الفهرس 
Material and methodsOnly 14 pages are availabe for public view
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Abstract
6- SUMMRY
The following lines sUlllllerize the vl:1rious topics which
we re han die din the pre sen tin v es ti gtit ion in vol ve d stu dyin g
the effect of different supplementtiry dietary fats on fats
aud fat soluble vitl:1mins of Hubbl:1rd und Arbo Acer broilers.
Skin u nd ab dornina I I a t In two different broiler
strains Le. Hubb a rd and Arbor Acer were extracted u s i ng
chloroform-methanol (2: 1) at 5 au d 7 weeks age.
The obtained datu showed thut Doth body weight ,
percentage of skin and abdominttl fats were affected by
the t Y pea ndIe vel 0 f die tar y flit sup i? I ernen t sin ea c h me a I
and female of Hubbard chicken at 5 and 7 weeks age. It
was noticed that the s upp lernen t a I diet with (9 % ACS)
decreased body weight in male and fenmle but the pere
en tag e of skin and abdominal fat showed a slight increase
comparing wi th the control diet. On the other
hl:ind, body weight, the percentl:ige of skin and tlbdominal
fat of broilers fed (!:l % HVO) were inereased than the
b r0 iIe r fed wit h can t rold ie tor fed die t sup P 1ernen ted wit h
(9 % ACS).
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Addi tion of (6 % ACS +~~bHVO) showed a decre~
se in both body weight ~nd carcass weight, while the
percentage of skin and abdominal fl:1tsincreased than the
control diet. On the other hand, when the percentage of
ACS decreased and the percentage of HV0 increased in supp
Iernentar y die tar y fat i .e .( 3 % ACS + 6 96 HVO )
body weight and carcass weight decreased while
the percentage of skin and abdominal fats were increased
than the control diet.
It was no ticed tha t add it ion of ( 9 % RVO ) to
the diet had better effect on broilers which increased
both body wiehgt and carcass weight at 7 weeks age
Also, the percentage of skin fl:1tfound to increase from
1.14 and 1.83 % to 2.79 and 3.15 %, and the abdominu
l flit increased from 1.52 and 1.~6 % to 2.57 and 2.73%
iTlboth mule and female respectively.
The addition of (9 % ACS) to the diet of both male
and female of the Arbor Acer broiler chickens at 5 and 7
weeks age resulted a decrease in body weight but it
caused a slight increase in the percentage of skin and
abdominal fat. On the other ha nd , add i tion of (9 % HVO)
found to increase body weight, carcass weight and percentag
e 0 f ski nun dab dam inH I fat s than ;J r0 i1e r fed the con -
trol diet or diet supplemented with (ACS). Diet containing
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(9 % ACS) affected growth rate rruchrmre than the con tr0 I die t
due to the presence of the toxic level of gossypol in
the die t . A lso , h igh tie vel 0 f ACS inth e die t (9 %
ACS) or (6 % ACS + 3 % RYO) depressed fed con sum.pt ion
and growth rate.
The obtained data showed that. breed, sex, age
and dietary fat have been found to lIlfluence body
weight, carcass weight and the percentage of skin and abdaninal
fat. Hubbard broiler chickens was higher body
weight, carcass weight, percentage of skin and abdominal
fat than Arbor Acer broiler in the two ages in each males
and f ernales , Males are higher in body weight, carcass weight
than females, but lower in skin and abdornina I fat.
The physical properties of chicken fat which included
the specific gravity, refractive index and melting
point were studied.
The specific gravity and refractive index of chicken
fat showed that breed, sex and age did not showed a ~1p.Rr
differences while, dietary fat caused differences in the
specific gravity and the refractive index of the two different
broiler strains under investigation. Both values
were higher when ( 9 % ACS ) were fed than those values
in broilers fed the control diet or 9 % HYO. On the other
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hand, addition of (9 % ACS) to the diet caused a decrease
in chicken fat melting point~
The chernica I pro per ties 0 f ski nan dab dom init I fat
from the two different strains under in ve st ig at i on were
studied.
The acid value of chicken fat fed diet with ACS
was nearly as that of the values in broilers fed the
control diet. Addition of HVO to the diet caused a decrease
in the acid value of both skin and abdominal fat.
Addition of (9 % ACS) to the diet reflected an increase
in the iodine value of skin and abdominal fat in each
male and female broilers.
The adifferent dietary fat supplements caused
widely differences in the saponification value of chicken
fat under investigation.
The addition of (9 % HVO) to the diet lead to decrease
the unsaponifiable matter from 0.88 and 1.89 %) in
skin and abdominal fat of the control to(0.82 and 0.70 %)
of the male Hubbard broilers at 7 weeks age, respectively.
As well as, Arbor Acer strain showed the same trend
of the unsaponifiable matter.
The per 0 x ide val ue f0 Und to in crea se from (2. 6 and
2.6) to (5.3 and 5.7) in skin and abdominal fat respectively
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from male HUbbard broilers at 7 weeks age when fed diet
with (9 % ACS). On the other hand, addition of (9 %
HVO) to the diet decreased the peroxide vulue than broilers
fed diet with (ACS).
The fat supplements (basal, ACS and HVO) differ
mainly in the level of saturated and unsaturated fatty
acids. Palmitic acid is higher in ACS and HVO than the
control diet (23.74, 24.27 and 15.03 %, respectively).
Linoleic acid is the main unsaturated fatty acid in control
diet and ACS (41.31 and 47.48%I1:-espectively), while
oleic acid was the main unsaturated fatty acid (47.01 %)
in HVO.
The fatty acids composition of skin and abdominal
fat from male Hubbard broilers tit 7 weeks age were
investigated. Results showed that the fatty acid distribution
in the abdominal adipose tissues was very similar
to that of the skin. Addi tion of (ti 96 ACS) to the diet
showed an increase in total percent of the unsaturated
fatty acids in each skin and abdominal fat than the control,
(from 61.65 to 66.32 % and from 61.57 to 65.16 %,
respectively). On the contrary addition of (9 % HVO) to
the diet decreased total percentage of unsaturated fatty
acids to reach 59.65 and 5t1.14 % in skin and abdominal
fat respectively.
-_ .. __.._-------
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Palmitic and palmitoleic acids decreased by the
addition of ACS and HVO to the diet. Palmitic acid decreased
from 6.44 and 6.85 % in skin and abdominal fat
to reach 4.51 and 4.08 %in broilers fed diet with 9 %
ACS and 5.39 and 5.24 % in broilers fed diet with 9 %
HVO. On the contrary linoJeic acid increased’ by the addition
of 9 % ACS (from 12.95 and 11.65 to 21.45 and 20.03%)
while addition of 9 % HVO to the diet showed a slight increase
in linoleic acid to 14.94 and 14.54 % in skin and
abdominal fat respectively.
4- C-h-i-c-k-e-n---f-a-t--s-o-l-u-b-le---v-i-t-a-m-i-n-s:--
soluble vitamins:
B- carotene content of skin and abdominal fat from
Hubbard broilers at 7 weeks age showed a slight decrease
by the addition of 9 % ACS, but a higher decrease was noticed
by the addition of 9 % HVO.
Vitamins A and E concentration in skin and abdominal
fat were affected by the addition of fat to the diet.
Addition of 9 % ACS to the diet s.howed a slight dec -
rease in the content of vitamins A and E than broiler fed
the control diet. Whereas,addition of HVO found to decrease
vitwmins A and E contents. Also, mixing ACS and HVO showed
a decrease in B-carotene content and vit~mins A &nd E Gf
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both skin and abdominal fat.
The obtained results showed that sex is a limiting
factor for the concentration of vi tamins A and E in Hubbard
broiler strains. Vitamins A and E were found with higher
contents in male skin and abdominal fat than in female.
soluble vitwnins :
B- carotene slightly decreased in skin and abdominal
fats by the addition of (9 % ACS) or the addition diet
wit h mix i ng (6 % ACS + 3 % HVO) tot he die tin rna Ie and
female Arbor Acer broilers at 7 weeks age. Whereas.
addition of (9 % HVO) to the diet showed a decrease
in B-carotene content in males only.
On the other hand, v i t arni ns A and E concentrations
ins kin and abdomi na I fat showed mar e pronounced decrease
with different dietary fat treatments than B-carotene .
Whereas, the effect of addi t ion diet of (6 % ACS + 3 %
HVO) or (3 % ACS + 6 % HVO) on vi t arnins A and E contents
in skin and abdominal fat were nearly similar.
The obtained data showed that fat soluble vitamins
were found in Hubbard broiler strain with a higher
content than Arbor Acer broiler strain. Also, vitamins E
content was observed in skin fat more than abdominal fat
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from males and females of the different broiler strains
under investigation i.e. (60.52 and 58.16 ug/ g) in
males and females skin fat respectively. While the
abdominal fat contained (48.19 and 46.28 ugl g) in
males and females respectively in Hubbard broiler at 7
weeks age fed with the control diet. Moreover, fat
soluble vitamins tended to increase with increasing age.