Nutrient Composition, Growth Response and Economics of Production of Rabbits Fed Diet Containing Graded Levels of Fermented Cassava Starch Residues

作者：Aro S O; Falowo A B^*; Omojola T O

来源：Animal Nutrition and Feed Technology, 2017, 17(1): 65-73.

DOI：10.5958/0974-181X.2017.00007.5

• Cassava starch residues
• Economics
• Fermentation
• Nutrient composition
• Performance
• Rabbits

This study was conducted to compare the nutrient composition of unfermented cassava starch (UFCSR) with microbially fermented cassava starch residues (MFCSR) and to investigate the effect of graded levels of MFCSR on growth performance and economics of rabbits. Thirty rabbits with an average initial live weight of 624.50 +/- 42.28 g, aged 6-8 weeks were randomly allotted to five dietary treatments with six rabbits per treatment during a 12-weeks feeding trial. Cassava starch residues (CSR) were fermented with three different strains of microorganisms, viz Lactobacillus delbrueckii, Lactobacillus coryneformis and Aspergillus fumigatus, for five days to obtain the MFCSR. The MFCSR was included at 0, 15, 30, 45 and 60 percent levels in diets D1, D2, D3, D4 and D5, respectively. The fermentation of CSR with three strains of microorganisms resulted into higher (P < 0.05) ME (2760 +/- 10.20 kcal/kg), crude protein (7.00 +/- 0.09%), ash (3.04 +/- 0.16%) contents and lower crude fibre (14.77 +/- 0.43%), cyanide (9.84 +/- 0.14 mg/kg), tannins (0.05 +/- 0.01g/100g) and phytates (7.47 +/- 0.28 mg/kg) contents compared to unfermented cassava starch residues (UFCSR). There were significant (P < 0.05) differences in the body weight gained (BWG), feed consumed, feed conversion ratio (FCR), cost of feed per unit weight gained for all treatments. Rabbits on the diet D3 had the highest BWG (597.50 +/- 48.23g), followed by diet D1 (520.00 +/- 48.23g) and least on diet D5 (384.00 +/- 48.23g). Similarly, rabbit on the diet D3 had best FRC (8.43 +/- 0.85) compared to other treatments. The highest profit was recorded from sales of rabbits on diet D3 ((sic) 226.35 +/- 12.55), followed by diet D1 ((sic) 121.70 +/- 12.55) and least on diet D5 ((sic) 51.61 +/- 12.55). Considering both the economics of production and performance characteristics, 30% of MFSCR was found to be the best level of inclusion for optimum rabbit production.

• 出版日期2017-1