اثرات برنامهریزی تغذیهای الرو تاسماهی استرلیاد(ruthenus Acipenser)با استفاده از جیره مبتنی بر پروتئین گیاهی بر عملکرد رشد و شاخصهای خونشناسی.

The objective of this study was to evaluate the performance of nutritional programming on growth and hematological indices of sterlet sturgeon (Acipenser ruthenus) during the larval stage by partial replacement of fish meal (FM) with soybean meal (S). Fish with initial mean weight of 0.32 ± 0.01 g were randomly distributed into twelve circular concrete tanks (260 fish per each tank) and fed four experimental diets with substitution levels of 0 (control/FM), 15% (S15), 30% (S30) and 45% (S45) of fish meal with soybean meal during three phases in three replicates. In phase 1 (programming), fish were fed four different diets for 28 days. All the groups were then fed with FM during intermediate phases and S45 at final phase (challenge) for 28 days. At the end of each phase, growth indices were measured. Hematological indices including hemoglobin, hematocrit, mean corpuscular volume, mean corpuscular hemoglobin and mean corpuscular hemoglobin concentration were assessed at the end of the challenge phase. The growth performance was not significantly different in either programming or intermediate phases (P > 0.05); however, final weight, weight gain, specific growth rate, and average daily growth were significantly higher in S45 than FM during phase 3 (P < 0.05). In intermediate phase, feed conversation ratio was significantly reduced in FM than the other treatments (P < 0.05). Moreover, no significant difference was indicated among the groups in hematological indices (P > 0.05). According to the obtained results, early nutritional programming could effectively enhance the adaptation of sterlet sturgeon to plant-based protein later in life. [ABSTRACT FROM AUTHOR]