The study was conducted to determine the effect of varying protein levels and preservation method on external egg qualities of Japanese quails. A total of 180 birds were randomly allotted into three dietary treatments in a completely randomized design (CRD) replicated six times. A factorial arrangement of 3 × 4 × 4 which involves 3 protein levels (15, 20 and 25% crude protein), 4 storage method...

the present research was designed to examine the genetic analysis of egg weight, egg yolk weight and egg albumen weight of bovan neva black laying hens at 25, 51 and 72 weeks. for this purpose, thirty birds were selected from the layer flock in the babcock university teaching and research farm. they were individually housed in separate labeled battery cage. a total of thirty eggs were collected...

an experiment was conducted to investigate the effects of using different levels of red pepper powder (rp) and marigold flower powder (mf) on egg production, egg yolk color andsome blood metabolites in laying hens. ninety, 103-weeks old laying hens were divided into 5 treatments groups of 6 birds in each cage with 3 replicates in a completely randomized design. the birds were fed a corn-soybean...

Data of four layers flocks (#31-34) from North Carolina Layer Performance and Management Test of the Department of Agriculture and Consumer Services were used in the meta-analysis to find if an increase in space allowance can affect egg production traits in white and brown layers. Effects of space allowance of 310 and 413 cm2/bird on layers performance were compared in this study. The increase ...

Abstract The research is devoted to the study of genetic parameters a less studied trait - intensity egg laying on first day female silkworm butterflies. Based experiments conducted in promising lines Line 27 and 28, it was found that variability this Cv = 15,0-15,3%, heritability coefficient h2 0,321-0,340. Also, for time, close positive correlation established between leading reproductive sig...

Transcripts representing mRNAs of three Xenopus cyclins, B1, B4 and B5, were hybridised to arrays of oligonucleotides scanning the first 120 nt of the coding region to assess the ability of the immobilised oligonucleotides to form heteroduplexes with their targets. Oligonucleotides that produced high heteroduplex yield and others that showed little annealing were assayed for their effect on tra...