Proximate Composition of Three Head Organs (Brain, Eyes, Tongue), Three Visceral Organs (Liver, Heart, Gizzard), Skin and Muscle of Muscovy Duck- hen

Abstract

The proximate compositions of brain (A), eyes (B), tongue (E), liver (D), heart (F), gizzard (C), skin (H) and muscle (G) of Muscovy duck-hen were determined. The proximate composition values ranged as follows (values in g/100g on dry weight basis) ash (0.18 – 3.77 ± 1.40), moisture (0.50 – 4.78± 1.40), protein (3.24 – 79.9 ± 29.7), fat (0.23 – 5.60 ± 2.04), carbohydrate (6.19 – 95.8 ± 33.6), dry matter (95.22 – 99.5± 1.40) and organic matter (91.45 – 99.27± 2.63) with all the parameters being significantly different among the samples. Metabolizable energy contribution from protein, fat and carbohydrate in the samples ranged from (kJ/100g/kcal/100g): 740(180) – 7924(1864). Percentage energy contribution range was 5.53/5.70 – 59.2/59.1. Whereas the crude fat ranged from 0.23 – 5.60 g/100g, the total fatty acid (TFA) ranged from 0.217 – 5.08 g/100g or EPg/100g with corresponding energy of (kJ/100g versus kcal/100g): 8.51/2.07 – 207/50.4 and 8.03/1.95 – 188/45.7 respectively. UEDP% (assuming 60% energy utilization) range was 1.95/1.96 – 49.0/48.9. Approximate sample weight equivalents to the energy requirements of adults and infants had ranges of : for 2500kcal per day, sample range was 617 – 644g (adults) and at 3000kcal per day, requirement was 741 – 773g (adults); infant at 740kcal would require 183 – 191g. Water balance for protein metabolism had value range of 6.48 – 160ml. Correlational analyses of samples at r=0.01 gave these results: A/B (0.3024), B/E (0.1794), A/E (0.9916), C/D (0.9994), D/F (0.9892), C/F (0.9923) and G/H (-0.2014). Hence, Muscovy duck-hens are good sources of protein, metabolizable energy and low fat.