摘要
选用６１周龄种禽褐壳蛋鸡２０８只，随机分为１３个处理，分别饲喂１３种不同粒度石粉构成的试验日粮（３，４％Ｃａ），测定钙表观存留率，结果表明：不同粒度石粉对蛋鸡钙表观存留率无显著影响（Ｐ＞０．０５）．另选用５４周龄种禽褐壳蛋鸡６２４只，随机分为１３个处理，分别饲喂１３种不同粒度石粉构成的试验日粮（３．４％Ｃａ）．结果表明：①不同粒度石粉对蛋鸡产蛋量、采食量、料蛋比等生产性能均无显著影响（Ｐ＞０．０５），但不同粒度石粉对破软蛋率有极显著影响（Ｐ＜０．０１），其中以添加７５％６～８目、１２．５％１０～１２目与１２．５％５０目石粉组和７５％８～１０目、１２．５％１０～１２目与１２．５％５０目两组破软蛋率最低；而小粒度石粉组即１００％５０目，２５％１０～１２目与７５％５０目两组破软蛋率最高，②不同粒度石粉对蛋鸡胫骨灰分及钙含量有极显著影响（Ｐ＜０．０１），其中以７５％６～８目、１２．５％１０～１２目与１２．５％５０目组和７５％８～１０目、１２．５％１０～１２目与１２．５％５０目石粉两组胫骨灰分及胫骨钙含量表现出显著优势（Ｐ＜０．０１），而１００％５０目及５０％１０～１２目与５０％５０目两组，胫骨灰分及钙含量最低。
wk-old brown egg layers were fed 13 kinds of various particle size of lime stone. The results indicated the diet had no effect on apparent calcium reserved ratio (p>0.05). 624 54-wk-old brown layers were fed 13 kinds of various particle size of limestone. The results in- dicated the diet had no effect on egg production and feed consumption (p>0.05). The diet had effect on broken and soft egg ratio and tibia ash and calcium content of tibia ash.
出处
《北京农学院学报》
1998年第3期43-50,共8页
Journal of Beijing University of Agriculture
关键词
蛋鸡
石粉
生产性能
钙表观存留率
胫骨钙含量
Brown egg layers, limestone, apparent calcium reserved ratio, production perfor mence, tibia ash, calcium content of tibia ash
