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作 者:郝正里[1] 王小阳[1] 方雨生 陶肖君 魏时来[1]
机构地区:[1]甘肃农业大学畜牧系
出 处:《中国动物营养学报》1993年第1期15-23,共9页
摘 要:用22周龄伊莎褐母鸡进行了98天试验,研究四种供钙方式(Ⅰ—全石灰石粒,Ⅱ—1/3石灰石粉加2/3石灰石粒,Ⅲ—全石灰石粉,Ⅳ—全石灰石粉差别供钙,上午低钙,下午高钙)的效果。试验结果表明,四种处理间产蛋率、破蛋率、软蛋率和蛋壳品质指标均无显著差异(P>0.05);处理间开产前(141日蛉)和开产后(180日龄)的血清钙与血清碱性磷酸酶活性也无显著差异(P>0.05)。两期代射试验结果表明,Ⅳ组食入的钙较有效地用于形成蛋壳。Effects of four treatments in calcium supply were studied with ISA brown hens from the age of 22 weeks for 98 days. The treatments were whole lime stone particle, lime stone meal (1/3)+lime stone particle (2/3), lime stone meal, and lime stone meal in varied calcium supply (i. e. high Ca supply am. and Low Ca supply pm. ). Resuits show that the rates of laying, eggs broken and soft shell eggs, and the indexes of egg shell quality differenced not significantly between treatments(P>0.05) The differences of serum calcium and activity of serum SAKP were not significant (P>0.05). between the treatments of pre—and post laying(i, e. the age of 141 days and 180 days). The results of two metabolic tests showed that the calcium ingested in group Ⅳ was utilised to form egg shell more effectively.
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