The effects of in ovo feeding of carbohydrates on hatchability, BW, yolk sac weights (YSW), pectoral muscle weights (PMW), liver and pectoral muscle glycogen concentration, serum glucose level, and hepatic glucose-6-phosphatase activity of domestic pigeons, hatched from eggs laid by a 40-wk-old breeder flock, were investigated. At 14.5 of incubation, fertile eggs were injected with 200 μL of 1....

It is obvious that many birds exhibit sexual dimorphism of color. But the causal mechanisms resulting in sexual dichromatism have been well demonstrated for only a few species such as chickens and finches. Sex hormones control the plumage color and form in the brown leghorn (Greenwood and Blyth, 1938). Witschi (1935, 1937) and students have shown that within the weaver finches, three kinds of c...

The aim of the study was to observe histo-pathological effects of different arthropoda, oocyste and worms infestation on the wild pigeon naturally infected. Gastro-intestinal tract associated organs were removed from the abdomen and tissue sample of 15 birds were collected and proceed in Haematoxylin and Eosin. Fresh fecal samples were examined by direct smear method whereas egg per gram (EPG) ...

ABSTRACT: Pigeons are known for their capacity to harbor and spread several zoonotic agents. Studies have suggested that pigeons also relevant disseminators of multidrug-resistant strains. In this study, surrounding a veterinary hospital were sampled tested the presence pathogenic Escherichia coli, Salmonella spp., Staphylococcus Clostridioides (Clostridium) difficile. E. coli isolates from 19 ...

background and objectives: pigeons are extensively kept for homing and racing purposes in iran. the main objective of this study was to investigate dissemination of m. avium subsp. avium (maa) in pigeon aviaries in tabriz, north-western iran. materials and methods: postmortem pathologic specimens from thirty-nine out of 140 birds collected from private flocks (n = 3), were subjected to bacteria...

Untrained homing pigeons released on sunny days oriented homeward regardless of the direction of the release site from the loft. Similar pigeons released under total overcast vanished randomly, whereas experienced birds released on the same days at the same sites oriented homeward. Apparently untrained pigeons require the sun for orientation but experienced pigeons do not.