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Effect of cooking wheat and maize on the performance of newly weaned pigs 1. Age and weight at weaning

Published online by Cambridge University Press:  18 August 2016

P.G. Lawlor ,
P.B. Lynch ,
P.J. Caffrey  and
J.V. O’Doherty
P.G. Lawlor*
Affiliation:
Pig Production Department, Teagasc, Moorepark Research Centre, Fermoy, Co. Cork, Ireland
P.B. Lynch
Affiliation:
Pig Production Department, Teagasc, Moorepark Research Centre, Fermoy, Co. Cork, Ireland
P.J. Caffrey
Affiliation:
Department of Animal Science and Production, Faculty of Agriculture, University College, Dublin, Ireland
J.V. O’Doherty
Affiliation:
Department of Animal Science and Production, Faculty of Agriculture, University College, Dublin, Ireland
*
†Present address: Teagasc, Clonakilty Agricultural College, Darrara, Clonakilty, Co. Cork, Ireland.. E-mail:[email protected]
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Abstract

The objective of this study was to determine if weight and age at weaning affect the response of pigs to inclusion of cooked cereal in their post-weaning diet. In experiment 1, pigs (no. = 116) weaned at 17 to 28 days of age and weighing between 4 and 10 kg were individually given for 28 days post weaning, diets based on: (1) uncooked cereal or (2) cooked cereal (steamed and flaked wheat and maize). The gelatinized starch proportion was 0•265, 0•838, 0•203 and 0•745 for uncooked maize, steam flaked maize, uncooked wheat and steam flaked wheat, respectively. Pigs were offered 2•5 kg of starter diet (16•1 MJ digestible energy (DE) per kg and 17•4 g/kg of lysine). This was followed in each case by link diet (15•2 MJ DE per kg and 16•2 g/kg of lysine) to 28 days post weaning. Thereafter, pigs were grouped and given a common weaner diet and a common finisher diet to slaughter. In experiment 2, pigs (no. = 408) were weaned at between 20 and 28 days of age. Pigs were allocated by weight to heavy (7 to 8 kg), medium (6 to 7 kg) and light (5 to 6 kg) groups (24 groups of 17 pigs) and assigned to treatments as in experiment 1 for 26 days. A common weaner diet was offered between day 26 and day 56. In experiment 1, pig weight, food intake, daily gain, food conversion efficiency and carcass measurements were not affected by cooking (P > 0•05). Regression analysis indicated that weight and age at weaning had a significant association with weight at 28 days post weaning for uncooked (R2 = 0•628; P < 0•001) and cooked (R2 = 0•579; P < 0•001) cereal diets. In experiment 2, there was no interaction between weaning weight and cooking (P > 0•05) and no performance benefit resulted from cooking (P > 0•05). In conclusion, steam flaking did not improve pig performance during the treatment period or at any subsequent period.

Keywords

cerealsflakingpigssteaming.
Type
Non-ruminant nutrition, behaviour and production
Information
Animal Science , Volume 76 , Issue 2 , April 2003 , pp. 251 - 261
Copyright
Copyright © British Society of Animal Science 2003

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