Topic
Coturnix
About: Coturnix is a research topic. Over the lifetime, 953 publications have been published within this topic receiving 23305 citations.
Papers published on a yearly basis
Papers
More filters
Journal Article•
11 citations
TL;DR: A hatchability rate of 26% is among the best of the various culture conditions examined in the present study and the embryo culture system should facilitate advances in avian biotechnology.
Abstract: The blue-breasted quail (Coturnix chinensis), the smallest species in the order Galliforms, is a candidate model animal for avian developmental engineering because it is precocious and prolific. This species requires 17 days to hatch and 8 to 9 weeks to mature to an adult body weight of about 50 g, whereas the Japanese quail (Coturnix japonica) requires 16 days to hatch and 6 to 8 weeks to mature to an adult body weight of 100 to 150 g. The early embryo is the most challenging embryonic stage in terms of culture and manipulation for avian biotechnology. We have evaluated various conditions for the culture of blue-breasted quail embryos from the blastoderm stage to hatching. A hatchability rate of 26% (10/39) is among the best of the various culture conditions examined in the present study and the embryo culture system should facilitate advances in avian biotechnology.
11 citations
TL;DR: The purpose of this research was to determine the number and size of nucleoli in the spermatocytes of the domestic chicken and the Japanese quail.
Abstract: Nucleoli are the product of nucleolus organizing region activity (NOR) of specific chromosomes. Their basic function is to synthetise ribosomal RNA precursors and promote the maturation and assemblage of preribosomal RNP molecules. Information on rRNA-coding gene activity can be provided by the analysis of the number and size of nucleoli in the prophase of the first meiotic division. The morphology and ultrastructure of a nucleolus depends, among others, on the species and cell growth cycle as well as the physiological and pathological state of an organism. The purpose of this research was to determine the number and size of nucleoli in the spermatocytes of the domestic chicken and the Japanese quail. Diverse numbers and sizes of nucleoli in the cells of the analysed birds were observed. 1-4 nucleoli were identified in chicken cells (1.91 +/- 0.63 on average) and 1-2 in quail cells (1.13 +/- 0.33 on average). For the total of 957 nucleoli observed in Gallus cells, 329 were classified as large and 628 as small. In Coturnix cells, 563 nucleoli were identified (66 large and 497 small ones). An analysis of the numbers and sizes of nucleoli can be performed at the cytogenetic level and serve as an alternative source of information on rRNA encoding gene and nucleolus organising region (NOR) activities.
11 citations
TL;DR: This study is the first demonstration of an alternatively spliced γ(c) isoform that lacks a transmembrane domain, and indicates a possibility that avian species, unlike mammals, express two different γ (c) transcripts due to alternative splicing.
11 citations
TL;DR: The survival time of erythrocytes labelled in vivo with diisopropyl phosphorofluoridate-32 P was determined for adult male and female Japanese quail using a bremsstrahlung method and gave an estimate of the rate of loss of organically-bound 32 P from the quail.
11 citations