Chicken is considered to be an excellent model for genetic studies of phenotypic and genomic evolution, with large effective population size, specialized commercial lines, and strong human-driven selection. High-density chicken SNP chips can help to achieve a better understanding of the selection mechanisms in artificially selected populations. We performed the genome-wide tests for the selecti...

The EU Commission issued a regulation in 2003, which requires all member states to implement a breeding programme for resistance to transmissible spongiform encephalopathies in sheep by selecting for specific alleles of the prion protein (PrP) gene. A key concern with regard to this regulation was that the intensive selection programmes, designed to increase resistance to scrapie, may have a ne...

in this study, production, reproduction, management and economic parameters deduced from recordings of 5 flocks with 720 heads of native goats during an annual cycle of production in transhumance, village and farming systems were employed to determine the traits' economic values. the economic values of the traits were estimated, using maximizing profit, revenue per cost as well as minimizi...

prophet of pou1f1 (prop1) plays direct or indirect important roles in the morphogenesis of pituitary gonadotropes as well as lactotropes, somatotropes and caudomedial thyrotropes. it also controls the expression of growth hormone, prolactin and thyrotropin subunits through regulatory pit1 factor. these hormones have important influences on production traits in most animal species including the ...

health and safety are important factors in today’s life. most of studies show that consuming the chicken that has anti biotic caused different diseases like digestive vessel cancer. attention to controlled use of antibiotics can play a key role in society health which considered in the production of green chicken. planning for increasing the production of mentioned chicken needs the investigati...

in order to investigate effect of organic manure and super absorbent on physiological and biochemical traits of potato (solanum tubersum, cv marfona), a split plot experiment was conducted as randomized complete block design with three replications at research farm, agriculture college, university of razi in 2010. main factor included two levels of super absorbent a200 (0 and 70 kg/ha,) and spl...