Energy Value of Cassava Products in Broiler Chicken Diets with or without Enzyme Supplementation

Abstract

This study investigated the metabolizable energy (ME) intake, net energy of production (NEp), heat production (HP), efficiencies of ME use for energy, lipid and protein retention as well as the performance of broiler chickens fed diets based on cassava chips or pellets with or without supplementation with an enzyme product containing xylanase, amylase, protease and phytase. The two products, cassava chips and pellets, were analysed for nutrient composition prior to feed formulation. The cassava chips and pellets contained 2.2% and 2.1% crude protein; 1.2% and 1.5% crude fat; and 75.1% and 67.8% starch, respectively. Lysine and methionine were 0.077%, 0.075%, and 0.017%, 0.020% protein material, respectively, while calculated ME was 12.6 and 11.7 MJ/kg, respectively. Feed intake to day 21 was lower (p<0.01) on the diet containing cassava chips compared to diets with cassava pellets. Enzyme supplementation increased (p<0.01) feed intake on all diets. Live weight at day 21 was significantly (p<0.01) reduced on the diet based on cassava chips compared to pellets, but an improvement (p<0.01) was noticed with the enzyme supplementation. Metabolizable energy intake was reduced (p<0.01) by both cassava chips and pellets, but was increased (p<0.01) on all diets by enzyme supplementation. The NEp was higher (p<0.01) in the maize-based diets than the diets containing cassava. Enzyme supplementation improved (p<0.01) NEp in all the diets. Heat production was highest (p<0.01) on diets containing cassava pellets than on cassava chips. It is possible to use cassava pellets in diets for broiler chickens at a level close to 50% of the diet to reduce cost of production, and the nutritive value of such diets can be improved through supplementation of enzyme products containing carbohydrases, protease, and phytase.

Performances and haematological profile of broilers fed fermented dried cassava (Manihot esculenta Crantz)

“…Result in the present study showed that feeding gathot decreased serum total triglyceride and abdominal fat content of broilers. This finding was slightly different from that reported by Bhuiyan and Iji (2015), in which inclusion of cassava pellet or cassava chip in broiler diets at up to 50 % (with enzyme supplementation) did not affect the abdominal fat weight of broilers. It has been reported that dietary fibre was responsible for the lowered serum triglyceride and abdominal fat content of broilers (Rama Rao et al 2005;Khempaka et al 2014).…”

Effects of dietary inclusion of cassava root flour in broiler diets on growth performance, carcass characteristic and haematological parameters

“…The lower weight of carcass, dressed weight and dressing percentage were due to the poor growth performance of these birds. The reason for the higher weight recorded for intestine with digesta may be partly due to delay in the digestion of cassava flour in the gastro-intestinal tract of the birds (Bhuiyan and Iji, 2015). The weight of crop with or without digesta reduced in birds fed on diets containing cassava flour.…”

Physiology, Growth and Yield of Different Cassava Genotypes Planted in Upland with Dry Environment during High Storage Root Accumulation Stage

“…Cassava is an important economic crop in the world, and it is widely cultivated in tropical and subtropical regions [1,2]. There are many uses of cassava, such as for food, animal feed, alcohol, biofuel, detergents, textiles, plastic, and other pharmaceutical products [3][4][5][6]. Due to the world population increasing, therefore, the global demand for cassava is also scaling up.…”