Coturnix

About: Coturnix is a research topic. Over the lifetime, 953 publications have been published within this topic receiving 23305 citations.

The effect of temperature and diet on the fatty acid composition of Japanese quail

Abstract: 1. 1. Japanese quail were fed 0, 2 or 4% linoleic acid diets from time of hatching and were acclimated to 10, 23 or 42°C. 2. 2. Myristic, palmitic, palmitoleic, stearic, oleic, linoleic, eicosatrienoic and arachidonic constituted more than 95 per cent of fatty acids identified in the carcasses. 3. 3. The ratio of saturated (anoic) to unsaturated (enoic) fatty acids (A/E) was demonstrated for the first time in an avian species to vary in relation to acclimation temperature. 4. 4. The level of unsaturation varied inversely with acclimation temperature. 5. 5. The data indicate that linoleic acid is an essential fatty acid for growth in this species.

Movements of Stubble Quail, Coturnix Pectoralis, From South Australian Grainfields.

Abstract: Stubble quail (Coturnix pectoralis) were ringed in the grain-growing districts north of Adelaide. Findings were consistent with the hypothesis that stubble quail are not migratory but nomadic, moving according to available food. In time of stress they disperse in all directions; stress was increased by competition for food with house mice (Mus musculus). The plague of mice in 1969 and 1970 was attributed to high rainfall in 1968.

Quality of Japanese quail (Coturnix coturnix japonica) eggs after extended refrigerated storage

Abstract: Commercial Japanese quail ( Coturnix c, japonica) eggs were stored for 0, 30, 60, 90, and 120 d at 4°C to determine the effects of storage on egg quality. Total aerobic microorganisms ( APC ) and yeast and mold ( YM ) were recovered from the same eggs using 3 different methods, including an eggshell surface rinse, eggshell crush rinse, and contents enumeration. Both APC and YM on eggshell surfaces decreased by 87% (0.9 log reduction) from 0 d to 120 d of storage. APC from crushed eggshells ranged from 2.4 to 3.1 log cfu/egg. YM were not detected in crushed eggshells until 120 d of storage where levels were 1.3 log cfu/egg. Aerobic microorganisms were found in contents of eggs stored 30, 60, or 90 d, but no YM were not detected in egg contents. Albumen pH increased from 0 to 30 d of storage (pH 8.91–9.22). Similarly, the largest decrease in albumen height was between 0 (3.9 mm) and 30 d (3.4 mm) before decreasing to 2.5 mm after 120 d storage. Yolk pH also increased with longer storage times, but the most significant increase occurred between 90 and 120 d of storage (0.49 pH unit increase). Similarly, Haugh units ( HU ) decreased with longer storage time, with the most significant changes occurring between 90 and 120 d of storage where HU decreased by 3.7. Overall, quail eggs stored for up to 120 d at 4°C had HU values above 72, placing them at AA grade by USDA standards. Findings may be of commercial interest to quail egg producers as a part of their marketing strategy.

Naturally-occurring adenovirus-associated gastrointestinal lesions in Coturnix (Coturnix coturnix) quail.

Abstract: Farm-reared Coturnix quail less than 3 weeks old showed depression, ruffled feathers, diarrhoea and high mortality. Histological examination revealed basophilic intranuclear inclusion bodies mainly in the digestive tract, and rarely in the liver, kidney, nasal epithelium, conjunctiva and columnar epithelial cells within the mucosa of the bursa of Fabricius. The inclusions were more numerous in the caeca than in the small intestine. Ultrastructurally, they contained many adenovirus-like particles approximately 60 nm in diameter. This is the first evidence of adenoviral inclusions in the glandular epithelium of the gizzard, conjunctiva, plical epithelium of bursa of Fabricius, and mucosal epithelium of small and large intestines in Coturnix quail.