Effects of low-protein diet supplemented with compound enzymes on growth performance,nutrient utilization efficiency and meat quality of geese
The purpose of this study was to explore the effects of low-protein diets supplemented with compound enzymes on growth performance,nutrient utilization efficiency and meat quality of meat geese.Ninety-six 28-day-old healthy geese with an initial body mass of[(1223.47±30.69)g]were randomly divided into 3 groups with 4 replicates in each group and 8 geese in each group.The control group was fed with low-protein diet,the low-dose group was fed with low-protein diet supplemented with 0.5 g/kg complex enzyme,and the high-dose group was fed with low-protein diet supplemented with 1 g/kg compound enzyme.The results showed that the beginning of the experiment,under the premise that the average body weight of each group was not significantly different(P＞0.05),adding 1 g/kg compound enzyme in the diet significantly increased the average daily gain of meat geese(P＜0.05);The final body weight of meat was significantly increased when the dosage of compound enzyme was 1g/kg(P＜0.05).Compared with the control group,dietary supplementation of 0.5 and 1 g/kg complex enzyme significantly decreased metabolic energy and fat(P＜0.05),crude protein and crude fiber significantly decreased when 1 g/kg compound enzyme was added(P＜0.05),and feed compound enzyme had no significant effect on neutral detergent fiber(P＞0.05).The addition of 0.5 and 1 g/kg compound enzyme in low protein diet significantly increased the brightness and shearing force of meat(P＜0.05),and the addition of 1 g/kg significantly increased the redness and water content of meat(P＜0.05).The addition of compound enzyme had no significant effect on pH and yellowness of meat(P＞0.05).In a word,adding compound enzyme to low-protein diet can effectively improve the growth performance and nutrient utilization of meat geese,and have a significant effect on some indexes of meat quality.Under the experimental conditions,the optimum addition amount of compound enzyme is 1 g/kg.
万方数据
维普
