Retraction Note: Effects of replacing groundnut cake with rumen content supplemented with or without enzyme in the diet of weaner rabbits

Résumé

Rabbits are also herbivores which efficiently convert fodder
to food. They are prolific and converter of plant proteins
of little or no use to people as food into high-value animal
protein. Rabbit meat is high in protein, low in calories and
low in fat and cholesterol contents, being considered as a
delicacy and a healthy food product. Feeding rabbits with
concentrates is expensive and therefore in order to reduce
cost of production, hence the use of rumen content in this
study as alternative feedstuff without competition. A total of thirty six (36) weaner rabbits (oryctalagus cuniculus) of
different body weight and age where use in this experiment
to determine the effects of replacing rumen content with or
without enzyme supplementation for groundnut cake. This
feeding trial which lasted for 8 weeks was carried out in
order to determine the replacement value of groundnut cake
with rumen content with or without enzyme in the diet of
weaner rabbit. A 3x2 factorial experiment was adopted such
that there where three (3) replacement level of rumen
content (0, 25 and 50 %) for groundnut cake by two
supplemental level (no enzyme and enzyme supplement). The results showed that increased inclusion level of rumen
content has significant effects (p < 0.05) on daily feed intake, rate
of weight gain, feed to gain ratio, nitrogen retention,
faecal nitrogen, total nitrogen output and nitrogen
digestibility. The weight gained by rabbits fed on 0, 25 and
50 % were all comparable (p > 0.05) with weight gained value of
7.62,7.44 and 7.36 g respectively. Similarly there was a
significant (p < 0.05)
effect of supplement added on the body weight gain of the
experimental animals. There was significant effect
(p < 0.05) of
the diet on the obtained feed to gain ratio. However, there
was no significant effect (p > 0.05) of the treatment on urinary
nitrogen. Significant (p < 0.05) effects of supplementation was
observed on the feed intake, weight gain, feed to gain
ratio, faecal nitrogen, nitrogen retention and nitrogen
digestibility but there was no significant effects
(p > 0.05) of
the supplementation on the nitrogen intake. The interaction
between the varying levels of rumen content supplementation
had significant effects (p < 0.05) on the feacal nitrogen,
feed intake and feed to gain ratio but no significant
(p < 0.05)
effects on interaction of nitrogen intake. In conclusion, since the results from this study showed no
negative effects on the performance of the experimental
animals, the test ingredient can be used as alternative
feedstuff at a lower inclusion level so as to reduce
production cost and expand rabbit production.

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