长期饲喂亚麻籽对蛋鸡生产性能及消化代谢的影响

为研究长期饲喂亚麻籽对蛋鸡生产性能和表观消化代谢的影响,试验选用48只体重相近的55周龄健康海兰褐蛋鸡,随机分成4组,每组12只,即试验1、2、3和4组分别在基础日粮中添加0、6%、12%和18%亚麻籽,饲喂10周。结果表明,试验2、3组对蛋鸡增重无影响(P>0.05),试验4组蛋鸡体重显著下降(P<0.05);各试验组排泄物的水分含量无显著变化(P>0.05);试验2组可提高产蛋性能,试验3组可改善部分产蛋性能,但试验4组能降低产蛋性能。对于营养物质的消化代谢,试验2组不影响日粮表观代谢能和营养物质表观代谢率,试验3组显著降低能量表观代谢率和磷表观代谢率(P<0.05),试验4组降低能量及多项营养物质表观代谢率。提示,日粮中添加6%亚麻籽可用于长期饲喂蛋鸡。

Long-term Effect of Feeding Flaxseed on the Production Performance and Metabolism of Laying Hens

To investigate the long-term effect of feeding flaxseed on the production performance and metabolism of laying hens.48 healthy, approximate weight, fifty-five weeks Hyline Brown hens were divided into four groups, corresponding to treatment 1, 2, 3 and 4 groups were supplemented with 0, 6%, 12% and 18% flaxseed for 10 weeks in the diets respectively. The test results showed that treatment 2 and 3 groups had no effect on weight gain (P>0.05), and treatment 4 group significantly decreased body weight (P<0.05). The excreta moisture content had no significant change with supplement of flaxseed (P>0.05). The treatment 2 and 3 groups could improve laying performance, but treatment 4 group could reduce laying performance. The treatment 2 group did not affect the apparent metabolizable energy and nutrient apparent metabolizable rate of diet, treatment 3 group could reduce the apparent metabolizable energy rate and P apparent metabolizable rate of diet (P<0.05), and treatment 4 group could reduce apparent metabolizable energy and apparent metabolic rate of nutrients. Therefore, supplemented with 6% flaxseed in diet could be used for long-term feeding of laying hens.