NUTRITIONAL EVALUATION OF SOME UNTRADITIONALFEEDSTUFFS IN GROWING CHICK DIETS

Abstract

Hundred and twenty five unsexed day-old of ROSS broiler chicks were used to study the effect of using fatty acids and distilled fatty acids as energy sources in broiler diets on performance, carcass characteristics, some bone traits, chemical analysis of some tissues, some blood components and economic efficiency of broiler chicks at different periods and overall period. This experiment contained 5 treatments and 25 chicks for each treatment. The experiment lasted from 7 to 35 day-old and contained 5 treatments diets (starter, grower and finisher) contained 2%, 3% and 4% of different traditional and untraditional oil/ fat sources through the 3 different stages, respectively. The sources are; soybean oil (SBO) and palm oil (PO) as traditional dietary oil sources, full fat soy (FFS), Dry fat (DF) and fatty acids mix (FAM) as untraditional oil/fat sources. The experimental period divided into 3 different stages; starter period, starting from 7 to 21 day-old, grower from 22-28 day-old and 29-35day-old, beside to overall period from 7 to 35day-old.All experimental traits and measurements were taken each period. Results of this experiment showed that: 1- Chick performance including LBW, BWG, FI and FCR didn’t significantly differ between treatments at different periods and overall period. 2- Carcass traits were not significantly affected transactions have shown the same results observes with bone traits. 3- Chicks received diet contained FFS treatment had a significant higher CP in thigh meat compared with the other experimental groups including SBO, PO and FAM. Also chicks received diet contained FAM treatment had a significant higher CP in drumstick meat compared SBO. The breast meat containingof %CP were not affected significantly. 4- Both PO and DF treatments recorded significant higher values of EE containingfor EE of breast meat among oil/fat groups. Also chicks received diet contained FFS and FAM treatments had a significant lowest EE in drumstick meat compared with the other experimental groups including SBO, PO, and DF. The thigh meat didn't have any significant differences between treatments in %EE. 5- There is a significant difference between experimental treatments in all plasma components of chicks. 6- Considering SBO diet as the control diet (100% REE); the simple economic study indicated that PO treatment is the most profitable diet among experimental diets. The secondexperiment The experiment contained basal starter, grower and finisher diets divided into control diet(100% SBM as a basal protein source), beside 4 diets formulated by gradual replacement of dietary SBM of control diet with 12.5% GM, 25% GM, 50%GM and 100% GM. The experiment lasted from 7 to 35 day-old. The experimental period divided into 3 different stages; starter period, starting from 7 to 21 day-old, grower from 22-28 day-old and 29-35day-old, beside to overall period from 7 to 35day-old. Results showed that: 1- Performance traits including LBW at 35 day-old, BWG, feed intake, FCR, ECPU and EMEU showed poorly values with