The transition period of a cow is characterized by marked changes in metabolism as the cowprepares for parturition and lactogenesis. Aim of the present study was the evaluation of the effect of feeding dairycows with malt extracts on milk production. Ten days before calving, 22 multiparous Holstein dairy cows weredivided in two groups and received for four months the same base diet added with an experimental concentrate(1.5kg/cow/day) containing either corn starch and malt extracts (ME) or only corn starch (CS) as the main energysource. Dry matter intake was not influenced by treatment and averaged 21.7kg of DM/cow/day. The use of maltextracts determined a numerical increase of milk yield (+0.7kg/cow/day, i.e. +2.5%) but this difference did notreach the significance level. Milk quality parameters were not influenced by treatment. Further studies will beneeded to assess if feeding diets rich in very high fermentable carbohydrates to transition dairy cows can be avaluable strategy.[...]
Effect of dietary supplementation with malt extracts on milk production
FUSARO, ISA;PEZZI, PAOLO;FORMIGONI, Andrea
2007-01-01
Abstract
The transition period of a cow is characterized by marked changes in metabolism as the cowprepares for parturition and lactogenesis. Aim of the present study was the evaluation of the effect of feeding dairycows with malt extracts on milk production. Ten days before calving, 22 multiparous Holstein dairy cows weredivided in two groups and received for four months the same base diet added with an experimental concentrate(1.5kg/cow/day) containing either corn starch and malt extracts (ME) or only corn starch (CS) as the main energysource. Dry matter intake was not influenced by treatment and averaged 21.7kg of DM/cow/day. The use of maltextracts determined a numerical increase of milk yield (+0.7kg/cow/day, i.e. +2.5%) but this difference did notreach the significance level. Milk quality parameters were not influenced by treatment. Further studies will beneeded to assess if feeding diets rich in very high fermentable carbohydrates to transition dairy cows can be avaluable strategy.[...]I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
