UTILIZATION OF FERMENTED MUCUNA PRURIENS LEAF MEAL AS A REPLACEMENT FOR SOYABEAN MEAL IN CLARIAS GARIEPINUS (BURCHELL, 1822) FINGERLINGS DIETS
UTILIZATION OF FERMENTED MUCUNA PRURIENS LEAF MEAL AS A REPLACEMENT FOR SOYABEAN MEAL IN CLARIAS GARIEPINUS (BURCHELL, 1822) FINGERLINGS DIETS
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Date
2017-03
Authors
IBRAHIM, Rasaq
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Abstract
Feeding trial was conducted in 18 plastic tanks (60 × 45× 30 cm) to assess the performance
of Clarias gariepinus fingerlings fed diets containing fermented Mucuna pruriens leaf
meal as an alternative protein source to soya bean meal. Five iso-nitrogenous (crude
protein- 40%) diets were formulated containing Fermented Mucuna pruriens leaf meal at
A(100%F MLM), B(75% FMLM), C(50% FMLM), D(25% FMLM) and E(0% FMLM) (control) were fed at 5%
to triplicate groups of 10 fingerlings (mean weight ranged from 6.20±1.96g – 6.80±1.97g)
of C. gariepinus for a period of twelve (12) weeks. The Mucuna pruriens leaves were
collected and processed by Air-dried Mucuna Leaf Meal (ADMLM), Soaked Mucuna Leaf
Meal in cold water (SCMLM), Soaked Mucuna Leaf Meal in hot water (SHMLM) and
Fermented Mucuna Leaf Meal (FMLM). Proximate analysis showed that FMLM had
highest value (25.94±0.94%) of crude protein. Analysis of anti-nutritional factors showed
that hydrocyanic acid, oxalate, phytate, saponin, and tannin were reduced significantly
(P<0.05) after processing the Mucuna leaf meal. The raw and fermented Mucuna pruriens
leaf meal recorded revealed there was no significant difference (P>0.05) in values of
mineral composition (calcium, magnesium, phosphorus, sodium, potassium, manganese,
copper, zinc and iron). Growth performance and nutrient utilization parameters indicate
that E(0% MLM) gave the highest weight gain (168.87±3.97g) but did not significantly
(P>0.05) differ from E(25% MLM), (161.30±6.12g) and the lowest weight gain (89.70±1.96g)
was recorded in B(100% MLM). Similarly, the highest specific growth rate (3.79g) was
recorded in F(0% MLM) (control) followed by E(25% MLM) which had (3.79±0.03g) and the least
value (3.10±0.02g) was obtained in B(100% MLM). However, feed conversion ratio (FCR),
protein efficiency ratio (PER), and gross feed conversion efficiency (GFCE) were not
significantly different (P>0.05) among the dietary treatments. The highest FCR (1.72±0.12)
and least (1.50±0.02) were obtained in A(100% MLM) and E(0%FMLM) respectively. The highest (66.54±0.98) and least (58.67±4.47) were recorded in E(0% FMLM) and A(100% MLM), for GFCE
respectively. The highest PER (1.64±0.03) and least (1.47±0.11) were obtained in
E(0%FMLM) and A(100% FMLM), respectively. Apparent protein digestibility recorded highest
value (61.40±0.60) in diet E(0% FMLM) and least was recorded in diet A(100% MLM)
(55.87±±0.90).Cost benefit analysis showed that D(25%FMLM) had cost per kilogram of diet
(₦350±17.32) and profit index (2.60±0.11) while A(100% MLM) recorded least cost per ilogram of feed (₦230±5.77) with correspondingly lowest profit index (1.69±0.06). The
result from this study indicated that Fermented Mucuna pruriens leaf meal diet can replace
soya bean meal up to 25% in the diets for C. gariepinus without compromising growth
performance, nutrient utilization apparent digestibility coefficient and cost of production.
Description
A DISSERTATION SUBMITTED TO THE SCHOOL OF POSTGRADUATE STUDIES,
AHMADU BELLO UNIVERSITY, ZARIA
IN PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE AWARD
OF A MASTER DEGREE IN FISHERIES
DEPARTMENT OF BIOLOGY,
FACULTY OF LIFE SCIENCES
AHMADU BELLO UNIVERTY,
ZARIA, NIGERIA
Keywords
UTILIZATION,, FERMENTED MUCUNA PRURIENS LEAF MEAL,, REPLACEMENT,, SOYABEAN MEAL,, CLARIAS GARIEPINUS,, FINGERLINGS DIETS