ALINTERI JOURNAL OF AGRICULTURE SCIENCES, cilt.33, ss.1-6, 2018 (ESCI)
In this study, it was aimed that determine the effects of on liver + gut weight, total body weight and feed conversion ratio Taraxacum officinale L. and Hypericum scabrum L. extract add ratio broiler rations under normal conditions and heat stress. Taraxacum officinale L. and Hypericum scabrum L. plants used in the research were collected from Erzurum province that added to feed by being extract under suitable conditions. As animal material were used 96 pieces of Ross 308 male broiler chicks. Broiler chicks were randomly selected and divided into 6 groups of 4 repetitions, with 16 chicks in each group. While 3 groups were examined under normal conditions, 3 groups were subjected to temperature stress (S) at 38-390c between only 15-30 days of the test period. The animals in the first trial group was formed Control group (Group K) by feeding with no added (Basal) feed. The animals in the second experimental group was fed 0.1% T. officinale L. extract (Group T). The animals in the third experimental group was added to 0.1% of H. scrabum L. extract (Group H). The animals in the fourth experimental group was given unadulterated feed by applying heat stress (Group K + S). The animals in the fifth experiment group was applied temperature stress to and T. officinale L. extract feed added (Group T + S). The animals in the sixth experiment group was applied temperature stress to and 0.1% H. scabrum L. extract feed added (Group H + S). Work lasted 45 days. While total body weight similar values of Group K, Group T and Group H, group K was significant difference between all groups to which the heat stress was applied (p< .05). Liver and intestinal weights were significantly different between Group K and Group T and all groups to which heat stress was applied (p< 0.05). As a result, H. scrabum L. and T. officinale L. extract, which were added to the broiler diet, had no positive effect on the negative effects of heat stress.