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MANFRED ANKE AN. R. ACAD. NAC. FARM.

TABLE 17. Influence of vanadium-poor nutrition on feed intake, growth,
reproduction performance and mortality of goats

Parameter Control V- p %
goats deficiency
goats

Feed Non pregnant, g/day 685 598 < 0.001 87
consumption Pregnant, g/day
Lactating, g/day 595 666 < 0.001 112

646 518 < 0.001 80

Growth Birth, kg 2.6 2.6 > 0.05 100
91st day of life, kg 17.5 15.2 < 0.05 87

Undepleted, 96 95 > 0.05 99
101st-268th day, g/day
96 80 < 0.001 83
Intrauterine depletion

g/day

Success of first 70 48 < 0.001
mating, %
Reproduction Conception rate, % 86 73 < 0.01
Matings per gravidity
Abortion rate, % 1.5 2.2 < 0.001 –
Ratio & : %, & = 1
1 19 < 0.001

1.60 0.86 < 0.001

Mortality Kids from 7th to
91st day, %
5 24 < 0.001 –

During pregnancy the deficiency animals equalized this deficit (63).
The vanadium deficiency did not influence intrauterine growth,
neither in female nor in male kids (52).

After intrauterine vanadium depletion, the post-natal development
of both sexes was significantly reduced. Kids with normal supply
during intrauterine development grew normally (66).

The vanadium-poor nutrition lowered the success of first mating
and the conception rate of the she-goats significantly. The nanny-
goats with poor vanadium intake needed significantly more matings
for pregnancy, exhibited a higher rate of spontaneous abortion and
an increased ratio of female to male kids born. A quarter of kids
from vanadium-deprived goats died between days 7 and 91 of life
with some of the deaths preceded by convulsions; only 5% of kids
from vanadium-supplemented goats died during the same time.

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