INGESTIVITY OF CORN SILAGE BY FATTENING SWINE
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概要
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The utility of whole crop corn silage in fattening swine was investigated in the present study. The pigs were given the silage and the conventional compounded feed in ratios of 6% and 3% to their body weights, respectively. Intake, weight gains, traits of carcasses, and the changes in the composition of ingested silage following selective ingestion by the fattening swine were determined.1. Total intakes of the silage and of the compounded feed amounted to 283.9kg and 224.4kg, respectively, during the growth from 20kg to 90kg of body weights. An equation of Y=0.037X+0.250 (X: kg of body weight, Y: fresh matter in kg of daily silage intake) could be obtained between the mean body weight (X) and the mean daily silage intake.2. It was observed that the pigs tended to ingest certain parts of the corn silage selectively. The percentages in the composition of the ingested silage were higher in crude fat and NFE and lower in crude fiber and crude ash than those of the silage offered throughout the experiment period.3. Mean daily gains during the growing period amounted to 373g from 20 to 55kg, 663g from 55 to 90kg, and 485g from 20 up to 90kg, respectively.4. It was recognized that the weights of stomach were larger and the melting points of fat in carcasses were lower among other characteristics of the carcasses in the swine subjected to the present study than the regular carcasses, and that the development of the tissues of salivary gland was remarkable.
- 日本養豚学会の論文
日本養豚学会 | 論文
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