The effect of dietary Rhus coriaria L. on table eggs yolk nutrients composition

摘要

DOI: 10.15414/afz.2014.17.03.93–95 Received 15. May 2014 ? Accepted 5. June 2014 ? Available online 27. August 2014 The aim of the study was to analyze the effect of Rhus coriaria L. supplementation in total feed mixture on yolk nutrients composition of laying hens Hy-Line Brown. Hens at 20 weeks of age were randomly divided to two groups (10 hens per group)? control group was fed by standard total feed mixture and experimental group was fed by standard feed mixture supplemented with Rhus coriaria L. seeds (dosage 1 % in feed mixture). Experiment lasted 21 weeks. During the experiment 3 times were eggs collected (every 7 weeks after the beginning). After Rhus coriaria L. supplementation was found a tendency (P>0.05) of higher crude protein content in yolks from experimental group of hens, significantly (P<0.05) differences were found in 3 rd collection. Rhus coriaria L. addition in total feed mixture significantly (P<0.05) decrease content of crude fat in egg′s yolk, mainly in 2 rd collection (628.43 in control vs. 590.37 g.kg -1 of dry matter in experimental group). Positive effect of analyzed phytogenic additive was found in cholesterol content in egg′s yolk. Significant (P<0.05) lower content of cholesterol in yolk was found after 1 st eggs collection (12.56 in control group vs. 11.65 mg.kg -1 of yolk) and after 3 rd collection (13.29 in control group vs. 11.57 mg.kg -1 of yolk in experimental group). Rhus coriaria L. seed supplementation in the diet of laying hens had positive effect on nutrients composition of table egg′s yolk. Keywords : poultry, nutrition, additives, Rhus coriaria L., phytogenics, eggs quality