The Effect of Replacing Sorghum Grains with Corn Along with Phytase and NSP Enzymes on Yield and Blood Parameters of Broilers

Abstract

In this research, the effects of replacing grain sorghum with corn along with phytase and NSP enzymes on the performance and blood parameters of broiler chickens were investigated. Different levels of grain sorghum (0, 5, and 10%) and two levels of phytase enzyme and NSP (0 and 0.1%) were used in feeding broilers. At the end of the period (42 days old), blood samples were taken and blood serum parameters were measured. During the test period, the amount of feed consumed, daily weight gain, food conversion ratio, and carcass characteristics were measured. The experimental treatments include 1- control diet (without sorghum and no enzyme), 2- control diet + without sorghum + 0.1 enzyme, 3- control diet + 5% sorghum + without enzyme, 4- control diet + 5% sorghum + 1 0. enzyme, 5- control diet + 10% sorghum + no enzyme and 6- control diet + 10% sorghum + 0.1 enzyme. The statistical design used in this experiment was a 2x3 factorial method in the form of a completely random design, with 6 treatments and 3 repetitions (15 chickens in each repetition), and a total of 270 Ross 308 strain broiler chickens were used. The results of the feed consumption showed that there was a statistically significant difference in the main effect of sorghum in the first and sixth weeks and in the main effect of enzyme only in the last week (p<0.05). The results of live weight gain showed that a statistically significant difference was observed only in the main effect of sorghum in the fifth and sixth weeks (p<0.05), (p<0.05) so the ratio without sorghum had the highest amount of live weight. The results of food conversion ratio showed that only in the main effect of sorghum, a statistically significant difference was observed in the fifth week (p<0.05), so the diet without sorghum showed the highest food conversion ratio. The results of the carcass traits showed that a statistically significant difference in the weight of the liver, spleen, pancreas, small intestine, large intestine and, cecum was observed only in the main effect of sorghum (p<0.05). The results of blood tests at the end of the experiment showed that there was a statistically significant difference in the amount of cholesterol, HDL, and LDL in the main effect of sorghum (p<0.05). The general results of the research showed that the addition of different levels of sorghum and enzymes in the diet did not have a favorable effect on the amount of feed consumption, live weight, and carcass traits, but the level of 10% sorghum improved the food conversion ratio in some weeks of the experiment.