Yüksek Enerjili Yemlere Biberiye Yaprağı (Rosmarinus officinalis) İlavesinin, Yumurtacı Tavuklarda Performans, Yumurta Kalite Kriterleri, Serum Lipit Profili ve Karaciğer Yağ Oranı Üzerine Etkisi.

In this study, it was aimed to determine the effects of rosemary leaves (Rosmarinus officinalis) added to laying hen diets on performance, egg quality, serum lipid profile, some antioxidant enzymes and liver fat ratio. A total of 120 Lohman LSL hybrid laying hens at the age of 70 weeks was used in the study, divided into five groups (n=24) and each group was carried out with six replications. The first group was with basal feed (control), the second group was with high energy (3000 kcal kg-1) feed, and the 3rd, 4th and 5th groups were with feeds that added 5, 10 and 15 g kg-1 rosemary leaves, respectively, to high energy (HE) diet. It was fed for 8 weeks. At the beginning of experiment, there was no statistically significant difference between the groups in initial body weight, feed conversion ratio and egg weight. At all treatment groups final body weight decreased except control group. Feed consumption and egg production decreased in the group that fed with high energy (HE) feed that was not added rosemary. There was no statistically significant difference between the groups in albumen, yolk and shell weight, Haugh units, shape index and shell thickness (P>0.05). Although, the addition of rosemary to laying hen rations significantly increased yolk color and shell breaking strength. Serum GPx value was found to increase significantly with the addition of HE+15 g kg-1 rosemary leaf (P<0.001). It has been determined that the addition of rosemary to the feed decreases the plasma triglyceride and VLDL ratio. Liver weight was found to be high in HE+0 g kg-1 group (P<0.001). The liver fat rate was low in all groups that added rosemary leaves. As a result; it might be said that the addition of rosemary leaves to high energy laying hen diets positively affects shell breaking strength, yolk color, serum triglyceride value, VLDL ratio, liver weight, liver fat ratio and GPx enzyme activity. [ABSTRACT FROM AUTHOR]