True digestibility of the essential amino acids of partly dehulled and sunflower meal with hulls by balanced experiments with birds from Gallus species

Sashka Chobanova, Dimo Penkov

Abstract: Using adapted methods for balanced experiments with poultry, the true digestibility coefficients
of the essential amino acids of two of the most used plant protein sources – sunflower meal 25 (from
seeds with hulls) and 37 (from partly dehulled seeds) have been established. The true digestibility
coefficients by using of two methods – with intact and randomized (caecoectomized) birds have been
compared. The mean digestibility of sunflower meal 25 is lower by intact (83.95 ± 0.95 versus 88.34 ±
0.56 of sunflower meal 37), so as by randomized birds (88.16 ± 0.08. versus 89.55 ± 0.12 of sunflower
meal 37). The differences by lots are statistical significant (p ≤ 0.5) for both of the used methods. The
authors recommend updating of the data about the protein nutrition every of fodders in 5 years.

Keywords: amino acids; poultry; sunflower meal; true digestibility

Date published: 2022-06-28