دراسة عن تأثير الإجهاد الحراري ولمدد مختلفة في الصورة الدمية لفروج اللحم الملقح بلقاحي نيوكاسل وكمبورو

Abstract

This study was conducted to show the effect of the heat stress that will represented by 35 C° and for two periods : 8 hours in group (C) and 16 hours in group (D) with giving both Newcastle and Gumboro vaccines , and in addition to a control group (A) that will be represented by normal fowl breeding temperature according to its life stages without giving any vaccines and group (B) that will be giving all above vaccines breeding in normal temperature with comparing between all these groups with each others in order to know the effect of the heat stress on some hematological parameters in treated broiler chicks ,these parameters have been measured weekly by taking 15 birds from each group randomly to making these tests and depending their resulting in statistical test.