Results 151 to 160 of about 4,120 (200)

Pinealoma in a Broiler Breeder

Avian Diseases, 1986
An incidental central nervous system tumor was found in a broiler breeder. The cellular mass was histologically similar to the normal pineal gland, but it was characterized by a decreased ratio of follicular/parafollicular cells, a relative increase in mitoses, a size three times greater than a normal pineal gland, and growth and expansion into ...
D E, Swayne, G N, Rowland, O J, Fletcher
openaire   +2 more sources

Tenosynovitis in broilers and broiler breeder flocks

New Zealand Veterinary Journal, 1978
Abstract Tenosynovitis in commercial broiler breeder flocks, characterised by severe lameness, resulted in malnutrition and eventual culling of these chickens. Histologically there was metaplasia of tendons, tendon sheaths, connective tissues and infiltration with heterophils. Although Staph. aureus was isolated from some specimens, it is probable that
B S, Bains, C L, Tempest
openaire   +2 more sources

Parameters for quantification of hunger in broiler breeders

Physiology and Behavior, 2003
The commercial restricted feeding programme of broiler breeders has a major negative effect on welfare, as the birds are continuously hungry. Objective parameters of hunger are needed to evaluate new management or feeding systems that may alleviate hunger and thus improve broiler breeder welfare.
Ingrid C de Jong, Harry Blokhuis
exaly   +3 more sources

A cataract outbreak in broiler breeders

Avian Pathology, 1998
Varying degrees of lens cataract and iritis were found in birds of a flock of grandparent broiler breeders. Major histopathological findings included stromal lens alterations with liquefaction (phacolysis) and globule formation, and a lymphocytic-plasmocytic anterior uveitis.
W J, Landman, R M, Dwars
openaire   +2 more sources

Evaluation of Biosecurity in Broiler Breeders

Avian Diseases, 1987
The economic impact of management practices designed to limit the introduction of disease into a parent broiler breeder flock (biosecurity) was evaluated using benefit-cost analysis. Equations were developed to quantify the losses resulting from infection with one of four alternative categories of disease representing incremental levels of ...
D H, Gifford, S M, Shane, M, Hugh-Jones, B J, Weigler   +3 more
openaire   +2 more sources

Influenza in Commercial Broiler Breeders

Avian Diseases, 1992
Influenza was detected in a flock of broiler breeders during routine serological monitoring. Although there were no clinical signs, egg production may have been affected in hens on one story of a two-story breeder house. Intensive measures were taken to avoid transmission to other farms. Two months after the flock was found to be serologically positive,
D A, Halvorson, V, Sivanandan, D, Lauer
openaire   +2 more sources