Evaluation of Cumbu Napier Hybrids Co(CN)4 And Co(BN)5 in Crossbred Cattle
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Date
2021-07
Journal Title
Journal ISSN
Volume Title
Publisher
TANUVAS, Chennai
Abstract
Green fodder feeding is most important for milking cows. An experiment was
carried out to compare the growth, performance, proximate composition and nutritive value
of Bajra Napier hybrid Co(BN)5 (improved variety) with the standard variety Co(CN)4.Both
the cultivars were cultivated in irrigated land comprising red sandy loam soil by following
standard agronomical practices and 0.5 acre of land area was utilized for each cultivar.
Fodder was harvested on 75th day after planting and subsequent harvest at every 45 days
in each experimental plot. The growth and yield parameters were measured.The yield was
significantly (p<0.01) higher in Co(BN)5 (360.50t/ha/year)followed by Co(CN)4(290.12t/
ha/year).The biometric observations showed the significant (p<0.05) difference in Co(BN)5
than Co(CN)4. The samples were collected for analyzing chemical composition.The results
indicated that the crude protein, crude fibre, NDF, ADF and cellulose content of Co(BN)5
were significantly (p<0.01) higher than Co(CN)4. The fodder crop cultivars were analysed
for IVDMD.The IVDMD of Co(BN)5 (49.18%) was significantly higher than the Co(CN)4
(43.09%). A Lactation trial was conducted in twelve cross bred cows during mid lactation
period and separated into two groups with six animals in each group. One group was named
as control (C) and fed with Co(CN)4 green fodder and another group named as treatment
(T) and fed with Co(BN)5. The animals were housed in standard condition, dewormed and
fed with clean potable drinking water ad libitum.The experiment was conducted for 90 days.
Except green fodder variation, animals were offered ad libitum paddy straw and concentrate
mixture according to their level of production. The feed and fodder intake, left over and dry
matter intake were recorded every day. The average dry matter intake was recorded and
inferred that it was significantly (P<0.05) different. The average milk yield, milk fat, solid
non-fat and total solids were recorded for both groups. The average milk yield in treatment
group is highly significant (p<0.01) than control group. There was no change observed in the
milk fat and solid non-fat. The feed cost was calculated for every litre of milk production.The
feed cost is significantly (p<0.01) reduced in treatment group due to the less requirement of
Co(BN)5 fodder when compared to Co(CN)4 fodder. It is concluded that Cultivar Co(BN)5
is superior than Co(CN)4 in terms of crop growth and biomass yield. Hence, cultivation of
Bajra Napier Cultivar Co(BN)5 and feeding the same to improve the milk yield in cattle is the
outcome of this study.
Description
TNV_IJVASR_50(4)_July-Aug.2021_16-22
Keywords
Veterinary Science, Animal Nutrition