الفهرس 
Material and methodsOnly 14 pages are availabe for public view
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Abstract
10797886
», SUMi>4,ARY AND CONClUSIONS
STUD:I;ES OF :N.A.P:tERG~SS H_ASA GREEN
FODDER FOR CALF FATTENING
The study waS carried out to c~mpare fattening
ot calves on Napier (elephsnt) grass as a ~ole green
fodder and Napier gras with moderate allowance of
concentrate mixture with the conventional fattening
ration (Concentrate + rice straw).
Thirtynale calves were assigned at rFindom 8l’ld
grouped three homogenous groupS of teD calves eacho
During the first fattening period (18 weeks), the three
groups of oalves received their experimental retions(A)
Napier graBS alone, (B) Napier grass pl~3 concentrate
mixture, and (C) rice straw plus concentrate mixture.
In the sUbsequent to 10 weeks (the second period),
calves in all groups received a finishing ration consisting
of rice straw and concentrate mixture. Live
body weight changes were recorded biweekly throughout
the 196 daY whole experimental period.Adigeetibility
trial waS conducted to deter~ine the digestibility of
the three ration (A) , (B) and (C) outlined above •
Average live body weights of calves at the beginning
of the experiment were 177.5, 177.4 and 176.9 kg for
the three gro~pa. respectively. At the first exper1~ental
period, average daily Dl oonsumption we.!! 4.97., 4.04 and
5.62 kg for the three experi-nental rstiona, respectively.
Feed conversion val~se experessed RS kilograms SE/kg
wei~ht gain were 5.828, ).582 and 5.508 kg. production
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(78)
efficiency values were 0.172,0.279 and 0.181 kg weight
gain/kg S.E. Average daily weight gains were 0.517,
0.666 and 0.525 kg for calves ted rations A, B and C,
respectively. The differences in daily weight gains
were statistically sighificant (P~O.05).
At the second experimental period (finishing
period) average aaily DM consumption was 8.12, 8.44
and 8.13 kg for rations At Band C,reepectively. Feed
conversion values expressed as kilograms SE/kg weight
gain were 4.919, 5.802, and 4.674 kg. production efficiency
values were 0.203, 0.172 and 0.214 kg weight
gain/kg SE and average daily weight gains were 0.850
0.748 and 0.896 kg tor calves fed ratione: A ,B and C, respectively.
Average daily II4 conswuption tor the tot’ll experimental
period were 6.09, 5.16 and 6.51 kg/ealffor rations
A, B and C,respectively • Feed convereion values expressed
as kilograms SE/kg weight gain were 5.393, 4.435
and 5.102 kg. production efficiency values were 0.185
0.225 and 0.196 kg weight gain/ kg SE, Average daily
weight gains were 0.636, 0.697 and 0.659 kg for calves
fed rations A. B and C, respectively.
~conomica1 efficiency values expre8sed as the
ratio between price ot weight gain and cost of ?eed
c on sumed • The vall.1es were 4.46 , 4.67
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(79)
and 3.86 for calves ted rations A,B and C, respectivel~
Cost of feed consumed to produce one kg weight gain
were 24.64. 2).55 and 28.50 P.T for rations A,B and C,
reepectivelyo
Digestion coefficients ot DK, CP, EE, OF and NFE
for Napier grass ( rstion A) were 71.59. 73.66,15.53,
17.15 and 74.13% respectively. The .corresponding
values for Napier grass plus concentrate mixture
(59=41% on DM basis) were 63.80. 72.73,68.06,62.18 and
71.56%, respectively,and those for concentrate mixture
plus rice straw (59:41% o. DM basis) were 68.63, 75.31
56.74, 59.12 and 72.90%, res,ectively.
The feeding values of the fresh Napier grass
expressed as SE, TDN and DCP were 10.78, 12.44, and
1.69% respectively. When expressed on DM basis, these
values were 60.50% SE, 69.80%, TDN and 9.47% DOP. The
correspo.ding values for Napier grass plus concentrate
mixture ( ration B) on DY basis were 59.l7~ SE, 66.49~
TDN an d 10.76% DOP. The feeding values as a SE, TDN and
DCP for concentrate mixture plus rice straw (ration C)
on llI4 basis were ~1.96,.63-.60&8’. 76%,respecti vely.
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(80)
Conclusions:
Based on the findings of this investigation, it
could be concluded that Napier grass is a palatable
forage. well digested and has high feeding values when
fed to calves either alone or with limited amounts of
concentrate mixture. Addition of a moderate allowance
of concentrate to Napier grass improve the production
efficiency and consequently improve weight gain. Using
Napier grass in eWft-nerfor fattening calves hal!!! impl’-
oved economical efficiency and effectively decreased
the cost of meat production. It could be recommended
that swmmer forage crops be utilized in feeding cattle
in Bgypt to solve the problem of sumner feeds shortage, find
in the meantime to Save considerable amounts of
conoentrates.
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