The observed variables were live weight, carcass weight, and percentage carcass slice (thighs, breast, back, wings), pH, water holding capacity, shrinkage and meat tenderness.
The treatments were P0 (ration), P1 (ration+0.02% probiotic), P2 (ration+0.2% organic acid salt), P3 (ration+0.1% tetracycline), P4 (ration+0.02% probiotic+0.2% organic acid salt), P5 (ration+0.02% probiotic+0.2% organic acid salt+0.1% tetracycline). The sample used was 72 Pegagan ducks at one-day-old.
Keywords : Red dragon fruit (Hylocereus Polyrhizus), Vitamin C dan iodimetric titration.Abstract | The aim of this study was to determine the supplement effect of organic acid salt and probiotics derived from silage of kumpai tembaga grass on yield Carcass and meat of pegagan duck. The result of completed research find out there was are difference concentration of Vitamin C between packaged dragon fruit and without package, the concentration of Vitamin C in packaged dragon fruit was increase the concentration of Vitamin C from the first day (11,1680 mg/100 gram of sample) to the third day (14,8017 mg/100 gram of sample) and decrease until the fifth day (10,4743 mg/gram of sample), otherwise by another treatment without package the concentration of Vitamin C are increase from the first day (7,4928 mg/100 gram of sample) to the sixth day (19,6784 mg/100 gram of sample) and decreased until the eighth day (14,1395 mg/100 gram of sample).
Analysis process was conducted by iodimetric titration method through the sample of dragon fruit with saving period and packaging varied. The research to determine “Analysis the Content of Ascorbic Acid in the Red Dragon Fruit by Iodimetri” Vitamin C concentration of postharvest red dragon fruit ( Hylocereus Polyrhizus) and at the same time to recognize those the packaging could affected conten of obtained Vitamin C.
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