检索规则说明:AND代表“并且”;OR代表“或者”;NOT代表“不包含”;(注意必须大写,运算符两边需空一格)
检 索 范 例 :范例一: (K=图书馆学 OR K=情报学) AND A=范并思 范例二:J=计算机应用与软件 AND (U=C++ OR U=Basic) NOT M=Visual
作 者:李国喜[1] 康相涛[1] 田亚东[1] 秦召[1] 孙桂荣[1] 韩瑞丽[1] 黄艳群[1] 竹学军 李效法
机构地区:[1]河南农业大学牧医工程学院,郑州450002 [2]河南固始三高集团,河南固始465200
出 处:《中国农学通报》2006年第4期4-7,共4页Chinese Agricultural Science Bulletin
基 金:国家"863"计划资助项目"优质特色固始鸡;三黄鸡新品种选育技术研究"(2002AA242021);河南省重大科技攻关项目"固始鸡优质高效配套系选育及绿色产品产业化开发"(0222010900)。
摘 要:对固始鸡种蛋孵化期间蛋壳中钙、磷含量进行了测定,结果表明:孵化期间蛋壳内钙、磷含量变化呈现不同规律。0~6胚龄,蛋壳中钙、磷变化均不明显;从12胚龄开始,钙含量突然降低,并以递增趋势持续至21胚龄;磷含量明显变化是从9胚龄开始,12胚龄达最大,随后逐渐降低,18~21胚龄保持不变,所以6~18胚龄是蛋壳中磷的主要转移期;同时,各胚龄阶段蛋壳中钙、磷比例也呈规律性变化。The Calcium and Phosphorus contents of Gushi chicks eggshells were determined during incubation period,the results showed:the change of Calcium and Phosphoeus contents in the shell appeared different regularity conditions.During 0-6day the content of the two elements had not obvious change.Since the 12th day,the content of Calcium decreased suddenly and lasted to the 21st day by gradual increasing tendency; While the content of Phosphorus had obvious changed from the 9th day, and came to the maximum at 12 day-age,and decreased gradually following, and hold the line during 18-21 day-age;Meanwhile,theproportions
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在链接到云南高校图书馆文献保障联盟下载...
云南高校图书馆联盟文献共享服务平台 版权所有©
您的IP:216.73.216.15