Table 3

Genetic correlations (± standard errors) between excretion traits and performance

Trait1

CDUDM

FEW/BW

DEW/BW

FEW/FI

WE

NE/NI

PE/PI

NE/PE


BW23

0.16 ± 0.06

-0.16 ± 0.21

-0.20 ± 0.15

0.44 ± 0.16

0.86 ± 0.10

-0.19 ± 0.12

0.03 ± 0.19

-0.52 ± 0.18

WG

0.21 ± ne

-0.28 ± ne

-0.29 ± ne

0.02 ± ne

0.24 ± 0.22

-0.37 ± ne

-0.42 ± 0.15

-0.16 ± ne

FI

-0.75 ± ne

0.58 ± ne

0.73 ± ne

0.41 ± ne

-0.17 ± 0.18

0.45 ± ne

0.20 ± 0.14

0.34 ± 0.16

FCR

-0.98 ± 0.01

0.99 ± 0.03

0.92 ± 0.05

0.76 ± ne2

-0.27 ± ne

0.95 ± ne

0.66 ± 0.11

0.88 ± ne

AMEn

0.99 ± 0.00

-0.97 ± 0.04

-0.92 ± 0.03

-0.66 ± 0.07

0.46 ± 0.15

-0.99 ± 0.01

-0.64 ± 0.07

-0.84 ± 0.08

RFI

-0.64 ± ne

0.91 ± ne

0.88 ± ne

0.38 ± 0.15

-0.15 ± ne

0.37 ± 0.09

0.08 ± 0.14

0.30 ± ne


1 BW23, body weight at 23 d; WG, weight gain between 17 and 23 d; FI, feed intake between 17 and 23 d; FCR; feed conversion ratio; AMEn, apparent metabolisable energy corrected for zero nitrogen balance; RFI, residual feed intake; CDUDM, coefficient of digestive use of dry matter; FEW/BW and DEW/BW, fresh and dry excreta weight relative to body weight at 23 d; FEW/FI, fresh excreta weight relative to feed intake; WE, water content of excreta; NE/NI, PE/PI, ratio of nitrogen and phosphorus excretion to intake; NE/PE, ratio of nitrogen to phosphorus excretion.

2 ne: not estimated

de Verdal et al. BMC Genetics 2011 12:71   doi:10.1186/1471-2156-12-71

Open Data