螺旋藻营养价值评定及其在AA肉鸡上的应用效果研究.

This experiment aimed at the nutritional value of spirulina powder and its effects on growth performance, apparent metabolic rate and meat quality of broilers. A total of 960 healthy 1-day-old AA broilers (40 g) were selected and randomly divided into 4 treatments by using a single-factor experiment design (control group, test group Ⅰ, test group Ⅱ and test group Ⅲ), with 6 repetitions for each treatment and 40 broilers for each repetition (half male and half female). The 4 treatments were fed with 0, 5, 10, 15 kg/t spirulina powder in the basal diet respectively, and the metabolizable energy and crude protein levels of each treatment group were same. The test period is 42 days, of which the pre-feeding test period is 1-14 days, and the formal test period is 15-42 days. The test results showed that the average daily gain and average daily feed intake of each test group were significantly higher than those of the control group (P<0.05), and there was no significant difference in the feed-to-meat ratio (P>0.05). The apparent metabolic rate of protein in each test group was higher than that in the control group (P<0.05), the apparent metabolic rate of crude fat in the test group Ⅱ and the test group Ⅲ was significantly higher than that in the control group (P<0.05). The apparent metabolic rate of calcium in the test group Ⅰ and Ⅱ was significantly higher than that in the control group (P<0.05). Compared with the control group, the test group showed improvements in slaughter performance and meat quality of broilers. Adding spirulina powder to the diet can significantly increase the growth performance and slaughter performance of broilers, and the optimum adding ratio is 15 kg/t. [ABSTRACT FROM AUTHOR]