Effect of heating system using a geothermal heat pump on the production performance and housing environment of broiler chickens
Effect of heating system using a geothermal heat pump on the production performance and housing environment of broiler chickens
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DOI：
10.3382/ps.2011-01666
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发表时间：
2012-02-01
期刊：
影响因子：
4.4
通讯作者：
Suh, O. S.
中科院分区：
文献类型：
--
作者：
Choi, H. C.;Salim, H. M.;Suh, O. S.
地热热泵是一种具有经济性和最佳生产性能的肉鸡舍供热的潜在热源。本试验旨在研究燃气热泵供暖系统对肉鸡生产性能和饲养环境的影响。还进行了比较分析之间的GHP系统和传统的加热系统，使用柴油作为燃料。总共将34，000只1日龄直跑肉鸡分配到2个肉鸡舍，每个鸡舍5个重复（3，400只鸡/重复围栏），持续35天。对鸡舍内氧气、CO2和NH3浓度、采暖能耗和成本以及肉鸡生产性能进行了评价。结果表明，GHP型肉鸡舍的日增重（1.73kg/只）显著高于常规型肉鸡舍（1.62kg/只）（P < 0.05）;在试验的前4周，加热系统对雏鸡的死亡率没有影响，但在试验的最后一周，在常规肉鸡舍中，雏鸡的死亡率显著增加。试验期间，鸡舍内氧气含量不受供暖系统的影响，但CO2和NH3含量在常规鸡舍中显著高于GHP鸡舍（P < 0.05）。实验期间，与传统住宅相比，GHP住宅的燃料消耗量显著降低（P <0.05），而电力消耗量显著增加（P < 0.05）。与传统住宅相比，GHP住宅供暖总能耗显著降低（P < 0.05）。由此可见，GHP系统可以提高肉鸡的生产性能，由于提高了鸡舍内的空气质量。GHP系统具有较低的CO2和NH3的排放量与较低的能源成本比传统的加热系统的肉鸡。
A geothermal heat pump (GHP) is a potential heat source for the economic heating of broiler houses with optimum production performance. An investigation was conducted to evaluate the effect of a heating system using a GHP on production performance and housing environment of broiler chickens. A comparative analysis was also performed between the GHP system and a conventional heating system that used diesel for fuel. In total, 34,000 one-day-old straight run broiler chicks were assigned to 2 broiler houses with 5 replicates in each (3,400 birds/replicate pen) for 35 d. Oxygen, CO2, and NH3 concentrations in the broiler house, energy consumption and cost of heating, and production performance of broilers were evaluated. Results showed that the final BW gain significantly (P < 0.05) increased when chicks were reared in the GHP broiler house compared with that of chicks reared in the conventional broiler house (1.73 vs. 1.62 kg/bird). The heating system did not affect the mortality of chicks during the first 4 wk of the experimental period, but the mortality markedly increased in the conventional broiler house during the last wk of the experiment. Oxygen content in the broiler house during the experimental period was not affected by the heating system, but the CO2 and NH3 contents significantly increased (P < 0.05) in the conventional broiler house compared with those in the GHP house. Fuel consumption was significantly reduced (P < 0.05) and electricity consumption significantly increased (P < 0.05) in the GHP house compared with the consumption in the conventional house during the experiment. The total energy cost of heating the GHP house was significantly lower (P < 0.05) compared with that of the conventional house. It is concluded that a GHP system could increase the production performance of broiler chicks due to increased inside air quality of the broiler house. The GHP system had lower CO2 and NH3 emissions with lower energy cost than the conventional heating system for broiler chickens.