this experiment was designed to evaluate the effects of different sources of calcium at different rates and cholecalciferol(vitamin d3) on the performance and egg quality of hy-line w-36 laying hens. in this study a total of 648 hens were managed in a completely randomized design using a factorial arrangement of 3 × 3 × 2 treatments, with three calcium sources (oyster shell, os; ground limeston...

There are various studies on AGP substitute feed additives that provide many options for solutions related to the problem of maintaining gut health. Therefore, it is necessary a fundamental evaluation use some response livestock. The purpose this engineering practice find best solution growth promoter antibiotics (AGP) alternatives can be effectively used in laying hens Farm. Trials several pro...

This study was conducted to investigate the effects of using whole wheat in choice feeding on performance, egg quality, and income laying hens. In study, a total 160-Hyline W-80 white commercial hens aged 28 weeks were divided into four treatment groups fed for 84 days. The as follows: 1) Control (C, standard hen feed), 2) C feed+choice continuously with separate cup (CW), 3) feed+weekly interm...

Poultry is one of the most important subsectors livestock, supplying a cheap source good quality animal protein in form meat and eggs. This study was conducted to assess egg fertility, hatchability parameters indigenous chickens Hulla, Aleta Wondo Dale districts, representing highland, midland lowland agroecologies, respectively. Six kebeles (two from each district) were purposively selected ba...

<em>Tenebrio molitor L</em> is one of the alternative feed ingredients because it rich in nutrients, namely protein, vitamins, minerals (calcium), energy, and fat. also contains 33.64±0.22% omega-3, so hoped that eggs produced contain omega-3. In this study 300 Lohman Brown laying hens 20-week-old were used. Completely randomized design (CRD) was applied with 3 treatments 10 replica...

A total 2400 hatching eggs were obtained from Japanese quails breeders ranged from 100 to 150 days of age used to analyze the effect of shell color on fertility, hatchability, embryonic mortality and malposition as well as internal and external egg quality. Results revealed that shell color had significant effect on fertility and scientific hatchability while it doesn't affect commercial hatcha...

Availability of the complete genome sequence as well as high-density SNP genotyping platforms allows genome-wide association studies (GWAS) in chickens. A high-density SNP array containing 57,636 markers was employed herein to identify associated variants underlying egg production and quality traits within two lines of chickens, i.e., White Leghorn and brown-egg dwarf layers. For each individua...

This study was conducted to determine effects of dietary NaHCO supplementation on egg 3 production and egg quality during the late laying period. Hisex Brown layers, 54 wks of age, were blocked according to the cage location and then assigned randomly to receive one of four diets containing 0, 0.1, 0.2, or 0.4% NaHCO for 75 d. Each diet was replicated in 6 groups; each consisting of 2 cages con...

Present study was conducted to evaluate the quality traits of poultry eggs collected from various sources i.e. market, commercial farm and backyard farming, in Karachi. A total of 250 eggs were analyzed for external and internal qualities. A significant difference (p <0.05) was recorded in quality parameters except percent shell, shell thickness, egg width, egg weight, shape index and Haugh uni...