Abstract:
The aim of the paper was to study the effect of dietary crude protein level on the production performance of Minbei White Goose Goose during the growing period, thus to provide reference for the dietary crude protein requirements of Minbei White Goose during the growing period. The single factor experiment design was adopted to select 120 Minbei White Goose at 30-day growing period with similar weight and good health, being randomly divided into three groups. Each group had 40 (half male and half female) and was respectively fed with the trial diet with crude protein level of 14% (low protein), 15% (medium protein), and 16% (high protein), while the other nutrient levels remained basically the same. The advanced experiment period of the test had 7 days, and the formal experiment period had 60 days. The results showed that the daily rations of the three test groups could all meet the nutritional needs of Minbei White Goose during the growing period, and the Minbei White Goose in each test group could all be fed and grow normally, with no dead goose occurring. With the increase of crude protein level, the final weight and average daily weight gain of Minbei White Goose increased at different degree. The final weight of the group fed with medium protein and the group fed with high protein was respectively 69.6 and 108.7 g per goose higher than that of the group with low protein, and the average daily weight gain respectively increased 1.2 and 1.7 g·d
-1 per goose. The final weight and average daily gain of the group fed with high protein were significantly higher than that of the group fed with low protein (
P<0.05), while there was no significant difference in the final weight and average daily weight gain between the group fed with medium protein and the other two groups (
P> 0.05).