ABSTRACT The aim of the current research was to study the effect of canola meal processing methods on the traits of egg, fertility, cecal microbial population, and the carcass of broiler breeder hens. Canola meal was processed by fermentation and enzymatic hydrolysis methods, then was fed to the hens. Four hundred and fifty broiler breeder hens of Ross strain weighing 3300±150 g (40 weeks) were used for 12 weeks. A completely randomized design was used with 6 treatments (unprocessed, processed by Lactobacillus Plantarum, Bacillus Subtilis, Aspergillus Oryzae, Neurospora Sitophila, and Alcalase enzyme) and 5 replications. Fifteen hens were included in each pen. The data collected were analyzed using the LSmeans procedure of SAS software. The treatment effect was significant on the fertility hatchability (p<0.05). The highest fertility hatchability was observed in the processing method by Neurospora Sitophila fungi (85%). Experimental treatments had significant effects on the germs and pH of the caecum (p<0.05). The use of processing methods reduced the population of salmonella and coliforms and increased the population of lactobacillus in the caecum. Most of the population of salmonella, lactobacillus, and coliforms of the caecum was observed in the treatments of unprocessed, Bacillus Subtilis bacteria, and unprocessed, respectively. The effect of the experimental treatment had significant effect on abdominal fat (p<0.05). Processing methods of canola caused the reduction of abdominal fat. The highest decrease in abdominal fat was observed in the treatment that processed Aspergillus Oryzae fungi (1.89%). Processing of canola meal improved its digestibility and reduced its anti-nutritional factors.

ABSTRACT The aim of this research was to study the effect of thermal and non-thermal processing methods on chemical composition, quality indicators and apparent digestibility of soybean nutrients. For this, four processing methods (unprocessed, extruded, thermal, and gamma radiation) were applied on two soybean varieties (Katol & Caspian). Rations were formulated based on kinds of soybean (processed and unprocessed). The experiment was continued using 600 male Ross broiler chickens during 3 feeding phases (starter, grower, and finisher). Traits were measured and analyzed with the Lsmeans procedure by SAS software. The results showed the interaction effects of soybean varieties and processing methods were significant on the crude fiber, calcium, and phosphorus (p<0.05). The effect of soybean variety was significant on the crude protein, crude fiber, and phosphorus (p<0.05). Also, the effect of processing methods was significant on the dry matter, crude fiber, and phosphorus (p<0.05). The effect of soybean variety, processing methods, and their interaction were significant on urease activity, KOH protein solubility, and Protein dispersibility index (p<0.05). The results of the current study showed that the best soybean variety and the processing method is the Caspian and thermal, respectively.