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Table 3 Estimates of the effects of the factors studied on daily feed intake (in kilograms per pig) in 683 batches from 93 grow-finishing pig farms

From: Factors affecting the daily feed intake and feed conversion ratio of pigs in grow-finishing units: the case of a company

Variable Category Mean (kg) Estimate (s.e.) 95 % CL
Low Upper P-value
Intercept   0.73 (0.07) 0.58 0.88 < 0.001
No pigs per pen < 20 2.11 −0.04 (0.01) −0.06 −0.02 < 0.001
  > 20 2.16 0
Type of feeder Others (linear dump) 2.12 −0.03 (0.01) −0.05 −0.003 0.03
  Conical semiautomatic 2.15 0
ORIGSEX SPU / barrows 2.15 0.02 (0.01) 0.005 0.04 0.009
  SPU / females 2.12 −0.01 (0.01) −0.03 0.003 0.12
  SPU / mixed 2.13 0.0004 (0.0071) −0.013 0.014 0.95
  Farrow-to-finish / mixed 2.13 0
IW   0.008 (0.002) 0.004 0.013 < 0.001
FW   0.01 (0.00) 0.01 0.01 < 0.001
  1. s.e. standard error, CL confidence level, ORIGSEX variables ¨origin ¨ and ¨sex¨ combined, SPU specialized piglet production unit, IW initial weight, FW final weight