The effects of feeding concentrate diet containing crude glycerin supplementation and castration on carcass composition and meat quality of Thai Native x Anglo-Nubian (TN-AN) goats were investigated. Twenty TN-AN goats at the age of 12 months old with 24.75±1.33 kg initial live weight were allotted into a 2x2 factorial arrangement in completely randomized design when factor A was assigned for sexes (intact and castrated male) and factor B was assigned for 2 types of concentrate diet (control diet and diet supplemented with 10 % crude glycerin). Goats were intensively raised in individual pens with ad libitum water and Atratum grass (Paspalum atratum), while 2 % of concentrate diets was provided. After 90 days of feeding, 3 goats from each treatment combination were randomly sampled and sacrificed for further examination. From the study, castrated male goats had significantly higher slaughter and carcass weight, carcass fat percentage and chemical fat percentage than those of the intact males (P < 0.01). In addition, muscle from castrated male goats was more tender and lighter in color as compared with intact male goats (P < 0.01). Goats receiving a diet with extra glycerin had significantly higher weight at slaughter, warm carcass weight, carcass fat, and chemical fat percentages than those on the control diet. Therefore, it could be concluded that feeding goats with a diet of 10 % supplementary glycerin and castration could lead to better slaughter and warm weight, whereas a higher fat content in the carcass and muscle are observed.

Kepok banana corm is one of the natural ingredients that has been obtained and can provide many benefits because of its excessive flavonoid content. This study aims to determine the types of flavonoids contained in the kepok banana weevil extract. Methods of detection and discovery of flavonoid measurement methods used include reaction, thin layer chromatography, and LC-MS/MS, and spectrofotometri for total flavonoid content compared to rutin as a flavonoid standard. The results showed that kepok banana corm extract contains a class of flavonoid compounds including rutin, kaempferol 3-O-rhamnoside-7-O-glucoside, quercetin 3 glycocide, and chrysoeriol-7-O-glycuronyl, with a total flavonoid content of 6.19. ±0.65%.