Influence of processing cassava peels on the hydrogen cyanide concentration, nutritive value and performance of growing rabbits |
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| Authors: | Olurotimi Ayobami Olafadehan Oluwatoyin Osuahre Olafadehan Cletus Otu Obun Aliyu Mohammed Yusuf Michael Kolawole Adewumi Stephen Kayode Omotugba Nyam Emmanuel Daniel |
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| Institution: | (1) Department of Animal Science, University of Abuja, Abuja, Nigeria;(2) Department of Animal Production Technology, Federal College of Wildlife Management, New Bussa, Niger State, Nigeria;(3) Department of Basic Science, Federal College of Wildlife Management, New Bussa, Niger State, Nigeria;(4) Department of Animal Science, University of Ibadan, Ibadan, Nigeria |
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| Abstract: | Forty-eight rabbits used to investigate the response of growing rabbits to diets containing differently processed cassava
peel meals were divided into four groups balanced for sex and weight. These groups were then assigned at random to the experimental
treatments. Four diets were formulated such that the diets contained 200 g/kg of the experimental feedstuffs, sun-dried cassava
peel meal (S), ensiled cassava peel meal (E) and retted cassava peel meal (R), and the control did not contain any cassava
peels. Hydrogen cyanide (HCN) concentration in the processed cassava peel meal was lower relative to the unprocessed meal.
It was, however, lowest in R and highest in E. With the exception of S, fibre fractions were lower in the processed meal compared
to the unprocessed meal. The E depressed (p < 0.05) feed and digestible nutrient intakes, weight gain, nutrient digestibility, digestible protein (DP), digestible energy
(DE) and DP/DE ratio but increased protein intake to gain and feed to gain ratios compared to other diets. Intake of HCN decreased
(p < 0.05) successively in this order: R, S and E. The results indicate that retting and sun-drying are more effective in cassava
peel detoxification than ensiling, and dietary HCN concentration and intake of 56 and 4 mg/kg BW, respectively, were not toxic
under the conditions of the experiment. |
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