TYR (Tyrosinase) and TYRP1 (Tyrosinase-related protein 1) play crucial roles in determining the coat color of birds. In this paper, we aimed to characterize the relationship of TYR and TYRP1 genes with plumage colors in Korean quails. The SNPs were searched by cDNA sequencing and PCR-SSCP in three plumage color Korean quails (maroon, white and black plumage). Two SNPs (367T→C and 1153C→T) were ...

in order to determine the optimal levels of energy and protein in grower diet of japanese quail, 360 dayold japanese quails were used in a 3×3 factorial arrangement of dietary treatments that comprised threelevels of metabolisable energy (2750, 2850, and 2950 kcal/kg) and three levels of crude protein (24, 26and 28 percent) with four replicates per treatment in a completely randomized design. f...

the japanese quail has been utilized as a research species in establishing the genetic relationships that may also be present in other species. divergent phenotypic selection for 4-wk bw was conducted for three generations in high (hw) and low (lw) lines. within each line, 50 females and 25 males were selected among 600 birds, based on 4-wk bw. mean bw at 4 wk of age in the base generation was ...

To evaluate the action mode of Berberis vulgaris root extract in the alleviation of oxidative stress, female Japanese quails (n 180, aged 5 weeks) were reared, either at 22°C for 24 h/d (thermoneutral, TN) or 34°C for 8 h/d (heat stress, HS), and fed one of three diets: diets containing 0, 100 or 200 mg of B. vulgaris root extract per kg for 12 weeks. Exposure to HS depressed feed intake by 8·5...

AIM The objective of this study was to evaluate the effect of feeding fermented fish silage (FFS) on serum biochemical parameters of Japanese quails (Coturnix coturnix japonica). MATERIALS AND METHODS A total of 192, 7-day-old broiler Japanese quail chicks of either sex, were randomly distributed into four dietary treatments with four replicates in each group having 12 chicks in each replicat...

The effect of experimental long term hypodynamy on the structure of the adrenal glands of the Japanese quail (Coturnix coturnix japonica) was studied. Two days after hatching the quails were suspended in special shirts below the ceiling of a cage so their feet did not touch the floor. They could consume feed and water ad libitum. Animals of the same age, hatched at the same time, and fed the sa...

The origin of bursal lymphoid cells in Japanese quails was studied by means of a quantitative morphological method during a 6 to 12 day incubation period. The findings obtained in this study are summarized as follows. At 6 to 7 days' incubation, no lymphoid cells were observed in the bursal primordium. In 8 day embryonic bursa, the first appearance of lymphoid cells was found in the tunica muco...

The aim of the present study was to investigate the possibility of improvingproductive performance and immunity of growing Japanese quailreared during summer in Egypt by supplementing the diets with organic zinc (Bioplex zinc) and prebiotic (mannan oligosaccharides). Diets were a basal diet or the basal diet supplemented with 20 mg Bioplex zinc (3.0 mg Zn) (Zn1), 40 mg Bioplex zinc (6.0 mg Zn) ...

The technology drive from egg production in relationship with genetic selection makes today’s egg production quails quite different from those of a decade ago. For instance age at 5 percent production is now earlier and total egg number has increased. The quail eggs are renowned for their high biological value (George, 2002). Although it was first considered mainly as a model animal for commerc...

The present study was carried out to determine the effects of the inclusion of a spore-forming probiotic (Bacillus subtilis) in laying Japanese quail diets as an alternative to growth-promoting antibiotics to help produce healthy eggs and meat. This experiment was conducted as a completely randomized design with three treatments (control, 0.05% bacitracin methylene disalicylate (BMD), or 0.1% B...