The present study was to determine apparent metabolizable energy values corrected to zero nitrogen balance (AMEn) of Sunflower Meal (SFM) with and without enzyme by regression method in adult Leghorn roosters. 48 adult Leghorn roosters were used in a completely randomized design as a 2×4 factorial arrangement, two levels of enzyme (0, 350 g/ ton) × four levels (o, 5, 10, 15 %) of SFM. The average values of DM, Ash, CP, EE, Neutral Detergent Fiber (NDF), and acid Detergent Fiber (ADF) were 88.90, 6.5, 32.33, 3.1, 44.8, and 25% respectively and gross energy value of SFM was 4547 kcal/kg. By increasing the level of SFM in the experimental diets, the values of apparent dry matter metabolizability (ADMM), apparent organic dry matter metabolizability (AOMM), AMEn, and GE efficiency decreased significantly (p<0.05). The amount of AMEn decreased by 7.89%, equivalent to 260 kcal/kg in the diet containing 15% SFM compared to the control diet without SFM. The main effects of enzyme level caused a significant increase in AMEn values and GE efficiency (P<0.05). The improvement of AMEn was 1.14 percent. The equations for estimating AMEn of SFM, with and without enzyme addition were Y=2009.75-4.171X (R2=0.91) and Y=1596.14-2.414X (R2=0.91), respectively. AMEn value of SFM with and without enzyme by regression method was estimated 1592 and 1354 kcal/kg, respectively. The values obtained for AMEn of sunflower meal at the present study are recommended for formulating poultry diets and it could be probably effective in predicting bird performance.
Zamani, R. , Janmohammadi, H. , Didehban, Y. and Khodadadi, A. (2025). Determination of metabolizable energy value in Sunflower meal with and without enzymes addition by regression method in adult leghorn roosters. Iranian Journal of animal Science, (), -. doi: 10.22059/ijas.2025.372490.654008
MLA
Zamani, R. , , Janmohammadi, H. , , Didehban, Y. , and Khodadadi, A. . "Determination of metabolizable energy value in Sunflower meal with and without enzymes addition by regression method in adult leghorn roosters", Iranian Journal of animal Science, , , 2025, -. doi: 10.22059/ijas.2025.372490.654008
HARVARD
Zamani, R., Janmohammadi, H., Didehban, Y., Khodadadi, A. (2025). 'Determination of metabolizable energy value in Sunflower meal with and without enzymes addition by regression method in adult leghorn roosters', Iranian Journal of animal Science, (), pp. -. doi: 10.22059/ijas.2025.372490.654008
CHICAGO
R. Zamani , H. Janmohammadi , Y. Didehban and A. Khodadadi, "Determination of metabolizable energy value in Sunflower meal with and without enzymes addition by regression method in adult leghorn roosters," Iranian Journal of animal Science, (2025): -, doi: 10.22059/ijas.2025.372490.654008
VANCOUVER
Zamani, R., Janmohammadi, H., Didehban, Y., Khodadadi, A. Determination of metabolizable energy value in Sunflower meal with and without enzymes addition by regression method in adult leghorn roosters. Iranian Journal of animal Science, 2025; (): -. doi: 10.22059/ijas.2025.372490.654008
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