Studies on energy metabolism in swine. I. Trial production of equipment for Testing respiration of piglets and evaluation of its performances.:I. Trial Production of Equipment for Testing Respiration of Piglets and Evaluation of Its Performances
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概要
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A trial apparatus for testing respiration of poultry of open type and of weight model (HALDENE Type) was modified in this study for use in piglets. Its performance and capabilities were examined by its actual applications to the piglets. The following results were obtained.(1) Blank test: Tests were conducted on whether or not carbon dioxide gas and moisture from the atmosphere brought into the chamber could completely be eliminated by the CO2 and H2) removal kit with three different amounts of aeration of 3 liters/min, 6 liters/min. and 8 liters/min. The results revealed that carbon dioxide gas and moisture were completely removed with an aeration amount of 8 liters per minute.(2) Recovery test of moisture and carbon dioxide gas: Recovery test of moisture and carbon dioxide gas which were generated in the chamber was conducted to find that the recovery rate with an aeration amount of 6 liters/min. proved to be the best possible showing that of moisture bnd that of carbon dioxide gas as 100.5±0.33% and 99.5±0.10%, respectively, while the recovesy rate with 8 liters/min. tended to be lower.(3) Test on the limit of carbon dioxide gas absorption: In order to find the limit amount of absorption of carbon dioxide gas generated in the chamber with the carcon dioxide gas absorption set, tests were conducted with five diffenent amounts of carbon dioxide gas of 80g through 160g which was generated in the chamber. The results showed that the recovery rate of 80g yielded the highest value of 99.7±0.08%, and the performance of the set was lower as the volume of carbon dioxide gas increased toward 160g.(4) Experiments with actual use of F1 piglets: (Berkshire×Sus scrofa):The results of test on the respiration of the piglets weighing approx. 18kg revealed that the consumption of oxygen, generation of carbon dioxide gas RQ and generated heat per hour were 0.674±0.022 liter/kg0.75, 0.666±0.026 liter/kg0.75, 0.989±0.003 and 3.38±0.11kcal/kg0.75, respectively.Results of high accuracy can therefore be expected when this apparatus is applied to respiration test of piglets with an aeration amount of 6 liters per minute, for tests on 8 hours per day.
- 日本養豚学会の論文
日本養豚学会 | 論文
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