Single cell protein from wood pulp waste as a feed supplement for lactating cows

Journal Article · Sun Jan 01 00:00:00 EST 1984 · J. Dairy Sci.; (United States)

DOI:https://doi.org/10.3168/jds.S0022-0302(84)81287-4· OSTI ID:5934527

Claypool, D W; Church, D C

Twenty-four Holstein cows were assigned to one of three rations at the beginning of their first or second lactation and were kept on the rations for 16 wk. Rations differed only that a single cell protein material marketed under the name RayPro (ITT Rayonier, Inc., trademark) was substituted for cottonseed meal at 0, 3, and 7% (dry matter) of the total ration. Crude protein analyses were 15.6, 15.9, and 16.5% for rations containing 0, 3, and 7% RayPro. Rations were composed of 50% concentrate, 25% chopped alfalfa hay, and 25% corn silage dry matter. Milk fat percentages were 3.2, 3.6, and 3.7% for rations with 0, 3, and 7% RayPro. Cows fed the ration containing 7% RayPro had higher rumen ammonia (6.0, 5.9, 8.1 mg/dl) and higher urea in blood plasma (12.7, 14.9, 16.3 mg/dl) than cows fed the 0 and 3% RayPro rations. RayPro is an acceptable substitute for conventional protein supplements in amounts used in this trial when fed as part of a completely mixed ration. 12 references, 2 tables.

• Research Organization: Oregon State Univ., Corvallis, OR (United States)
• OSTI ID: 5934527
• Journal Information: J. Dairy Sci.; (United States), Vol. 67:1
• Country of Publication: United States
• Language: English

Related Subjects

59 BASIC BIOLOGICAL SCIENCES
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
ANIMAL FEEDS
TESTING
SINGLE CELL PROTEIN
CHEMICAL ANALYSIS
WOOD WASTES
RECYCLING
BLOOD PLASMA
CATTLE
LACTATION
MILK
WASTE PRODUCT UTILIZATION
ANIMALS
BIOLOGICAL MATERIALS
BLOOD
BODY FLUIDS
DOMESTIC ANIMALS
FOOD
MAMMALS
MATERIALS
RUMINANTS
SOLID WASTES
VERTEBRATES
WASTES
550300* - Cytology
320305 - Energy Conservation
Consumption
& Utilization- Industrial & Agricultural Processes- Industrial Waste Management