四大玉米杂优类群自交系的全株饲用营养价值分析

对我国现行的四大玉米杂优类群中25个自交系的全株玉米营养价值进行了初步测定,结果表明:在四大玉米杂优类群中,瑞德群的粗蛋白(CP)含量最低,粗脂肪(CF)含量最高,中性洗涤纤维(NDF)和酸性洗涤纤维(ADF)含量居中;兰卡斯特群的ADF含量比其它类群低;塘四平头类群的CF含量最低,NDF和ADF含量却最高;旅大红骨群的NDF含量最低,CP含量最高。单株鲜重、单株干重、粗蛋白、粗脂肪和中性洗涤纤维含量在四大类群之间无显著性差异。旅大红骨群与塘四平头群之间的NDF含量有显著差异;ADF含量在兰卡斯特群和瑞德群、塘四平头群和旅大红骨群之间存在着显著性差异。

Analysis on the Nutritive Values of Whole Plant in Inbred Lines Among Four Maize Heterosis Populations

To evaluate the whole plant nutrition value,25 maize inbred lines among four heterosis populations were analyzed.The main results are as follows: the content of crude protein(CP) in Reid Population is least among these populations,but its content of crude fat(CF) is most among them,that of neutral detergent fibre(NDF) and acid detergent fibre(ADF) is middle;The content of ADF in Lancaster Population is lower than that of the other populations;The content of CF in Tangsipingtou Population is least among four populations,but its content of NDF and ADF is highest;The content of NDF in Lvdahonggu Population is lower than that of the other populations,but the content of CP is highest among them.There are no significantly differences on fresh weight per plant,dry weight per plant,CP,CF and NDF among four populations.There are significantly differences on the content of NDF between Lvdahonggu Population and Tangsipingtou Population;There are significantly differences on the content of ADF between Lancaster Population and Reid Population,Tangsipingtou Population and Lvdahonggu Population.