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The energy requirements of sheep for maintenance and gain. 1. Pen fed sheep



The energy requirements of sheep for maintenance and gain. 1. Pen fed sheep



J. Agric. Sci, 58: 179-186



After a review of the literature on maintenance and feeding standards for sheep 4 experiments with sheep housed and fed in pens are reported; they showed that there is a considerable discrepancy between current standards and the actual requirements of pen-fed animals. In the first, with 15 Corriedale sheep of 115 lb liveweight fed at maintenance for 13 weeks, daily digestible organic matter (DOM) requirement for maintenance was 0.92 +or- 0.07 lb. In the second 12 Romney ewes of 106 lb were fed for 5 months, 6 on sub-maintenance and 6 on super-maintenance. Daily DOM requirement for maintenance was 0.99 +or- 0.05 lb and for gain 2.29 +or- 0.20 lb per lb. For maintenance 13 Romney ewes of 110 lb fed for 8 weeks at sub-and super-maintenance required 1.04 +or- 0.13 lb DOM and for gain 2.25 +or- 0.24 lb per lb. With 24 Romney ewes of 107 lb there was no significant difference between groups given fresh grass, dried grass, pellets, lucerne hay and ryegrass straw for 11 weeks and the mean daily DOM requirement was 1.00 +or- 0.11 lb. From those results the final estimate for maintenance of a 100 lb penned sheep was 0.92 lb DOM, 0.96 lb total digestible nutrients or 0.89 lb starch equivalent.

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Accession: 014246184

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DOI: 10.1017/s0021859600010133



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