The rearing environment of layer chicks can differ greatly in degree of complexity. With the industry moving towards cage-free housing systems, greater demands are placed on the birds' cognitive abilities in order for them to find resources such as food, water and nest-boxes. Because early...

The egg production sector is in a transitional period with regard to the permitted housing systems, i.e. rearing in conventional cages under certain conditions to the complete ban of any form of cage system. The changes were caused by concern for the layer wellfare but with the expected effects on...

Treatment of large bone defects and incurable fractures is a challenging clinical problem. A novel approaches in bone engineering is the use of adipose-derived stem cells and adipose tissue. This study aimed to analyse the impact of adipose autograft on the process of bone regeneration in a...

Several studies have focused majorly on dietary evaluation, microbial contamination, and nutrient composition of dead hens and rendered spent hens, leaving out the effects of feeding poultry byproducts compost on yolk fatty acid profile, egg sensory analysis, and blood biochemistry in laying hens....

There have been few reports on morphological changes over times in the ultimobranchial glands of hens throughout the laying period, and especially the details of age-related numerical changes in calcitonin (CT)-positive cells in parenchymal regions are not clear. Therefore, in this study, using...

Poor feed efficiency (FE) in hens impacts body weight (BW) and may reflect suboptimal health. Fatty Liver Haemorrhagic Syndrome (FLHS) is mostly observed in laying hens and affects egg production and hen performance. The aim of this study was to investigate the relationships of FE and BW with organ ...

Organic fertilizers are beneficial and less expensive if applied in adequate doses. This is how the present investigation aims to determine the optimal quantity of manure from laying hens to apply to oil palm trees in the prenursery and in the nursery. To do this, different proportions of manure...

Broiler breeder hens, the parent stock of commercial broiler chickens, have poor reproductive efficiency associated with aberrant and excessive recruitment of ovarian follicles which results in sub-optimal egg production, fertility, and hatchability. The reproductive dysfunction observed in these ...

Few studies have assessed fearfulness and how it relates to feather condition and management strategies in end-of-lay hens housed in commercial aviaries. As aviary housing for laying hens grows with the phasing out of cages, there is a need to ensure the currently used methods of assessing on-farm...

The influence of the Ca and nutrient content of the diet fed from 16 to 19 wk of age, on egg production, egg quality, and tibiae mineralization, was studied in brown egg-laying hens from 16 to 63 wk of age. The experimental design was completely randomized with 4 prelay diets organized as a 2 × 2...