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  1. Slow and steady wins the race? No signs of reduced welfare in smaller broiler breeder hens at four weeks of age

    Contributor(s):: Lindholm, C., Calais, A., Jonsson, J., Yngwe, N., Berndtson, E., Hult, E., Altimiras, J.

    Broiler breeder chickens are commonly reared under strict feed-restriction regimes to reduce obesity-induced health and fertility problems during adult life, and are assumed to experience a reduced welfare due to the resulting hunger. In these conditions, feed competition could influence the...

  2. Dogs and their human companions: the effect of familiarity on dog-human interactions

    Contributor(s):: Kerepesi, A., Doka, A., Miklosi, A.

    There are few quantitative examinations of the extent to which dogs discriminate between familiar and unfamiliar persons. In our study we have investigated whether dogs show differential behaviour towards humans of different degrees of familiarity (owner, familiar person, unfamiliar person). Dogs...

  3. Determining the value of social companionship to captive tufted capuchin monkeys ( Cebus apella )

    Contributor(s):: Dettmer, E., Fragaszy, D.

    The objective of the study is to assess the magnitude of the psychological need for social companionship in pair-housed tufted capuchin monkeys (Cebus apella) (six males and 1 female). The classification of commodities as necessities or luxuries are included. The study directly compared the...

  4. Circadian drinking during ad libitum and restricted feeding in pygmy goats

    Contributor(s):: Rossi, R., Prete, E. del, Rokitzky, J., Scharrer, E.

    Eating and drinking of 8 pygmy goats, 3-8 years old, 30-42 kg liveweight, were recorded during ad libitum and restricted feeding conditions. During ad libitum conditions, water and feed intake occurred throughout the day with a circadian distribution of feed and water intake showing peaks at the...

  5. Complexity of behavioural sequences and their relation to stress conditions in chickens ( Gallus gallus domesticus ): a non-invasive technique to evaluate animal welfare

    Contributor(s):: Maria, G. A., Escos, J., Alados, C. L.

    A complexity analysis was performed on the behaviour time series of four groups of seven chickens (Gallus gallus domesticus) using the detrended fluctuation analysis (DFA). DFA quantifies the fractal-like correlation properties of behaviour sequences on short time scales (seconds) over active...

  6. Cross-sucking and other oral behaviours in calves, and their relation to cow suckling and food provision

    Contributor(s):: Margerison, J. K., Preston, T. R., Berry, N., Phillips, C. J. C.

    Abnormal oral behaviour in calves is believed to develop when there is a lack of opportunity to suckle, but it is unclear whether they need access to their mother or whether a multiple suckling system will suffice to prevent this behaviour from developing. Therefore, in an initial experiment, the...

  7. Effect of male-to-male aggressiveness and feed-restriction during rearing on sexual behaviour and aggressiveness towards females by male domestic fowl

    Contributor(s):: Millman, S. T., Duncan, I. J. H.

    This experiment was one part of a larger study investigating problems of aggression towards females by male broiler breeder fowl. To investigate causal mechanisms, we were interested in determining (1) if feed-restriction during rearing affects behaviour towards females at sexual maturity and (2)...

  8. Effects of qualitative and quantitative feed restriction on the activity of broiler chickens

    Contributor(s):: Nielsen, B. L., Litherland, M., Noddegaard, F.

    Diurnal patterns and time courses of activity were investigated in groups of fast-growing broilers subjected to different levels of qualitative and quantitative feed restrictions. Eight groups of 225 female Ross 208 broiler chickens were reared from 1 to 57 days of age in straw-bedded floor pens...

  9. Effects of qualitative and quantitative food restriction treatments on feeding motivational state and general activity level of growing broiler breeders

    Contributor(s):: Savory, C. J., Lariviere, J. M.

    Growing broiler breeder chickens are fed restricted rations to limit body weight at sexual maturity. This experiment tested a proposal (Brouns, F. et al. Applied Animal Behaviour Sciience (1994) 39, 215-223.) that feeding motivation is reduced by using qualitative rather than quantitative food...

  10. Expression of rooting motivation in gilts following different lengths of deprivation

    Contributor(s):: Studnitz, M., Jensen, K. H.

    Outdoor sows may be provided with a nose ring in order to prevent them from uprooting the grass. Under semi-natural conditions, sows spend 10-20% of their active time rooting. The welfare consequences of this rooting deprivation depend on the motivation of the behaviour. This experiment examines...

  11. Peri-partum posture and behaviour of gilts and the location of their piglets in lines selected for components of efficient lean growth

    Contributor(s):: McPhee, C. P., Kerr, J. C., Cameron, N. D.

    Peri-partum posture and behaviour of gilts from lines selected for different components of efficient lean growth were studied to determine if behavioural changes may have been associated with the observed responses in reproductive performance. The proportions of time that gilts expressed defined...

  12. Relationships between bunk attendance, intake and performance of steers and heifers on varying feeding regimes

    Contributor(s):: Schwartzkopf-Genswein, K. S., Atwood, S., McAllister, T. A.

    Six crossbred heifers (average weight 481+or-22 kg) and six crossbred steers (average weight 471+or-44 kg) were penned individually in pens 2 m x 5 m in size. Feeding behaviours during ad libitum (Day 0-28) and restricted intake (95% of ad libitum; Day 29-54) were derived from bunk attendance...

  13. Stereotyped pecking after feeding by restricted-fed fowls is influenced by meal size

    Contributor(s):: Savory, C. J., Mann, J. S.

    Growing broiler breeder chickens, fed routinely according to a programme of chronic food restriction, typically show increased pacing before feeding time and increased drinking and pecking at non-food objects afterwards. Expression of this behaviour is often stereotyped in form. In 2 experiments...

  14. Stereotypies in heifers are affected by feeding regime

    Contributor(s):: Redbo, I., Nordblad, A.

    The effect of giving different types of food which result in long or short feeding durations on stereotypy levels was studied. Forty-eight tethered heifers of the Swedish Red and White Breed, with an average age of 16 months, were subjected to the same treatment. During the first 2 weeks of the...

  15. Strain differences in aggressiveness of male domestic fowl in response to a male model

    Contributor(s):: Millman, S. T., Duncan, I. J. H.

    Aggressive behaviour of broiler breeder (BR) males was compared with that of males of an Old English Game strain (GA) which had been bred for fighting. In addition, aggressive behaviour of males of a commercial laying strain (LR) reared under the same level of feed restriction recommended for...

  16. The development of intersucking in dairy calves around weaning

    Contributor(s):: Keil, N. M., Langhans, W.

    Intersucking, i.e. sub-adult or adult cattle sucking at the udder of herd-members, is a problem often reported in dairy herds that leads to udder health problems. The causes of intersucking are virtually unknown, and until now all available countermeasures treat only the symptoms of this...

  17. The effect of nose rings on the exploratory behaviour of outdoor gilts exposed to different tests

    Contributor(s):: Studnitz, M., Jensen, K. H., Jorgensen, E.

    Rooting behaviour appears to be an important part of the behavioural repertoire in pigs. It is suggested that it is in fact a behavioural need. The present study investigated whether nose-ringed gilts, which are unable to root, can satisfactorily substitute rooting with other exploratory...

  18. Assessing dominance in sheep in a competitive situation: level of motivation and test duration

    Contributor(s):: Erhard, H. W., Fabrega, E., Stanworth, G., Elston, D. A.

    The dominance structure in an established group of sheep is often difficult to determine in the field, because of the low frequency of agonistic interactions, often resulting in some pairs of animals not interacting at all in the observation period. A solution to this problem is to test each pair...

  19. Consequences of different suckling systems for reproductive activity and productivity of cattle in tropical conditions. (Special issue: Suckling)

    Contributor(s):: Galina, C. S., Rubio, I., Basurto, H., Orihuela, A.

    The late onset of ovarian activity in mature cattle raised under tropical conditions is the major setback impeding sound reproductive performance needed to meet the increasing demand for livestock products in the area. The effect of suckling has been cited as one of the most important factors...

  20. Running in a running wheel substitutes for stereotypies in mink ( Mustela vison ) but does it improve their welfare?

    Contributor(s):: Hansen, S. W., Damgaard, B. M.

    This experiment investigated whether access to a running wheel affects the development of stereotypies during restricted feeding and whether selection for high or low levels of stereotypy affects the use of the running wheel. Sixty-two female mink kept in standard cages and selected for high or...