| Summary: | 碩士 === 國立中興大學 === 農業機械工程學系 === 85 === Modular pig houses are designed to create suitable environment
for pig production with heating facility during cold weather and
originally applied in the area of temperate climate. It is
necessary to add cooling equipments into modular pig houses for
their application in Taiwan area with subtropical climate. The
experiment of this study consists of designing and setting up
air conditioning system for raising sow and piglets during hot
weather, measuring and analyzing the environmental data, and
evaluating the performance of the pig growth.The major
experimental results are described as follows: Concentrations
of H2S and NH3 are in the acceptable range and dust density is
higher than recommended standard with releasing manure pond
twice per week. Average daily temperature difference between
inside and outside can reach 6.35℃ with air conditioning system
and feeding 7 sows and 62 piglets for summer operation. The
energy cost is NT 3760 dollar / month which is equivalent to
1162 kwh. Average inside temperature is in the range form 24 to
25℃and is 6 - 9 ℃higher than the average outside temperature
for winter operation.Performance evaluations are conducted with
piglets from 8 sows raising at modular and traditional houses
for comparison. There exists no significant difference for
survival rate . Weight gain and feed conversion rate of piglets
in modular houses are better than those in traditional houses.
Average weights of piglets at modular and traditional houses
are 8.8 and 6.3 kg for 4 - week old, 1.85 and 13.0 kg for 8 -
week old. Feed conversion rate are 1.67 and 1.85 .
Experimental results imply that reducing raising time and
increasing productive efficiency can be reached by applying
modular pig house
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