This study investigated the impact of an essential oil (EO) mixture (Biomin) on growth performance, carcass yield, visceral organ weights, and duodenal crypt depth in native Turkish geese (Anser anser). Sixty 1-day-old goslings constituted the animal material of the trial. Goslings were divided into three treatment groups, each consisting of four subgroups having five animals each. Animals were homogenously distributed among the groups after being weighed and identified. The three treatment groups received the essential oil mixture at rates of 0.0% (without EO), 0.1% and 0.2%, respectively. The animals were given concentrate feed (21.93% CP and 3010 kcal/kg ME) for the first 2 weeks, and were both grazed and provided with barley meal for the next 8 weeks. The trial was continued for a period of 10 weeks. Results showed that the essential oil mixture had no significant effect on live weight gain, feed intake, feed conversion rate, carcass yield, and heart-liver-gizzard weights (P>0.05). On the other hand, the crypt depths of the EO 0.1% and EO 0.2% groups were greater than that of the EO 0.0% group (P
Bu çalışmada esansiyel yağ (EY) karışımının (Biomin) yerli Türk kazlarında besi performansı, karkas randımanı, bazı organ ağırlıkları ve duodenum kript derinliği üzerine etkisi incelenmiştir. Hayvan materyali olarak 60 adet 1 günlük Yerli Türk kazı (Anser anser) kullanılmıştır. Kazlar üç deneme grubuna ve her birinde beş hayvan bulunan dört alt gruba ayrılmıştır. Hayvanlar tartılarak ve ayaklarından numaralandırılarak homojen dağıtılmıştır. Esansiyel yağ, gruplara sırasıyla; %0.0 (EY’siz), %0.1 ve %0.2 düzeylerinde verilmiştir. Hayvanlar iki hafta konsantre yemle (%21.93 HP ve 3010 kcal/kg ME) sekiz hafta mera+arpa kırmasıyla beslenmiştir. Deneme 10 hafta sürmüştür. Araştırmada esansiyel yağ karışımının canlı ağırlık artışı, yem tüketimi, yem dönüşüm oranı, karkas randımanı, kalp, karaciğer, taşlık ağırlıkları üzerine anlamlı bir etkisi olmamıştır (P>0.05). Diğer yandan EY %0.1 ve %0.2 gruplarındaki hayvanlara ait kript derinlikleri, EY %0.0 grubuna göre daha yüksek çıkmıştır (P
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