Effects of Supplementing Different Levels of a Commercial Enzyme Complex on Performance, Nutrient Availability, Enzyme Activity and Gut Morphology of Broilers

Abstract

A trial was conducted to study the influence of different levels of a commercial enzyme complex on performance, nutrient availability, blood parameters, digestive tract measurements, amylase and trypsin activity of the digestive tract and gut morphology in broilers fed the typical diets in north China. There were four treatments: the control diet and the other three enzyme complex supplemented diets which were 180 mg/kg, 360 mg/kg and 720 mg/kg enzyme complex supplemented to the control diet, respectively. The birds fed the diets supplemented with 180 mg/kg and 360 mg/kg enzyme complex had better performance and nutrient availability, the activities of amylase and trypsin in the digestive tract in the two treatments were improved, the villus height and surface area of villus in the small intestine increased and the crypt depth and epithelial thickness of small intestine decreased. Relative weights of pancreas and relative weights and lengths of small intestine decreased. However, the addition of 720 mg/kg enzyme complex had no effects on these parameters and increased crypt depth and epithelial thickness of the small intestine. The data suggested that suitable supplementation of enzyme complex was beneficial for the birds, while excess enzyme complex inhibited secretion of endogenous enzyme and destroyed the structure of the small intestine.

Endo beta 1-3(4) glucanase supplementation of barley based diet and its effects on some hematological parameters of common carp (Cyprinuscarpio)

“…Ao et al (2010) reported that inclusion of multi enzyme (Endopower) containing 300 unit/g xylanase activity and 220 unit/g beta-glucanase activity in 0.1% level increased the amount of blood urea in piglets. Results of this study were compatible with the results of Yuan et al (2008) and were in compatible with Ao et al (2010).…”

“…According to results , enzyme supplementation at level of 0.1% showed the higher value between other treatments (Table 2). These results were incompatible with Oğuz et al (2011) who reported that enzyme application did not affect glucose but were compatible by Yuan et al (2008) results who reported that enzyme inclusion in levels of 180 and 360 mg.kg -1 significantly (P<0.05) increased the amount of blood sugar due to breaking the NSPs to small residues of glucose. Ao et al (2010) reported that glucose increased according to Endopower (contain 300 unit.g -1 xylanase activity and 220 unit.g -1 beta-glucanase activity) addition at the level of 0.1% and NSPase (7 unit.g -1 of α-1, 6-beta-galactosidase and 22 unit.g -1 of beta-1,4-mannanase) addition at the level of 0.2%.…”

“…These amino acids will be employed for development of other parts of animal body. (Stone, 2003) Yuan et al (2008) found that blood urea content in broilers fed enzyme treated diets at the levels of 0 mg/kg (control) and 720 mg/kg were so higher and in 360 mg/kg was lower values (p<0.05). This is because of best feed utilization in 360 mg/kg treatment.…”

Effect of Supplementation of Non Starch Polysaccharide Hydrolyzing Enzymes on Performance of Broilers

“…Edwin et al (2004) observed significant increase in fifth week body weight gain (P<0.01) of the Japanese quail supplemented with NSP hydrolyzing enzymes. The diets supplemented with 1X, 2X (LC) and 2X (HC) did not shown any significant differences in body weight gains of broilers these findings are supported by Yuan et al 2008, who reported that supplementation of multiple enzymes at 1X and 2X levels did not influence the BWG during overall period of 42 days. Narasimha Rao et al (1998) indicated that the supplementation of NSP enzyme preparation to maize-soy bean based diets did not yield any significant improvement in the performance of broilers.…”

Exogenous carbohydrases do not improve the physiological and meat quality parameters of female Japanese quail fed canola-based diets

“…Additionally, Jia et al (2012) and Radfar et al (2017) found no improvement in broilers fed diets containing 150 g/kg of CM supplemented with carbohydrase enzyme. The differences in the mode of action and performance of the carbohydrases could be attributed to variations in application methods and the activities of the enzymes that were used in various studies (Yuan et al, 2008).…”