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Improving adjuvant systems for polyclonal egg yolk antibody (IgY) production in laying hens in terms of productivity and animal welfare
The antibody production in the egg yolks of immunized laying hens is seen as a way of improving animal welfare compared with conventional production by mammals. Immunoglobulin Y (IgY) technology, however, has still to address welfare issues linked to the widespread use of an adjuvant in vaccines. Currently, Freund’s adjuvants, complete (FCA) or incomplete (FIA), […]
Welfare assessment of rainbow trout reared in a Recirculating Aquaculture System: Comparison with a Flow-Through System
A multi-parameter analysis was applied in order to acquire an integrated and objective assessment of the effects of recirculating aquaculture systems in rainbow trout farms on a range of welfare indicators. We compared growth, cortisol and behavior in trout previously held in a Recirculating System (RS) developed in the PEIMA (Brittany, France) with optimized water […]
Conflict behavior in elite show jumping and dressage horses
Conflict behavior (CB) is a response exhibited by animals that experience difficulty coping with mental or physical discomfort and is most often demonstrated as some form of resistance to handling or training cues and/or equipment. In equestrian sport, Fédération Equestre Internationale (FEI) code of conduct for the welfare of the horse stipulates that “… horses […]
An assessment tool to help producers improve cow comfort on their farms
Effective management and an appropriate environment are essential for dairy cattle health and welfare. Codes of practice provide dairy producers with best practice guidance for the care and handling of their cattle. New Canadian recommendations have been established for the dairy industry. The objectives of this study were to develop an on-farm assessment tool that […]
Persistency of the piglet’s reactivity to the handler following a previous positive or negative experience
A central question in the stockman–animal relationship is how animals perceive humans depending on previous interactions with them. This study aimed at measuring the influence of a previous experience with humans on subsequent reactivity to humans of weaned piglets. Treatments differing in type (intrinsic vs extrinsic to the human) and valence (positive vs negative) of […]
Effect of different management techniques to enhance colostrum intake on piglets’ growth and mortality
An experiment was conducted to study the effect four different management techniques to enhance colostrum intake had on piglet and litter performance. Treatments were performed on piglets born weighing 1.30 kg or less (SP) within 6 h of birth: control group (CON); split-nursing of the litter for 2h allowing only the SP piglets free access […]
The reliability of welfare assessment according to the WelFur-protocol in the nursing period of mink (Neovison vison) is challenged by increasing welfare problems prior to weaning
The objective of this study was to test the hypothesis that the body condition of the mink dam, the frequency of dirty nests, frequency of injuries and diarrhoea change significantly with the day of assessment, post-partum, within the data collection period from parturition to weaning, influencing the scores of WelFur at criteria level, but not […]
Light colour and intensity alters reproductive/seasonal responses in Japanese quail
An extensive literature is available on the photoperiodic responses of avian species but studies on light colour and wavelength from light emitting diode (LED) sources on reproduction are limited. Hence, an experiment was designed to study the effect of different colours and intensities of light on the reproductive responses of Japanese quail. Three-week old quail […]
Assessment of the reproductive physiology of the potto (Perodicticus potto) through fecal hormone metabolite analyses and trans-abdominal ultrasonography
Potto (Perodicticus potto) reproductive biology has been minimally studied. Noninvasive endocrinology and ultrasonography are proven tools for reproductive assessment in other primates. In this study, we used fecal hormone metabolite analysis to monitor one adult male potto and four females at different life stages. Validated testosterone (T), estrone conjugate (EC), and progesterone (P4) enzyme immunoassays […]
Mother–young behaviours at lambing in grazing ewes: Effects of lamb sex and food restriction in pregnancy
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 treatments: high native pasture allowance [10–12 kg of […]