Topic
Coturnix
About: Coturnix is a research topic. Over the lifetime, 953 publications have been published within this topic receiving 23305 citations.
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TL;DR: HS supplementation to quail diets may increase quail meat redness and meat and egg yolk omega-3 FA content and decrease cooking loss of quail meats.
Abstract: This study was conducted in two separate experiments. Experiment I was conducted to investigate the effects of hemp seed (HS) on meat quality traits, and experiment II was designed to determine egg fatty acid (FA) composition in Japanese quail (Coturnix coturnix japonica). In experiment I and experiment II treatments, groups were as follows: (i) control (not included HS0), (ii) 5% HS inclusion to diets, (iii) 10% HS inclusion to diets and (iv) 20% HS inclusion to diets. In experiment I, a total of 192 7-day-old-quail were fed with HS diets for 5 weeks, and end of the experiment I, a total of 64 quail (16 each) slaughtered and meat samples were analysed for meat colour, pH, cooking and thawing loss and FA composition. In experiment II, a total of 120 8-week-old laying quail were fed with experimental diets for 6 weeks and egg FA composition were determined. Breast meat cooking loss was significantly lower in 20% supplemented group (p < 0.01). Hemp seed inclusion to diets caused a linear and cubic increase in redness (a*) of hip meat (p < 0.01). Palmitoleic and oleic FAs were decreased with HS addition in breast meat (p < 0.05); however, linoleic and linolenic acid contents of meat were linearly increased (p < 0.01). In experiment II, the linoleic and linolenic FA contents of egg samples were linearly increased with increasing the dietary HS ratio (p < 0.01). Hemp seed addition was provided lower palmitoleic and oleic FAs in quail eggs (p < 0.05). In conclusion, HS supplementation to quail diets may increase quail meat redness and meat and egg yolk omega-3 FA content and decrease cooking loss of quail meats.
16 citations
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TL;DR: It is stated that the relative concentration of dodecane diol is indeed a very good marker for androgenicity in the uropygial gland of the male quail.
Abstract: The uropygial gland of the male quail is a sebaceous-like, androgen-dependent structure. The waxes secreted by this gland consist of fatty acids esterified by alkane-2,3-diols. In adult male quail the relative concentrations of all fatty acids were not affected by castration and testosterone treatment; but in contrast, the relative concentration of dodecane diol was found to be correlated with the androgen levels. In castrated quail administration of testosterone induced an increase in the dodecane diol percentage which was blocked by protein-synthesis inhibitors. Furthermore, the effects of testosterone were found to be neutralized by the administration of cyproterone acetate. Consequently it may be stated that the relative concentration of dodecane diol is indeed a very good marker for androgenicity in the uropygial gland of the male quail. This experimental model seems well suited for evaluating the stimulators and inhibitors of the activity of the sebaceous gland.
16 citations
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TL;DR: Prolactin seems to act at the thyroid level to inhibit thyroxine secretion, resulting in hypertrophy of the gland presumably through negative feedback, and induced fat deposition in Japanese quail.
15 citations
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TL;DR: Body weight, thyroid weight and thyroidal radioiodine (131 I) uptake were evaluated with respect to 3 lines of Japanese quail in response to 3 different dietary goitrogens, finding the existence of a compensating mechanism active in mitigating the goitrogenic effects of both thiouracil and sulfaguanidine is discussed.
15 citations
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TL;DR: Findings in this study support previous findings that Hg does reduce the reproductive potential of the female of avian species and suggest that the loss of reproductive efficiency which is caused by Hg in both male and female quail may be correlated directly to a diminution in their normal mating behavior.
Abstract: SummaryThe results of this study support previous findings that Hg does reduce the reproductive potential of the female of avian species (3, 4). Additionally, the dangers of Hg are not relegated entirely to the female, but rather it is concluded that Hg exerts an equally adverse effect on the reproductive potential of the avian male. The loss of reproductive efficiency which is caused by Hg in both male and female quail may be correlated directly to a diminution in their normal mating behavior.
15 citations