外源性环核苷酸对蛋鸡生产性能及蛋品质的影响

Effects of Extrinsic CNT on Production and Egg Characters of Layers

摘要:

选用4 4周龄健康海兰褐商品蛋鸡5 0 4只,随机分为7组,每组72只,每组内设3个重复,各组均在相同条件下饲养。试验结果表明:试验组鸡产蛋量均显著高于对照组,分别提高6.16、3.53、3.49、4.07、4.82和9.83个百分点,差异显著(p<0.05);饲料转化率分别提高7.72%、4.40%、4.40%、7.23%、6.27%和8.22%;与对照组相比较,第1组蛋壳厚度提高5.56%,其它各试验组均提高2.78%(p<0.0 5);破软蛋率分别降低1.33、0.81、1.15、0.96、0.98和1.00个百分点,但差异均不显著(p>0.0 5)。试验各组的平均蛋重、蛋比重、蛋形指数、哈氏单位及蛋白、蛋黄百分率与对照组相比组间差异均不显著(p>0.05)。试验结束时,1～6组每只鸡分别比对照组增收0.89、0.35、0.25、0.73、0.61和0.97元

Abstract:

week-old Hy-line layers were randomly divided into seven groups （72 layers,3 replications in each group）and fed on the same condition.The results showed that the egg production in treatment groups 1 to 6 was higher compared with the CK and increased 6.16,3.53,3.49,4.07%, 4.8 and 9.83 percent respectively,differences between treatments and the CK were significant（p＜ 0.05 ）.It also showed that the utilization ratio of ration increased 7 72%, 4 40%, 4 40%, 7 23%, 6 27 % and 8 22% （p＜0.05）.egg shell thickness increased 5.56% in group 1,and increated 2.78 % in other treatment groups,（p＜0.05）.cracked and soft egg ratio reduced 1.33,0.81,1.15, 0.96, 0.98 and 1.00 percent respectively. The results also indicated that differences of average egg weight,egg specific gravity, egg shell index,half unit,percentage of albumen and vitelline between treatment groups and the CK were not significant;average income of each layer in treatment groups increased 0.89, 0.35,0.25,0.73,0 61 and 0.97 ￥ respectively.