Artificial illumination is an important exogenous factor in the control of many physiological and behavioral processes as well as an important environmental factor in the management of laying hens. Melatonin receptors are members of the G protein-coupled receptor family. The hormone melatonin is secreted primarily by the pineal gland, with highest levels occurring during the dark period of a ci...

Abstract This study aimed to evaluate the effects of natural tannins in laying hens’ diets on production parameters and alterations eggs’ physical properties during storage time temperature. A six weeks experiment was carried out 168 Lohmann Brown hens, 51 age, accommodated within digestibility cages, structured 3 levels. The dietary basic structure same for all tested groups. difference betwee...

The objectives of this study were to investigate the effect of dietary folic acid levels on productive performance of Baheij as a local Egyptian chicken strain and the transfer of folic acid in the eggs as related to hatchability and egg weight loss during incubation and hatched chick weight. One hundred and five laying hens and 21 cocks aged 32 weeks of age from Baheij chicken strain were rand...

Treatment of large bone defects and incurable fractures is a challenging clinical problem. A novel approaches in engineering the use adipose-derived stem cells adipose tissue. This study aimed to analyse impact autograft on process regeneration surgically created critical size defect (CSD) hen ulna. In this study, 30 laying hens at age 14 months were randomly divided into three groups: control ...

low nutritive value and suitability of barley as a feedstuff for broilers is mainly due to its non-starch polysaccharides. an experiment was carried out to evaluate if diets high in barley alter the mechanisms responsible for the absorption of nutrients across the intestinal epithelium of broilers, using d-xylose absorption test. thirty, 14-d old male broiler chicks (ross 308) with similar body...

We studied the effect of dietary source (organic or inorganic) and level of Se on the Se uptake of chick embryos. After receiving a low-Se diet for 16 wk, 126 Leghorn laying hens were randomly assigned to one of seven dietary treatments. Treatments consisted of feeding a low-Se basal diet alone or with one of three levels of added Se (0.1,0.2, or 0.3 mg/kg Se) supplied by sodium selenite or Se-...

The objective of the present study was to research the effect of feeding laying hens fish oil-supplemented diets to produce n-3-enriched eggs on their ovarian follicular development, serum lipid peroxidation, antioxidative status and immune response. A total of 105 white Bovens hens at 24 weeks of age were housed in cages in an open-sided building under a 16 h light : 8 h dark lighting schedule...

Onion and its flavonoid component, quercetin, increase bone density in rabbits, rodents, and humans. The purpose of this study was to determine whether there is a similar effect of onion on laying hens. Thirty-two Hy-line W36 White Leghorn hens at 30 weeks of age were randomly divided into 2 groups, i.e., control and treatment (n = 16). The hens were kept at 2-hen cages, each cage providing 658...

Phytogenic feed additives are used as antibacterial, anti-inflammatory and performance enhancer in the nutrition of broiler chicks. In present study, it was aimed to investigate effects usage phytogenic which an alternative antibiotics broilers at different levels rations, on morphology duodenum ileum. For this purpose, 48 male ROSS-308 one-day-old chicks were study. Chicks with a body weight 4...

This trial characterized residual feed intake (RFI) and residual maintenance requirement (RME(m)) as measures of energetic efficiency in broiler breeder hens. The RFI was defined as the difference between observed and expected ME intake and RME(m) as the difference between observed and expected maintenance requirements. A total of 600 Ross 708 1-d-old pullets were placed in floor pens. At 16 wk...