Effect of dietary regime and group structure on pig performance and the variation in weight and growth rate from weaning to 20weeks of age

Autor: C.S. Mayne, F. J. Gordon, V. E. Beattie, M. J. Robinson, M.E.E. Ball, Elizabeth Magowan, M. Scott, R. Bradford, K.J. McCracken
Rok vydání: 2011
Předmět:
Zdroj: Livestock Science. 136:216-224
ISSN: 1871-1413
DOI: 10.1016/j.livsci.2010.09.013
Popis: This study aimed to improve lifetime pig performance and reduce variation in growth rate between pigs using managerial and nutritional practices. The experiment (2 × 2 × 2 factorial) compared uniform and mixed weight grouping (SD of weight in group at weaning 0.7 kg and 1.6 kg respectively), offering pigs a high (12 kg) or low (6 kg) allowance of starter diets post weaning and either a special (DE 14.5 MJ/kg, total lysine 11 g/kg) or normal (DE 13.5 MJ/kg, total lysine 9.5 g/kg) finishing diet. Over six time replicates, 960 pigs (Landrace × Large White) were randomly allocated at weaning (28 ± 2 days of age) into groups of 20 according to weight and sex and these groups were split at 10 weeks of age (transfer to finishing accommodation) into two groups of 10. Finishing diet was offered from 11 weeks of age. The FCR of pigs (wean–7 weeks of age) was significantly (P
Databáze: OpenAIRE
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