Effects of olive leaf extract (oleuropein) on performance, fatty acid levels of breast muscle and some blood parameters in Japanese quail (Coturnix coturnix Japonica) reared in different stocking densities

Abstract

This study was performed to determine the effects of olive leaf extract (oleuropein) on performance, fatty acid levels of breast muscle and some blood parameters in quails reared in different stocking densities. In the study, a total of 270 quail chicks (Coturnix coturnix Japanica), 15 days-old were used. The birds were randomly assigned according to 2 stocking densities (12, 18 birds/cage) × 3 oleuropein levels (0, 200, 400 ppm) including 6 treatment groups of 3 replicates while keeping the gender (135 female, 135 male) and initial weight balanced. The treatment was completed until 29 days. Stocking densities were arranged to be 100 and 150 cm2 per quail in cages. Higher stocking density negatively affected live weight, body weight gain and carcass parameters (P<0.05). Oleuropein which added to mixed feed increased body weight gain, polyunsaturated fatty acid ratio, omega 3 and 6 fatty acid levels of breast muscle, and improved feed conversion rate (P<0.05) while reducing saturated fatty acid level of breast muscle (P<0.05). Consequently, dietary oleuropein supplementation would improve performance and quality of breast muscle lipids by lowering saturated fatty acid proportions and by enhancing contents of polyunsaturated fatty acids in either stocking densities. According to examined parameters, a dose of 400 ppm oleuropein provided preferable results among the groups, especially in higher stocking density

Keywords

• Carcass lipids
• olive leaf extract
• performance
• quail
• stocking density

Farklı yerleşim sıklığında yetiştirilen Japon bıldırcınlarında (Coturnix coturnix Japonica) zeytinyaprağı ekstraktının (oleuropein) performans, göğüs eti yağ asidi düzeyleri ve bazı kanparametrelerine etkisi

Abstract

Bu araştırma, zeytin yaprağı ekstraktının (oleropein) farklı yerleşim sıklığında yetiştirilen bıldırcınlarda performans, bazı kan parametreleri ve göğüs eti yağ asidi düzeylerine etkisini tespit etmek için yapılmıştır. Araştırmada 15 günlük yaşta 270 adet Japon bıldırcını (Coturnix coturnix Japonica) kullanılmıştır. Bıldırcınlar iki yerleşim sıklığı (12, 18 bıldırcın/kafes) x 3 oleropein düzeyi (0, 200, 400 ppm) olmak üzere 3 tekerrürlü 6 deneme grubuna ayrılmıştır. Gruplar başlangıç canlı ağırlığı ve cinsiyet (135 dişi, 135 erkek) bakımından dengelenmiştir. Deneme 29 gün sürmüştür. Yerleşim sıklıkları kafeslerde bıldırcın başına 100 ve 150 cm2 olacak şekilde düzenlenmiştir. Yüksek yerleşim sıklığı canlı ağırlık, canlı ağırlık artışı ve karkas özelliklerini olumsuz etkilemiştir (P<0.05). Karma yeme katılan oleropein canlı ağırlık artışı, göğüs eti çoklu doymamış yağ asidi oranı, omega 3 ve 6 yağ asidi düzeylerini yükseltmiş, yemden yararlanma oranını iyileştirmiş (P<0.05), göğüs eti doymuş yağ asidi düzeyini düşürmüştür (P<0.05). Sonuç olarak, her iki yerleşim sıklığında diyete katılan oleropeinin performansı ve göğüs eti lipit kalitesini; doymuş yağ asidi oranlarını azaltıp, çoklu doymamış yağ asidi düzeylerini artırarak iyileştirdiği sonucuna varılmıştır. İncelenen parametrelere göre, 400 ppm dozundaki oleropeinden özellikle yüksek yerleşim sıklığına sahip gruplarda daha iyi sonuçlar elde edilmiştir

Keywords

• Bıldırcın
• karkas lipitleri
• performans
• yerleşim sıklığı
• zeytin yaprağı ekstraktı

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