EFFECTS OF PARTIALLY REPLACING OF YELLOW CORN WITH DILL OR PARSLEY BY-PRODUCTS IN BROILER DIETS ON SOME PRODUCTIVE AND PHYSIOLOGICAL PARAMETERS

This study was carried out at the Poultry Research Station, El-Azab, Fayoum, Egypt during the period from June to August 2011. Chickens was initially fed a control diet for four days. The total number of the experimental birds (120 at five days of age) was divided into five treatments (24 birds each), each treatment contained three replicates of eight birds each. The experimental treatments were as follows:- 1- Chicks fed the control diet (T1). 2- 10% YC in T1 was replaced by dill by product. 3- 20% YC in T1 was replaced by dill by product. 4- 10% YC in T1 was replaced by parsley by product. 5- 20% YC in T1 was replaced by parsley by product. Results obtained could be summarized in the following: Chicks fed control diet had significantly higher LBW at 42 days, LBWG and GR during the period from 5 to 42 days of age (differences between chicks fed control diet and chicks fed partial replacing of YC by 10 or 20% dill by-product were not significant). Chicks fed partial replacing of YC by 10% parsley by-product had higher FI during the period from 5 to 42 days of age. No significant differences in FC, body temperature, respiratory rate, intestinal pH, total microflora count, blood parameters and chemical composition of broiler meat of broiler chicks fed partial replacing of YC by dill or parsley by-product. Chicks fed partial replacing of YC by 10% dill by-product had significantly better CPC, CCR and higher PI during the period from 5 to 42 days. Chicks fed partial replacing of YC by 10% parsley by-product had significantly higher total giblets% than the other treatments and control group. Chicks fed control diet had the higher MR value as compared with those fed other treatments. While, chicks fed partial replacing of YC by 10% dill by-product had the lower MR value being zero%. Economical efficiency (EEf) values was improved in chicks fed partial replacing of YC by 10% dill by-product as compared with those fed the control diet and other treatments. It could be concluded, that the dill by-product can be substituted up to 10% YC in Ross broiler diets reared in open houses under summer conditions of Egypt which had the best EEf values and can improve the productive performance of broiler chicks, moreover, reduce the harmful effects of the high temperature or any stressful conditions.