Subclinical immunosuppression in chickens is an important but often underestimated factor
in the subsequent development of clinical disease. Immunosuppression can be caused by …

Chickens, turkeys, and other poultry in a production environment can be exposed to
stressors and infectious diseases that impair innate and acquired immunity, erode general …

Poultry can be exposed to different kinds of immunosuppressive agents that impair health
and welfare by destroying innate and acquired immunity leading to diminished genetic …

Among the avian species, the immune system of the chicken has been studied most
extensively. There are many similarities between the general immune mechanisms of …

Non-specific immune mechanisms include the innate or inherent ways in which the chicken
resists disease. This protective system is often not considered when designing a poultry …

SUMMARY A healthy immune system is a cornerstone for poultry production. Any factor
diminishing the immune responses will affect production parameters and increase cost …

Resistance to infectious agents may depend upon innate mechanisms or acquired immune
responses. Inflammation, phagocytosis, cell-mediated immunity and antibodies are …

Two functional aspects of the avian immune system, the humoral and the cell-mediated
arms, provide the basis for the preventive and protective response against disease-causing …

Feed toxicities, dietary deficiencies, water deprivation, and excessive heat or cold are
common in commercial poultry flocks. Such environmental influences may kill directly or, far …

Abstract The 24th Poultry Science Symposium, held at the University of Reading on 18-21
September 1995, discussed the basic structure and function of the immune system of …