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  1. The effect of a gradual separation from the mother on later behavioral, immune and endocrine alterations in artificially reared lambs

    Contributor(s):: Sevi, A., Caroprese, M., Annicchiarico, G., Albenzio, M., Taibi, L., Muscio, A.

    The aim of the experiment was to compare the welfare and weight gains of artificially reared lambs when gradually separated from their mothers or separated from them early and immediately or gradually moved from maternal to reconstituted milk. Forty Comisana lambs were assigned to a control...

  2. The genetics of temperament in merino sheep and relationships with lamb survival

    Contributor(s):: Plush, K. J., Hebart, M. L., Brien, F. D., Hynd, P. I.

    Investigations were made into the genetics of several temperament traits in Merino ewes, with particular emphasis on those aspects which might be associated with maternal behaviour at lambing and consequently, the postnatal survival of lambs. If a beneficial relationship between ewe temperament...

  3. Validation of a method for assessment of an acute pain in lambs

    Contributor(s):: Molony, V., Kent, J. E., McKendrick, I. J.

    Acute pain following different methods of rubber ring castration and tail docking (CTD) was assessed using behavioural and physiological methods. Validity was determined by showing how accurately lambs were allocated, to their appropriate treatment groups. Six groups of seven lambs, 5-6 days old,...

  4. A review of the behavioural and physiological adaptations of hill and lowland breeds of sheep that favour lamb survival

    Contributor(s):: Dwyer, C. M., Lawrence, A. B.

    Extensively managed animals, often living in harsh and unfavourable environments, need specific adaptations that promote survivability. This is particularly important at parturition and during the neonatal period, when ewe and lamb mortality is highest. To understand the survival adaptations of...

  5. Acute effects of mulesing and alternative procedures to mulesing on lamb behaviour

    Contributor(s):: Edwards, L. E., Arnold, N. A., Butler, K. L., Hemsworth, P. H.

    The practice of surgical mulesing is used as a preventative measure against flystrike in sheep. However, this practice raises welfare concerns due to the severity of the wound and the pain inflicted. Alternative procedures to mulesing have been investigated, but few of these studies have...

  6. Are double bunks used by indoor wintering sheep? Testing a proposal for organic farming in Norway

    Contributor(s):: Hansen, I., Lind, V.

    The frequency with which ewe lambs lay on wooden surfaces at two levels, called "double bunks," was documented by video recording at 6, 11 and 18 months of age: the number in each of 4 pens (n=4) lying either on double bunks (DBs) or on the expanded metal floor (EMF) was recorded. At 6 months,...

  7. Artificial selection of rams for sexual performance and its effect on the sexual behavior and fecundity of male and female progeny

    Contributor(s):: Bench, C. J., Price, E. O., Dally, M. R., Borgwardt, R. E.

    The objective of this study was to determine the effect of a single generation of artificial selection for sexual performance in rams on the sexual behaviour and fecundity of their male and female progeny. Ninety-two ram lambs born to sires selected for either high or low sexual performance were...

  8. Behavioural relationships between Djallonke and Sahellian ewes and their lambs during the first 24 h post-partum

    Contributor(s):: Asante, Y. A., Oppong-Anane, K., Awotwi, E. K.

    Djallonke, Sahellian crossbred ewes and their lambs were tested to find out their behavioural response to separation and their mutual recognition within the first 24 h post-partum. To determine whether age, sex, birth weight of lambs and parity of dams had an effect on these post-partum...

  9. Can emotional reactivity predict stress responses at slaughter in sheep?

    Contributor(s):: Deiss, V., Temple, D., Ligout, S., Racine, C., Bouix, J., Terlouw, C., Boissy, A.

    The slaughter period is very complex and may represent different types of stress for the animal. The way and extent animals react to these stress factors depend on their individual emotional reactivity. The objective of the present study was to determine in sheep relationships between reactivity...

  10. Effects of mulesing and alternative procedures to mulesing on the behaviour and physiology of lambs

    Contributor(s):: Hemsworth, P. H., Barnett, J. L., Karlen, G. M., Fisher, A. D., Butler, K. L., Arnold, N. A.

    Mulesing involves the surgical removal of skin adjacent to the perineum and tail without anaesthesia or analgesia in lambs. This procedure was developed to reduce the risk of flystrike (cutaneous myiasis) around the perineum. Alternative interventions to mulesing have historically been...

  11. Effects of sex, litter size and periconceptional ewe nutrition on the ewe-lamb bond

    Contributor(s):: Hernandez, C. E., Matthews, L. R., Oliver, M. H., Bloomfield, F. H., Harding, J. E.

    Undernutrition restricted to the time around conception in sheep alters endocrine and metabolic responses in the offspring. Studies in rats suggest that such an early insult can also alter the behaviour of the offspring. We studied the effects of mild maternal periconceptional undernutrition...

  12. Ewe-ewe and ewe-lamb behaviour in a hill and a lowland breed of sheep: a study using embryo transfer

    Contributor(s):: Dwyer, C. M., Lawrence, A. B.

    The social behaviour of Suffolk and Scottish Blackface ewes was investigated over 2 years in 2 different environments. The effect of lamb behaviour on the behaviour of the ewe was investigated in an embryo transfer study between the breeds resulting in 4 combinations of ewe and lamb (25 Blackface...

  13. Ewes are more attentive to their offspring experiencing pain but not stress

    Contributor(s):: Hild, S., Clark, C. C. A., Dwyer, C. M., Murrell, J. C., Mendl, M., Zanella, A. J.

    The goal of this experiment was to detect if maternal care by ewes could be effective in mitigating psychological or physiological stress or pain in their offspring. We hypothesised that ewes are able to recognise when their offspring undergo an adverse experience and will adapt their maternal...

  14. Maternal presence limits the effects of early bottle feeding and petting on lambs' socialisation to the stockperson

    Contributor(s):: Boivin, X., Boissy, A., Nowak, R., Henry, C., Tournadre, H., Neindre, P. le

    Mothered herbivores are more fearful towards humans than those reared artificially. However, in previous studies, both human contact and maternal environment factors have been confounded. This paper investigates the influence of early human contact (petting, bottle feeding) given to lambs (n=48)...

  15. Nutritional context influences preferences of lambs for foods with plant secondary metabolites

    Contributor(s):: Baraza, E., Villalba, J. J., Provenza, F. D.

    An herbivore's nutritional state while foraging may affect its preferences for a chemically defended plant. Increased preference or avoidance of diets with different plant secondary metabolites (PSM) may influence foraging in ways that cannot be predicted solely by the isolated effect of a PSM....

  16. The behavioural, physiological and immunological responses of lambs from two rearing systems and two genotypes to exposure to humans

    Contributor(s):: Goddard, P. J., Fawcett, A. R., Macdonald, A. J., Reid, H. W.

    96 lambs of 2 genotypes (Scottish Blackface: BF and Texel x (Blue-faced Leicester x Scottish Blackface): T) were studied. From birth to weaning 1 of 2 management regimes was applied: extensive (E), whereby animals were handled as little as possible or semi-intensive (I), in which lambs...

  17. The effect of age at mating on the behavioural interactions between primiparous Djallonke ewes and their lambs at 36 h post-partum

    Contributor(s):: Awotwi, E. K., Canacoo, E. A., Adogla-Bessa, T., Oppong-Anane, K., Oddoye, E. O. K.

    Primiparous Djallonke ewes mated at 12, 15, 18 and 21 months and their single-born lambs were tested to determine their behavioural response to separation and their mutual recognition at 36 h post-partum. An analysis of variance was used to determine whether the age at mating had an effect on...

  18. The effects of age and sex on pain sensitivity in young lambs

    Contributor(s):: Guesgen, M. J., Beausoleil, N. J., Minot, E. O., Stewart, M., Jones, G., Stafford, K. J.

    Lambs routinely undergo painful husbandry procedures including ear tagging, tail docking and castration. Pain early in life is important because it can compromise lamb welfare. Studies of altricial species, such as rodents and humans, suggest that baseline pain sensitivity varies with age and...

  19. The presence of the dam affects the efficiency of gentling and feeding on the early establishment of the stockperson-lamb relationship

    Contributor(s):: Boivin, X., Nowak, R., Terrazas Garcia, A.

    This experiment investigates how the maternal presence influences the effect of additional human contact in early age on the reaction of lambs to their stockperson. 40 twin-born lambs were involved in this experiment during their first 4 days of life. 10 pairs of twins were reared artificially...

  20. Validation of an algorithm for real-time measurement of sheep activity in confinement by recording movement within a commercial weighing crate

    Contributor(s):: Horton, B. J., Miller, D. R.

    This study reports a method of measuring sheep activity in confinement based on recording movement of sheep during weighing. The aim was to show that an algorithm to analyse continuous weight records could be used to measure activity quickly and efficiently using commercial weighing equipment and...