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 ...

This study was aimed at determining the effects of dietary zeolite (clinoptilolite) supplementation on fattening performance, slaughter characteristics, and some blood visceral organ parameters in Japanese quails. For this purpose, 140 (4x35) four-day-old quail chicks (Coturnix coturnix japonica) were randomly assigned to 4 groups with replicates (9+9+9+8), continued for a period 31 days. The f...

This study was conducted to investigate the effects of artichoke powder on performance and immune function of Japanese quails poisoned with carbon tetrachloride (CCl4). One hundred meat type (1-d-old) quails were assigned randomly to 4 treatment groups (n=25). Treatment groups included with the study were: 1) control group (without artichoke supplementation or CCl4 administration, 2) group with...

This study was conducted to investigate the effects of different levels of zinc sulfate and chromium picolinate on the performance, immune response and meat quality of Japanese quails under heat stress condition. The birds (n = 540; 7-d-old) were randomly assigned to 9 treatment groups consisting of 3 replicates of 20 birds each in a 3 × 3 factorial arrangement of treatments [zinc (0, 40, 80 mg...

Subulura brumpti infection was observed in Japanese quails and caused heavy production loss up to 10%. Gross lesions were confined to caecum of the affected birds. Pathological changes suggestive of acute cecal hemorrhagic enteritis were recorded. Closer observation of the cecal loop revealed wavy movement with thousands of tiny worms. Based on morphometry, the worms were identified as S. brump...

Male Japanese quails were treated with melatonin alone or melatonin combined with D1 and D2 dopamine receptor blockers. Following the treatment, hypothalamus, pituitary glands and testes were analyzed morphometrically. The results suggest the existence of an interaction between melatonin and dopaminergic system in the brain in the regulation of reproductive processes in immature birds. The char...

This study was aimed to investigate the different effects of folic acid and/or saccharomyces cerevisiae on aspects Japanese quails. Eighty quail chicks were used, divided into four groups (20 each), first group control, treated with normal ration and drinking water. The second 2.5% in ration, third (5mg/L. water), whereas last both yeast as stated above. All treatments for seven weeks, then bir...