The Effect of Improving the Nutritional Value of Local Sunflower Meal Used in Broiler Diets by Adding a Mixture of Enzymes and Its Effect on Productive and Physiological Performance

Abstract

Abstract The current experiment was conducted in the poultry field of the department of animal production at the College of Agriculture - University of Kirkuk for the period from 28/12/2023 until 2/7/2024, to study the effect of improving the nutritional value of local sunflower seed meal used in broiler diets by adding a mixture of enzymes and its effect on production traits and blood biochemical traits. 280 one-day-old, unsexed Rose 308 broiler chicks were randomly distributed into seven treatments, with four replicates for each treatment (ten birds for each replicate). The treatments were as follows: (T1) the control diet without any additives, (T2) 25% of the soybean meal replaced with sunflower meal, (T3) 50% of the soybean meal replaced with sunflower meal, (T4) 75% of the soybean meal replaced with sunflower meal, (T5) 25% of the soybean meal replaced with sunflower meal and the enzyme mixture added, (T6) 50% of the soybean meal replaced with sunflower meal with the addition of the enzyme mixture and (T7) 75% of the soybean meal with sunflower meal with the addition of the enzyme mixture. The results showed that there were no significant differences (P≥0.05) for the nutritional treatments in the first, third, quarter and sixth weeks in Feed consumption rate. While in the second, fifth and cumulative weeks, the first treatment (control) was significantly differ (P≤0.05) to the other of the treatments at a rate of (390.25, 1160.50 and 4580.50 g/bird), respectively. In the rate of weight gain, it was significantly differ (P≤0.05). For the fourth treatment in the first week over the other of the treatments at a rate of (152.38 gm/bird), and the moral significantly (P≤0.05) was found for the second treatment over the other of the treatments in the second week at a rate of (359.25 gm/bird), while in the fourth week the seventh treatment was significantly differ (P ≤0.05) over the other treatments at a rate of (724.28 g/bird), and in the sixth week, the second and fourth treatments outperformed the other treatments significantly (P≤0.05) at a rate of (686.50, 655.50 g/bird) respectively. It was also noted that there were no significant differences (P≥0.05) in nutritional parameters for the third, fifth and seventh weeks. As for the feed conversion factor rate, there were significant differences (P≤0.05) in the first week of the fourth treatment over the other treatments at a rate of (0.76 gm feed/gm weight gain), but in the second and fifth weeks it decreased significantly (P≤0.05) in the treatment. Control (first) with a ratio of (0.77, 0.57 gm feed/gm weight gain), respectively.