This study was conducted to investigate the performance and nutrient digestibility in broiler chicks as influenced by multi-enzyme (Hemicell +Roxazyme G) addition to starter diets containing palm kernel meal. Nine experimental diets were formulated such that diet 1 which served as control contained 0 % PKM without enzyme supplementation. Diet 2, 3, 4 and 5 contained 10, 20, 30 and 40 % PKM levels respectively with multi-enzyme supplementation while diets 6, 7, 8 and 9 contained 10, 20, 30 and 40 % PKM inclusion levels respectively without multi-enzyme supplementation. Five hundred and forty (540) day old hybro broilers of mixed sex in ratio (1: 1) were randomly assigned to nine diets in a completely randomized design. Each treatment was replicated thrice with 20 birds per replicate. The experiment lasted 35 days. The results showed that nutrient digestibility in the control and 10 % PKM with enzyme supplementation were similar but were significantly (P<0.05) higher than other PKM diets with or without supplementation. There was significant (P<0.05) improvement in body weight and body weight gain and reduce feed intake with supplementation. Birds fed with 20 % PKM with enzyme showed similarity with control birds in all the performance parameters measured. Enzyme addition significantly (P<0.05) reduced cost of feed consumed at 30 % level of inclusion with PKM while cost per kilogram weight gain and cost of production were lower at 20 % PKM level.
A two phased experimental study was conducted on 300, two-weeks-old Japanese quails to determine the effect of feeding diets containing varying levels of fermented cassava (Manihot esculenta ) peel meal on the growth performance, carcass characteristics and egg production of Japanese quail ( ). Japanese quails with mean initial body weight of 26.67 g and of mixed sexes were used. Fermented cassava peel meal (FCPM) was prepared by soaking fresh cassava peels in water (that is twice its weight) for three days. Thereafter, the peels were put in a jute bag and kept for 12 hours under a hydraulic press; sundried for a few days and milled using an attrition mill. During the growing phase, the birds were randomly allotted to four dietary treatments with 75 birds per treatment, each replicated three times, with the diets containing FCPM replacing 0, 25, 50 and 75 % maize to form diets T , T , T and T respectively. The diets were isonitrogenous, containing 24 % crude protein, and fed to the experimental birds for six weeks. Data were collected on feed intake, growth performance and carcass characteristics. The laying phase involved 120 female quails from he growing phase that were sexed to retain only the females. They were then allotted to four dietary treatments of three replicates per treatment; with 10 birds per replicate. The birds were fed the experimental diets containing FCPM replacing 0, 25, 50 and 75 % maize for eight weeks, and data were collected on egg production and egg quality parameters. Results show significant (p<0.05) differences in daily feed intake and nutrient digestibility among the treatments, while daily weight gain and feed conversion ratio (FCR) were not significantly (p>0.05) different, during the growing phase. For the laying phase, there were no significant (p>0.05) differences in daily feed intake, hen day production (HDP) and all the egg quality traits determined. Therefore, it can be concluded that dietary maize could be replaced with FCPM up to 50 % and 75 % in growing quails without any deleterious effects on growth performance and carcass characteristics respectively; whereas it can replace up to 75 % in the diet of laying Japanese quails without any adverse effect on egg production and egg quality traits.
Eighty one (81) weaned rabbits of mixed breeds and sexes (male and female) were randomly allotted to nine treatment groups with nine rabbits per treatment. Each treatment had three replicates with three rabbits per replicate. Processed tallow was included in the diets as a source of protein which was set at 16 % CP. The control diet had 100 % palm kernel cake (PKC) and 0 % tallow seed meal (TSM). Diets 1-4 contained cooked tallow seed meal (CTSM) included at 75 % PKC: 25 % CTSM, 50 % PKC: 50% CTSM, 25% PKC:75 % CTSM and 0 % PKC: 100 % CTSM, while groups 5-8 had fermented tallow seed meal diets (FTSM) and included at the same levels as in the cooked diets. Fifty four rabbits were randomly selected for slaughtering from the nine groups with six rabbits (male and females) per group. Fatty acid content of the hind leg of rabbits were determined. All the fatty acids measured were significantly (P<0.05) influenced by the processing methods except decosenoic acid methyl ester and pentadecanoic acid methyl esters. The levels of inclusion of tallow also significantly (P<0.05) affected all the fatty acids composition measured. It was therefore concluded that irrespective of the processing methods the use of tallow in the diets of rabbits has no negative effect on the fatty acid composition of rabbit meat.
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