methenamine salts have been traditionally used in the veterinary and human medicine, but its use is sometimes associated with some side effects.toxicopathological effects of methenamine salt have always been a major concern. there is scantly information available about the lesions of methenamine compound in embryo. the objective of this study was to determine the teratogenic effects of methenam...

Extensive distribution of hazardous substances in food chain and the deleterious effect of their residues on public health are a great concern of the society. Chicken eggs, as one of the most popular food commodities, in different parts of Tehran (Iran) were analyzed for two groups of hazardous substances including some organochlorine pesticides (OC) such as aldrin, lindane, dieldrin, dichlorod...

Chicken and egg food traceability system based on NFC QR code technology was designed. The registers uploads the information of raised chickens through chicken foot ring embedded with tag. generates according to registered prints it eggs corresponding chickens. It is used for consumer users scan query relevant chickens, including breeding address, breeder record designed classic three-layer mod...

H5N2 strains of low-pathogenicity avian influenza virus (LPAIV) have been circulating for at least 17 years in some Mexican chicken farms. We measured the rate and duration of viral excretion from Pekin ducks that were experimentally inoculated with an H5N2 LPAIV that causes death in embryonated chicken eggs (A/chicken/Mexico/2007). Leghorn chickens were used as susceptible host controls. The d...

The study of development has been greatly aided by the use of the chick embryo as an experimental model. The ease of accessibility of the embryo has allowed for experiments to map cell fates using several approaches, including chick quail chimeras and focal dye labeling. In addition, it allows for molecular perturbations of several types, including placement of protein-coated beads and introduc...

Avian embryos develop and grow from energy and nutrients stored in the egg by the hen. In this sense, breeder male contribution is not important. Follicular deposition of nutrients occurs over a wide range of time, but becomes relevant during the week prior to ovulation. Amounts, but also forms, of nutrients deposited in the egg determine success of embryo development and hatching of a healthy ...