摘要
本试验旨在研究5～11周龄金定蛋鸭实用日粮中氯化钠的添加量。试验采用玉米-豆粕型基础日粮(含钠0.037%,氯0.047%,钾0.710%),分别添加0、0.16%、0.20%、0.24%、0.28%、0.32%、0.48%和0.96%的氯化钠组成8种试验日粮。试验选用960只5周龄健康金定蛋鸭,按体重均匀分成8个组,每个组设10个重复,每个重复12只鸭。试验期为7周。结果显示,氯化钠添加水平对生长蛋鸭日增重、采食量及料重比影响显著(P<0.05);蛋鸭血清CO2浓度和pH各组间差异不显著(P>0.05),但随着氯化钠添加量的增加而呈现下降的趋势。血清中碳酸氢根离子浓度随着氯化钠添加量的增加而下降,对照组的阴离子间隙显著低于0.20%～0.96%组(P<0.05);渗透压随着氯化钠添加量的增加而升高,对照组与0.96%组差异显著(P<0.05);钠和氯对生长蛋鸭血清甘油三酯和总胆固醇的影响差异不显著(P>0.05),对血清尿素氮和葡萄糖的浓度影响显著(P<0.05)。因此,在玉米-豆粕型日粮中添加0.24%氯化钠,使日粮钠和氯的含量分别为0.131%和0.193%,可满足5～11周龄金定蛋鸭的生长和生理需要。
This study was designed to evaluate the requirements of sodium and chlorine for Jinding laying ducks aged from 5 to 11 weeks. Nine hundred and sixty Jinding ducks were chosen and randomly divided into 8 groups according to the body weight with 10 replicates of 12 ducks per replicate which were fed diets with sodium chloride of 0, 0.16%, 0.20%, 0.24%, 0.28%, 0.32%, 0.48% and 0.96% in the basal diet （contained 0. 037% sodium, 0. 047% chlorine and 0. 710% kalium）, respectively. The trial lasted for 7 weeks. The results showed that sodium chloride significantly affected average daily weight gain （ADG）, average daily feed intake （ADFI） and the ratio of feed to gain （F/G） of growth laying ducks （P〈0.05）. The contents of CO2 and pH in serum were decreased as the supplemental level of sodium chloride increased （P〉0.05）. The content of bicarbonate ion was decreased as the supplemental level of sodium chloride increased. The anion gap was lower when supplemented with 0 sodium chloride than that supplemented with 0.20% -0.96% sodium chloride （P〈0.05）. The osmotic pressure was increased as the level of sodium chloride increased and there were significantly differences between 0 and 0.96% sodium chloride adding groups. The sodium and chlorine had no significant effect on the content of triglyceride and total cholesterol （P〉0.05）, but significantly affected the contents of urea nitrogen and glucose in serum （P〈0.05）. It was concluded that the diet supplemented with 0.24% sodium chloride which contained 0. 131% sodium and 0. 193% chlorine could meet the requirement of 5 to 11 weeks Jinding laying ducks in production.
出处
《动物营养学报》
CAS
CSCD
北大核心
2010年第2期460-465,共6页
CHINESE JOURNAL OF ANIMAL NUTRITION
基金
国家自然科学基金资助项目(30571345)
关键词
氯化钠
生长蛋鸭
需要量
Sodium chloride
Growth laying ducks
Requirement
