Chemical characterization and evaluation of alibambang parang (Bauhinia malabarica Roxb) seeds as a feed ingredient for broilers
1999
Billena, M.S.
Alibambang [Bauhinia malabarica Roxb.] was found to contain 20.63 percent crude fat, 27.82 percent crude protein, 7.30 percent crude fiber, and 40.21 percent nitrogen-free extract, on dry matter basis. The gross energy was found to be 5276 kcal/kg. Autoclaving of the seeds did not change its proximate composition. Mineral analysis revealed that alibambang seeds contain relatively high levels of copper (16.67 mg/kg DM [dry matter] and iron (90.52 mg/kg DM). Of the total protein recovered, the seed protein fractions were composed of 32.11 percent globulin, 30.11 percent glutelin, 19.91 percent albumin, and 1.83 percent prolamin. Amino acid analysis showed that the seed proteins of raw alibambang had relatively high proportion of acidic amino acids such as glutamic acid (18.77 percent), aspartic acid (9.11 percent), and basic amino acids consisting of lysine (8.439), and arginine (7.26 percent). Autoclaving of the seeds had decreased the levels of amino acids in alibambang. The specific gravity, refractive index, iodine number, saponification number, peroxide value, and free fatty acid number of alibambang seed oil were determined. Gas chromatography of the fatty acid methyl esters revealed 20.48 percent palmitic, 10.41 percent stearic, 15.00 percent oleic, and 52.90 percent linoleic acid. Analysis of raw alibambang's antinutrient factors showed 23.05 Trypsin Units Inhibited (TUI/mg, 111.60 of catechin equivalent/mg, and 14.31 g phytic acid/kg. Autoclaving completely eliminated antitryptic activity while tannin and phytic acid were not affected. Feeding trials showed that at the starter phase, broilers fed with diets containing 5 percent raw and autoclaved alibambang seeds had lower average body weight gain and feed consumption than broilers fed diets without alibambang. On the other hand, a better growth performance was observed during the grower phase. No significant difference in body weight gain and feed consumption was even observed among the three diets. Hence, raw alibambang seeds should be incorporated at the grower diets
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