共 17 条
[1]
ARKES JG, RESULTS DUTCH SWINE
[2]
BRAKE JHAT, 1986, NETH J AGR SCI, V34, P427
[4]
SOW CULLING - REASONS FOR AND EFFECT ON PRODUCTIVITY
[J].
LIVESTOCK PRODUCTION SCIENCE,
1979, 6 (02)
:167-177
[6]
SOW REPLACEMENT - A COMPARISON OF FARMERS ACTUAL DECISIONS AND MODEL RECOMMENDATIONS
[J].
LIVESTOCK PRODUCTION SCIENCE,
1989, 23 (1-2)
:207-218
[9]
DIJKHUIZEN AA, 1983, THESIS UTRECHT