This study was conducted to investigate the influence of
dietary propolis and caffeic acid supplementation on performance, egg quality and serum variables of laying hens.
One hundred and ninety two, 40 weeks old, White Leghorn
hens were assigned to 6 groups with 4 replicates. Hens
were fed basal diet (control group) or 0.5, 1, 3, 6 g/kg propolis and 0.5 mg/kg caffeic acid supplemented basal diets
(treatment groups) for 12 weeks. Propolis and caffeic acid
addition did not affect live weight, feed consumption, egg
yield and feed efficiency (P>0.05). However, egg weight
increased significantly in the 0.5 g/kg caffeic acid suplemented group (P<0.01). The highest egg albumen index
and Haugh unit were determined in the 6 g/kg propolis
supplemented group (P<0.001). There were no significant
differences among control and treatment groups for serum
aspartate aminotransferase (AST), alkaline phosphatase
(ALP) and lactate dehydrogenase (LDH) activities. Addition
of propolis at different doses and caffeic acid to diet reduced serum alanine aminotransferase (ALT) (P <0.01),
triglyceride (TG) and total cholesterol (TC) levels (P<0.05)
and increased serum high density lipoprotein (HDL)
(P<0.001). Serum glucose levels were significantly low in
the 6 g/kg propolis and caffeic acid groups of than that of
the control group, but higher in the 0.5 and 3 g/kg propolis
groups (P<0.001). On the other hand, total protein
(P<0.01) and albumin (P<0.001) were low in propolis and
caffeic acid groups except 3 g/kg propolis group than control group. Propolis (excluding 1 g/kg level) and caffeic
acid increased serum calcium (Ca) and magnesium (Mg)
levels (P<0.001). However, serum inorganic phosphorus
(Pi) levels were not affected by treatments. In addition,
serum malondialdehyde (MDA) levels decreased in groups
supplemented with 3 and 6 g/kg propolis and 0.5 mg/kg
caffeic acid (P <0.01). As a result, the addition of propolis
to the diet of laying hens effected positively egg quality and
some serum parameters without adversely affecting performance
Primary Language | Turkish |
---|---|
Subjects | Health Care Administration |
Journal Section | Research Reports |
Authors | |
Publication Date | December 25, 2018 |
Submission Date | June 1, 2018 |
Published in Issue | Year 2018 Volume: 27 Issue: 3 |