TMR日粮不同颗粒大小对奶牛采食行为的影响

被引：12

作者：

栗文钰 ^{[1
,2
]}

孙龙生 ^{[1
,2
]}

李智春 ^{[1
,2
]}

赵国琦 ^{[1
,2
]}

机构：

[1] 扬州大学动物科学与技术学院

[2] 江苏省扬州市扬州大学动物科学与技术学院反刍动物营养组(室)

来源：

饲料工业 | 2009年 / 29卷 / 01期

关键词：

颗粒大小; 物理有效中性洗涤纤维(peNDF); 咀嚼; 奶牛;

D O I：

暂无

中图分类号：

S823.5 [];

学科分类号：

090502 ;

摘要：

试验选择6头体况良好,产奶天数(DIM)接近的荷斯坦奶牛,采用3×3重复拉丁方设计,通过给奶牛饲喂由不同颗粒片段大小(长切割L,短切割S,中等水平M)的玉米青贮组成的TMR日粮来研究其对奶牛采食、反刍行为等的影响。结果表明:降低日粮颗粒片段大小,奶牛的干物质采食量(DMI)、中性洗涤纤维采食量(NDFI)及酸性洗涤纤维采食量(ADFI)均下降,但各处理组间差异不显著(P>0.05);物理有效中性洗涤纤维采食量(peNDFI)也下降,L组与S组间差异显著(P<0.05);降低日粮颗粒大小,奶牛的采食时间、反刍时间及总咀嚼时间下降,L组与S组间奶牛的采食和反刍时间差异显著(P<0.05);奶牛的总咀嚼时间L组与M组、M组与S组间差异显著(P<0.05),而L组和S组间差异极显著(P<0.01)。试验表明,改变日粮颗粒大小对奶牛的DMI等影响不显著,对奶牛的咀嚼活动则有显著的影响。

引用

页码：15 / 18

页数：4

共 15 条

[1]

饲料分析及饲料质量检测技术[M]. 北京农业大学出版社 , 杨胜主编, 1993

[2]

Altering Physically Effective Fiber Intake Through Forage Proportion and Particle Length: Digestion and Milk Production 1[J] . W.Z. Yang,K.A. Beauchemin.Journal of Dairy Science . 2007 (7)

[3]

Altering Physically Effective Fiber Intake Through Forage Proportion and Particle Length: Chewing and Ruminal pH[J] . W.Z. Yang,K.A. Beauchemin.Journal of Dairy Science . 2007 (6)

[4] Effects of chop length of alfalfa and corn silage on milk production and rumen fermentation of dairy cows [J].

Bhandari, S. K. ;

Ominski, K. H. ;

Wittenberg, K. M. ;

Plaizier, J. C. .

JOURNAL OF DAIRY SCIENCE, 2007, 90 (05) :2355-2366

[5]

Increasing the Physically Effective Fiber Content of Dairy Cow Diets May Lower Efficiency of Feed Use 1[J] . W.Z. Yang,K.A. Beauchemin.Journal of Dairy Science . 2006 (7)

[6]

Effects of Physically Effective Fiber on Intake, Chewing Activity, and Ruminal Acidosis for Dairy Cows Fed Diets Based on Corn Silage *[J] . K.A. Beauchemin,W.Z. Yang.Journal of Dairy Science . 2005 (6)

[7]

The Effect of Corn Silage Particle Size on Eating Behavior, Chewing Activities, and Rumen Fermentation in Lactating Dairy Cows[J] . P.J. Kononoff,A.J. Heinrichs,H.A. Lehman.Journal of Dairy Science . 2003 (10)

[8] The effect of corn silage particle size and cottonseed hulls on cows in early lactation [J].

Kononoff, PJ ;

Heinrichs, AJ .

JOURNAL OF DAIRY SCIENCE, 2003, 86 (07) :2438-2451

[9]

Effects of Forage Particle Size, Forage Source, and Grain Fermentability on Performance and Ruminal pH in Midlactation Cows[J] . K.M. Krause,D.K. Combs.Journal of Dairy Science . 2003 (4)

[10]

Effects of Particle Size of Alfalfa-Based Dairy Cow Diets on Chewing Activity, Ruminal Fermentation, and Milk Production 1[J] . K.A. Beauchemin,W.Z. Yang,L.M. Rode.Journal of Dairy Science . 2003 (2)

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