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Publication List Economics Department: 1984 - 1988, Department Of Economics Jan 1988

Publication List Economics Department: 1984 - 1988, Department Of Economics

Economics Pamphlet Series

The publications listed herein were prepared during 1984 - 1988 by the faculty and graduate students in the Economics Department at South Dakota State University in the course of their research, extension, and teaching duties. The publications are arranged by the basic areas of concentration in the department: agricultural marketing, farm and ranch management, energy and water resource development, and rural development and public affairs.


Characteristics Of Milk And Butter From Cows Fed Sunflower Seeds, Robert Paul Middaugh Jan 1988

Characteristics Of Milk And Butter From Cows Fed Sunflower Seeds, Robert Paul Middaugh

Electronic Theses and Dissertations

Composition of milk and butter was evaluated from cows fed either control, or experimental diets containing added added fat of partially unsaturated fatty acid composition. The control diet concentrate mix consisted mainly of corn and soybean meal. The two experimental diets substituted either 20% high oleic acid sunflower seeds () 79% of fatty acids as oleic acid) or 20% regular sunflower seeds () 67% of fatty acids as linoleic acid) for part of the corn and soybean meal in the concentrate -mix. Milk protein concentration was similar for the control (3.3%) and high oleic sunflower seeds (3.3%), but increased in …


Lactational Evaluation Of Recombinant Bovine Somatotropin With Corn And Barley Diets, Wade Arthur Eisenbeisz Jan 1988

Lactational Evaluation Of Recombinant Bovine Somatotropin With Corn And Barley Diets, Wade Arthur Eisenbeisz

Electronic Theses and Dissertations

Forty-eight Holstein cows were randomly assigned wk 3 postpartum to a corn or barley diet from wk 4 through 44 postpartum. Cows within diets at wk 14 were randomly assigned to receive 0 (control), 10.3, 20.6, and 30.9 mg/hd/d of recombinant bovine somatotropin injected wk 15 through 44 postpartum. Forage dry matter was 80% corn silage and 20% alfalfa hay. Forage to concentrate ratio in total mixed diets varied from 50:50 to 70:30 with milk production. For the entire lactation, milk production of (29.7 and 29.1 kg/d) and 4% FCM (27.3 and ·25.9 kg/d) was lower for cows fed barley …