Abstract:
The effect of feeding urea treated Addar grass hay (5%)
and untreated Addar hay and sorghum straw (control) in
stage"1", plus supplementation with molasses in stage "2"
was studied in fifteen bull calves (12-18) month of age and
. (112.5kg) average body weight
Animals
were
fed
in
a
changeover
design
in
two
experimental consecutive periods of 8 weeks duration in
each stage and was separated by seven dry adaptation
. periods in each case
The result showed that the highest dry matter intake (DMI)
(112.5kg/head/stage) was recorded with treated Addar
with urea in stage 1 and when , supplementation with
molasses in stage 2. The lowest DMI (87.2kg head/stage)
were obtained on feeding sorghum straw in two stages.
Generally, differences between diets contain of treated
and
untreated Addar in two stages were significant
.((P<0.01
Crud protein intake (CPI) was highest (12.2kg/head/stage)
in treated Addar with urea in stage 1 and stage 2. When
supplementation with mall as and lowest (3.5/head/stage)
on sorghum straw when untreated with urea in stage 1
2
and when supplemented with males in stage 2, there were
.differences (P<0.01) between diets were also significant
The highest body weight (95.5/head/stage) was recorded
when
urea
treated
Addar
stage
(1)
and
when
supplementation with molasses in stage (2) and lowest
(80.4 main group/stages) when offered the untreated
Addar only stage (1) or with molasses in stage (2).
Variation between treatment were significant (P<0.01) in
experiment (2). The dry matter degradability study of the
tested three diets (treated Addar, untreated
Addar and
sorghum straw stage 1 and with molasses in (stage 2) was
carried out using fistulated bull equipped with rumen
cannula. The effective
degradability (%) at (0.05 rumen
out flow rate) of the tested diets of treated Addar,
untreated Addar and sorghum straw were (45.4,52.7,44.6)
respectively) untreated Addar showed high dry matter
degradation. Addition of molasses to Addar resulted in
.increased
dry matter degradability
.
There were significant (P<0.01) differences between the
three diets. In experiment (3) of this study (12) un
castrated Sudanese lambs (Ashgur) were used Lambs
ranged in age between (7-8) months and live body weight
averaged (19kg). The apparent digestibility (%) of DM, OM
and C.P for three diets treated Addar, untreated Addar and
sorghum straw stage (1) were (58.7, 49.2 and 61.96; 50.8,
.(55.4 and 34.5; 56.0, 58.8 and – 34.9 respectively
3
supplemented with decreased the apparent digestibility
sorghum
(%) of DM, OM and C.P for tow diets except
6.85 ,1.75 ;7.61 straw (54.1, 35.8 and 39.1; 44.1, 45.0 and
)50.0<and 49.5 respectively). There were NO significant (P
.differences between treatment and stages
