common chamber of a bird's body into which intestinal, urinary, and generative canals emit discharges

in avian embryology, a groove that develops when cells of the primitive streak migrate toward the middle

as applied to poultry, percentage of hatched birds that live to maturity or market

a young immature goose

scattering of feed caused by pecking action of poultry feeding

invasion of tissues by pathogenic organisms resulting in a diseased state

population of microorganisms propagated in artificial media

a feather not fully developed; a feather emerging from the skin

removing of one-third or more of the upper (and sometimes lower) beak of domesticated poultry to prevent or reduce cannibalism and fighting

relating to the proventriculus of the bird; glandular or true stomach of the bird located between the crop and gizzard

extra growth found in offspring of crosses between unrelated parents; also called heterosis

a shell that was cracked while inside the hen, with the crack being repaired inside the oviduct by an additional deposit of calcium

designates strains of microoriganisms with reduced virulence used to induce immunity

weak and ineffective

as applied to a pathogenic microscopic organism, it ability to overcome body defenses of the host

ancestry; lineage

in avian embryology, a structure at the bottom of the neural tube that is necessary for the formation of the neural tube

a young, one day to eight weeks of age, guinea fowl of either sex

solid partition placed between two different levels of egg laying cages for the purpose of collecting bird droppings from top cages

equipment upon which chicks are placed to allow them to circulate in front of operators carrying out sexing, vaccination, and other tasks

immune protein substance found in blood and produced in response to stimulation by an antigen (suspension of microorganisms)

method of killing poultry by slitting the neck vein with a sharp blade and then allowing the blood to drain from the body; the poultry processing step immediately following stunning

water suitable for drinking

in avian embryology, a chick that is not in normal position before hatching