QUALITY ASSESSMENT OF DUSA-RICE BRAN MULTI-NUTRIENT BLOCK (DRMB) IN A SEMI-ARID ENVIRONMENT OF NORTH EAST NIGERIA

Authors

  • Gadzama, I. U. National Animal Production Research Institute, Ahmadu Bello University, Shika, Zaria, Nigeria
  • Mohammed, I. D. Department of Animal Science, University of Maiduguri, Borno State, Nigeria
  • Barje P. P. National Animal Production Research Institute, Ahmadu Bello University, Shika-Zaria,
  • Yashim, S. M. Department of Animal Science, Ahmadu Bello University, Samaru, Zaria, Nigeria
  • Abdu, S. B. Department of Animal Science, Ahmadu Bello University, Samaru, Zaria, Nigeria
  • Ereke, S. O. National Animal Production Research Institute, Ahmadu Bello University, Shika-Zaria,

Abstract

The study was carried out to establish optimum protocols and conditions for making dusa-rice
bran multi-nutrient blocks (DRMB) considered suitable for on-farm adoption by ruminant
farmers in the semi-arid environment of North East Nigeria in terms of hardness, compactness
and cost, while aiming at achieving nutritional supplement to the different locally sourced feed
ingredients. Five different multi-nutrient blocks (F1, F2, F3, F4 and F5) were formulated and
developed, each containing equal proportion of Molasses, Urea, Salt and Cement. Dusa (which
contain 75% maize bran), Poultry litter, Cotton seed cake and Rice bran were used in varying
proportions. Cold process was used, where the feed ingredients were thoroughly mixed before
the pastes were cast into a wooden mould of size 15cm x 15cm x 10cm. The blocks were sun-
dried for 30 days at air temperature of about 36oC and 50% relative humidity. Four of the
developed blocks (F1, F3, F4 and F5) had comparable hardness (+++) and compactness (+++) up
till the 14th day of drying with F4 blocks having the highest hardness and compactness
throughout the drying period. Chemical composition analysis of the different blocks revealed
highest dry matter content in F1 (96.50%) and lowest in F5 (95.70%). F3 recorded highest crude
protein content (13.70%) while F4 (8.20%) recorded the least. Crude fibre content was high in F5
(38.00%) and low in F4 (23.00%). Ash content was highest in F1 (16.00%) and lowest in F4
(7.50%). The cost of producing 2kg block was highest in F5 (N58.43) and lowest in F1 (N44.65).
F1 and F3 blocks appeared to be the best in terms of cost and crude protein content respectively
which could be highly affordable by small-holder farmers. Therefore, the potentials and
prospects of the formulated dusa-rice bran multi-nutrient blocks as dry season feed supplements
in ruminant nutrition appear quite promising, with possibilities of on-farm adoption due to the
simplicity in its production technology.

Published

2016-12-30