动物营养学报2015，Vol.27Issue(9)：2714-2723,10.DOI:10.3969/j.issn.1006-267x.2015.09.009
CPM模型优化饲粮对16~24月龄后备荷斯坦母牛生长发育和血清生化指标的影响
Effects of Diets Optimized by CPM Model on Growth Development and Serum Biochemical Parameters of Holstein Replacement Heifers at 16 to 24 Months of Age
摘要
Abstract
The objective of this study was conducted to determine the effects of diets optimized by CPM model on growth development and serum biochemical parameters of replacement heifers at 16 to 24 months of age. Forty 16-month-old Holstein replacement heifers with similar body weight and body height were selected and randomly divided into control and test groups, and each group included 20 Holstein replacement heifers. The heifers of control group were fed the present diet in farm, and those of test group were fed diets optimized by CPM model. The experimental period was 270 d during 16 to 24 months of age of Holstein replacement heifers. Results: the replacement heifers fed optimized diets significantly increased the cannon circumference at 17 month of age ( P<0.05) . The replacement heifers of test group had higher cannon circumference index at 17, 18, 20, 21, 23 and 24 months of age ( P<0.05) , and had the same result on heart girth index of 17 and 18 months of age (P<0.05). Serum calcium content of test group was significantly higher than that of control group at 17, 23 and 24 months of age ( P<0.05) , and serum phosphorus content of test group was significant-ly higher than that of control group at 16 months of age ( P<0.01) . Compared with the cost of control group, the cost of the optimized diets was decreased by 1.03 and 0.32 ￥ /d at 16 to 22 and 23 to 24 months of age, respectively. In conclusion, the diets optimized by CPM model can improve the growth and development of Holstein replacement heifers and decrease feeding cost. Therefore, CPM model can be used to evaluate and op-timize diets formulation of Holstein replacement heifers at 16 to 24 months of age.关键词
16~24月龄后备母牛/CPM模型/生长发育/血清生化指标Key words
16 to 24-month-old replacement heifers/CPM model/growth and development/serum biochemi-cal parameters分类
农业科技引用本文复制引用
韩云胜,曲永利,袁雪,王志博,王洋,刘立成,李伟,殷溪瀚..CPM模型优化饲粮对16~24月龄后备荷斯坦母牛生长发育和血清生化指标的影响[J].动物营养学报,2015,27(9):2714-2723,10.基金项目
奶牛营养调控与粗饲料高效利用关键技术研究(2012BAD12B02) （2012BAD12B02）
国家科技部支撑项目,东北农区奶牛规模化健康养殖生产技术集成和产业化示范(2012BAD12B05-01) （2012BAD12B05-01）
黑龙江省农垦总局项目,黑龙江垦区规模化奶牛场增产关键技术研究与示范(HNK125B-11-02) （HNK125B-11-02）
