动物营养学报2011，Vol.23Issue(10)：1684-1696,13.DOI:10.3969/j.issn.1006-267x.2011.10.007
磷来源与水平对蛋鸡生产性能和蛋壳质量的影响
Effects of Phosphorus Source and Level on Performance and Eggshell Quality of Laying Hens
摘要
Abstract
The experiment was conducted to investigate the effects of different phosphorus levels from mono-dicalcium phosphate (MDCP) or dicakium phosphate (DCP) on performance and eggshell quality of laying hens. A completely randomized design involving a 2 x 7 factorial arrangement of treatments was used in this study. Two phosphorus sources were MDCP and DCP, and seven phosphorus supplemental levels were 0, 0.05% , 0.10% , 0.15% , 0.20% , 0.25% and 0. 30% , respectively. A total of 1 170 commercial Lohm-ann pink-shell laying hens aged 25 weeks were randomly assigned to 13 treatments with 6 replicates each and 15 hens in each replicate. The corn-soybean meal based diet contained 0.12% non-phytate phosphate (NPP) and calcium level of all diets was 3.5%. The experiment lasted for 24 weeks. The results showed as follows; there were no significant interactions between phosphorus source and phosphorus level in the laying performance and eggshell quality (P >0.05). During the whole experimental period, hens fed the basal diet had the lowest average daily egg production, average daily egg mass, average daily feed intake (ADFI) and average egg weight, and the highest feed to egg ratio, cracked or broken, and malformation egg percentage (P < 0.05). Phosphorus source and level had no significant effects on eggshell thickness (P > 0.05). When hens were fed the diets with NPP supplemental level between 0.05% and 0. 30% , there were no significant differences in average daily egg production, feed to egg ratio (except for 1 to 4 weeks) , mortality, cracked or broken, soft, and malformation egg percentage (P>0.05). When hens were fed the diets with NPP supplemental level between 0. 10% and 0. 30% , there were no significant differences in average daily egg mass ( P > 0.05). With dietary NPP level increasing, average egg weight and ADFI increased firstly, and then decreased. The results indicate that MDCP can completely replace DCP in the diet of laying hens. The suitable NPP level in the corn-soybean meal based diet is 0.22% , and MDCP supplemental level is 0.48% for laying hens aged from 25 to 49 weeks.关键词
MDCP/DCP/磷水平/生产性能/蛋壳质量Key words
MDCP/ DCP/ phosphorus level/ performance/ eggshell quality分类
农业科技引用本文复制引用
谭占坤,白世平,张克英,丁雪梅,曾秋风,彭西..磷来源与水平对蛋鸡生产性能和蛋壳质量的影响[J].动物营养学报,2011,23(10):1684-1696,13.基金项目
四川省教育厅重大培育项目 （）
中国磷营养中心(川恒化工)和四川农业大学双支团队资助 （川恒化工）
