Effect of feeding rations supplemented with hydroponic maize fodder on nutrient utilization and milk production in lactating Graded Murrah Buffaloes
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Date
2015-11
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SRI VENKATESWARA VETERINARY UNIVERSITY TIRUPATI - 517 502. (A.P) INDIA
Abstract
ABSTRACT:
A 120 day lactation trial was conducted using 12 lactating graded Murrah
buffaloes (avg. b. wt. 602.53 ± 13.4 kg) by randomly allotting them into two
groups of 6 animals each (control and treatment) to study the effect of replacing
farm made concentrate mixture with hydroponic maize fodder at 25 % level on
milk yield and composition and on nutrient digestibility. Further, in vitro and in
sacco studies were conducted to evaluate the digestibility of hydroponic maize
fodder. Chemical composition (% DMB) indicated CP and EE contents were higher
in hydroponic maize fodder as compared to either conventional maize fodder or
maize grain while the NFE content was higher compared to conventional maize
fodder but lower when compared to the maize grain. Further, production of
hydroponic maize fodder (on 7th day) from maize grain resulted in DM loss of 3.58
per cent. The in vitro DM (P>0.05), CP (P>0.05), NDF (P<0.05) and ADF (P<0.05)
digestibilities (%) evaluated using strained rumen liquor of buffalo bulls were
higher for hydroponic maize fodder as compared to the maize grain. The effective
degradability (% ED) of DM, CP, NDF and ADF at a rumen outflow rate of 0.05/h
were 57.30 and 61.63; 57.47 and 63.20; 42.67 and 34.90; 40.30 and 31.60 per cent
for maize grain and hydroponic maize fodder, respectively.
The daily average milk yield, butter fat yield, 6 % FCM, protein and casein
increased (P>0.05) while butter fat, SNF, lactose and total solids per cent
decreased (P>0.05) marginally in treatment group as compared to the control. The
feed efficiency (DMI/kg 6% FCM yield) and cost of feed per kg 6% FCM yield of
lactating buffaloes were 1.36 and 1.34 and 15.28 and 15.15 in control and
treatment groups, respectively.The digestibility of DM, OM (P>0.05), CP, EE, CF, NFE, NDF, ADF,
hemi-cellulose and cellulose (P<0.05) increased in buffaloes in the treatment group
as compared to the control. The DM intakes (kg/day) were 19.37 and 19.42 for
control and treatment groups, respectively. The DCP and TDN intakes expressed
as % in the diet consumed or as Kg/d increased (P>0.05) in the treatment group of
buffaloes as compared to the control. Further, the DM, DCP and ME intakes per
kg W0.75 were similar among both the groups and were higher than the values
recommended by ICAR (1998). Similarly, the DCP:ME ratio was comparable
among the groups.Based on the present study, it is concluded that replacement of farm made
concentrate mixture with hydroponic maize fodder at 25% level resulted in
improved digestibility of gross nutrients (except DM and OM) and fibre fractions
but had no effect (P>0.05) on milk yield and composition of lactating graded
Murrah buffaloes.
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