This
study was carried out to determine the effect of dietary rosehip seed (RS)
supplementation into layer diets at different levels on performance, egg
quality traits and some serum parameters. A total of 72 Lohmann layers, 46
weeks old, were divided into three treatment groups. The control group was fed
with commercial layer diet (K), and the other two groups were fed with basal
diet + 10% ground rosehip seeds (K1) and
basal diet + 15% ground rosehip seeds
(K2) for 12 weeks. The water and
feed were provided as ad-libitum during the trial. The rosehip seed
supplementation level at 15% into layer diets increased the feed consumption
and egg yield (p<0.05), and decreased the damaged egg ratio. Though some egg
quality traits such as the yolk colour, shell thickness and shell weight increased (p<0.05) in eggs from K2 group,
there were no significant differences
(p> 0.05) among the groups in respect
to other egg quality traits such as shape index, shell strength, albumen and
yolk indexes and Haugh unit values. Total cholesterol, cholesterol esters, free
fatty acids and triglyceride contents in the egg yolks from treatment groups
were not affected by
dietary treatments (p> 0.05). Serum parameters such as albumin, total
cholesterol, VLDL, triglyceride and ALT values increased (p <0.05) with the
RS supplementation at level of 15% into
layer diet. Results showed that rosehip seed supplementation into layer diets may
be beneficial to improve egg quality traits especially such as shell thickness
and to decrease damaged
egg ratio. But further investigations are needed to clarify the use of
rosehip seed in layer diets and its effects on performance, egg quality and
serum parameters.
Primary Language | English |
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Subjects | Agricultural, Veterinary and Food Sciences |
Journal Section | Research Articles |
Authors | |
Publication Date | June 30, 2019 |
Acceptance Date | May 21, 2019 |
Published in Issue | Year 2019 Volume: 34 Issue: 1 |