Standardized Ileal Digestibility of Amino Acids in Nacedero (Trichanthera gigantea (Humboldt & Bonpland.) Nees) Foliage, Copra Expeller, and Soybean Meal Fed to Growing Philippine Native Pigs (Sus scrofa domesticus Erxleben, 1777)

Authors

Mary Arnel D. Garcia, Benguet State University, La Trinidad, BenguetFollow
Rommel C. Sulabo, University of the Philippines Los BanosFollow

Publication Date

3-31-2021

Abstract

The experiment was conducted to determine the apparent ileal digestibility (AID) and standardized ileal digestibility (SID) of amino acids (AA) in nacedero (Trichanthera gigantea Humboldt & Bonpland.) Nees; NAC) foliage, copra expeller (CE), and soybean meal (SBM) fed to growing Philippine native pigs (Sus scrofa domesticus Erxleben, 1777). Eight barrows of Black Tiaong strain (initial BW of 36.44 ± 1.59 kg; 132 to 135 d) installed with a T-cannula at the distal ileum were housed individually in metabolism cages and randomly allotted to a replicated 4 × 3 Youden square design with four diets and three periods. One diet contained 30% soybean meal (SBM) and two diets were formulated with 20% SBM and 30% (as-fed basis) NAC or CE. The last diet was a N-free diet used to measure basal endogenous losses of crude protein (CP) and AA. The SID of CP and all indispensable AA in CE were less (P<0.001) than in SBM, while NAC foliage were similar to those in SBM. However, the amount of SID CP and AA in NAC were remarkably lower (P < 0.001) than in CE and SBM. To our knowledge, this is the first time the AID and SID of AA in NAC have been determined in Philippine native pigs. Results of this experiment indicate that NAC foliage has good palatability and AAs are well digested by growing Philippine native pigs at a rate similar with SBM. However, when NAC is fed fresh, the SID concentration of CP and AA (g/kg) were the least (P < 0.001) compared with CE and SBM. Drying and processing of NAC foliage into a meal may be considered to increase AA concentrations in the diet.

Recommended Citation

Garcia, Mary Arnel D. and Sulabo, Rommel C. (2021) "Standardized Ileal Digestibility of Amino Acids in Nacedero (Trichanthera gigantea (Humboldt & Bonpland.) Nees) Foliage, Copra Expeller, and Soybean Meal Fed to Growing Philippine Native Pigs (Sus scrofa domesticus Erxleben, 1777)," The Philippine Agricultural Scientist: Vol. 104: No. 5, Article 5.
Available at: https://www.ukdr.uplb.edu.ph/pas/vol104/iss5/5