the study was conducted to evaluate the effects of different dietary oil sources supplementation on laying hens’ performance and fatty acids profile of egg yolks. seventy-two 23-week-old laying hens (tetra-sl) divided into six experimental diets (four replicates and three birds per replication) in a completely randomized design for nine weeks. experimental diets were included: 1) control (no oi...

Understanding reproductive performance in ecologically impoverished vs. more sustained anthropogenic habitats is critical to assess population health status and to develop land use and conservation management strategies. We compared resourcebased maternal effects, reproductive performance, and offspring quality in a model migratory passerine bird, the European starling (Sturnus vulgaris). We as...

Enrichment diets high in ground flax may cause irritation to the gut, which may affect absorption of omega-3 polyunsaturated fatty acids (ω-3 PUFA) from flax as well as other dietary enrichment ingredients. This study assessed the egg enrichment with ω-3 PUFA and Lutein when provided alone in the diet, in combination, or when fed in alternate day patterns. A total of 144 individually caged Lohm...

THE RECOVERY OF SALMONELLAE FROM EGG PRODUCTS WAS STUDIED, BY USE OF THREE DIFFERENT ENRICHMENT PROCEDURES: (i) selenite broth, (ii) selenite broth containing 10% sterile feces, and (iii) the lactose pre-enrichment procedure. Brilliant Green Agar was used throughout as the recovery medium. Although the lactose pre-enrichment methodology promoted Salmonella recovery from samples containing small...

Loop-mediated isothermal amplification (LAMP) assay was effective in detecting Salmonella enterica in naturally contaminated liquid egg samples. Salmonella was detected in 110 samples taken from four egg-breaking plants. The egg samples were pre-enriched in buffered peptone water (BPW) at 37 degrees C for 20 h. The selective enrichment was done in Rappaport-Vassiliadis or tetrathionate broth an...

Layers were fed diets with regular or 3 to 10 times more supplemental vitamins in an attempt to enrich eggs with these nutrients. Dietary concentrations of vitamins were chosen with the expectation of producing an egg with sufficient vitamins to achieve 50% of daily recommended intake (DRI). Eggs were assayed for all vitamins following a 90-d feeding period. There was considerable variation in ...

Welfare issues surrounding intensive farming of layer hens have long been a point of contention for producers and consumers of chicken eggs. These concerns centre mainly on whether the production advantages of conventional cage-based systems can justify the lack of environmental enrichment provided to layer hens. These issues came to a head with the 1999 announcement that conventional cages wil...

We investigated the effects of dietary supplementation of zinc (ZnO; 0, 40, 80, 120 and 160 mg/kg) and Vit E (α-tocopheryl acetate; 0 and 40 IU/kg) on egg production, egg quality and Zn content of egg fractions and tissues in Japanese quails. Using a 5 × 2 factorial design, a total of 960 Japanese quails (Coturnix coturnix japonica) at day 70 of age were housed in cages and randomly assigned in...

Vitamin D deficiency is a significant public health issue in the UK with almost one five adults having poor vitamin status and most people failing to meet Reference Nutrient Intake of 10 µg/day. There an urgent need address population through development food-based strategies. Eggs can be enriched manipulating content hens’ feed. The Sunshine project was launched 2015 Innovate funding brought t...

Females of most species of moths produce a volatile sex pheromone that attracts conspecific males over distance. In females of the polyandrous moth Heliothis virescens, feeding on carbohydrate (e.g. nectar) supplies precursor, via hemolymph trehalose, for both sex pheromone and egg production. With limited carbohydrate acquisition these two reproductive physiologies might compete for hemolymph ...