Haematological indices and economic benefit of utilizing blood meal at the expense of synthetic lysine and methionine in broiler chicken diets
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Abstract
Haematolgoical indices and economic benefit of utilizing blood meal at the expense of synthetic lysine and methionine in broiler chicken diets was studied. Three-hundred day- old broiler chicks were randomly allotted in a completely randomized design (CRD) into five treatment groups with three replicates of 30 birds each. Five experimental diets were formulated in such a way that blood meal was included at 0, 1, 2, 3 and 4 % and made to replace synthetic lysine and methionine representing: T1 (control), T2, T3, T4 and T5
respectively in both starter and finisher phases which lasted for 56 days. Birds were fed ad libitum with feed and water, The result showed that feed intake significantly (p<0.05) decreased only at 3 and 4 % inclusion levels of blood meal. The final live weight, average weight gain and feed gain ratio were not significantly (p>0.05) affected by dietary treatments. However, the cost (N)/Kg, total feed cost (N) and total production cost (N) significantly (p<0.05) decreased as the level of blood meal increases in the diets. Relative cost difference (%) indicated that 2, 5, 19 and 26 % cost savings were made with 1, 2, 3 and 4 % blood meal respectively rather than with crystalline lysine and methionine. The haematological indices were not significantly (p>0.05) different between dietary treatments and were within the normal reference values for healthy chickens. In conclusion, up to 4 % blood meal could completely replace lysine and methionine in broiler diets with better economic returns without sacrificing the growth performance and haematopoietic status of the birds.
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