L-茶氨酸对球虫攻毒AA肉鸡血清溶菌酶活性和粪便中球虫卵囊数的影响

Effects of L-theanine on Serum Lysozyme Activity and Fecal Coccidial Oocyst in Arbor Acres Broiler Chickens Challenged with Eimeria Acervulina

本试验旨在探讨日粮中添加L-茶氨酸对球虫攻毒AA肉鸡血清溶菌酶活性和粪便球虫卵囊数的影响。试验采用2×2因子试验设计,包含2种攻毒处理和2个L-茶氨酸水平(0、800 mg/kg)。240只1日龄雄性AA肉鸡被随机分为4组,每组6个重复,每个重复10只。肉鸡21日龄,处理组灌喂孢子化堆型艾美耳球虫卵囊,对照组灌喂生理盐水,在试验第21、28天采血和收粪,测定血清溶菌酶含量和排泄物卵囊数。结果表明:L-茶氨酸能够显著提高球虫攻毒肉鸡血清溶菌酶含量(P<0.01),显著降低了球虫攻毒肉鸡排泄物中卵囊数(P<0.05)。结果表明,L-茶氨酸对球虫攻毒AA肉鸡的免疫机能具有一定改善作用。

To study the effects of L-theanine on serum lysozyme activity and fecal coccidial oocyst in arbor acres broiler chickens with eimeria acervulina challenge. The design of this experiment was a 2×2 factorial arrangement with two dietary concentrations of L-theanine （0, 800 mg/kg） with or without Eimeria Acervulina challenge. A total of 240 one-day-old male arbor acres broiler chickens were randomly assigned into 4 groups with 6 replicates and 10 chickens per replicates. At the age of 21 d, the isodose sporulate E. acervulina oocysts and saline were respectively garaged to chickens in control and experimental groups. On t 21 and 28, the blood and feces were collected respectively to detect the content of serum lysozyme and fecal coccidial oocyst. The results showed that L-theanine could significantly increase the content of serum lysozyme （P〈0.01） and decrease fecal coccidial oocyst （P〈0.05） after eimeria acervulina challenge. The result indicated that L-theanine had a benefit effect on immune function of arbor acres broiler chickens infected with Eimeria A cervulina.