A5008770509- Animal Nutrition and Physiology
- Livestock and Poultry Management
- Meat and Animal Product Quality
- Animal Behavior and Welfare Studies
- Aquaculture Nutrition and Growth
- Effects of Environmental Stressors on Livestock
- Rabbits: Nutrition, Reproduction, Health
- Antioxidant Activity and Oxidative Stress
- Bird parasitology and diseases
- Spectroscopy and Chemometric Analyses
- Agriculture Sustainability and Environmental Impact
- Animal Vocal Communication and Behavior
- thermodynamics and calorimetric analyses
- Animal Genetics and Reproduction
- Agriculture and Biological Studies
- Pharmacological Effects and Assays
- Endometriosis Research and Treatment
KU Leuven
2013-2015
Agence Nationale de Sécurité Sanitaire de l’Alimentation, de l’Environnement et du Travail
2013-2014
The zootechnical performances of broilers at the end rearing period depend in part on quality day-old chicks placement. is highly affected by incubation conditions, hatch time (which determines spent hatcher under high temperature and humidity), handling after hatch. This article first presents an overview most relevant pre-incubation factors that affect chick quality: egg size, weight, eggs, sex embryos, age breeders, conditions duration storage. It then reviews important time, hatchability...
This study was conducted to evaluate the effect of a 12-h light, dark (12L : 12D) photoperiod green light during day 1 18 incubation time, on embryo growth, hormone concentration and hatch process. In test group, monochromatic provided by total 204 light-emitting diodes (522 nm) mounted in frame which placed above top tray eggs give even spread illumination. No light–dark cycle used control group. Four batches (n=300/group per batch) from fertile Ross 308 broiler breeders were this...
This experiment studied the effect of transportation duration 1-d-old chicks on dehydration, mortality, production performance, and pododermatitis during growout period. Eggs from same breeder flock (Ross PM3) were collected at 35, 45, 56 wk age, for 3 successive identical experiments. In each experiment, newly hatched received 1 treatments hatchery before placement in on-site rearing facility: no corresponding to direct less than 5 min (T00), or 4 (T04) 10 h (T10) transportation. The housed...
This study investigated variations in eggshell temperature (T(egg)) during the hatching process of broiler eggs. Temperature sensors monitored embryo by registering T(egg) every minute. Measurements carried out on a sample 40 focal eggs revealed drops between 2 to 6°C last 3 d incubation. Video cameras recorded and served as gold standard reference for manually labeling hatch times chicks. Comparison time individuals synchronization with 99% correlation coefficient an absolute average...
1. Previous research has reported that chicken embryos develop a functionary auditory system during incubation and prenatal sound may play an important role in embryo development alter the hatch time. In this study effects of stimulation on process, performance, blood parameters were investigated. 2. Four batches Ross 308 broiler breeder eggs incubated either control or sound-stimulated groups. The exposed to discontinuous species-specific calls by means speaker at 72 dB for 16 h day:...
Newly hatched chicks may be held longer than 48 h and experience long periods of fasting in commercial hatcheries. Limited information is known about the physiological status such situations, due to difficulty precisely recording time hatch. This study investigated effect from hatch pulling (holding period) on measures/parameters 109 broiler chicks. Fertile Ross 308 eggs were incubated a custom built small-scale incubator. The individual hatching each focal chick was determined using...
1. It has been reported that the increasing CO2 tension triggers embryo to pip air cell and emerge from egg. However, mechanism by which higher concentrations during last few days of incubation affect chick physiology hatching process is unclear. This study investigated effect up 1% pipping, on onset length hatch window (HW) quality. 2. Four batches Ross 308 broiler eggs (600 per batch) were incubated in two small-scale custom-built incubators (Petersime NV). During final 3 d incubation,...
Summary The aim of this work was to study (1) the correlation between egg weight, embryo sex and day-old chick weight with hatch time; (2) effect time on quality, body pododermatitis during rearing. Eggs from ROSS 308 breeder flocks were incubated in two 9600 egg-capacity incubators three experiments. In each experiment, forty eggs (focal eggs) randomly selected, individually weighed incubated. exact focal chicks determined using video recordings. At take-off, weighed, sexed marked a...