Agricultural and Food Science · 1998 · 10 citations · 13 references
AgricultureAnimal SciencesNutritional SciencesAnimal NutritionLivestock ProductionRuminant NutritionCalf NutritionDairy Cattle NutritionEnergy NutritionFeeding ManagementForage NutritionLivestock NutritionAmino AcidsFree Access FeedingHeifer Feed EfficiencyHeifer NutritionMetabolizable Energy IntakeMetabolizable Energy RequirementSilage NutritionWinter Nutrition
Thirty Hereford-Ayrshire (HfAy) and 29 Limousine-Ayrshire (LiAy) spring-calving heifers in calf to a Aberdeen Angus (Ab) bull were used to study the effects of cow breed and winter diet on performance. The diets were either primarily based on hay (H, 2/3 of dry matter (DM) intake, silage 1/3) or silage (S, 2/3 of DM intake, hay 1/3). In addition, animals were offered 1.0 kg milled barley per head daily for two months prior to calving and 1.5 kg/day from calving until grazing commenced. Animals also had free access to barley straw. During the indoor feeding period from 15 December to 1 June HfAy-heifers consumed slightly but not significantly more feed DM, metabolizable energy and AAT (amino acids absorbed from the small intestine) than LiAy-heifers on both diets. At the start of the experiment LiAy- and HfAy-heifers were 572 and 596 (P
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A NEW REAGENT FOR THE DETERMINATION OF SUGARS
Michael Somogyi · Journal of Biological Chemistry · 1945 · 2.5K citations · Full text