不同鸡种及不同产蛋周龄鸡蛋营养成分比较分析

Comparison of content of nutrition by different layer breed eggs at different weeks of age

中文关键词:  鸡种  鸡蛋  营养成分

英文关键词:layer breed  egg  nutrition

中文摘要:

      目的 比较不同鸡种及不同产蛋阶段所产鸡蛋营养成分的差异。方法 在相同条件下饲养海兰褐鸡、苏禽青壳鸡、仿土蛋鸡, 比较产蛋前期(21周)、中期(43周)、后期(67周)所产鸡蛋的营养成分及矿物元素含量。结果 不同鸡种所产鸡蛋的粗蛋白含量差异不显著(P＞0.05); 海兰褐鸡蛋的干物质、粗脂肪、胆固醇、磷脂、磷、铁、硒等含量均显著小于仿土蛋鸡蛋和苏禽青壳蛋(P＜0.05), 仿土蛋鸡蛋和苏禽青壳蛋二者间差异不显著(P＞0.05)。产蛋前期鸡蛋的干物质含量显著低于产蛋中、后期(P＜0.05); 仿土蛋鸡和苏禽青壳产蛋前期鸡蛋的粗脂肪含量显著低于产蛋中、后期(P＜0.05); 产蛋前期鸡蛋的胆固醇和磷脂含量显著高于产蛋后期(P＜0.05), 产蛋后期显著高于产蛋中期(P＜0.05), 不同产蛋阶段鸡蛋的粗蛋白、磷、铁、铜和硒含量差异匀不显著(P＞0.05); 不同鸡种在不同产蛋阶段所产鸡蛋的钙、镁、锌、锰等含量存在一定差异。结论 青壳蛋和仿土鸡蛋营养成分要优于海兰褐鸡蛋, 初产蛋除了磷脂含量较高, 其他营养成分基本相同。

英文摘要:

      Objective To compare the differences of nutritive compositions of eggs produced in different layer breed chickens and different laying phases. Methods Under the same conditions, the Hy-line brown, Suqin green and Fangtu were fed, the nutrient compositions and mineral elements content of laying early phase (21 weeks), middle phase (43 weeks) and later phase (67 weeks) were compared. Results There was no significant difference in the amount of crude protein produced by different layer breed eggs (P＞0.05). Dry material, crude fat, cholesterol, lecithin, phosphorus, iron, and selenium of Hy-line brown egg were significantly lower than those of Fangtu and Suqin green eggs (P＜0.05), and there was no significant difference between Fangtu and Suqin green eggs (P＞0.05). The content of dry material in early laying phase was significantly lower than that in middle and later laying phase (P＜0.05), crude fat of Fangtu and Suqin green egg in early laying phase was significantly lower than that in middle and later laying phase (P＜0.05), cholesterol and lecithin in early laying phase were significantly higher than those in later laying phase (P＜0.05), and those in later laying phase were significantly higher than those in middle phase (P＜0.05). The contents of crude protein, phosphorus, iron, copper, and selenium had no significantly difference among three laying phases (P＞0.05), and there were some differences in the contents of calcium, magnesium, zinc and manganese in eggs produced by different chicken breeds. Conclusion Nutritive compositions of Green eggs and Fangtu eggs are better than those of Hy-line brown eggs. In addition to the higher phospholipid content, the early production of eggs are basically the same as others.