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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