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Changes in the zymogenic cell populations of the abomasa of sheep infected with Haemonchus contortus
(1998-06)
The effects of dietary urea supplementation and of a 10-week trickle infection regime, simulating chronic exposure to Haemonchus contortus, on the zymogenic population of the abomasa of Hampshire Down lambs was examined, ...
The influence of dietary supplementation with urea on resilience and resistance to infection with Haemonchus contortus
(1998-01)
Previous research has indicated that supplementing an apparently adequate diet with additional protein improves both host resistance and resilience in lambs infected with Haemonchus contortus. The present study tested the ...