparas consumiendo dietas de bajo o alto contenido de proteína durante los 120 días previos al parto.

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