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首页> 外文期刊>International Journal of Poultry Sciences >Heat Treatment of Turkey Litter for Reuse as Bedding
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Heat Treatment of Turkey Litter for Reuse as Bedding

机译：土耳其凋落物的热处理，可作为垫料重复使用

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Local and national laws regulating poultry litter (PL) land application may require that PL be applied based on crop needs and PL nutrient content such as N and P. In addition, some may require monitoring of soil metals such as Cu and Zn. Even with efforts to decrease fecal nutrient excretion, there is also a need to extend the useful life of current bedding materials and to develop alternative uses of spent PL. Heat treatment of PL may extend bedding life and offer alternative uses of PL. The objective of this study was to determine if heat processed turkey litter (TL) can be reused as bedding for turkeys. Pine shavings (PS) which had been used as bedding to rear Large White male turkeys from hatch to 20 weeks of age was processed at 95 and 220 ?°C in an enclosed auger system. Four litter treatments (LT) were used: 1) control - new PS (T1), 2) TL processed at 95 ?°C (T2), 3) a 70:30 (w/w) mixture of TL processed at 95 or 220 ?°C (T3) and 4) a 95:5 (w/w) mixture of TL processed at 95 or 220 ?°C (T4). These bedding mixtures were placed in 36 floor pens in a randomized block design to provide 9 replicate pens per LT. Thirty Large White turkey hen poults were placed in each pen on day of hatch. The birds were reared to 14 wk. Mortality and feed consumption were monitored. Period and cumulative feed conversion (FC) ratios were calculated. Regression analysis of SAS, Inc. was used for data analysis. The LS Means procedure was used to separate treatment means (Pa?¤0.05). At 6 wks, T3 hens were heavier than T1 (1.78 kg), T2 (1.80 kg) or T4 (1.81 kg) hens. There were no differences in BW at 10 (5.42 kg) or 14 wk (8.67 kg) among treatments. There were no differences in FC. The LT did not affect bird mortality. Litter treated by the heat process used for this study produces a bedding material suitable for rearing market turkeys.
机译：规范家禽垫料（PL）土地使用的地方和国家法律可能要求根据作物需求和PL养分含量（例如N和P）来施用PL。此外，有些法律可能需要监测土壤金属（例如Cu和Zn）。即使努力减少粪便营养物的排泄，也需要延长现有床上用品的使用寿命并开发用过的PL的替代用途。 PL的热处理可以延长被褥的使用寿命，并提供PL的替代用途。这项研究的目的是确定经过热处理的火鸡垫料（TL）是否可以重新用作火鸡的垫料。松木屑（PS）被用作在孵化至20周龄后饲养大白雄性火鸡的垫层，在密闭的螺旋系统中于95和220°C进行加工。使用了四种垫料处理（LT）：1）对照-新PS（T1），2）在95°C（T2）下处理的TL，3）在95℃下处理的TL的70:30（w / w）混合物220°C（T3）和4）在95或220°C（T4）下处理的TL的95：5（w / w）混合物。将这些床上用品混合物以随机区组设计放置在36根地板笔中，每个LT提供9个重复笔。在孵化当天，将三十只大白火鸡母鸡放在每只钢笔中。鸟被饲养到14周。监测死亡率和饲料消耗。计算周期和累积饲料转化率（FC）。 SAS，Inc.的回归分析用于数据分析。 LS Means程序用于分离治疗方法（Pa？0.05）。在第6周时，T3母鸡比T1（1.78公斤），T2（1.80公斤）或T4（1.81公斤）母鸡重。处理之间的体重在10（5.42 kg）或14 wk（8.67 kg）时无差异。 FC没有差异。 LT不会影响鸟类死亡率。经本研究使用的热处理工艺处理后的废弃物产生了适合于饲养火鸡的床上用品。

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