ABSTRACT

The study was carried out to evaluate the effect of replacement of maize with graded dry cassava

sieviettete waste in broiler ration. A total of 150 day old Anak broilers were used for the

experiment. The birds were randomly assigned to five (5) treatment diets in a Completely

Randomized Design (CRD). The birds were fed diets containing varying levels of dry cassava

sieviette to replace maize at 0%, 5%, 10%, 15% and 20%. Data were collected for growth

parameters, carcass cut parts and internal organ proportions of broiler chickens. The result

obtained showed that there were significant differences (P<0.05) for all the parameters

considered under growth parameters except for the initial weight and feed conversion ratio

(FCR). The final weight showed that birds fed diet 2 (1546.67g) and 4 (1450.00g) had higher

(p<0. 05) weight than other treatment diets. The average daily weight gain recorded showed that

birds fed diet 2 (28.98g) and diet 4 (26.94g) were significantly (p<O.OS) higher than birds fed

diets 1, 3 and 5. For feed intake and average daily feed intake birds fed diet 1 and 2 were

significantly (p<zO.05) higher than other treatment diets. The least FCR value obtained by birds

fed diet 2 (2.98) and diet 4 (3.03) showed that the diet was better utilized by the birds for weight

gain than birds fed diet 1. There were significance differences (p<O.05) in all the parameters

observed for cut parts except for dressing percentage, drumstick, thigh, wings and back cut.

Birds fed diet 4 had a higher significant (p<O.05) value for live weight (1450.00g) and dressed

weight (1011 6.67g) than the control diet (1300g and 900.00g). The result of the internal organs

expressed as percentage of live weight showed that there were significant differences (P<0. 05)

observed in kidney, gizzard, heart, and liver except for intestine, proventiculus, spleen, and

lungs. Birds fed diet 1 had a higher significant (p<O.05) value for heart (0.62%) and liver

'2.01%) than others diets; diet 2 (0.54%; 1.95%), diet 3 (0.66%; 1.97%), diet 4 (0.44%; 1.78%)

and diet 5 (0.45%; 2.12%). The study revealed that dry cassava sieviette is a good source of

energy (2260.00kcal/kg) for broiler chickens. The higher weight gain recorded by birds fed 2 and

4 which were comparable to birds fed diets 3 and 5 but higher than birds fed control diet showed

that cassava sieviette can successfully replace maize up to 20% in the diet of broiler chickens and

can be accepted by the birds for better performance, resulting to a higher weight gain obtained by

the birds. The result also showed that the treatment diets compared favourably with the control

diets in the relative carcass cut parts and organ weights indicating that dry cassava sieviette can

replace maize in the diets of broilers up to 20% without any deleterious effect on the relative

organ weights and carcass cut parts of the birds.