Voluntary feed intake and growth performance of slow-growing pigs fed on increasing levels of ensiled potato hash meal |
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Authors: | C. N Ncobela A. T Kanengoni R. S Thomas M. Chimonyo |
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Affiliation: | 1.Animal and Poultry Science, School of Agricultural, Earth and Environmental Sciences,University of KwaZulu-Natal,Pietermaritzburg,South Africa;2.Agricultural Research Council-Animal Production Institute (Nutrition Building),Irene,South Africa;3.Veterinary Services and Research Department,Joburg Zoo,Johannesburg,South Africa;4.College of Agriculture and Environmental Sciences,University of South Africa,Florida,South Africa |
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Abstract: | The objective of the study was to determine voluntary feed intake and growth performance of Windsnyer pigs fed on increasing levels of potato hash silage meal. Thirty-six growing Windsnyer pigs (19 kg ± 5.59) (mean ± standard deviation (SD)) were individually and randomly assigned to six experimental diets containing 0, 80, 160, 240, 320 and 400 g/kg DM of potato hash silage. Diets containing the potato hash silage were formulated using diet dilution method from 0 g/kg and 400 g/kg. Six pigs were fed on each diet ad libitum for 6 weeks. Average daily feed intake (ADFI), average daily gain (ADG), gain to feed (G/F) ratio, scaled feed intake (SFI) and scaled average daily gain (SADG) were measured weekly. Increasing levels of potato hash silage caused a decrease (P < 0.05) in ADG, G/F ratio and SADG. The ADFI interacted significantly (P < 0.05) with the inclusion level of potato hash silage and week of feeding. Pigs fed on 240 g/kg potato hash silage had greater ADFI in the second, third and fourth week of feeding. There was a quadratic increase (P < 0.05) in ADFI. There was a linear decrease (P < 0.05) in ADG and G/F ratio and SADG as the potato hash silage level increased. Using piecewise regression, potato hash silage can be included up to 240 g/kg DM in Windsnyer pigs without undermining growth performance. |
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