Arena behaviour of ewes selected for superior mothering ability differs from that of unselected ewes

Kilgour, R.; Szantar-Coddington, M.R.

doi:10.1016/0378-4320(94)01332-g

Cited by 48 publications

(24 citation statements)

References 10 publications

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“…Entretanto, a relação entre escore de condição corporal e o comportamento no teste de arena não está clara. De acordo com alguns autores (Kilgour, 1998;Kilgour & Szantar-Coddington, 1995), animais mais pesados teriam maior dificuldade de se movimentar nos testes. Como o teste de arena foi aplicado durante o desmame, esse fato pode ter ocorrido com os animais com maior escore de condição corporal ao desmame, enquanto aqueles com maior escore de condição corporal antes do parto podem ter modificado seu escore de condição corporal pelo intervalo de tempo decorrido entre essa medida e as avaliações do comportamento.…”

Section: Resultsunclassified

Relação entre o escore de comportamento materno e as características fisiológicas de ovelhas

et al. 2012

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RESUMO -Neste estudo objetivou-se avaliar a relação do escore de comportamento materno de ovelhas com os parâmetros fisiológicos relacionados ao seu temperamento. Durante a parição, foram avaliadas 258 ovelhas Corriedale e 50 ovelhas Ideal criadas em campo natural em três fazendas na região sudoeste do estado do Rio Grande do Sul, Brasil. Foram analisados os efeitos propriedade, idade, tipo de parto, escore de comportamento materno e escore de condição corporal antes do parto e ao desmame em relação às frequências cardíaca e respiratória e temperatura corporal dos animais ao desmame. Nas primeiras 24 horas de vida do cordeiro, o escore de comportamento materno foi atribuído à distância de fuga da ovelha em relação ao seu cordeiro: 1) >10 m e não retorna ao cordeiro; 2) >10 m do cordeiro e retorna; 3) 5 a 10 m; 4) entre 1 e <5 m; 5) <1 m; 6) mantém contato físico. Ovelhas com escore de comportamento materno <3 apresentaram maior frequência cardíaca, mas valores semelhantes de frequência respiratória e temperatura corporal se comparadas àquelas com escore de comportamento materno >3. Ovelhas criadas em Bagé apresentaram os maiores valores de frequência cardíaca e respiratória.Ovelhas com escore de condição corporal antes do parto <2,0 apresentaram menores valores de frequência cardíaca e respiratória e temperatura corporal, enquanto ovelhas com escore de condição corporal ao desmame <2,0 tiveram maiores valores de frequência cardíaca e respiratória e menor temperatura corporal. A pouca associação entre os parâmetros fisiológicos medidos no desmane e o escore de comportamento materno não permite recomendar seu uso para estimar a reatividade pós-parto e a habilidade materna das ovelhas.Palavras-chave: cordeiros, desmame, ovinos, parição, temperamento Relation between maternal behavior score with physiological characteristics of ewes ABSTRACT -The objective of this study to assess the relationship between ewe maternal behavior score and physiological parameters related to their temperament. During lambing, 258 Corriedale and 50 Polwarth ewes were evaluated. They were raised on native pasture in the southwest region of Rio Grande do Sul State, Brazil. The effects of farm, age, type of lambing, maternal behavior scores and body condition score before lambing and during the weaning were evaluated in relation to heart rate, respiratory rate and body temperature of animals at weaning. In the first 24 hours after lambing, the maternal behavior score was assigned to the ewe as the distance from its lamb: 1) >10 meters and does not return to the lamb; 2) >10 meters from the lamb, but returns; 3) five to 10 meters; 4) between one and five meters; 5) less than one meter; 6) maintains physical contact.Ewes with maternal behavior score of <3 had a higher heart rate, but similar respiratory rates and body temperatures, compared with those with maternal behavior score >3. Sheep raised on the farm in Bagé municipality had higher heart and respiratory rates. Ewes with a body condition score before lambing of <2.0 had lower levels of...

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Section: Resultsunclassified

Relação entre o escore de comportamento materno e as características fisiológicas de ovelhas

et al. 2012

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“…[111,107,113]). The variables that show the highest degree of repeatability are similar to those in the novel arena tests i.e.…”

Section: Repeatabilitymentioning

confidence: 99%

A critical review of fear tests used on cattle, pigs, sheep, poultry and horses

Forkman¹,

Boissy

Meunier-Salaün

et al. 2007

Physiology & Behavior

752

626

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FORKMAN, B., A., BOISSY, M.-C., SALAÜN, E., CANALI, AND R.B., JONES. A critical review of fear tests used on cattle, pigs, sheep, poultry and horses. PHYSIOL. BEHAV. 000-000, 2007. Fear is arguably the most commonly investigated emotion in domestic animals. In the current review we attempt to establish the level of repeatability and validity found for fear tests used on cattle, pigs, sheep and goats, poultry and horses. We focus the review on the three most common types of fear tests: the arena test (open field), the novel object test, and the restraint test. For some tests, e.g. tonic immobility in poultry, there is a good and broad literature on factors that affect the outcome of the test, the validity of the test and its age dependency. However, there are comparatively few of these well defined and validated tests and what is especially missing for most tests is information on the robustness, i.e., what aspects can be changed without affecting the validity of the tests. The relative absence of standardized tests hampers the development of applied ethology as a science.

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“…Lamb mortality in these lines was also lower in the 'calm' ewes compared to the 'nervous' animals. Ewes previously selected for their ability to rear lambs also show behavioural differences in an approach avoidance test, indicative of increased 'calmness' [102]. Thus, temperament may also contribute to individual differences in the quality of maternal care expressed by ewes.…”

Section: Selecting For Better Mothersmentioning

confidence: 99%

From birth to colostrum: early steps leading to lamb survival

2006

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-New-born lambs have limited energy reserves and need a rapid access to colostrum to maintain homeothermy and survive. In addition to energy, colostrum provides immunoglobulins which ensure passive systemic immunity. Therefore, getting early access to the udder is essential for the neonate. The results from the literature reviewed here highlight the importance of the birth site as the location where the mutual bonding between the mother and her young takes place. Attraction to birth fluids by the periparturient ewe leads to intense licking of the lamb. Grooming not only dries, cleans and stimulates the newborn it also facilitates bonding through learning of its individual odour. Ewes having twins should ideally stay on the birth site for at least six hours in order to establish a strong bond with both lambs and favour lambs survival. However, primiparous ewes or ewes having high levels of emotivity are more likely to exhibit poor maternal behaviour. In addition, difficult parturition and weather conditions have an indirect effect on the behaviour of the mother and are other major causes of lamb death. On the lamb's side, rapid access to the udder and early suckling are extremely important. Delayed lactation or insufficient colostrum yield may be fatal especially since suckling has strong rewarding properties in the establishment of a preference for the mother, which in turn increases lamb survival. Insufficient access to the udder in mothers leaving the birth site too soon after parturition, especially in twin-bearing ewes, could also partly account for the high incidence of loss of mother-young contact and subsequent death in such lambs. Strategies to improve neonatal survival should be aimed at maximising lamb vigour, colostrum production, and mutual mother-young bonding through adequate feeding in late pregnancy and selection on behaviour.energy reserve / colostrums / suckling / maternal behaviour / bonding / ewe / lamb / nutrition / survival

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Arena behaviour of ewes selected for superior mothering ability differs from that of unselected ewes

Cited by 48 publications

References 10 publications

Relação entre o escore de comportamento materno e as características fisiológicas de ovelhas

Relação entre o escore de comportamento materno e as características fisiológicas de ovelhas

A critical review of fear tests used on cattle, pigs, sheep, poultry and horses

From birth to colostrum: early steps leading to lamb survival

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