this experiment was conducted to evaluate the effects of different levels of crude protein and probiotic in diets on performance, egg quality  and blood biochemical and immunity parameters of laying hens. a completely randomized design with factorial method (2×4) was conducted in which two levels of crude protein (nrc and 10% lower than nrc recommendation) and 4 levels of probiotic (0, .025%, 0...

Summary Laying hen flocks undergo depopulation at end of lay, a difficult process that has been associated with injuries and is considered stressful to hens human collectors. To date, most assessments depopulations have conducted within cage housing systems, layers, or noncage broilers, thus offering little relevance laying systems including aviaries. Given the predominant in Switzerland are mu...

Conventional cage systems will be replaced by housing systems that allow hens to move freely. These systems may improve hens' welfare, but they lead to some disadvantages: disease, bone fractures, cannibalism, piling and lower egg production. New selection criteria for existing commercial strains should be identified considering individual data about laying performance and the behavior of hens....

This paper seeks to lay out a number of observations on Pervasive information systems design that have been made during the Chawton House project, an augmented field trip for school children. After laying out the Chawton House case study, the information infrastructure is described and arising issues are examined concerning design for persistence, empowerment of non technical users, and re-use.

This paper describes a complete denotational semantics, in the UTP framework, of slotted-Circus, a generic framework for reasoning about discrete timed/synchronously clocked systems. The key result presented here is a comprehensive semantics of the entire language that addresses various semantics issues that have been uncovered, whilst laying foundations for future extensions, particularly towa...

Translating the exponentially growing amount of omics data into knowledge usable for a personalized medicine approach poses a formidable challenge. In this article-taking diabetes as a use case-we present strategies for developing data repositories into computer-accessible knowledge sources that can be used for a systemic view on the molecular causes of diseases, thus laying the foundation for ...

Huoyan goose is a Chinese local breed famous for its higher laying performance, but the problems of variety degeneration have emerged recently, especially a decrease in the number of eggs laid. In order to better understand the molecular mechanism that underlies egg laying in Huoyan geese, gene profiles in the pituitary gland of Huoyan geese taken during the laying period and ceased period were...

BACKGROUND Synaptotagmin-1 (Syt1) is an abundant, evolutionarily conserved integral membrane protein that plays essential roles in neurotransmitter release and hormone secretion. Neurotransmitters secreted by hypothalamic neurons can alter GnRH (gonadotropin-releasing hormones) neuronal activity by binding to and activating specific membrane receptors in pituitary cells and, in turn, control th...

In order to study the effect of turmeric rhizome powder (TU) and enzyme in some blood parameters of laying hens, an in vivo study was conducted. In a 5 * 2 completely randomized block design with factorial arrangement, 5 levels of TU (0.0, 0.05, 0.10, 0.15, and 0.20 %) and 2 levels of enzyme (0.0, and 0.05%) with 4 blocks (replicate) , 480, 100-week old laying hens for 4 weeks fed wheat-soybean...

this study aimed to decrease the cholesterol content of egg yolk of laying hens through inclusion of barley malt rootlets in the diets. forty-two, 54-week-old, lohman laying hens were fed for a 12 weeks laying period on 3 iso-caloric and iso-nitrogenous diets contained 0 (control), 25.5 or 51.1g barley malt rootlets/kg. inclusion of barley malt rootlets at 25.5 or 51.1g/kg diet significantly de...