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Dried Distillers Grain with Solubles in Laying Hen and Pullet Rations
2011 •
Mahmoud Masa'deh
A study was conducted to test the inclusion rates of corn dried distillers grains with solubles (DDGS) in laying hen diets on egg production (EP) parameters for a full production cycle. Two hundred eighty-eight Bovan Single Comb White Leghorn laying hens were fed diets containing 0, 5, 10, 15, 20, or 25% DDGS from 24 to 46 wk and 47 to 76 wk of age for Phase I and Phase II, respectively. The diets were formulated to be isocaloric at 2,775 kcal/kg and 2,816 kcal/kg ME, and isonitrogenous at 16.5 and 16.0% CP for Phases I & II, respectively. Nutrient retention of both N and P were determined by the indicator methods during Phase II. Diets were replicated with 8 pens/treatment and 6 hens/pen in an unbalanced randomized complete block design. Average daily feed intake (ADFI), EP and overall weight gain were similar among treatments during the study. Egg wt. was (P = 0.064) affected by DDGS treatment during Phase I. Hens fed 0, 5, 10, 15, 20 or 25% DDGS had an average egg w/g of 60.6, 60...
Effect of low protein/low energy diet with normal calorie/protein ratio on the laying and reproductive performances of Japanese quails (Coturnix coturnix japonica)
’Mohamed Yusuf
This study was planned to determine the effect of normal protein/normal energy diet of adult Japanese quail (G1) compared with a low protein/low energy diet (G2), on some laying performances, egg quality, some reproductive performance traits, tibia ash contents, and some serum biochemical parameters. Each group was divided into 3 replicates 10 quails each, with sex ratio 1:4. The 2 diets were formulated to have the same calorie/protein ratio (145). The G1 of (20% CP and 2,900 kcal/kg diet, the second cost-effective diet G2 was 18% CP and 2,610 kcal/kg diet. The experimental period lasted 12 wk. The t-test was used to compare the values of means between the 2 groups (P < 0.05) and results indicated that dietary manipulation of G2 did not significantly (P < 0.05) differ from G1 in body weight change, daily feed intake, daily protein intake, egg production, egg weight, feed efficiency, mortality, egg shell thickness, egg albumen index, egg yolk index. Hatchability and fertility was significantly (P < 0.05) in G2 than G1, there were nonstatistical differences in hatched chick weight between G1 and G2. It was concluded that, dietary manipulation and using of 2%-low protein/low energy diets (with normal calorie/protein ratio-145) for laying Japanese quail may not affect the production.
Poultry Science
Effects of growth patterns and dietary crude protein levels during rearing on body composition and performance in broiler breeder females during the rearing and laying period
2013 •
R. Kwakkel
Poultry Science 98(E-Supplement 1)
Effect of valerian extract (Valerian officinalis) and density on performance, egg quality and stress indicators of Japanese quail hens.
2019 •
Daniel Jhonathan Huaringa Esteban
Valerian (Valerian officinalis) is a well-known medicinal plant used since ancient times and the root of this plant has sedative and hypnotic effects so it is indicated in cases of nervousness or anxiety and sleep disorders. It has been shown, moreover, that it has antispasmodic and myorelaxant effects. On the other hand, Japanese quail are characterized for its aggressiveness and stressfulness behavior and these affect the productive performance during the laying period. Therefore, this study aimed to evaluate the effect of valerian extract (Valerian officinalis) and density on performance, egg quality and stress indicators Japanese quail hens. One-hundred 80 Japanese quail hens were randomly assigned into 18 experimental units (EU). Three EU received one of the 6 treatments that resulted from the combination of 3 density (1, 2 or 3 quails per cage) and 2 valerian levels in water (0 and 4 mg/ml), All the experimental animals received a common corn-SBM based quail layer diet during a 7-wk evaluation period. Feed (mash form) and water were offered ad libitum. Feed Intake (FI), egg production (EP), egg weight (EW), egg mass (EM), egg quality (EQ) and broken eggs (BE) were recorded on a weekly bases. Stress indicators as tonic immobility (TI), heterophil/ lymphocyte (H/L) ratio and blood cortisol level (CL) were determined at the end of the experiment. The registered data was submitted to ANOVA under a Completely Randomized Design with a 3 × 2 factorial arrangement and means were separated by Tukey Test. The results showed that only FI and yolk diameter were significantly influenced (P < 0.05) by density and valerian extract, respectively. There was significant interaction (P > 0.05) between density and valerian levels for shell thickness. Quails without valerian extract and 3 animals per pen had higher (P < 0.05) CL than those from quails with valerian extract and maximum density. Of the 3 stress indicators, only the H/I was influenced (P <0.05) by the level of valerian extract. It is concluded that both density and valerian extract influence performance and egg quality and that the addition of valerian extract in the drinking water can be used to reduce the stress of quail hens raised in high density conditions.
