MEHMET ÇİFTÇİ, Ülkü Gülcihan ŞİMŞEK, MEHMET ALİ AZMAN, İBRAHİM HALİL ÇERÇİ, Fadime TONBAK

The effects of dietary rosemary (Rosmarinus officinalis L.) oil supplementation on performance, carcass traits and some blood parameters of Japanese quail under heat stressed condition

Bu çalışmada, karma yeme ilave edilen biberiye (Rosmarinus officinalis L.) yağının yüksek çevre sıcaklığına (34°C) maruz bırakılan Japon bıldırcınlarında performans, karkas özellikleri ve bazı kan parametreleri üzerine etkileri araştırılmıştır. Toplam olarak 180 adet 15 günlük bıldırcın, her tekerrürde 10 bıldırcının bulunduğu 3 tekerrürlü 6 gruba ayrılmıştır. Tüm gruplar başlangıç canlı ağırlıkları ve cinsiyet bakımından dengelenmiştir. Bıldırcınlar, çalışma süresince sıcaklık kontrollü odalarda 22°Cde 24 saat/gün (termo nötral-TN) ve 22°Cde 16 saat/gün 34°Cde 8 saat/gün (9:00-17:00) (sıcaklık stresi-HS) tel kafeslerde barındırılmıştır. Deneme 2x3 faktöriyel deneme düzenine göre yapılmıştır. Bıldırcınlar temel yem (kontrol) (TN ve HS) ve temel yeme 125 ve 250 ppm biberiye yağı ilave edilen karma yemler ile beslenmiştir. En yüksek canlı ağırlık TN bölümünde 250 ppm biberiye yağı ile beslenen grupta, en düşük canlı ağırlık ise sıcaklık stresi uygulanan tarafta kontrol grubunda gözlenmiştir. Sıcaklık stresi (HS) bıldırcınların canlı ağırlığını olumsuz yönde etkilemiş (P0.05). Canlı ağırlık artışı ve yem tüketimi bakımından araştırma grupları arasında önemli farklılıklar tespit edilmemiştir (P>0.05). Yemden yararlanma oranı her iki çevre koşulunda da biberiye yağı ilave edilen gruplarda, kontrol gruplarından daha iyi bulunmuştur (P

Sıcaklık stresi altındaki Japon bıldırcınlarında karma yeme ilave edilen biberiye (Rosmarinus officinalis L.) yağının performans, karkas özellikleri ve bazı kan parametreleri üzerine etkileri

In this study, the effects of rosemary (Rosmarinus officinalis L.) oil supplementation to diet were investigated on performance, carcass traits and some blood parameters of Japanese quails exposed to a high ambient temperature of 34°C. A total of 180 fifteen-day-old quails were divided into 6 treatments consisting of 10 birds of 3 replicates. All groups were balanced according to initial live weight and gender. Birds were kept in wire cages in temperature-controlled room at either 22°C for 24 h/d (thermo neutral-TN) or 22°C for 16 h/d and 34°C (heat stress-HS) for 8 h/d (from 9:00 to 17:00) during the study. Trial was conducted as a 2x3 factorial arrangement. Birds were fed either a basal (control) diet (TN and HS) or the basal diet supplemented with 125 or 250 ppm of rosemary oil. The highest final live weight was observed in 250 ppm rosemary oil under the TN condition and the lowest was in control group of HS. HS condition affected negatively on quail live weight (P<0.05), but the effect of rosemary oil on this parameter was not significant (P>0.05). Live weight gain and feed intake were not significantly different among the treatment groups (P>0.05). Feed conversion ratio was better in rosemary oil groups than control groups in both environmental conditions (P<0.01). Heat stress deteriorated carcass yield (P<0.01). The highest hot and cold carcass yield (g/100 g of body weight) was observed in 250 ppm rosemary oil added group under the TN condition, but this difference did not significant. Birds kept in HS conditions had greater glucose level than hens kept in TN conditions (P<0.01). Rosemary oil decreased blood glucose level, especially in 250 ppm group of HS (P<0.05). Total, HDL, LDL cholesterol and triglyceride levels were not significantly different among the treatment groups (P>0.05). In conclusion, rosemary oil supplementation reduced the negative effects of heat stress. Rosemary oil could be considered as a potential natural feed additive, following further studies.

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