Effect of manure handling on air quality and pig ...

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Title Effect of manure handling on air quality and pig performance in partially slatted floor barns
Author(s) Lius A. Bate, R. R. Hacker, P. A. Phillips
Journal Canadian Agricultural Engineering
Date 1988
Volume 30
Issue 1
Start page 107
End page 110
Abstract Two trials were carried out to determine the effect of manure handling systems (MHS) on the performance of growing-finishing pigs when ventilation rate was governed by temp. The first trials compared accumulated manure (1 m-deep pit) and subsequent evacuation from under slats with continuous gravity manure flow (GMF). The second trial compared GMF (control) with flushing with either fresh, aerobically or anaerobically stored manure. No significant differences were found among the environmental parameters or pig performance in the first trial. In the second trial, higher levels of carbon dioxide were noted in all the flushed rooms. Ammonia levels were higher when flushing was done with anaerobically stored manure, while flushing with fresh manure resulted in highly variable but large increases in hydrogen sulphide. The pH of the manure in the control rooms was always lower than for the flushed rooms. These environmental modifications did not result in differences in animal health or pig performance. Pigs could be raised and finished on partially slatted floors using any of the MHS described here without detrimental effects..

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