Chemical composition and standardised ileal digestible amino acid contents of Lathyrus (Lathyrus cicera) as an ingredient in pig diets
2009
Mullan, B.P. | Pluske, J.R. | Trezona, M. | Harris, D.J. | Allen, J.G. | Siddique, K.H.M. | Hanbury, C.D. | van Barneveld, R.J. | Kim, J.C.
Lathyrus cicera is a grain legume that is well adapted to grow in low rainfall regions. However, it contains a neurotoxin, 3-(-N-oxalyl)-l-2,3-diaminopropionic acid (ODAP), which can cause paralysis of the lower limbs, known as “lathyrism”. An experiment was conducted to measure the nutrient content and ileal digestible amino acid content of a recently-released low ODAP Lathyrus variety chalus. Chemical analyses and total tract digestibility showed that the new Lathyrus variety chalus contained 0.9g ODAP/kg, 265g crude protein/kg and 13.5MJ digestible energy/kg on an as-fed basis. The ileal digestible nutrient content of chalus was measured with six grower pigs (Large WhitexLandrace, 43±0.3kg) fitted with a simple T-piece cannula. The chalus contained 12.9, 1.4 and 5.4g of apparent ileal digestible lysine, methionine and threonine, respectively/kg. Standardised ileal digestible amino acid content was calculated using published endogenous amino acid losses determined in 34-kg-growing pigs under a protein-free method. The chalus contained 14.3, 1.5 and 6.0g of standardised ileal digestible lysine, methionine and threonine, respectively/kg.
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