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Amino acids composition and ileal digestibility of amino acids in energetics feedstuffs measured in pigs with ileo-rectal anastomosis

A metabolism assay that utilized pigs ileo-rectal anastomosis with complete isolation of large intestine was conducted to determine aparent (ADC) ileal amino acids digestibility coefficients of energetic feedstuffs for swine. The method employed was the total feces collection with three repetitions for evaluated feedstuff. The pigs, averaging 35,5kg initial live weight, were allotted in metabolism cages. The metabolism cage was considerate one experimental unit. The valued feedstuffs (corn, QPM corn, millet, sorghum and wheat bran) was single protein source of diets, every one with 8% of crude protein. The diets was provide in twice time and the quantity calculated of accord with the metabolic weight. In the feedstuffs evaluated glycine, threonine and proline exhibited the smaller values of ADC (respectively, 49,37; 59,36 and 59,62%), whereas arginine and glutamic acid presented the greater values of ADC (respectively, 89,67 and 85,09%).

Amino acids; digestibility; ileo-retal anastomosis; swine


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