الفهرس | Only 14 pages are availabe for public view |
Abstract The present study was conducted in a private farm in Gharbia Governorate, Egypt, during period from December 2017 to February 2018. This study the effects of adding a probiotic (dry yeast or Aspergillus awamori) as antioxidant agents to diets containing oxidized palm oil on the productive performance of egg quality traits, some blood components, economic efficiency and relative economic efficiency of Gimmizah laying hens. In this study, one hundred and eighty (180), 28 weeks old Gimmizah laying hens were used in the experiment. Hens were distributed at random into 6 similar treatment groups. Each treatment group was divided into 3 replicates of 10 layers each in a completely randomized design. Layers were housed in individual cages. The first group was fed a basal diet contains 16.41% crude protein, 2748 ME kcal/ kg diet (positive control, T1). The second group was fed basal diet added with 2% oxidized dietary palm oil supplementation (negative control T2). Other groups three and four were fed negative control with 0.5% and 1% dry yeast (Saccharomyces cervices T3 and T4), respectively. While, five and six group were fed the negative control with 0.5% and 1% Aspergillus awamori T5 and T6, respectively. |