STUDIES ON THE FEEDING VALUE OF TUBERS FROM JERUSALEM ARTICHOKE (Helianthus tuberosus L.) FRESH OR ENSILED WITH AMMONIATED RICE STRAW . | ||
| Journal of Animal and Poultry Production | ||
| Article 5, Volume 28, Issue 7, July 2003, Pages 5269-5275 PDF (903.07 K) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/jappmu.2003.252532 | ||
| Author | ||
| A. A. Osman, | ||
| Department of Animal ProductIon, Faculty of Agriculture, Suez Canal University, Ismaflia, Egypt | ||
| Abstract | ||
| The studied material consisted of tubers of the Jerusalem artichoke. The basic chemical composition. the amino acid and macroelement contents were determined. The dry matter content in tubers was 24.2 %. While. crude protein, crude fiber, ether extract, nitrogen free extract and ash content (on DM basis) were 8.91, 5.73,0.85.78.26 and 6.25 %. Results indicated that tubers contain large proportion of methionine, tryptophan, threonine and traces of cystine. The content of calcium being 0.16 g/kg OM, while. phosphorus was 1.22 g/kg OM. Silage was made from tubers of the Jerusalem artichoke and ammoniated rice straw (25% of total fresh weight) to Increase the nitrogen and crude tiber content. Composition of silage was 41.15% OM, 9.35% crude protein, 15.02% crude tiber, and 67.13 % nitrogen free extract (on OM basis). Apparent digestibility coefficients of tubers and its silage were determined in two trials using five male Os simi sheep. The digestibility coefficients obtained from the 2 trials were 76,18 and 72.52% OM, 79.24 and 75.15% OM, 65.19 and 61.73% CP, 52.05 and 53.17% CF and 86.12 and 79.35% NFE for fresh tubers and its silage, respectively. When the tubers was ensiled with ammoniated rice straw, digestibilities of all nutrients decreased than fresh tubers except crude fiber. The nutritive values were 77.21 and 68.38% TON, and 5,81 and 5,77% OCP for fresh tubers and its silage, respectively. It is concluded that the tubers from Jerusalem artichoke and its silage can be in feeding ruminants. | ||
| Keywords | ||
| Nutritive value· Digestibility' Jerusalem artichoke tubers > silage·; sheep | ||
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