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consideration of length of stolon and yield of were decreased with advancement of age and this
stolon per plant might be effective in further
selection for the improvement of morphological
forms.
382 SULTANA, M.N.; UDDIN, M.M.
(Faculty of Bioscience Engineering, Ghent
University, Belgium); KHAN, M.J.;
KHANDAKER, Z.H. & SHAHJALAL, M.
(Dept. of Animal Nutrition, Bangladesh
Agricultural University, Mymensingh). Effect of
Rhizobium Inoculum and N-Fertilizer on
Nutrient Contents of Cowpea (Vigna
Unguiculata) Forage at Various Stages of
Maturity. Bang. J. Anim. Sci., 2005, 34 (1 & 2),
93-102.
The experiment was conducted to study the effect
of Rhizobium inoculum, Rhizobium with N-
fertilizer and different doses of N-fertilizer (urea)
on nutrient contents at 3 (three) stages (40d, 50d
and 60d) of maturity of cowpea forage. Among
proximate components, crude protein (CP) and
other extract (FE) contents increased but crude
fiber (CF) value decreased non- significantly
(P>0.05 over the control at all stages of maturity.
Although CP content of the cowpea forage
harvested on day 40 was non-significantly (P>0.5)
higher than that of the day 60 but dry matter (DM),
organic matter (OM), CF and Ash contents of the
forage harvested on day 50 showed numerically
(P>0.05) higher values than those harvested on day
40 Neutral detergent fiber (NDF) and acid
detergent fiber (ADF) content of cowpea forage
significantly (P<0.01) decreased with the
application of Rhizobium inoculum + 25 kg N/ha
and the values were lower than that of the control
at all stages of maturity. The highest dO
concentration of ME and NEI were obtained by the
treatment consisting of Rhizobium inoculum along
with 25kg N/ha compared to control at all stages of
plant ages but values of all the nutrient components
120
was true for all treatments. Considering nutritive
value, it may be suggested to grow cowpea (Vigna
unguiculatu) forage using Rhizobium inoculum
along with 25kg N/ha from urea fertilizer and
harvested at the age of 40 days.
383 UDDIN, M.M.; SULTANA, M.N. (Faculty
of Bioscience Engineering, Ghent University,
Belgium) & KHANDAKER, Z.H. (Dept. of
Animal Nutrition, Bangladesh Agricultural
University, Mymensingh). Effect of Levels of
Nitrogen with or Without Phophorus Fertilizer on
Oat (Avena Sativa) Forage Production Harvested at
Various Ages: ii. Nutritive Value and
Macromineral Contents. Bang. J. Anim. Sci., 2005,
34(1 & 2), 73-81.
The experiment was undertaken to find out doses
of N and P fertilizer and cutting age on nutritive
value in terms of in vitro organic matter
digestibility IVOMD), metabolizabale energy
(ME) and macro mineral contents of oat forage.
The experiment was designed by using three levels
of N fertilizer (0, 55 and 110 kg urea N/ha), two
levels of P fertilizer (0 and 10 kg P/ha) and three
stages of maturity (60, 70 and 80 days after
sowing). The IVOMD (%) and ME (MJ/kg DM)
contents of oat forage decreased (P<0.01) with the
increased age of plants from 60 to 80 days.
However, the yield of digestible organic matter and
ME per hactre increased progressively and
significantly (P<0.01) as the stages of maturity
increased. The stage of maturity had a negative
effect (P<0.01) on Ca, P and K contents, but, no
effect was found on Na and S contents of oat
forage. As the levels of N and P fertilizers
increased (from 0 to 110kg urea N/ha and 0 to
10kg P/ha) the IVOMD and ME contents of oat
forage also increased (P<0.01). However, no
significant (P>0.05) effect of macro mineral
concentrations of oat forage was observed due to