Effect of sweet potato, Canada potato and squash for finishing pigs.
1988
Chung I.B. | An J.N. | Song J.D. | Cheong S.K.
This experiment was carried out to investigate the amounts of production, nutritive value, digestibility and the substitution effect of sweet potato, Canada potato and squash for formula feed in finishing pigs. Total 33 heads of Landrace weighing about 55kg were used (9 heads in digestible trial). The levels of substitution of sweet potato, Canada potato and squash for formula feed of finishing pigs (based upon dry matter) were 40, 25 and 5%, respectively. The total amounts of production per 10 are of sweet potato, Canada potato and squash were 2,867, 2,982 and 4,396kg respectively and the amounts of production per 10 are on the basis of dry matter were height in order of Canada potato, sweet potato, squash, but there was little difference in the costs produced per 1kg on the basis of moisture content. The value of digestible energy of sweet potato, Canada potato and squash were 723,539 and 83 kcal/kg respectively, and the amounts of digestible energy production per 10 are of sweet potato were more by 129% and 570% respectively than those of Canada potato and squash. There was no significant difference in daily gain between formula feed (100%) and sweet potato (40%) + formula feed (60%), but significant (P < .05) among formula feed (100%), Canada potato (25%) + formula feed (75%), squash (5%) + formula feed (95%). Compared to control (100% of formula feed), the amounts of dry matter intake per 1kg gain in sweet potato, Canada potato and squash substituted treatments were less by 0.4, 0.42 and 0.35kg respectively. There was no significant difference in dressing percentage and backfat thickness among treatments but feed cost per 1kg gain in the pigs fed sweet potato, Canada potato or squash was higher by 63, 76 and 120 respectively than that of formula feed (100%).
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