Ruminant Nutrition

Effects of Diets Optimized by CPM Model on Growth, Development and Blood Biochemical Parameters of Holstein Replacement Heifers at 7 to 15 Months of Age

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  • 1. College of Animal Science and Technology, Heilongjiang Bayi Agricultural University, Daqing 163319, China;
    2. Animal Husbandry and Veterinary Research Institute, Harbin 150030, China

Received date: 2014-05-11

  Online published: 2014-11-17

Abstract

Diets of Holstein replacement heifers in scaled farm was optimized by CPM model, and the effects of optimized diets on growth, development and blood biochemical parameters were evaluated in this study. Forty Holstein replacement heifers with the same months of age (7 months of age), and similar body height and weight were randomly divided into control and test groups according to paired experimental design, and each group had 20 heifers. Heifers of control group were fed original diets of the farm, while those of test group were fed diets optimized by CPM model. The experimental period was 270 days. The results showed as follows: replacement heifers fed optimized diets had significantly higher cannon circumference at 8, 10, 11, 13 and 15 months of age (P<0.01); serum calcium content of replacement heifers fed optimized diets was significantly higher than that of heifers fed original diets (P<0.05); cost of optimized diets of 7 months of age, 8 to 9 months of age, 10 to 12 months of age, 13 to 15 months of age was decreased by 1.02, 0.78, 0.62 and 0.52 ¥/(head·d) than that of original diets, respectively. In conclusion, diets optimized by CPM model can increase cannon circumference of Holstein replacement heifers, improve growth and absorption of blood calcium, and decrease feeding cost; CPM model can be used to evaluate and optimize diets formulation of Holstein replacement heifers.

Cite this article

WANG Yang, QU Yongli, WANG Zhibo, LIU Licheng, LIU Xiang, ZHAO Xin, XING Weiming . Effects of Diets Optimized by CPM Model on Growth, Development and Blood Biochemical Parameters of Holstein Replacement Heifers at 7 to 15 Months of Age[J]. Chinese Journal of Animal Nutrition, 2014 , 26(11) : 3291 -3297 . DOI: 10.3969/j.issn.1006-267x.2014.11.015

References

[1] SNIFFEN C J,O'CONNOR J D,VAN SOEST P J,et al.A net carbohydrate and protein system for evaluating cattle diets:Ⅱ.Carbohydrate and protein availability[J].Journal of Animal Science,1992,70(11):3562-3577.

[2] 曲永利,吴健豪,刘立成,等.应用CPM模型改善日粮能氮平衡和提高奶牛生产性能的效果评价[J].动物营养学报,2010,22(2):310-317.

[3] 边四辈.利用CPM软件提高奶牛日粮蛋白利用效率[J].饲料与畜牧,2012(2):13-15.

[4] 边四辈,厉允斌.利用CPM软件配制高蛋白利用率日粮[J].中国奶牛,2012(12):29-31.

[5] 张鹏,卜登攀,张养东,等.康奈尔净碳水化合物-净蛋白质体系(CNCPS)在反刍动物上的应用研究[J].中国奶牛,2014(5):7-10.

[6] 瘳景亚.荷兰乳用青年母牛生长发育的监测[J].中国奶牛,2006(1):55-56.

[7] VAN SOEST P J,SNIFFEN C J,MERTENS D R,et al.A net protein system for cattle:the rumen submodel for nitrogen[C]//OWENS F N.Protein requirements for cattle:proceedings of an international symposium.Stillwater:Oklahoma State University,1980:265.

[8] KRISHNAMOORTHY U,SNIFFEN C J,STERN M D,et al.Evaluation of a mathematical model of rumen digestion and an in vitro simulation of rumen proteolysis to estimate the rumen-undegraded nitrogen content of feedstuffs[J].British Journal of Nutrition,1983,50(3):555-568.  

[9] AACC.Approved Methods of the American Association of Cereal Chemists[M].Saint Paul:American Association of Cereal Chemistry,1976.

[10] PELL A N.Does ration balancing affect nutrient management[C]//MANUF F.Proceedings of the Cornell nutrition conference.Ithaca:Cornell University,1992:23.

[11] 王锦荣,杨章平,臧胜兵,等.荷斯坦奶牛生长发育规律研究[J].安徽农业科学,2013,41(8):3426-3428.

[12] 程郁昕,陆强强.荷斯坦奶牛体型线性性状对305天产奶量的通径分析[J].中国草食动物,2009,29(4):34-35.

[13] 张浩,黄锡霞,热西提·阿布都热依木,等.伊犁地区荷斯坦奶牛体尺体重及外貌评分对产奶量的影响[J].新疆农业科学,2010,47(12):2447-2451.

[14] 王俊东,岳文斌,杨丽芸,等.成年母牛与后备母牛血、尿中尿素氮和肌酐的比较测定[J].中国奶牛,1991(1):53-54.

[15] 李津,何宝祥,陈雯雯,等.荷斯坦奶牛分娩前后总脂、总胆固醇和甘油三酯的检测分析[J].广西畜牧兽医,2011,27(5):265-266,318.

[16] 李新萍,陶岳,张孝恩,等.新疆石河子地区幼龄、成年奶牛血液生化指标正常参考值范围的建立[J].黑龙江畜牧兽医,2011(4):81-82.

[17] MANI O,SORENSEN M T,SEJRSEN K,et al.Differential expression and localization of lipid transporters in the bovine mammary gland during the pregnancy-lactation cycle[J].Journal of Dairy Science,2009,92(8):3744-3756.  
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