摘要
试验旨在比较笼养和平养方式对不同品种蛋鸭蛋品质的影响,以期为评价不同饲养方式下的鸭蛋品质提供参考依据。随机选取40周龄笼养和平养的金定鸭(青壳蛋)和山麻鸭(白壳蛋)鸭蛋各30枚于产后24h内进行蛋品质测定。结果表明,同一品种笼养蛋鸭蛋重极显著大于平养蛋鸭蛋重(P<0.01),蛋重与蛋壳重、蛋白重和蛋黄重之间均存在极显著正相关(P<0.01),但不同类型鸭蛋的蛋黄重之间差异不显著(P>0.05)。青壳蛋的蛋壳强度显著高于白壳蛋(P<0.05),笼养青壳蛋的蛋壳强度亦高于平养青壳蛋(P<0.05)。蛋的比重与蛋壳厚度呈极显著正相关(0.503,P<0.01),与蛋壳强度的相关系数亦达到0.536(P<0.01)。4种类型鸭蛋的哈氏单位均达到72以上。虽然蛋白重与蛋黄重之间呈极显著正相关(P<0.01),但蛋白重与蛋黄比率之间却呈极显著的负相关(P<0.01)。蛋的比重与蛋黄重和蛋黄比率之间亦存在显著负相关(P<0.05)。以上结果表明,就蛋品质而言,蛋鸭养殖以采用笼养模式、选择青壳蛋鸭品种为宜。
The purpose of this test was to evaluate the egg quality from two breeds of ducks reared in cages and on floor.30 eggs were chosen from each type of eggs,which were from Jinding（green shell）and Shan Partridge ducks（white shell）at 40weeks-old reared in cages and on floor for egg quality evaluation.The results showed that the egg weight of caged duck was extremely significantly larger than the floor duck（P〈0.01）in the same breed,there were very significant positive correlations between the egg weight and eggshell weight,egg-white weight and egg yolk weight（P〈0.01）,but no significant difference among the egg yolk weights of different types of ducks（P〉0.05）.The shell strength of green egg was obviously higher than that of white shell eggs（P〈0.05）,and the shell strength of green egg from caged ducks was higher than that of the green egg ducks on floor.The correlation coefficients of the egg specific gravity and eggshell thickness,the specific gravity and eggshell strength were 0.503（P〈0.01）and 0.536（P〈0.01）respectively.Haugh units of four types of ducks all reached 72 or more.Although there was significant positive correlation between egg-white weight and egg yolk weight（P〈0.01）,significant negative correlation was existed between egg-white weight and egg yolk ratio（P〈0.01）.There were significant negative correlations between egg specific gravity and egg yolk weight（P〈0.05）and egg yolk ratio（P〈0.05）.In conclusion,the mode of cage feeding and the breed with green shell were appropriate choices in laying-egg duck production for high egg quality.
出处
《中国畜牧兽医》
CAS
北大核心
2016年第9期2339-2343,共5页
China Animal Husbandry & Veterinary Medicine
基金
广东省省级科技计划项目(2014A020208141)
科技部农业科技成果转化资金(2013GB2E000355)
广东省科技攻关项目(2013B020201005)
关键词
蛋鸭
品种
饲养方式
蛋品质
egg-laying duck
breed
feeding pattern
egg quality
