Domestic chickens are excellent models for investigating the genetic basis of phenotypic diversity, as numerous phenotypic changes in physiology, morphology, and behavior in chickens have been artificially selected. Genomic study is required to study genome-wide patterns of DNA variation for dissecting the genetic basis of phenotypic traits. We sequenced the genomes of the Silkie and the Taiwan...

Identification of biting lice species on the infected domestic chickens and their distribution on different body regions were studied at El-Beheira Governorate. Results showed two main species of biting lice on infected chickens; the chicken body lice, Menacanthus cornutus and the shaft lice, Menopon gallinae. Statistical analysis showed significance differences in the numbers of biting lice in...

wide fluctuations of the prices of chicken and egg along with the containment of these fluctuations always matter to producers, consumers and government. these fluctuations are affected by various factors on the supply and demand sides of the product and its inputs. the results of this research are as follows: contributing 1.5 and 1 per cent to the world production of chicken (76.3 million tons...

It is well-known that environment influences DNA methylation, however, the extent of heritable DNA methylation variation following animal domestication remains largely unknown. Using meDIP-chip we mapped the promoter methylomes for 23,316 genes in muscle tissues of ancestral and domestic chickens. We systematically examined the variation of promoter DNA methylation in terms of different breeds,...

Yellow skin is an abundant phenotype among domestic chickens and is caused by a recessive allele (W*Y) that allows deposition of yellow carotenoids in the skin. Here we show that yellow skin is caused by one or more cis-acting and tissue-specific regulatory mutation(s) that inhibit expression of BCDO2 (beta-carotene dioxygenase 2) in skin. Our data imply that carotenoids are taken up from the c...

The present study established an efficient genome editing approach for the construction of stable transgenic cell lines of the domestic chicken (Gallus gallus domesticus). Our objectives were to facilitate the breeding of high-yield, high-quality chicken strains, and to investigate gene function in chicken stem cells. Three guide RNA (gRNAs) were designed to knockout the C2EIP gene, and knockou...

Title Thesis: EFFECTS OF MARKS ON AGGRESSION AND STRESS IN THE DOMESTIC FOWL (GALLUS GALLUS DOMESTICUS) Rachel Lynn Dennis, Master of Science, 2004 Thesis Directed By: Associate Professor, Dr. Inmaculada Estevez, Department of Animal and Avian Sciences Animals are marked for identification in a range of experiments from behavior and wildlife management, to reproduction and pharmacological studi...

This paper presents bone evidence for various pathological lesions occurring in domestic hen (Gallus domesticus L.), the first domesticated bird. They include healed fractures of a small grade exacerbated by dislocations, inflammations manifested in joints, osteopetrosis, cervical hernia and rickets. All but one of the illustrated specimens originate from archaeological assemblages found on the...

Abdul MALIK, Abd Wahid HARON*, Rosnina YUSOFF, M. NESA, Muhammad BUKAR, Azhar KASIM Department of Animal Science, Faculty of Agriculture, Islamic Kalimantan University, Banjarmasin, Indonesia Department of Veterinary Clinical Studies, Faculty of Veterinary Medicine, Universiti Putra Malaysia, Serdang, Selangor Darul Ehsan, Malaysia Department of Animal Science, Faculty of Agriculture, Universit...

A lower price on poultry meat, compared with other meats (beef, pork etc.), affects the increasing demand for poultry meat. The productivity and production cost of broiler chickens are directly related to the amount of feed fed, the proportion of crude protein in the feed, and the biological value and price of the feed. The EU produces only 30% of the protein crops used for feed; thus, the larg...