INTESTINAL MORPHOLOGY OF NATIVE CHICKENS AT 20 WEEKS-OLD SUPPLEMENTED BY DL-METHIONINE AND L-LYSINE HCL INTO FEED

Abstract

The aim of this study was to determine the effect of the supplementation of dl-methionine and l-lysine HCl into feed based on cafeteria standards to intestinal morphology of native chickens at 20 weeks-old. A total of 128 fourteen week-old native chickens were used in this study. The native chickens were divided into 4 treatments groups with 4 replications. The dietary treatments were: T₀ (feed based on cafeteria standard), T₁ (feed based on protein standard of NRC), T₂ (cafeteria feed+0.09% dl-methionine+0.22% l-lysine HCl), T₃ (cafeteria feed+0.19% dl-methionine+0.42% l-lysine HCl). The data collected were villus height, crypt depth and villus width of duodenum, jejunum and ileum of native chickens aged 20 weeks. The result of this study for T₀, T₁, T₂ and T₃ showed that villus height of duodenum were 863.03; 1237.85; 1171.60 and 1261.15 µm, crypt depth  212.70; 192.08; 210.25 and 251.85 µm, villus width 168.74; 168.53; 213.61 and 188.60 µm. Villus height of jejunum were 1381.48; 1088.70; 1072.68 and 1383.15 µm, crypt depth  272.,05; 261.83; 225.00 and 205.65 µm, villus width 188.28; 166.41; 216.26 and 182.95 µm. villus height of ileum were 798.03; 863.35; 882.88 and 828.70 µm, crypt depth 199.58; 199.58; 154.68 and 145.78 µm and villus width 181.13; 154.55; 201.25 dan 175.65 µm, respectively. It can be concluded that supplementation of dl-methionine and l-lysine HCl was not effected upon villus height, crypt depth and villus width of duodenum, jejunum and ileum of native chickens aged 20 weeks.