Post-weaning voluntary food intake of pigs weaned at 2 or 4 weeks of age

McCracken, K.J.

Occasional Publication British Society of Animal Production 13: 101-102

1989


DOI: 10.1017/s0263967x00003128
Accession: 001914179

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Abstract
In experiment 1, 6 litters of piglets were weaned at 14 days and fed for 22 days on a diet containing flaked maize 317.5, dried skim milk 280, fatted skim milk (fat 400 g/kg) 140, fish meal 120, sucrose 100, groundnut oil 40 and trace minerals and vitamins 2.5 g/kg. In the 2nd experiment, 6 litters were weaned at 28 days and fed for 16 days on a diet of ground flaked maize 250, ground wheat 162.5, ground barley 100, fatted skim milk (fat 250 g/kg) 150, fish meal 100, soya 175, sucrose 25, fat concentrate 25, calcium dihydrogen phosphate 10 and trace minerals and vitamins 2.5 g/kg. In experiment 1, initial liveweights were 2.8 to 6.5 kg and final weights were 7.5 to 15.6 kg. Metabolizable energy (ME) intake increased rapidly to 2.3 MJ/pig by day 4 after weaning and increased rapidly by day 22 to 12.8 MJ/day. In experiment 2, initial weights were 5.2 to 9.8 kg and final weights were 9.5 to 17.0 kg. Daily ME intake increased rapidly to 3.8 MJ/pig by day 4; after a further 10 days mean ME intake was 9.8 MJ/day.