Keeping Japanese quail is an economic way for producing egg, because of their early sexual maturity (laying egg after 35 days), high egg production (250–270 eggs per year), resistance to most of poultry disease and great egg production persistency on a high level (approximately 14–18 months) (MURAKAMI and ARIKI, 1998). Japanese quail maturation happens in about 6 weeks of age and mature females...

In avians, yolk synthesis is regulated by incorporation of portomicrons from the diet, transport of lipoproteins from the liver, and release of lipids from adipose tissue; however, the extent to which lipolysis in adipose tissue contributes to yolk synthesis and egg production has yet to be elucidated. G0/G1 switch gene 2 (G0S2) is known to bind and inhibit adipose triglyceride lipase (ATGL), t...

Effect of Different Levels Phytase Enzyme and Vitamin D3 on Production Performance Egg Quality Japanese Laying Quail

Evaluation of Different Level Dietary Chromium Picolinate on Performance, Egg Quality, Some Blood Metabolite in Japanese Laying Quail

A 12-wks laying trial was conducted to study the effect of dietary chromiummethionine chelate supplementation on laying Japanese quail (Coturnix coturnix japonica) performance, egg quality, fertility %, hatchability % and some plasma constituents during summer months. A total of 225 laying Japanese quail (150 ♀+ 75 ♂) of 8 wks old were randomly assigned in 5 equal groups of 3 equal replicates e...

Quail weight and laying rate are very important parameters for quail breeders. This study aims to evaluate the growth egg-laying performance of quails from different crosses in order consider an improvement through feeding. Thus, intra inter were made between light strain heavy strain. To assess performance, it is used each crossing result, 450 one day old 120 females aged 42 days. These reared...

The present study was conducted to determine egg production traits and egg quality characteristics in black and brown lines of Japanese quail. A total of 500 quails comprising 400 females and 100 males obtained from two breeding centers were raised according to the standard procedure for Japanese quail. They were grouped in according to their plumage colours. Age at first egg-laying has been re...

Sex ratio theory suggests that females should bias offspring sex ratios based on maternal condition and the availability of critical food resources. Work in birds indicates do, indeed, according to quality quantity. Yet it is unknown whether these skews occur due fluctuations particular micro‐ or macro‐nutrients, caloric content overall even perception availability. We hypothesized dietary fats...

In a pair of experiments, we determined whether recently fertilized Japanese quail, Coturnix japonica, with less to gain from new sexual encounters than females without sperm in their sperm-storage tubules, would reduce their probability of sexual harassment by avoiding conspecific males (experiment 1) and affiliating with conspecific females (experiment 2). We found that after copulating with ...

Parthenogenesis, embryonic development of an unfertilized egg, was studied for many years in turkeys. In fact, as many as 49% of unfertilized Beltsville Small White turkey eggs develop embryos. However, no research exists on parthenogenesis in quail. The Chinese painted quail is a close relative of the more common Japanese quail and, unlike turkeys or chickens, the small Chinese painted quail r...