الفهرس 
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Abstract
The present work was carried out to evaluate using sunflower (SFM) and cotton seed (CSM) meals as potential feed ingredients in the grower and finisher diets of broiler chickens and their effects on the growth performance, carcass quality, blood metabolites (serum total lipids, cholesterol and glucose) and immunocompetaqnce. Two hundred and fifty two Hubbard chick of one day old were fed a basal recommended control starter diet containing 23% CP and 3200 Kcal ME / Kg (without inclusion of sunflower meal or cottonseed meal) during the first two weeks of age, then divided into 7 equal groups and fed the grower diets containing 21% CP and 3200 Kcal ME / Kg for two weeks, then finisher diets containing 18% CP and 3200 Kcal ME / Kg till the end of the experiment at six weeks of age. The grower and finisher experimental diets were formulated without (control diets) or with inclusion of SFM, CSM or mixture of SFM and CSM to provide 20 or 30% from the recommended total dietary protein where the control diet did not contain either SFM or CSM. The broiler chicks were distributed at random into 7 litter pens and fed the experimental diets. The experimental arrangement is to study the effects of inclusion of SFM and / or CSM to provide 20 or 30 % of the recommended dietary protein on growth performance, carcass quality, blood metabolites and immunocompetance. of the broiler chickens. The chicks were vaccinated against Newcastle and Gumboro diseases at proper time. Body weight of the chicks and consumed diets were weekly recorded and the feed conversion ratio was calculated. Blood samples were collected from the wing vein of the broilers at 20, 30 and 40 days of age to separate sera for analyzing the total lipid, cholesterol and glucose. At the end of experiment, 5 chicks from each group were collected and slaughtered to evaluate the carcass quality data. The results of the study revealed that body weight and body gain of the broiler chicks fed the diets with SFM, CSM or mixture from them to provide 20 % of the total crude protein of the grower and finisher diets were not significantly differ from that of the broiler chickens fed the control diet. body weight and body gain of the broiler chicks fed the diet with SFM or CSM or mixture from them to provide 30 % of the total crude protein of the grower and finisher diets were significantly decreased compared to that of the broiler chickens fed the control diet or those fed diet contained SFM or CSM or mixture from them to provide 20% of the recommended total crude protein of the grower and finisher diets. Feed consumption of the broiler chicks fed the diet with SFM, CSM or mixture from them to provide 20 or 30 % of the total crude protein of the grower and finisher diets were significantly increased compared to that of the broiler chickens fed the control diet. Increasing the inclusion of SFM, CSM or mixture of them to provide 30 % of the total crude protein of the grower and finisher diets increased the feed consumption compared to that of the control group or the groups fed the diets supplying only 20 % of the total protein from SFM, CSM or mixture of them. Feed conversion ratios of the broiler chicks fed the diets containing SFM, CSM or mixture from them to provide 20 % of the crude protein of the grower and finisher diets were significantly increased compared to that of the broiler chickens fed the control diet and feed conversion ratio was increased with increasing the level of inclusion of SFM and / or CSM in the diets. The abdominal fat in the carcass of the broiler chicks fed the SFM and or CSM-diets were higher than those fed the control diet. Inclusion of SFM and / or CSM in the diets of the broiler chickens at the different levels had no significant effects on carcass quality and giblet weight percentages. Inclusion of SFM and / or CSM in the diets of the broiler chicks at the different levels had no significant effects on immune response. Feeding the diets containing SFM and / or CSM increased the serum total lipids and cholesterol. Generally, it could be concluded that sunflower meal or cottonseed meal could be included in the broiler grower and finisher diets at a level of 11 % to supply about 20 % of the total recommended crude protein without adverse effects on body weight, weight gain, feed conversion, carcass quality or immune response. However, inclusion of SFM and / or CSM at higher levels (17 % of the diet) to provide 30 % of the total recommended protein significantly decreased the body weight, weight gain and increased feed consumption and feed conversion ratio.