Selection for 8-Week Body Weight under Different Dietary Protein Levels

Divergent selection for four-week body weight in Japanese quail (Coturnix coturnix japonica): response to selection and realized heritability

The Japanese quail has been utilized as a research species in establishing the genetic relationships that may also be present in other species. Divergent phenotypic selection for 4-wk BW was conducted for three generations in high (HW) and low (LW) lines. Within each line, 50 females and 25 males were selected among 600 birds, based on 4-wk BW. Mean BW at 4 wk of age in the base generation was ...

Effect of different dietary protein levels on growth, survival and body composition of Hediste diversicolor

The aim of this study was to investigate the effect of different dietary protein levels on growth, survival and body composition of Hediste diversicolor. Three isocaloric diets with three different protein levels containing high protein (50%), medium protein (35%) and low protein (20%) were designed in three replicates in completely randomized design. Hediste worm larvae weighing 0.02±0.005g we...

Long-term Divergent Selection for 8-week Body Weight in Chickens – a Review of Experiments

In order to study the effects of long-term selection on genetic parameters, the effect of selection on selected and correlated traits and to develop lines for various physiological, biochemical and molecular genetic studies a comprehensive selection study for body weight in chickens has been conducted at the Biotechnical Faculty of University in Ljubljana. Long-term divergent selection in chick...

Evaluation of different dietary protein and energy levels on growth performance and body composition of narrow clawed crayfish (Astacus leptodactylus)

Evaluation of different dietary protein and energy levels on growth performance and body composition of narrow clawed crayfish (Astacus leptodactylus)