Enzyme complex at different levels in diets with enriched ingredients for commercial laying hens
نویسندگان
چکیده
منابع مشابه
Performance of laying hens fed on practical diets containing different levels of supplemental biotin during the rearing and laying stages.
1. The effect of biotin supplementation of low-biotin practical diets during rearing and laying stages on performance was studied in White Leghorn-type laying hens. 2. Biotin supplementation during rearing did not have any apparent effect on the condition of the bird at point-of-lay or on subsequent laying performance. 3. Biotin supplementation during lay did not have any beneficial effect upon...
متن کاملThe Possibility of Using Watermelon Waste in Laying Hens Diets
In this experiment 240 Hy-Line (W-36) laying hens from 65 to 75 weeks distributed in 5 treatments and 4 replicates (12 birds per replicate) in a completely randomized design were used. The amounts of watermelon skin meal (WSM) used to set the treatments were 0, 0.5, 1, 1.5 and 2% in 1 to 5 experimental groups. The results showed that using WSM up to 2% significantly improved the performance and...
متن کاملCalcium and phosphorus dynamics in commercial laying hens housed in conventional or enriched cage systems.
Calcium (Ca) and phosphorus (P) dynamics in Shaver White hens (19-63 wk of age) were compared between enriched (EC) and conventional cage (CC) systems. Calcium and P intake and their levels in egg components and excreta were considered. Using commercial levels of production (4,836 hens), 10 test cages/system (24 hens/test cage) were used as replicate units. Enriched cages provided a nesting are...
متن کاملExogenous Enzyme Improves Immunocompetence in Laying Hens Fed Diets Containing Safflower Meal
An experiment was conducted to study the effects of different levels of exogenous enzymes on egg quality characteristics and immunological responses of laying hens fed diets containing different levels of safflower meal. The 47-week old layers (Hy-Line W-36) were fed 10 experimental diets consisting five levels of safflower meal (0.0, 2.5, 5.0, 7.5 and 10.0%) and two levels of dietary exogenous...
متن کاملLaying performance and eggshell quality in laying hens fed diets supplemented with prebiotics and organic acids
The aim of the study was to evaluate the effect of organic acids and the prebiotic fructans on egg production and eggshell quality when added to the layer diet with different levels of calcium and phosphorus. The experiment was carried out on 168 Bovans Brown hens, allocated to 14 groups of 12 replications. Each hen (replication) was kept in an individual cage 40 cm × 40 cm in size. A 2 × 7 fac...
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ژورنال
عنوان ژورنال: Revista Brasileira de Zootecnia
سال: 2019
ISSN: 1806-9290,1516-3598
DOI: 10.1590/rbz4820180109