Effect of forage-concentrate ratio in complete feeds fed ad libitum on feed intake prepartum and the occurrence of abomasal displacement in dairy cows.
Effect of forage-concentrate ratio in complete feeds fed ad libitum on feed intake prepartum and the occurrence of abomasal displacement in dairy cows.
复制标题
随意饲喂全价饲料中的草精料比对奶牛产前采食量和皱胃移位发生的影响。
DOI：
10.3168/jds.s0022-0302(72)85573-5
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发表时间：
1972
影响因子：
3.5
通讯作者：
J. S. Baker
中科院分区：
文献类型：
--
作者：
C. Coppock;C. Noller;S. A. Wolfe;C. J. Callahan;J. S. Baker
40头荷斯坦奶牛在分娩前28天被分配到四种完全饲料组：a）75：25; B）60：40; c）45：55; d）30：70，以研究日粮能量水平对自由采食能量消耗的影响。在产后25天内，四个日粮组分别有0、2、4和4例皱胃左移位。产犊前28天的平均每日干物质摄入量差异不显著（P > 0.05）。产犊前28天的平均消化能消耗量分别为国家研究理事会维持需求量的155%、138%、159%和173%。
Abstract Forty Holstein cows were assigned to four complete feeds of: a) 75:25; b) 60:40; c) 45:55; and d) 30:70 forage to concentrate ratios, 28 days before parturition, to examine the effect of ration energy level on the ad libitum consumption of energy in relation to requirements. During 25 days following parturition, 0, 2, 4, and 4 cases of left displacement of the abomasum occurred in the four ration groups, respectively. The mean daily dry matter intake 28 days prepartum did not differ significantly (P Digestible energy consumed during the 28 days before calving averaged 155, 138, 159, and 173% of National Research Council's maintenance requirements for the four treatment groups, respectively.