عنوان مقاله [English]
Protein nutrition and amino acid (AA) supply have a positive effect on survival and immunity of bee colonies. The aim of this study was to evaluate the effect of L-Methionine, L-Lysin, and L-Threonine on body weight, protein, and lipid reservation of honey bees. For this purpose, 78 beehives were randomly allocated into 13 groups and received one of the experimental treatments. Groups Met-1, Met-2 and Met-3 received 0.3, 0.6 and 1.2 gram in L-Methionine sugar nectar respectively. Groups Lys-1, Lys-2 and Lys-3 received 1.51, 3.02- and 6.05-gram L-Lysin in sugar nectar respectively, moreover, groups Thr-1, Thr-2, Thr-3 received 0.572, 1.145- and 2.29-gram L-Threonine in sugar nectar. In addition, the combination of three different levels of three different AA were considered as (L-Methionine, L-Lysin, and L-Threonine) MLT-1, MLT-2 and MLT-3 respectively. A group has also considered as control that did not receive any additional AA supplements. The body weight, body protein and lipid content have been assessed at the end of the experiment. The results of this study indicated that MLT-3 group showed higher body weight and protein content comparing to the other groups (p≤0.05). In addition, MLT-1 and MLT-2 showed higher body weight compared to the rest of the treatments (p≤0.05). Based on the result of this study, different levels of L-Methionine caused higher protein reservations compared to the control group (p≤0.05). The results show that L-Methionine, L-Lysin, and L-Threonine did not affect body lipid reservation of honey bees (p≥0.05). In conclusion, the addition of a combination of L-Methionine, L-Lysin, and L-Threonine to diet, can increase body protein reserve and bodyweight leading to increase the productivity and survival of honey bee colonies.