The somitic involvement in the formation of the vertebral column was examined using the chick-quail chimaera model. Single cervical somites from quail donor embryos were transplanted into similarly staged chick host embryos. Following further incubation, serial sections of variously staged embryos were stained with the Feulgen reaction to distinguish the two cell populations. Quail cells were g...

The main purpose of this study is to extend the microscopic investigations of the pecten oculi in the quail in order to add some information on the unresolved functional anatomy of this unique avian organ. The pecten oculi of the quail was studied by scanning electron microscopy. Eighteen- to-twenty two highly vascularised accordion-like folds were joined apically by a heavily pigmented bridge ...

Previous studies from this laboratory have dealt with the protein, calcium, phosphorus, vitamin D, manganese, zinc, riboflavin, niacin and choline requirements of pheasants (Scott, et al., '54, '58a, '59) . The phosphorus requirements of young Bobwhite quail also have been reported (Scott, et al., '58b). Although many studies have been made on the effects of various levels of salt in rations fo...

The fate map of the early neural plate and neural fold has been established at the cephalic level by using the quail-chick marker system (Le Douarin, 1969,1973). The experimental design comprised the replacement of definite territories belonging to the neural plate and neural folds in the chick embryo by their counterparts from quail embryos at the same developmental stage. This technique is re...

In recent years, Japanese quail meat has gained much popularity among consumers. The aim of this study was to evaluate the meat quality characteristics and nutritional composition of Nandanam Quail-III (Coturnix coturnix japonica) meat as influenced by age at slaughter. Totally twelve birds were divided into two different age groups. The birds were slaughtered and breast muscle was obtained. Th...

An F2 Japanese quail population was developed by crossing two strains (wild and white) to map quantitative trait loci (QTL) for performance and carcass traits. A total of 472 F2 birds were reared and slaughtered at 42 days of age. Performance and carcass traits were measured on all of the F2 individuals. Parental (P0), F1 and F2 individuals were genotyped with 3 microsatellites from quail chrom...

The generation of chimeric embryos is a widespread and powerful approach to study cell fates, tissue interactions, and species-specific contributions to the histological and morphological development of vertebrate embryos. In particular, the use of chimeric embryos has established the importance of neural crest in directing the species-specific morphology of the craniofacial complex. The method...

The cell types present in quail dorsal root ganglia during early development were identified using markers for neurons, glial cells, and fibroblasts (Rohrer et al., 1985). Using the quailchick transplantation technique, the potential of quail dorsal root ganglion cells to differentiate to adrenergic chromafikr cells, as identified by tyrosine hydroxylase immunostaining, was analyzed. A populati...

the objective of this study was to investigate the effects of three levels of threonine (100, 95 and 90% of nrc requirements) with or without of multi strains probiotic (primalac) on performance, carcass characteristics and blood metabolites of japanese quails. a total of 180 one-day-old male japanese quails were randomly allocated to six treatments with three replicates and 10 birds per each. ...

Precocial avian hatchlings are typically highly social and show strong species-typical preferences for the maternal calls of their own species. The influence of social contingencies on the acquisition of species-specific preferences has, however, largely been neglected. We found that exposing bobwhite (BW) quail chicks to a Japanese quail (JQ) call contingent on their own vocalizations for 5 mi...