1- Sari University of Agricultural Sciences and Natural Resources, Sari, Iran
2- ari University of Agricultural Sciences and Natural Resources, Sari, Iran
2- ari University of Agricultural Sciences and Natural Resources, Sari, Iran
Abstract: (38 Views)
Introduction and Objective: Due to the high price of protein sources, breeders are looking for alternative sources that are available at a lower cost. Some additives such as Vemozyme enzyme and emulsifiers increase the availability and digestibility of nutrients, especially protein and fats. Therefore, this research was conducted to investigate the effect of adding multi-enzyme and emulsifier in diets containing rapeseed meal with different energy levels on performance, carcass characteristics, nutrient digestibility and of blood parameters concentrations in broiler chickens.
Materials and methods: 800 one-day-old male broilers of Ross 308 strain in a completely randomized design with 2×2×2 factorial arrangement including two levels of energy (recommended and one hundred kilocalories less than the recommended amount), two levels of Vemozyme enzyme (0 and 0.01% of diet) and two levels of emulsifier (0 and 0.05% of diet) distributed in 40 experimental units with five replications and 20 birds per replication and reared for 42 days.
Results: The highest weight gain during the growth, finisher and the whole period, was related to the recommended energy levels, using enzyme and emulsifier. The best feed conversion ratio in the starter, growth and the whole period was related to the recommended levels of energy and the use of enzyme and emulsifier, and in the final period related to diets with low energy level and the use of emulsifier and enzyme. The conversion ratio in the whole period using diets with low energy level and using enzyme and emulsifier was similar to the conversion ratio of diets with recommended energy without using enzyme and emulsifier. The highest breast percentage was related to the diets with the recommended energy level and diets containing Vemozyme enzymes. Diets containing enzymes showed better digestibility of organic matter, protein and fat. The results showed that the use of emulsifier in the diet improves the digestibility of protein and fat.
Conclusion: The results of this experiment showed that the use of vemozyme enzyme and emulsifier in diets containing canola with energy levels lower than the recommended amount can be effective in the final period in improving feed conversion ratio and digestibility of some nutrients, as well as reducing the blood triglycerides and VLDL concentrations.
Materials and methods: 800 one-day-old male broilers of Ross 308 strain in a completely randomized design with 2×2×2 factorial arrangement including two levels of energy (recommended and one hundred kilocalories less than the recommended amount), two levels of Vemozyme enzyme (0 and 0.01% of diet) and two levels of emulsifier (0 and 0.05% of diet) distributed in 40 experimental units with five replications and 20 birds per replication and reared for 42 days.
Results: The highest weight gain during the growth, finisher and the whole period, was related to the recommended energy levels, using enzyme and emulsifier. The best feed conversion ratio in the starter, growth and the whole period was related to the recommended levels of energy and the use of enzyme and emulsifier, and in the final period related to diets with low energy level and the use of emulsifier and enzyme. The conversion ratio in the whole period using diets with low energy level and using enzyme and emulsifier was similar to the conversion ratio of diets with recommended energy without using enzyme and emulsifier. The highest breast percentage was related to the diets with the recommended energy level and diets containing Vemozyme enzymes. Diets containing enzymes showed better digestibility of organic matter, protein and fat. The results showed that the use of emulsifier in the diet improves the digestibility of protein and fat.
Conclusion: The results of this experiment showed that the use of vemozyme enzyme and emulsifier in diets containing canola with energy levels lower than the recommended amount can be effective in the final period in improving feed conversion ratio and digestibility of some nutrients, as well as reducing the blood triglycerides and VLDL concentrations.
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