The tissue distributions of the estrogen-inducible hen oviduct transferrin receptor and the chicken embryonic erythrocyte transferrin receptor were studied. Tissue sections were investigated by immunofluorescence microscopy using specific polyclonal antisera against each receptor. The receptor originally identified and characterized in the oviduct strongly stained liver and ovary; localized sta...

External parasites most commonly infesting poultry in California include the northern fowl mite, the common poultry mite, several kinds of lice-and the chicken tick, which is often called the blue-bug in spite of the fact that it is a true tick. In some of the warmer dry areas of the state, stick-tight fleas and western hen fleas become troublesome. Losses suffered from such parasites are often...

HOWARTH, B. 1971. Transport of spermatozoa in the reproductive tract of turkey hens. Poultry Sci. 50: 84-89. LAKE, P. 1975. Gamete production and the fertile period with particular reference to domesticated birds. Symp. Zool. Soc. London 35: 225-244. MERO, K. N., • F. X. OGASAWARA. 1970. Dimensions of uterovaginal sperm-storage tubules of the chicken and their possible significance in sperm rel...

The ovalbumins of chickens, turkeys, guinea-hens, ducks, and geese show varying immunological similarities, although it is possible to distinguish the five albumins with selected sera against chicken ovalbumin (1). Furthermore, mixtures of two albumins, such as guinea-hen and duck ovalbumin, can be clearly distinguished electrophoretically (2). Marked specificities are shown by the electrophore...

Chicken metaphase chromosomes were partially purified by rate zonal centrifugation, and DNA was prepared from each of the fractions of the sucrose gradient. The DNA was digested with various restriction enzymes and subjected to electrophoresis in agarose gels. The DNA was transferred to nitrocellulose filters (as described by Southern), and the filters were hybridized with cDNA probes. Four glo...

Intensive poultry production is associated with extreme densities of birds crammed into industrial-scale hen houses. Consequently, the bird keepers are exposed to elevated concentrations of dust. Exposure to dust, containing pathogenic mycological agents, may cause exacerbate asthma, allergic alveolitis, as well as organic dust toxic syndrome. Geographic Information System (GIS) allows to view,...

A capillary electrophoresis (CE) method for the simultaneous determination of residues of six quinolones (enrofloxacin, ciprofloxacin, ofloxacin, lomefloxacin, norfloxacin, cinoxacin) in chicken, hen, and swine tissue samples were developed and validated. The sample preparation consisted of a solid phase extraction on C-18 cartridges prior to the analysis by CE with UV detection. The method was...

For a fuller understanding of the functionality of the eggshell cuticle, we conducted a detailed study using a wide array of analytical techniques (scanning and transmission microscopy), energy dispersive x-rays, and attenuated total reflection-Fourier transform infrared spectroscopy to analyze the structure, morphology, and chemical composition of this organic coating. This study shows that th...

The structural attributes of shrubland communities may provide thermal refugia and protective cover necessary for wild animals to survive. During the summers of 2002 and 2003, we evaluated the thermal environment for lesser prairie-chicken (Tympanuchus pallidicinctus Ridgway) broods in southeast New Mexico across a complex landscape that included grazed sand shinnery oak (Quercus havardii Rydb....

this study was conducted to investigate performance of native chickens produced in the centre of production and breeding of native chicken of isfahan in rural areas of isfahan province by using 1440 native pullets with age of 45 days in 4 towns and 2 climate zone of warm and cold. this study employed by coworking 60 rural families that 24 pullets with age of 45 days with ratio of 5 hen to 1 roo...