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首页> 美国卫生研究院文献>Asian-Australasian Journal of Animal Sciences >Characteristics of Rice Hulls Sawdust Wood Shavings and Mixture of Sawdust and Wood Shavings and Their Usefulness According to the Pen Location for Hanwoo Cattle
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Characteristics of Rice Hulls Sawdust Wood Shavings and Mixture of Sawdust and Wood Shavings and Their Usefulness According to the Pen Location for Hanwoo Cattle

机译：稻壳木屑刨花和木屑与刨花混合物的特性及其根据笔料对Hanwoo牛的用途

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In this study, two experiments were conducted to investigate the physicochemical characteristics (Exp. I) of bedding materials such as rice hulls (RH), sawdust (SD), wood shavings (WS) and sawdust+wood shavings (S+W; 1:1 in volume), and utilization of these beddings except RH (Exp. II) for rearing beef cattle. In Exp. I, the distribution of particle size (%) with 250 μm and below 250 μm was greater (p<0.05) in SD (30.4) than RH (4.4), WS (18.8) and S+W (20.1). Bulk density (kg/m3) of bedding materials was directly proportional to the percentage of 250 μm and below 250 μm particles, 178, 46, 112, and 88 for SD, WD, S+W and RH, respectively. Water absorption rate (%) after submersion in water for 24 h was higher (p<0.05) in WS (540.2) compared to SD (270.2), S+W (368.2). The S+W had an intermediate value of the absorption rate between SD and WS, but had an outstanding durability of water absorption capacity. Moisture evaporation rate (%) for 12 h was higher (p<0.05) in WS (75.4) than SD (70.5), S+W (72.2) and RH (57.8). Average ammonia emission (mg/m2/h) for 36 h was higher (p<0.05) in RH (3.15) than SD (1.70), WS (1.63), and S+W (1.73). In Exp. II, thirty six Hanwoo cows were allocated in 9 pens with one side on feed bunk side (Side A) and another side equipped with water supply (Side B) for 3 weeks with duplicated periods. Average moisture concentrations (%) of beddings were higher (p<0.05) in WS (side A, 65.7; side B, 57.9) than SD (side A, 62.5; side B, 52.2) and S+W (side A, 61.6; side B, 50.7). Regardless of types of beddings, moisture concentrations (%) of beddings within a pen were lower (p<0.05) at side B than A, implying longer period of utilization. These results suggest that using S+W would be a better choice than SD or WS alone, considering physicochemical characteristics and economics, and RH is not a suitable material as a bedding for beef cattle.
机译：在这项研究中，进行了两个实验来研究诸如稻壳（RH），木屑（SD），刨花（WS）和锯末+刨花（S + W）等被褥材料的理化特性（实验I）1体积：1），并利用除RH（实验II）以外的这些被褥来饲养肉牛。在实验中I，SD（30.4）中250μm和小于250μm的粒径分布（％）大于（p <0.05）相对于RH（4.4），WS（18.8）和S + W（20.1）。床上用品的堆积密度（kg / m 3 ）与250μm和250μm以下颗粒的百分比成正比，其中SD，WD，S + W和178、46、112和88 RH，分别。与标准差（270.2），S + W（368.2）相比，WS（540.2）浸入水中24 h后的吸水率（％）更高（p <0.05）。 S + W具有SD和WS之间的吸收率的中间值，但是具有优异的吸水能力耐久性。 WS（75.4）中12 h的水分蒸发率（％）高于SD（70.5），S + W（72.2）和RH（57.8）（p <0.05）。 RH（3.15）中36 h的平均氨排放量（mg / m 2 / h）高于SD（1.70），WS（1.63）和S + W（1.73）（p <0.05） ）。在实验中第二，将三十六头韩宇奶牛分配到9头猪舍中，一侧在饲料铺一侧（A侧），另一侧装有供水（B侧），为期3周，重复两次。 WS（A面，65.7; B面，57.9）中的床上用品的平均含水量（％）高于SD（A面，62.5; B面，52.2）和S + W（A面，61.6）（p <0.05） ；面B，50.7）。不论床上用品的类型如何，笔侧床上的床上用品中的水分含量（％）都比A侧低（p <0.05），这意味着更长的使用期限。这些结果表明，考虑到理化特性和经济性，与单独使用SD或WS相比，使用S + W是更好的选择，并且RH不是适合作为肉牛垫料的材料。

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