EFFECT OF MONENSIN SUPPLEMENTATION ON GROWTH AND BIO AVAILABILITY OF MINERALS IN KIDS
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Date
2001-04-11
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COLLEGE OF VETERINARY AND ANIMAL SCIENCES Mannuthy - Thrissur
Abstract
An investigation spread over a period of 13 weeks
was carried out to assess the effect of monensin on growth and
bioavailability of minerals in kids. Eighteen Malabari kids of
three to four months of age divided into three identical groups
formed the experimental subject. The kids in groups I, II and III
were maintained on concentrate mixtures supplemented with 0,
20 and 30 ppm monensin respectively along with jack leaves fed
ad libitum as the sole source of roughage, for a period of 13
weeks. Increase in body weight, feed conversion efficiency, dry
matter intake, digestibility of nutrients, nitrogen balance,
mineral balance and serum mineral concentration of kids were
the criteria employed for evaluation.
The weight gained by the animals during the
experimental period was highest in group III followed by groups
II and I in the descending order, group II and III showing
significantly higher weight gain (P <0.01) than group I. This is
suggestive of the positive influence of monensin on the growth of
kids.
Maximum improvement in feed conversion efficiency
was shown by kids in group III. followed by group 11 and group 1.
Though there was no significant difference (P < 0,05) between
the two monensin supplemented groups (groups 11 and 111), both
bad significant improvement (P 0.01,' over the controis.
The dry matter intake per 100 kg body weight was
significantly lower (P < O.Ol) in groups II and III than group i.
but no significant difference was recorded in average daily dry
matter intake between the three groups.
Regarding the nutrient digestibility an increasing
trend in the digestibility of dry matter, crude protein, crude
fibre, ether extract and nitrogen free extract was noticed
(P > 0.05) in monensin supplemented groups over the
non-supplemented control group.
Nitrogen retention (per cent of intake) was highest
in group 111 and lowest in group I, with significant increase
(P < 0.01) in monensin supplemented groups (groups II and III)
over group I.
Though there was no significant difference (P > 0.05)
in per ceiit retention of calciurii, phosphorus, iron, copper, zinc
and manganese between the monensin supplemented and
norrsiipplemented groups, an increasing trend was observed in
the percentage retention of major as well as trace minerals uii
m 0 n e n 8 i n s u p p 1 e m e n t a t i o n,
The haematological constituents viz., haeriioglobin,
plasma protein, calcium, phosphorus, iron, copper, zinc and
raansanese in kids of various groups were within the normal
range. There was no significant influence (P > 0.05) of monensin
on haematological values-
From an overall evaluation of the results obtained
during the course of the present investigation it can be inferred
that supplementation of monensin at 20 and 30 ppm level
significantly (P < O.Ol) improves the growth rate, feed efficiency
and nitrogen reteutior!, reduces the dry matter consumption and
favours (P > 0,05) nutrient digestibility and utilization of major
as well as trace minerals in kids reared under intensive system
of management.
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