Performance and morphometry of the intestinal mucosa of laying hens fed diets containing xylanase
نویسندگان
چکیده
منابع مشابه
Performance and Egg Quality of Laying Hens Fed Diets Supplemented with Herbal Extracts and Flaxseed
In this experiment, the effects of fennel and thyme extracts with and without flaxseed were investigated on performance and egg quality of Leghorn-type laying hens (Hy-Line W-36). 200 laying hens from 26 to 38 weeks of age were assigned to five dietary treatments with five replications. The treatment groups were: 1) Control (a diet without any additives); 2) control diet plus fennel (40 mg/kg f...
متن کاملPerformance 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 کاملPerformance of laying hens fed diets containing DAS-59122-7 maize grain compared with diets containing nontransgenic maize grain.
An experiment using 216 Hy-Line W-36 pullets was conducted to evaluate transgenic maize grain containing the cry34Ab1 and cry35Ab1 genes from a Bacillus thuringiensis (Bt) strain and the phosphinothricin ace-tyltransferase (pat) gene from Streptomyces viridochromogenes. Expression of the cry34Ab1 and cry35Ab1 genes confers resistance to corn rootworms, and the pat gene confers tolerance to herb...
متن کاملMorphology of the intestinal mucosa and growth performance of chickens fed diets containing sugar cane extract
To investigate the growth performance and small intestinal histological changes in chickens fed sugar cane extract (SCE), 42 layer-type chicks were divided into three groups of 0, 0.05, and 0.10% dietary SCE diets. The growth performance tended to be better in all dietary SCE groups. Intestinal villus height, villus area, cell area and cell mitosis number of the duodenum showed a higher values ...
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...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Revista Brasileira de Ciência Avícola
سال: 2014
ISSN: 1516-635X
DOI: 10.1590/1516-635x1603241-248