الفهرس 
Using of traditional oil/fat asa energy source in broiler dietsOnly 14 pages are availabe for public view
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
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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 replacement increasing.
2- Carcass (%) significantly decreased with high GM increasing in a linear form.
Liver percentage was higher with 100% replacement level. There is a gradual
increasing in % gizzard with the GM increase in experimental diet. The 50,
100% SBM replacement groups exhibited a significant higher giblet (%)
compared with other experimental groups. Abdominal fat was linearly
decreased with dietary GM supplementation.
3- Tibia traits did not show any significant differences between treatments.
4- Experimental treatments didn’t significantly differ in the percentages of CP
and EE of breast tissue. The same result is appeared for tibia or drumstick
meat.
5- Blood traits didn’t significantly differ between treatments in AST and
albumen.
6- The input – output analysis of economic efficiency indicated that there is a
linear decreasing in REE with GM increasing. Regardless the statistical
analysis of this simple study, it showed that both 50% and 100% SBM
replacement groups showed the worst economic diets, especially 100% SBM
replacement exhibited the most economic depression (negative value) among
groups.
The study has shown that each replacement ratios reduced the
productive performance metrics therefore advised to do more research in this
area to improve the utilization of earning the neighborhood.