Comparative Studies on Nutrient Value and Ileal Amino Acid Digestibility of Palm Kernel Cake for Broiler in Direct and Indirect Methods
Journal Title: Journal of Agriculture, Food, Environment and Animal Sciences - Year 2022, Vol 3, Issue 2
Abstract
Two digestibility trials were performed to determine apparent ileal digestibility (AID) of crude protein (CP) and amino acids (AAs) of untreated palm kernel cake (uPKC) and Palm kernel cake treated with Lactobacillus plantarum RI11 (LAB-PKC) from 21 to 32 and 18 to 28 days in the first and second trial, respectively. PKC was treated by L. plantarum RI11 for 14 days with moisture to PKC ratio 1:1 (v/w) before to be fed to the broilers. Digestibility trials were performed in direct method and indirect method. A total of 36 broilers were fed diet containing 90.57% (w/w) uPKC and LAB-PKC as sole source of CP and AAs in direct method, whereas 108 broilers were fed with corn-soybean diet substituting with 25% (w/w) uPKC and LAB-PKC in indirect method. All diets in both method contained titanium dioxide as indigestible biomarker to determine the AID of CP and AAs of PKC. The results showed that both uPKC and LAB-PKC determined by the indirect method showed higher AID than that of the direct method (P˂0.05). The CP and AA content of LAB-PKC were higher (P˂0.05) than uPKC. However, LAB-PKC showed lower (P˂0.05) fat content than uPKC. The reduction of NDF content in LAB-PKC could be considered as a significant factor for improving the nutritive value of the PKC and the digestibility of CP and AA in the current study. The findings showed that AID of CP and AA for LAB-PKC were improved in the direct method but not significant in the indirect method.
Authors and Affiliations
Fu Haw LEE
Keywords
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