ABSTRACT
Under insufficient vitamin content in a diet of laying hens in compliance with lowered vitamins A, E and carotenoids content in an egg yolk acid- and water-soluble chitosan feeding (10 and 20 mg per 1 kg body mass) within 6-9 months did not render appreciable influence on these vitamins egg content. Long-term inclusion of a sorbent in a forage was not reflected in vitamin B2 level in a whole egg, blood serum and tissues of hens. Chitosan intake didn't lead to total lipids and phospholipids concentration in a whole egg. Under 15 per cent decrease of the sum of polyunsaturated fat acids its administration lead to 24 per cent increase of omega-3 polyunsaturated fat acids in the whole egg.
Subject(s)
Animal Feed , Chickens/growth & development , Chitosan/administration & dosage , Dietary Supplements , Egg Yolk , Food Analysis , Animal Feed/analysis , Animals , Chickens/metabolism , Chickens/microbiology , Egg Yolk/metabolism , Fatty Acids, Omega-3/analysis , Fatty Acids, Omega-3/metabolism , Female , Phospholipids/analysis , Phospholipids/metabolism , Time Factors , Vitamins/administration & dosage , Vitamins/analysis , Vitamins/metabolismABSTRACT
Real content of vitamins A, E, B1 and B2 in hen's eggs from different poultry farms and personal farm varies in wide range and differs from the data of national food chemical tables. Elevated nutritive value eggs with maximal vitamin content may be obtained from hens fed diets with optimal vitamin level. Such way fortified one egg contributes 30% of recommended daily intake of vitamin E, about 10% of vitamins A and B2, 3% of vitamin B1. Intensification of egg yolk pigmentation by means of carotenoids additives to hens ration leads to their 10-fold increase comparing with the data of food chemical tables. Coloured egg provides for 5-10% of carotenoids adequate daily intake.
Subject(s)
Animal Feed , Chickens , Eggs/analysis , Food, Fortified , Vitamins/administration & dosage , Animals , Carotenoids/administration & dosage , Carotenoids/analysis , Chickens/metabolism , Chickens/physiology , Egg Yolk/chemistry , Food Additives/administration & dosage , Nutritive Value , Pigmentation , Vitamins/analysisABSTRACT
Chitosan feeding (10 and 20 mg per 1 kg body mass) of 19 week-age laying hens during 1.5 months caused a decrease in whole egg content of vitamin A for 13% and 20% (p < or = 0.05), vitamin E--for 30%, lutein--17% and didn't effect on vitamin B2 level. Chitosan intake lead to cholesterol content 1.5-2 fold decrease and didn't influence on egg yolk lipids concentration. Low dose chitosan-receiving hens had eggs with 1.8-fold increased egg yolk phospholipids level. The most optimal dose of chitosan for the improvement of eggs nutritive value was 10 mg. Under minimal loss in vitamins its administration lead to the pronounced cholesterol decrease and marked phospholipids elevation.
