Determination Of Appropriate Energy And Protein Amount On Laying Qualis' Feed Of Brood And Finishing Stage

This experiment was carried out to determine appropriate energy and protein levels in brood and finishing stage diet for laying quail.We used two-factor test experimental design, two energy (A factor) levels and three protein (B factor) levels which were divided into six groups,each with four replications having 20 quails. In the trial period, recorded the growth performance and production performance, deteminationed the eggs quality and nutrient retention.The results showed that, factor A (ME) on the 18-day-old weight,weight gain and daily gain of quails were not significantly affected in brood stage (P>0.05),but quails of low-energy group were shown the trend that various indicators was higher than the high - energy group; factor B (CP) were significantly affected on various indicators (P <0.05), all indicators increased with the level of crude protein in feed higher.Factor A (ME) on the weight gain and daily gain of quails were significantly affected in finishing time(P <0.05),the two indicators of quails in high-energy group were significantly higher than the low-energy group; There was a significant effect of factor B (CP) on the 39-day-old weight, weight gain and daily gain in finishing stage(P <0.05), the 39-day-old body weight of quails in middle-and higher protein levels groups were significantly higher than the low protein level group; and the quail,s weight gain and ADG of low-protein group were significantly higher than the other two groups (P <0.05).There was significant interaction on laying rate and average egg production by A, B two factors (P <0.05).Laying rate of group 1 with low-energy and low-protein was the highest, followed by group 6 with high-energy and high-protein levels, group 4 with high-energy and low - protein was the lowest; average egg production of cluster 6 with high-energy and high-protein was the highest, followed by low-energy low-protein group 1, group 3 with low-energy and high-protein was the lowest.11 week age egg quality determination: The high energy group's shell weight, relative eggshell weight and eggshell strength were obviously higher than the low energy group (P<0.05); factor B (CP) not obviously affected to each target (P>0.5). Two factors had interaction on the egg-shaped index (P<0.05). 26 week age egg quality determination: The high energy group's egg heavy obviously were higher than the low energy group (P<0.05); The factor B (CP) not obviously affects to each target (P>0.05).The quail's metabolic rate of GE in Low-energy group were significantly higher than the high-energy group, and the retention rate of calcium and total phosphorus of the high-energy group were significantly higher than the low - energy group (P <0.05). The factor B (CP) had remarkable influence on metabolic rate of GE (P<0.05), the low protein group obviously were higher than other two groups; Total phosphorus preserving rate of Medium protein group is smallest, with high protein during horizontal group difference remarkable (P<0.05).