Use of feed additives to reduce ruminal methane production and deaminase activity in steers.
Use of feed additives to reduce ruminal methane production and deaminase activity in steers.
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使用饲料添加剂减少公牛瘤胃甲烷的产生和脱氨酶活性。
DOI：
10.2527/jas1980.5061160x
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发表时间：
1980
影响因子：
3.3
通讯作者：
G. Horton
中科院分区：
文献类型：
--
作者：
G. Horton
研究了在育成公牛中分别按 1,500 毫克/千克日粮和 25 毫克/千克日粮饲喂甲烷抑制剂双甘氯和脱氨酶抑制剂 (DAI) 4,4'-二甲基二苯基氯化碘的效果。每次处理测量六头公牛的消化率以及瘤胃 VFA 和氨浓度。丁香醛、DAI 和丁香醛加 DAI 显着提高了有机物消化率。乙酸或丙酸的摩尔比例没有处理效果，但当添加两种添加剂时丁酸最高（P < .05）。所有三种治疗日粮的瘤胃氨浓度均较低（P < .05）。在一项为期 112 天的饲养场研究中，96 头公牛被分配到 8 组，每次处理 2 个栏（重复）。尽管饲料效率分别提高了 9% (P > .05) 9% 和 4%，但 Amloral 和 DAI 对采食量或日增重均没有任何影响。饲喂双氯胺加 DAI 可使采食量降低 19% (P < .05)，增重降低 8% (P > .05)，但饲料利用率提高 12% (P < .05)。
Effects of feeding the methane inhibitor, amicloral, and the deaminase inhibitor (DAI), 4,4'-dimethyldiphenyliodonium chloride, at 1,500 and 25 mg/kg of diet, respectively, were investigated in finishing steers. Digestibility and ruminal VFA and ammonia concentrations were measured in six steers per treatment. Organic matter digestibility was increased significantly by amicloral, DAI and amicloral plus DAI. There were no treatment effects on molar proportions of acetic acid or propionic acid, but butyric acid was highest (P < .05) when both additives were fed. Ruminal ammonia concentrations were lower (P < .05) with all three treatment diets. Ninety-six steers were allotted to eight groups, two pens (replicates) per treatment, in a 112-day feedlot study. Neither amicloral nor DAI had any effect on intake or daily gain, although feed efficiency was increased (P > .05) by 9 and 4%, respectively. Feeding amicloral plus DAI lowered intake by 19% (P < .05) and gains by 8% (P > .05) but increased the efficiency of feed utilization by 12% (P < .05).