| 摘要: |
| 试验选用30周龄海兰商品代产蛋鸡288只,采用单因子对比试验,在基础日粮中分别添加15 g/kg洋县膨润土+2 g/kg微量元素添加剂(Ⅰ组)、15 g/kg洋县膨润土(Ⅱ组)、25 g/kg洋县膨润土(Ⅲ组)和2g/kg微量元素添加剂(对照组)饲喂产蛋鸡,正试期49 d,以探讨洋县膨润土对蛋鸡生产性能与安全性的影响。试验结果表明,试验组比对照组产蛋率提高1.15%～2.60%(P>0.05); 、 组平均蛋重和料蛋比分别较对照组高1.3%(P<0.05)和4%;血液中总蛋白、白蛋白、球蛋白、P以及ALT、ALP含量,各组间差异不显著(P>0.05),Ca含量试验组明显高于对照组;试验组与对照组鸡蛋中Pb、Cd、As、F含量均低于国家食品卫生标准。综合比较认为,基础日粮中添加15 g/kg膨润土较其他各组成本低、产出高,且无毒副作用和潜在的不良影响,安全可行。 |
| 关键词: 洋县膨润土 产蛋性能 重金属 生化指标 |
| DOI： |
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| 基金项目:杨凌农业高新技术产业示范区科研专项资助项目(1999KG11) |
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| The feeding experiment of Yangxian bentonite to layers |
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| Abstract: |
| Taking single factor comparison experiment,228 Hy-line Layers,at the age of 30 weeks,were divided into 4 groups to investigate the influence of Bentonite from Yangxian,Shaanxi on laying performance and it's safety.The layers fed on basic dietary,Per kilogram dietary added respectively 15 g Bentonite and 2g trace element (trial groupⅠ),15 g Bentonite (trial group Ⅱ) 25 g bentonite (trial group Ⅲ) and 2 g trace element (control).The formal trial period was 49 days.The results showed that the laying rate of trial was 1.15%-2.60% higher than control (P>0.05);egg weight of group Ⅰ and Ⅱ was averagely increased by 1.3% over control (P<0.05) and the egg feed ratio increased by 4%.There was no significant difference between the trial and the control in TP,ALB,GLO,P,ALT and ALP of serum (P>0.05);The concentration of Ca in trial groups was significantly higher than that in control.Both the control and the trial,the heavy metal contents in eggs were below the national food standard.Compared with others,the dietary adding 15 g bentonite per kilogram was cheap,efficient and safe. |
| Key words: bentonite from Yangxian performance heavy metal biochemical inde |
