摘要
试验选用10周龄金定蛋鸭144只,研究在高温环境下(29~35℃)日粮中分别添加酵母硒(以硒量计)0(对照组)、0.15(处理Ⅰ组)、0.45(处理Ⅱ组)和0.75 mg/kg(处理Ⅲ组)对笼养育成蛋鸭(10~16周龄)生长性能和部分血液生化指标的影响。结果表明,与对照组相比,日粮中添加酵母硒能显著增加14~16周龄育成鸭的平均日采食量(P<0.05);处理Ⅰ组13~15周龄体重显著高于对照组(P<0.05),第16周龄体重显著高于其他3组(P<0.05),且与标准体重比较差异不显著(P>0.05),其他3组均极显著低于标准体重(P<0.01);4个组的料重比差异不显著(P>0.05),但以处理Ⅰ组的最低;处理Ⅰ组的谷草转氨酶(AST)活性显著低于处理Ⅱ组(P<0.05),3个处理组的乳酸脱氢酶(LDH)活性显著低于对照组(P<0.05),且处理Ⅰ组的乳酸脱氢酶活性又显著低于处理Ⅱ、Ⅲ组(P<0.05);处理Ⅰ、Ⅱ组血清总胆固醇(TCH)浓度显著高于处理Ⅲ组(P<0.05)。综合上述结果,高温环境下,在日粮中添加0.15mg/kg的硒(以酵母硒的形式)可明显改善笼养育成蛋鸭的生长性能,保护肝脏功能,提高育成鸭血清总胆固醇含量。
The study was conducted to determine the effects of different levels of selenium yeast(SeY,added as selenium content)on growth performance and some biochemical indexes in Jinding laying ducks under high temperature(2935℃).144Jinding laying ducks of rearing period(1016weeks old)were divided into4groups,control group,experimental groupsⅠ,ⅡandⅢ,supplemented with0,0.15,0.45and0.75mg/kg Se,respectively.The results showed that compared with the control group,the addition of SeY to the diets could significantly increase the average daily feed intakes(ADFI)of ducks at1416weeks old(P<0.05);The body weights of ducks in groupⅠat1315weeks old were significant higher than that in the control group(P<0.05),and the body weight at16weeks old was higher than the other three groups significantly(P<0.05),there was no significant difference between the body weight and standard body weight at16weeks old in groupⅠ(P>0.05),but the body weights of other three groups were extremely significantly lower than the standard weight(P<0.01);There was no significant difference among the four groups for feed to gain ratios(F/G),while the groupⅠwas the lowest;AST activities of groupⅠwere significantly lower than groupⅡ(P<0.05),LDH activities of groupsⅠ,ⅡandⅢwere lower than the control group significantly(P<0.05),and LDH activities of groupⅠwere lower than groupsⅡandⅢsignificantly(P<0.05).TCH concentrations of groupsⅠandⅡwere higher than groupⅢsignificantly(P<0.05).It is concluded that the addition of0.15mg/kg of Se(added as SeY)could obviously improve the growth performance of the laying ducks in reared cages,protect the function of liver,promote the TCH concentrations of duck serum.
作者
陈希萍
王晔
景栋林
李浩杰
杨文豪
CHEN Xi ping;WANG Ye;JING Dong lin;LI Hao jie;YANG Wen hao(Department of Clinical Medicine, Foshan University, Foshan 528000, China;Department of Animal Science, Foshan University, Nanhai 528231, China)
出处
《中国畜牧兽医》
CAS
北大核心
2017年第11期3208-3213,共6页
China Animal Husbandry & Veterinary Medicine
基金
广东省科技计划项目(2014A020208141
2013B020201005)
关键词
育成期蛋鸭
酵母硒
高温环境
笼养
生长性能
血液生化指标
laying ducks of rearing period
selenium yeast
high ambient temperature
cage rearing
growth performance
blood biochemical indexes
