Nutritive value of dietary fungi treated Jatropha curcas kernel cake: Voluntary intake, growth and digestibility coefficient of goat
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Date
2010
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AGRICULTURE AND BIOLOGY JOURNAL OF NORTH AMERICA
Abstract
This study evaluates the performance characteristics of West African dwarf goats (n = 15) fed
fungi (Aspergillus niger, and Trichoderma longibrachiatum) treated and untreated Jatropha curcas
kernel cake for a 70 day period in a completely randomized design model. The diets consist of a
control (diet A, without Jatropha curcas kernel cake), diet B (50% Aspergillus treated Jatropha
curcas kernel cake + 50 % soybean cake), C (100% Aspergillus treated Jatropha curcas kernel
cake), D (50% Trichoderma treated Jatropha curcas kernel cake +50 % Soybean cake), E (100%
Trichoderma treated Jatropha curcas kernel cake).The results revealed significant variations in
the crude protein, crude fibre , ether extract and ash contents. The dry matter intake (g) of goats
on diets A, B, C and D were 654, 533, 460, and 407 respectively. Dry matter intake was
significantly lower (p>0.05) for animal fed diet E .The highest crude protein intake was recorded
for diet A (control) followed closely by diets B, C, D and E in that order. The crude fibre, ether
extracts and ash consumption followed similar trend. The crude protein and crude fibre contents
were adequate for animal of such age. The digestibility of most of the nutrients followed similar
trend as the nutrient intake with the highest digestibility recorded for animals on diet A. The
digestible nutrient intake recorded decline as the inclusion levels of the fungi treated Jatropha
curcas kernel cake increased in the diets. Animals on diets A, B and C gained weight while those
on diets D and E lost weight and eventually died. It could be concluded that treatment of Jatropha
curcas cake with Trichoderma longibrachiatum was not effective in detoxifying Jatropha curcas
kernel cake compared to Aspergillus niger which is promising in detoxifying Jatropha curcas
kernel cake
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