rooster`s eye has been used a lot in shahnameh and other contexts. poets and authors, following their ancestors, have talked about it as a symbol of beautification, purity, and redness however rooster`s eye doesn’t have any of these features, nor are these features important enough to be noticed by poets. researchers have mentioned some opinions to match these features with rooster`s eye, and...

It has been demonstrated that horizontal and vertical transmission of Salmonella and Campylobacter can occur in broiler breeder flocks. The mechanism of this transmission is still unclear. Previously negative broiler breeder flocks have been reported to become positive with Salmonella, Campylobacter, or both after the introduction of "spike" roosters at 45 wk of age. To determine whether the ro...

Conservation of genetic resources by semen cryopreservation is essential for biodiversity conservation and storage rare poultry breeds. Despite the widespread use this method not all individuals presentia similar capacity to be used after defrosting. The aim current study was identify SNP markers linked candidate genes potentially associated with rooster (Gallus gallus) sperm motility cryoprese...

The main aims of this research were to study possible differences in objective morphometric sperm characteristics, establish normative sperm morphometry standards, and evaluate the presumed different subpopulation distribution of avian spermatozoa from the rooster (Gallus domesticus ) and Guinea fowl (Numida meleagris ) as model avian species. Seventy-two ejaculates (36 per species studied) wer...

Composition and thermotropic phase behavior of sperm membrane lipids from species ranging in sensitivity to cold shock were determined. Lipids from whole sperm and sperm plasma membrane were fractionated into neutral lipid, glycolipid, and phospholipid fractions. Compositional analyses were completed for free sterols, phospholipids and phospholipid-bound fatty acids. Phase transition temperatur...

Abstract Antioxidants are natural or synthetic substances that delay oxidation through one more mechanisms, such as scavenging free radicals, inhibiting lipid peroxidation, and complexing with metals, tissue destruction via oxidation. commonly used in animal feed the food industry to prevent of animal-origin products. Moreover, oxidants increasingly reproduction, especially for semen preservati...

The "cock-a-doodle-doo" crowing of roosters, which symbolizes the break of dawn in many cultures, is controlled by the circadian clock. When one rooster announces the break of dawn, others in the vicinity immediately follow. Chickens are highly social animals, and they develop a linear and fixed hierarchy in small groups. We found that when chickens were housed in small groups, the top-ranking ...

We previously reported the recovery of Campylobacter (naturally colonized) from the ductus deferens of 5 of 101 broiler breeder roosters, and four of those five positive roosters had previously produced Campylobacter-positive semen samples. Those results prompted further evaluation to determine if inoculation route influenced the prevalence or level of Campylobacter contamination of semen, the ...