Abstract

The current study was conducted to investigate effects of copper (sulfate, acetate and nano) in ovo injection at 10 days of the embryogenesis period on body weight (BW), immunity, biochemical parameters and carcass traits of broiler chicks at 35 days of age. A total number of 462 fertile eggs were used in seven groups, each group containing 66 eggs in three replicates. The experimental design was as follows: the group 1 as a control, while groups 2, 3 and 4 injected with 8 μg/egg of Cu sulfate, Cu acetate and nano Cu, respectively, and groups 5, 6 and 7 injected with 16 μg/egg of Cu sulfate, Cu acetate and nano Cu, respectively. Results stated that BW was increased in Cu-injected groups, except groups of Cu acetate, but plasma constituents, carcass and relative weight of organs did not affect. Cu level (8 μg/egg) had better results than Cu level (16 μg/egg). No differences between among groups in relative weights of spleen and bursa and immune response. In conclusion, it is recommended that in ovo injection of different sources of Cu can augment the BW and did not harmfully affect immunity, carcass traits and biochemical parameters of broiler chicks.

摘要

目前的研究是为了调查铜（硫酸盐、醋酸盐和纳米）在蛋中的作用胚胎发生期第 10 天注射对 35 日龄肉鸡体重 (BW)、免疫力、生化参数和胴体性状的影响。7组共使用462枚受精卵，每组66枚卵，重复3次。实验设计如下：第1组作为对照，第2、3、4组分别注射8μg/蛋的硫酸铜、醋酸铜和纳米铜，第5、6、7组注射16μg/蛋/分别为硫酸铜、醋酸铜和纳米铜的蛋。结果表明，除醋酸铜组外，铜注射组体重增加，但血浆成分、胴体和器官的相对重量不受影响。铜含量（8 微克/蛋）比铜含量（16 微克/蛋）效果更好。脾脏和法氏囊的相对重量以及免疫反应在各组之间没有差异。总之，建议蛋内注射不同来源的铜可以增加体重，并且不会对肉鸡的免疫力、胴体性状和生化参数产生有害影响。