Some effects of social deprivation on behavioral development of lambs
Contributor(s):: Zito, C. A., Wilson, L. L., Graves, H. B.
Twenty-six spring-born lambs were randomly allotted to four groups: 1) in an indoor group with their dams; 2) in individual pens with their dams; 3) in a group without dams; 4) in individual pens without dams. All were weaned at the same time at about 10 weeks of age. All were subjected to a...
Some factors involved in natural weaning processes in sheep
Contributor(s):: Arnold, G. W., Wallace, S. R., Maller, R. A.
Milk production of ewes was measured during four-hour periods each week at varying stages of lactation. Lambs were separated from the ewes during this period before being reunited and the behavioural responses of each to the other were recorded. The responses were classed according to an...
Some observations on the growth and behaviour of lambs within twin groups of different sex
Contributor(s):: Walters, J. R., Lewin, B. H.
The development of the maternal-offspring bond in sheep
Contributor(s):: Shillito-Walser, E.
The effect of lack of vision on suckling behaviour of lambs
Contributor(s):: Bareham, J. R.
Lambs which had all previously suckled were taken from their mother between 2 h and 2 days after birth and deprived of food for a variable period. When 1 of a pair of twins was blindfolded and put back either in or out of physical contact with its mother it did not suckle. Its twin with either no...
The effects of maternal influences on sheep: breed differences in grazing, resting and courtship behaviour
Contributor(s):: Key, C., Maciver, R. M.
Clun Forest and Welsh Mountain sheep were lambed over the same period in a lowland area and half the lambs were cross-fostered by the other breed. 2 wk after lambing was over, half the female lambs with their dams were transferred to fenced upland pastures, the breeds being kept separate, until...
The neonatal bond
Contributor(s):: Fraser, A. F.
The roles of sight and hearing in the lamb in the location and discrimination between ewes
Contributor(s):: Arnold, G. W., Boundy, C. A. P., Morgan, P. D., Bartle, G.
The ability of Merino lambs to find and recognise their dams when separated by 6-10 m and having the choice of 3 ewes was examined during the first 4 wk of life. In the 1st experiment, comparisons were made between normal lambs and lambs deprived of visual or auditory cues. The proportions of...
The roles played by the senses of the ewe in the location and recognition of lambs
Contributor(s):: Morgan, P. D., Boundy, C. A. P., Arnold, G. W., Lindsay, D. R.
In 2 series of experiments, the recognition of lambs over distances of less than or equal to 12 m by Border Leicester and Merino ewes depended entirely on smell, although hearing and sight were important in helping the ewe to locate her lamb. Taste and touch (around the mouth) had no part in...
Use of shelter and selection of lambing sites by shorn and unshorn ewes in paddocks with closely or widely spaced shelters
Contributor(s):: Alexander, G., Lynch, J. J., Mottershead, B. E.
In late winter sheep spent more time sheltering behind phalaris hedges set 20 m apart than behind those set 240 m apart, but spent more time behind the latter than behind plastic mesh screens set at the same distance. About half the ewes isolated themselves for lambing, which took place near...
Visual discrimination between ewes by lambs
Contributor(s):: Alexander, G., Walser, E. E. S.
Washing lambs and confinement as aids to fostering
Contributor(s):: Alexander, G., Stevens, D., Bradley, L. R.
The effects on maternal behaviour of washing lambs and of confining ewes with alien lambs for several days, were examined in groups of Merino ewes that had lambed approximately 1, 3, 9 or 27 days previously. In the 1-, 3- and 9-day groups, 25-43% of ewes refused to allow their own washed lambs to...
[I]. The importance of odour, appearance and voice in maternal recognition of the young in Merino sheep (Ovis aries)
Contributor(s):: Alexander, G., Shillito, E. E.
Ewes, released singly into a corridor between two wire mesh fences, were presented with a choice of three lambs in separate wire cages adjacent to one side of the corridor; one cage contained the ewe's own lamb. Own lambs were treated in various ways to remove or alter clues that could aid the...
A note on the consistency and specificity of lambs' responses to a stockperson and to their photograph in an arena test
Contributor(s):: Tallet, C., Veissier, I., Boivin, X.
Understanding how farm animals perceive their stockperson is a major challenge, especially for artificially reared animals which are known to show strong attraction to humans. Replacing the stockperson by its photograph in an arena test could be a useful method for standardising human stimuli....
Ability of lambs to learn about novel foods while observing or participating with social models
Contributor(s):: Thorhallsdottir, A. G., Provenza, F. D., Balph, D. F.
The influence of different social models on the intake of novel feeds; rolled barley, the live shrub Amelanchier alnifolia and a maize grain pellet containing lithium chloride by lambs, 6 to 7 weeks old was studied. Lambs that ate novel feeds for 16 min/day for 5 days with their mothers ate about...
Conditioning ewes and lambs to increase consumption of spotted knapweed
Contributor(s):: Whitney, T. R., Olson, B. E.
Spotted knapweed (Centaurea maculosa Lam.) is an invasive plant that alters species composition and grazing value of rangelands in the northwestern United States. The spread of invasive plants may be reduced by using livestock as a biological control. We determined if mature ewes and their lambs...
Dietary habits and social interactions affect choice of feeding location by sheep
Contributor(s):: Scott, C. B., Provenza, F. D., Banner, R. E.
12 lambs that had been reared together were separated into 2 groups of 6 lambs; groups were conditioned to prefer sorghum (Sorghum bicolor) or wheat (Triticum aestivum) grains by feeding for 14 days. Lambs were conditioned to avoid the other grain by administering a mild dose of lithium chloride...
Does the use of a device to measure heart rate affect the behavioural responses of lambs to humans?
Devices used to measure cardiac activity (elasticized belt, electrodes, etc.) in standardised behavioural tests could be stressful for the animals, and therefore affect their responses. Preliminary habituation to the device is not always possible. To date, the impact of carrying such devices has...
Early post-natal behaviour in lambs of ten breeds
Contributor(s):: Slee, J., Springbett, A.
Activity and sucking behaviour during the first hour after birth, and rectal temperature were recorded in 297 lambs of 10 breeds: Scottish Blackface, Welsh and Cheviot (hill breeds); Oxford, Border Leicester, Southdown, Merino and Finn (lowland); Soay and Boreray Blackface (feral). Two components...
Effect of early dietary experiences on the development of feeding preferences in semi-intensive sheep farming systems - a brief note
Contributor(s):: Simitzis, P. E., Bizelis, J. A., Deligeorgis, S. G., Feggeros, K.
The crucial role of the periweaning period in the development of lamb feeding preferences was examined in the present study. Twenty-four female lambs were fed with a commercial diet, supplemented with oregano essential oil (1 ml/kg) between the 15th and 55th day of their life, in the absence of...