A sudden appearance of a malignant lymphoid tumor, which we characterized as reticulum cell sarcoma, was ob served in a sequestered colony of Auburn strain 571 Japanese quails on the campus of the University of Hawaii, Honolulu. Tumor infiltrations were present in thymuses, spleens, livers, and, less commonly, in the caeca and bursa of Fabricius. In the advanced stages, other organs, such as ki...

The primary feature of vvIBDV is the ability to induce high mortality. Mortality ranges from 5% – 25% in broilers and 30% – 70% in layers. Surviving birds are severely affected with a high condemnation rate. vvIBDV induces clinical signs similar to Gumboro disease, which is induced by classical virulent strains of IBDV, except that the disease is more pronounced and acute in individual birds an...

The immunocompetent cells that can recognize foreign structures by their own actively synthesized antigen-binding receptors are the lymphocytes (1). Two major groups of lymphocytes exist, with separate functions andwithout ability to transform into each other (2, 3) . One group is called T lymphocytes, due to their dependence on the presence of the thymus for development (2). The second group o...

The immunocompetent cells that can recognize foreign structures by their own actively synthesized antigen-binding receptors are the lymphocytes (1). Two major groups of lymphocytes exist, with separate functions andwithout ability to transform into each other (2, 3) . One group is called T lymphocytes, due to their dependence on the presence of the thymus for development (2). The second group o...

Two types of strains of serotype I of infectious bursal disease virus (IBDV) have been described, on the basis of their ability (IBDV-TC) or inability (IBDV-BU) to infect chicken embryonic cells in culture. However, both types infect B lymphocytes in the bursa of Fabricius of young chickens. To determine the molecular basis for tissue culture infectivity, virus recombinants with chimeric segmen...

Poultry meat is one of the most important sources protein for human consumption worldwide. Chicken and turkeys are considered as healthy because they have relatively low levels saturated fat compared with red meat. Kadaknath a native breed, found in tribal dominated Jhabua district Madhya Pradesh, India. But its priced three times more than that broiler chicken. Narmada Nidhi an improved locati...

The aim of this study was to evaluate the protective effects of the turmeric in comparison to vitamin E on bursal damages induced by salinomycin in broiler chickens. In this study, forty one day-old broiler chicks were randomly divided into four treatment groups: 1- basal diet as control, 2- basal diet plus salinomycin, 3- basal diet plus salinomycin (SLM) and vitamin E (Vit. E) and 4- basal di...

The vast majority of lymphocytes generated daily in the chicken bursa of Fabricius do not emigrate to the periphery but die in situ. Apoptotic cells in the bursa can be readily detected by the presence of fragmented DNA and by the large numbers of condensed cellular nuclei observed by electron microscopy. Consequently, most newly generated lymphocytes die by programmed cell death. We show that ...