Value of Supplementary Feeding with Pelleted Maize or Grass Hay for Lactating Cows Grazing Fertilized Grass Pastures in Puerto Rico.

Milk production of fall-calving dairy cows during summer grazing of grass or grass-clover pasture.

Milk production of fall-calving dairy cows during subsequent summer grazing was evaluated in two consecutive years using a total of 80 mid- to late-lactation Holsteins. Cows calved during September and October and grazed from April to August in the following year. In yr 1, 27 cows grazed a native grass pasture and 13 cows grazed a native grass-clover mixed pasture containing 26% red clover and ...

Evaluation of a mobile computerized grain feeder for lactating cows grazing grass pasture.

The objective of this study was to evaluate a mobile computerized grain feeder for use to feed individually Holstein cows grazing grass pasture. Thirty-two Holstein cows averaging 95 d of lactation and 39.3 kg/d of milk were rotationally grazed on predominantly Dactylis glomerata pastures for 9 wk starting in early May. Cows were blocked according to parity, days of lactation, and milk yield. C...

On Subclover-Grass Pastures

------------------------------------------------------------------------------------------------20 AUTHOR: Thomas E. Bedell, former Assistant Professor of Range Management at Oregon State University, is now an Extension Range Management Specialist at the University of Wyoming, Laramie. Performance by Cattle and Sheep On Subclover-Grass Pastures

Lactational responses to postruminal infusions of amino acids in dairy cows fed maize silage, hay or grass silage.

Duodenal infusions of methionine and ly-sine have been shown to increase milk protein yield in dairy cows given a dehydrated maize diet (Rulquin, 1987). As du-odenal amino acids (AA) profiles vary according to diet (Le Henaff, unpublished), a trial was undertaken to test the lactational responses of dairy cows to methionine and lysine infusions with 3 other diets based on either maize silage (M...

Effect of yeast culture supplementation of alfalfa silage or alfalfa hay fed to lactating dairy cows