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  1. Laboratory macaques: When to wean?

    Contributor(s):: Prescott, Mark J., Nixon, Mellissa E., Farningham, David A. H., Naiken, Sandiren, Griffiths, Mary-Ann

    Worldwide there is large variation in the age at which young macaques destined for use in research are permanently separated from their mothers, and in the subsequent social environment in which they are reared. This stems from variation in minimum weaning ages and rearing practices in guidelines...

  2. Effects of environmental enrichment and loose housing of lactating sows on piglet behaviour before and after weaning

    Contributor(s):: Oostindjer, Marije, van den Brand, Henry, Kemp, Bas, Bolhuis, J. Elizabeth

    Weaning of piglets in commercial husbandry systems is earlier and more abrupt than would happen under natural conditions, resulting in low feed intakes and health and welfare problems in the immediate postweaning period. Piglets in commercial systems generally have limited opportunities to learn...

  3. Disentangling the effects of weaning stressors on piglets’ behaviour and feed intake: Changing the housing and social environment

    Contributor(s):: Hötzel, Maria J., de Souza, Gisele P. P., Costa, Osmar A. Dalla, Machado Filho, Luiz Carlos P.

    Under farming conditions piglets generally face several simultaneous stressors including separation from the dam, an abrupt change from milk to a solid diet and changes in the social and housing environments. In this study we tested the hypothesis that increasing the number of environmental...

  4. Cross-sucking by dairy calves may become a habit or reflect characteristics of individual calves more than milk allowance or weaning

    Contributor(s):: de Passillé, Anne Marie, Borderas, Fernando, Rushen, Jeffrey

    To examine the effects of milk allowance and weaning age on cross-sucking, 45 dairy calves were housed in groups of nine and fed milk and grain-based starter feed from automated feeders and allocated to three treatment groups: (A) Low-Milk Early-Weaned (fed 6L/d of milk until weaned at 47 d of...

  5. Coping personality type and environmental enrichment affect aggression at weaning in pigs

    Contributor(s):: Melotti, Luca, Oostindjer, Marije, Bolhuis, J. Elizabeth, Held, Suzanne, Mendl, Michael

    This study investigated the effects of different environmental treatments and personality types on aggression at mixing of newly weaned domestic piglets. From birth to weaning, 16 litters were housed with their dams in either barren (B) or larger, substrate-enriched (E) environments. At 15 days...

  6. Personality is associated with feeding behavior and performance in dairy calves

    Contributor(s):: Neave, H. W., Costa, J. H. C., Weary, D. M., von Keyserlingk, M. A. G.

  7. Is tail biting in growing pigs reduced by a prolonged suckling period?

    Contributor(s):: Naya, Ashley, Traulsen, Imke, Gertz, Marvin, Hasler, Mario, Burfeind, Onno, große Beilage, Elisabeth, Krieter, Joachim

    It was the aim of the study to investigate the effect of a prolonged suckling period and group housing before weaning on tail biting in undocked nursery pigs. To do this, experiments with three treatment groups were investigated. In the first group, pigs were conventionally housed in pens with...

  8. The effect of social dynamics and environment at time of early weaning on short- and long-term lamb behavior in a pasture and feedlot setting

    Contributor(s):: Pullin, Allison N., Pairis-Garcia, Monique D., Campbell, Braden J., Campler, Magnus R., Proudfoot, Kathryn L., Fluharty, Francis L.

    Lambs are commonly weaned around 60 d of age in the Eastern United States, but this age is also a time for lambs to apply long-term feeding strategies learned from adult animals. There is minimal evidence on how weaning strategies may affect long-term adaptation of feeding behavior. The objective...

  9. Gangs of piglets: Welfare and growth of imprinted and guided weaners

    Contributor(s):: Mesarec, Nikolina, Povše, Maja Prevolnik, Škorjanc, Dejan, Skok, Janko

    Weaning stress accompanied by outburst of aggression is a critical point in pig production as it compromises piglets’ welfare and leads to poor growth rate and health problems. Therefore, a weaning methods to smoothen the lactation–weaning transition are of great importance. In the present study...

  10. Gradual weaning during an extended lactation period improves performance and behavior of pigs raised in a multi-suckling system

    Contributor(s):: van Nieuwamerongen, S. E., Soede, N. M., van der Peet-Schwering, C. M. C., Kemp, B., Bolhuis, J. E.

    We studied effects of two weaning procedures on the development of pigs raised in a multi-suckling (MS) system with five sows and their litters. One MS group was subjected to a gradual weaning treatment during a lactation period of 9 wk, which included forced intermittent-suckling (IS) for 10h/d...

  11. Reprint of “Rearing piglets in multi-litter group lactation systems: Effects on piglet aggression and injuries post-weaning”

    Contributor(s):: Verdon, Megan, Morrison, Rebecca S., Hemsworth, Paul H.

    This experiment investigated the effects of rearing piglets in a multi-litter lactation system on piglet aggression at weaning. The following four pre-weaning treatments were applied to 72 sows and their litters (n=642 piglets); (1) Farrowing crate (‘FC’ − n=24 sows), (2) PigSAFE pens, in which...

  12. Gradually reducing sow contact in lactation is beneficial for piglet welfare around weaning

    Contributor(s):: de Ruyter, Emily M., van Wetter, William H. E. J., Lines, David S., Plush, Kate J.

    This study tested whether a gradual reduction in sow contact during lactation, achieved through housing the sow in a ‘sow only’ area, would influence piglet stress responses to weaning. Gradual reduction in sow contact was achieved by separating the sow from her piglets (SP, n=30) for 5, 7, and...

  13. A two-stage method to approach weaning stress in horses using a physical barrier to prevent nursing

    Contributor(s):: Merkies, Katrina, DuBois, Cordelie, Marshall, Kaitlyn, Parois, Severine, Graham, Laura, Haley, Derek

    Many domestic horses are weaned through abrupt physical separation of the foal and mare. Deviations from normal behaviours testify that this abrupt method has an adverse effect on the well-being of both mares and foals. To reduce negative changes in behaviour and physiology induced by weaning, a...

  14. Weaning and separation stress: maternal motivation decreases with litter age and litter size in farmed mink

    Contributor(s):: Malmkvist, Jens, Sørensen, Dennis D., Larsen, Torben, Palme, Rupert, Hansen, Steffen W.

    The optimal timing of separating the mink dam from the litter is suggested to be a balance between the partly conflicting needs of the mother and the kits. Early removal of the dam or partial removal of the litter may protect the dam against exhaustion. Little is, however, known about dam stress...

  15. The effect of permanent or temporary contact with the lamb and contact with males on the lambing to first ovulation interval in Saint Croix sheep

    Contributor(s):: Orihuela, Agustín, Valdez, Daniela, Ungerfeld, Rodolfo

    The effect of suckling and presence of the lamb, or ram, on the lambing to first ovulation interval in Saint Croix sheep was determined. Ten days after lambing 50 ewes and their lambs were assigned to three different suckling treatments: continuous suckling (CS), restricted suckling (RS),...

  16. Rearing piglets in multi-litter group lactation systems: Effects on piglet aggression and injuries post-weaning

    Contributor(s):: Verdon, Megan, Morrison, Rebecca S., Hemsworth, Paul H.

    This experiment investigated the effects of rearing piglets in a multi-litter lactation system on piglet aggression at weaning. The following four pre-weaning treatments were applied to 72 sows and their litters (n=642 piglets); (1) Farrowing crate (‘FC’ − n=24 sows), (2) PigSAFE pens, in which...

  17. Effects of separation time on behavioral and physiological characteristics of Brahman cows and their calves

    Contributor(s):: Pérez-Torres, Libia, Orihuela, Agustín, Corro, Manuel, Rubio, Ivette, Alonso, Miguel A., Galina, Carlos S.

    The aim of this study was to investigate the effects of separation time on behavioral and physiological characteristics of Brahman cows and their calves. Thirty Brahman cow-calf pairs raised under extensive conditions were randomly assigned to one of three temporary weaning duration:...

  18. The effect of mixing levels on aggression at weaning in piglets

    Contributor(s):: Mei, Hongyuan, Yang, Binyu, Luo, Juan, Gan, Ling

    This study was undertaken to investigate the effects of mixing levels on aggressive behaviors at weaning in piglets. In this study, 144 28-day-old piglets, which were from 24 litters, were weaned and relocated to four experimental tests with different mixing proportion (A: 6:0; B: 5:1; C: 4:2; D:...

  19. Behavioural responses to cow-calf separation: The effect of nutritional dependence

    Contributor(s):: Johnsen, Julie Føske, Mejdell, Cecilie M., Beaver, Annabelle, de Passillé, Anne Marie, Rushen, Jeffrey, Weary, Daniel M.

    There is increasing interest in keeping dairy cows with their calves during the milk feeding period, and in reducing distress associated with separation. The aim of this study was to investigate how nutritional dependence upon the cow's milk affects behavioural responses to separation by both the...

  20. Influence of low pasture allowance during pregnancy on the attachment between ewes and their lambs at birth and during lactation

    Contributor(s):: Freitas-de-Melo, Aline, Terrazas, Angélica, Ungerfeld, Rodolfo, Hötzel, Maria José, Orihuela, Agustín, Pérez-Clariget, Raquel

    Nutrient restriction during pregnancy may negatively affect ewe-lamb attachment at birth. We hypothesised that the difference in the attachment at birth could persist during lactation and, consequently, the emotional response of lambs to a short-term maternal separation test during late...