单色光对产蛋鸡蛋品质的影响

试验采用红(660nm)、绿(560nm)、蓝(480nm)3种发光二极管(处理组)和白炽灯(400～700nm)(对照组),对180羽海兰褐蛋鸡进行人工光照,研究了单色光对蛋重、蛋形指数、蛋长径、短径和蛋壳质量的影响。试验期为19～52周,光强度均为15lx,光照时间为16h。结果表明:在整个试验期,白光组蛋重最高(61.1g),红光组最低(59.2g),二者之间差异显著(P<0.05);38～52周龄,蓝光组蛋长径显著小于其他组,而其短径显著(P<0.05)小于白光组,另外,红光组蛋短径极显著(P<0.01)小于其他组;19～37周龄,绿光组蛋形指数(1.303)显著大于其他组,而38～52周龄,红光组蛋形指数(1.343)极显著(P<0.01)大于其他组;21～45周龄,绿光组蛋壳强度(3.54kg/cm2)极显著(P<0.01)高于白光和蓝光组而绿光组蛋壳厚度(0.368mm)显著(P<0.05)大于其他组;蓝光组蛋壳颜色值(31.6)显著(P<0.05)小于白光组(33.1)。结果提示:蓝光使蛋长、径变短而红光使蛋短径变短,从而使蓝光和红光组蛋重随产蛋周龄而增长的趋势小于白光和绿光组。单色光可影响蛋壳质量,其中绿光组的蛋壳质量最好。

Effect of Monochromatic Light on Egg Quality of Laying Hens

180 Hi-Line Brown hens were exposed to red (660 nm, R), green (560 nm, G) and blue (480 nm, B) light from light emitting diode (LED) lamps and incandescent light (400~700 nm, W) for19 to 52 weeks and to study the monochromatic light effect on the egg size, eggshell index, long and short length of egg and eggshell quality in this experiment. All light sources were equalized under 15 lx light intensity for 16 h daily. The result showed: ①The egg weight in W light was the heaviest (61.1 g) and those in R light was the lightest (59.2 g) and there have significantly different(P < 0.05) with each other from 19 to 52 weeks. ②The long length of egg in B light was significantly shorter(P < 0.05) than those in other lights and its short length was significantly shorter(P < 0.05) than those in W light, the short length of egg in R light was highly significantly shorter(P < 0.01) than those in other lights from 38 to 52 weeks. ③The eggshell index in G light (1.303) was significantly larger(P < 0.05) than those in other lights from 19 to 37 weeks, and the eggshell index in R light (1.343) was highly significantly larger (P < 0.01) than those in other lights from 38 to 52 weeks. ④The eggshell strength in G light was highly significantly better (P < 0.01) than those in W and B lights and the eggshell thickness in G light was significantly better(P < 0.05) than those in other lights; the eggshell color in B light was the significantly lower(P < 0.05) than those in W light from 21 to 45 weeks respectively. Our results indicated that B light has the long and short length of egg became shorter and R light has the short length of egg became shorter with age, which result in the increasing tendency of the egg weight with age in B and R lights became slower than those in W and G lights. The monochromatic light can influence the eggshell quality and the eggshell quality was best in G light.