Mother-young behaviours at lambing in grazing ewes: effects of lamb sex and food restriction in pregnancy
Contributor(s):: Freitas-De-Melo, A., Ungerfeld, R., Hotzel, M. J., Abud, M. J., Alvarez-Oxiley, A., Orihuela, A., Damian, J. P., Perez-Clariget, R.
This study investigated whether the level of pasture allowance from before conception until late pregnancy affects ewe-lamb behaviours at birth, and if those behaviours differ according to the sex of the lambs. We performed two experiments, in which 96 ewes were assigned to one of two nutritional...
Effects of stage of gestation at mixing on aggression, injuries and stress in sows
Contributor(s):: Stevens, B., Karlen, G. M., Morrison, R., Gonyou, H. W., Butler, K. L., Kerswell, K. J., Hemsworth, P. H.
Confinement of breeding sows to stalls is a controversial welfare issue, and there is a worldwide move to house gestating sows in groups. We examined the effects of day of mixing following insemination on aggression, injuries and stress in sows. A total of 800 sows were used in this experiment...
A review of the effects of prostaglandins on sexual behavior in boars
Contributor(s):: Estienne, M. J.
Artificial insemination (AI) is the primary method of breeding sows in many countries worldwide. In general, semen for AI is collected using the gloved hand technique from boars trained to mount an artificial sow, although automated collection systems have been developed and are in use on some...
Improved acceptance of Chromonaela odorata by goat kids after weaning is caused by in utero exposure during late but not early pregnancy
Contributor(s):: Phan Vu, Hai, Schonewille, J. T., Dam Van, Tien, Everts, H., Hendriks, W. H.
The aim of the current experiment was to study the effect of the phase of pregnancy on in utero learning of Chromonaela odorata by the goat kids by comparing mid pregnancy (day 50-99, MP) with late pregnancy (day 100-145, LP). It was hypothesized that kids born to dams fed C. odorata during late...
Feeding Chromonaela odorata during pregnancy to goat dams affects acceptance of this feedstuff by their offspring
Contributor(s):: Phan Vu, Hai, Everts, H., Dam Van, Tien, Schonewille, J. T., Hendriks, W. H.
Human-animal interaction, stress, and embryo production in Bos indicus embryo donors under tropical conditions
Contributor(s):: Macedo, G. G., Zuccari Neto, C. E. S., Abreu, U. G. P. de, Negrao, J. A., Costa e Silva, E. V. da
This study investigated the effect of human-animal interaction (HAI) and the stress response on the quality of embryo production in superovulated Nelore (Bos indicus) cattle, under tropical conditions. Thirty-two females underwent a superovulation protocol for 5 days. Cortisol concentrations were...
Effect of different rearing systems and pre-kindling handling on behaviour and performance of rabbit does
Contributor(s):: Mugnai, C., Bosco, A. dal, Castellini, C.
The aim of this study was to ascertain how collective cage and pre-kindling handling (training does to go into their own nest) practices, in comparison to standard housing (single cage rearing), modify the behaviour and the performance of rabbit does. To this aim, 40 nulliparous New Zealand White...
Effects of space allowance on the welfare of dry sows kept in dynamic groups and fed with an electronic sow feeder
Contributor(s):: Remience, V., Wavreille, J., Canart, B., Meunier-Salaun, M. C., Prunier, A., Bartiaux-Thill, N., Nicks, B., Vandenheede, M.
The minimal legal space allowance for grouped pregnant sows in the EU is 2.25 m2/sow. The effect of higher space per animal on agonistic behaviour and social stress of animals living in dynamic groups is not known. Two groups of 34 pregnant Belgian Landrace sows were housed in two pens of...
Genotype rather than non-genetic behavioural transmission determines the temperament of Merino lambs
Contributor(s):: Bickell, S., Poindron, P., Nowak, R., Chadwick, A., Ferguson, D., Blache, D.
Merino ewes have been selected, over 18 generations, for calm (C) or nervous (N) temperament using an arena test and an isolation box test. We investigated the relative contributions of genotype versus the post-partum behaviour of the dam on the temperament of the lambs using a cross-fostering...