Abstract
Mucuna pruriens (velvet bean) represents an interesting source of protein poorly studied. The effect of dietary inclusion of meal and protein isolate of Mucuna seeds on biochemical and oxidative stress parameter of broilers (135-one-day Cobb500 chickens) was investigated. Three isonitrogenous diets were formulated from soya bean meal (Control group: RTS), Mucuna meal (coded RFM) and Mucuna protein isolate (coded RIM). Each of the dietary treatments was triplicated with 15 birds per replicate in a completely randomized design. The birds were offered feed and water ad libitum. The results revealed significant (p 0.05) effect of N source on the organ total proteins with treatment RFM and RIM exhibiting lower but comparable levels in the Liver (2.01 and 1.98 g/dL), Heart (1.95 and 1.89 g/dL) and Kidney (1.92 and 1.91 g/dL). Triglycerides contents were significantly (p 0.05) higher in the liver of broilers fed RIM and RFM (2.49 and 2.36 mg/dL), in the Kidney of chicks fed RIM and RTS (2.27 and 2.34 mg/dL) and in the Heart of birds fed RTS and RFM (1.90 and 1.87 mg/dL). Broilers fed RFM presented the highest (p 0.05) Liver total cholesterol (1.61 mg/dL) and ALAT contents but with similar values with birds fed RTS (36.43 and 35.50 UI/L respectively). ASAT level was significantly high (p 0.05) in the Liver and Plasma (265.50 and 264.50 UI/L respectively) of broilers of RFM diet. In all the organs, MDA content was highest (p 0.05) in chicks of RIM batch. In the Heart and Plasma, chicks of RFM (3.23 and 5.05 μl/mg respectively) and RIM (5.45 and 5.35 μl/mg respectively) diets registered elevated rate of CAT. In view of these results, investigations remain to be carried out on the impact of the inclusion of meal and protein isolate of M. pruriens seeds in broiler’s diet during the growth-finishing phase.
Highlights
The high costs of animal feedstuff of protein origin tend to suggest that alternative protein sources are explored for poultry feed in order to achieve favorable economic returns [1] [2] [3] Feed is an important factor for broiler production
The results revealed significant (p < 0.05) effect of N source on the organ total proteins with treatment RFM and RIM exhibiting lower but comparable levels in the Liver (2.01 and 1.98 g/dL), Heart (1.95 and 1.89 g/dL) and Kidney (1.92 and 1.91 g/dL)
Blood total proteins are strongly associated with feeding regimes and reflect their fluctuation occurring during the protein metabolism [27]
Summary
The high costs of animal feedstuff of protein origin tend to suggest that alternative protein sources are explored for poultry feed in order to achieve favorable economic returns [1] [2] [3] Feed is an important factor for broiler production. Protein costs are higher than others i.e. it involves about 15% of the total feed cost [4]. Protein enhances muscle building and is very critical in animal diet formulation because it is the most limiting and expensive nutrient and the best indicator of diet quality [5]. There is, the need to explore the use of high-quality protein sources but cheap and nonconventional feeding stuff like M. pruriens
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