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Dietary bromelain supplementation for improving laying performance, egg quality and antioxidant status    
Yazarlar
Güler Yenice
Atatürk Üniversitesi, Türkiye
Hatice İskender
Artvin Çoruh Üniversitesi, Türkiye
Eda Dokumacıoğlu
Artvin Çoruh Üniversitesi, Türkiye
Prof. Dr. Özgür KAYNAR
Atatürk Üniversitesi, Türkiye
Adem Kaya
Atatürk Üniversitesi, Türkiye
Armağan Hayırlı
Atatürk Üniversitesi, Türkiye
Gürkan Sezmiş
Atatürk Üniversitesi, Türkiye
Özet
This experiment was conducted to evaluate the effects of dietary bromelain supplementation on laying performance, egg nutrient profile, serum traits and antioxidant status. A total of 96 Lohmann White laying hens (28-weeks-old) were fed diets containing different concentrations of bromelain (0, 0.15, 0.30 and 0.45 g/kg) during an 8-weeks experimental period. Each treatment was replicated in six cages. Data were analysed using the GLM Procedure, including orthogonal (control vs. bromelain) and polynomial (dose-response) contrasts statements. Bromelain supplementation did not affect the laying performance and egg quality parameters. Bromelain supplementation increased egg yolk (P < 0.0001) serum protein (P < 0.04) concentrations, decreased egg yolk triacylglycerol fraction (P < 0.0001) and serum cholesterol concentration (P < 0.0003), but did not affect egg yolk cholesterol fraction. Hens fed diets supplemented with the bromelain had higher concentrations of antioxidant enzymes (265 vs. 210 U/g protein for superoxide dismutase; 16.31 vs. 7.95 U/g Hb for glutathione peroxidase and 4.70 vs. 2.33 U/g Hb for glutathione-S-transferase; P < 0.0001) and lower malondialdehyde (114 vs. 86 nmol/ml, P < 0.05) in serum than hens fed the control diet. In conclusion, bromelain could be supplemented up to 0.45 g/kg in the laying hen diet to enhance antioxidant capacity.
Anahtar Kelimeler
Bromelain,laying hen,antioxidant status,performance,egg quality,cholesterol
Makale Türü Özgün Makale
Makale Alt Türü SSCI, AHCI, SCI, SCI-Exp dergilerinde yayımlanan tam makale
Dergi Adı European Poultry Science
Dergi ISSN 1612-9199
Dergi Tarandığı Indeksler SCI-Expanded
Makale Dili İngilizce
Basım Tarihi 06-2019
Cilt No 83
Sayfalar 1 / 16
Doi Numarası 10.1399/eps.2019.272