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Filtering by: Contributor advisor sim Meyer, Howard H. Remove constraint Contributor advisor sim: Meyer, Howard H. Language English [eng] Remove constraint Language: English [eng]

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Inheritance of antibodies synthesized against IBR vaccine and of complement C3 component in weanling calves

Creator:

Muggli, Noelle Elizabeth

Abstract:

Three sets of blood samples were taken from 532 beef calves of two populations at 24 to 48 h after birth, at an average age of 164 d (at time of vaccination for infectious bovine rhinotracheitis virus or IBRV) and at an average age of 224 d (60 d postvaccination)....

Resource Type:

Dissertation
Effect of early exposure of tansy ragwort (Senecio jacobaea) on future grazing preferences of sheep

Creator:

Naranjo R., Victor Hugo

Abstract:

Tansy ragwort (Senecio iacobea) is a widely distributed weed in the Pacific Northwest (U.S.A.) where it causes severe damage to the livestock industry. Sheep are highly resistant to toxic effects of ragwort, therefore, induction of ragwort preference in sheep was sought as a means to control this poisonous plant. The...

Resource Type:

Masters Thesis
Genetic and environmental influences on lamb carcass indices and muscle fiber ratios

Creator:

Arnold, Andrew M.

Abstract:

Two concurrent trials were conducted to examine genetic and environmental influences on growth rate, carcass fatness and muscle fiber type proportions. Trial 1 compared Polypay and Coopworth x Polypay male lambs either left intact or castrated early, mid or late in growth. Trial two compared Hampshire sired lambs (females, early...

Resource Type:

Masters Thesis
Effects of pasture and management variables on forage intake by grazing sheep

Creator:

Lewis, Robert David

Abstract:

Grazing experiments were conducted in summer, autumn and winter to assess the effects of stock density, grazing duration, pre-grazing pasture mass and stock type on forage intake by sheep grazing at high stock densities for short durations. In summer and winter, sheep were stocked at 200 sheep/ha on 0.1 ha...

Resource Type:

Dissertation
Effects of differential ewe body condition at mating and early post-mating nutrition on embryo survival

Creator:

West, Kathryn S.

Abstract:

Two trials were conducted over consecutive years to examine the effects of ewe body condition and post-mating nutrition on ovulation rates and embryo survival. Trial 1 used 146 Polypay ewes ranging in age from 5 to 8 years in a 3 x 2 factorial array of pre-mating (high-H, low flushed-LF...

Resource Type:

Masters Thesis
Genetic and environmental variation in production components of purebred and crossbred ewes

Creator:

Nawaz, Mohammad, 1957-

Abstract:

Coopworth sheep, a newly available genotype, were compared with other genotypes in two trials to assess cumulative lamb and wool production and contributing components related to survival, reproduction and growth, and for the effects of ewe body weight on reproductive traits. In a third trial, various genotypes generated in the...

Resource Type:

Dissertation
Effects of body condition and pre-lambing supplementation on ewe productivity

Creator:

Khan, Khalidullah

Abstract:

A series of trials was conducted with Polypay (P), Coopworth (CP), Hampshire (H), and crossbred ewes over a two year period at three locations to assess the effects of ewe body condition and pre-lambing supplementation on ewe productivity. Supplementation trials were conducted at all three locations in Year 1 using...

Resource Type:

Masters Thesis
Effect of callipyge gene on lamb growth, carcass characteristics, and meat quality

Creator:

Srinivasan, Haribaskar

Abstract:

Callipyge (CLPG, n=16) and normal (N, n=11) lambs were produced from Polypay dams and Dorset sires heterozygous for the CLPG gene to study the effects of the gene on growth and carcass and meat quality parameters. CLPG lambs had higher average daily gain than N lambs (0.26 vs 0.23 kg/day,...

Resource Type:

Masters Thesis
Effects of sheep grazing to control weeds in a pine plantation on weed reproductive success, trees and sheep performance

Creator:

Milliman, Lisa J.

Abstract:

Use of sheep to control weeds in a ryegrass-white clover pasture in which Knob Cone-Monterrey hybrid pine trees had been planted was investigated in Corvallis, Oregon during 1997-1998. Treatments consisted of an ungrazed control (C) and grazing applications to achieve 25 (L), 50 (M) or 75 (H) percent utilization of...

Resource Type:

Masters Thesis
Effects of genotype, nutrition, and progesterone on uterine efficiency in the ewe

Creator:

Fackrell, Bronwyn B.

Abstract:

Embryonic loss of potential lambs resulting in partial failure of multiple ovulations is a significant factor in the reproductive rate of prolific breeds. The roles of genetic and nutritional variation (and their possible interaction) on embryonic loss were studied by mating blackface and whiteface ewes of either high or low...

Resource Type:

Masters Thesis

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Academic Affiliation

Animal Sciences10
College of Agricultural Sciences1

Advisor

Meyer, Howard H.12

Commencement Year

Commencement Year range begin – Commencement Year range end

Current results range from 1986 to 2011

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Committee Member

Banks, Michael1
Boudry, Pierre1
Clark, Deborah1
Hohenboken, William1
Holmes, ZoeAnn1
more Committee Members »

Creator

Arnold, Andrew M.1
Fackrell, Bronwyn B.1
Khan, Khalidullah1
Lewis, Robert David1
Matson, Sean Erik1
more Creators »

Date

Date range begin – Date range end

Current results range from 1985 to 2010

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Decade

2010-20191
2000-20092
1990-19995
1980-19894

Degree Field

Animal Science10
BioResource Research1
Genetics1

Degree Level

Master's7
Doctoral4
Bachelor's1

Degree Name

Master of Science (M.S.)7
Doctor of Philosophy (Ph.D.)4
Bachelor of Science (B.S.)1

File Format

application/pdf1
application/vnd.ms-powerpoint1

Language

English [eng][remove]12

License

All rights reserved2

Non-Academic Affiliation

Oregon State University. Graduate School11
Oregon State University. Bioresource Research1

Peer Reviewed

No11

Resource Type

Masters Thesis7
Dissertation4
Presentation1
Undergraduate Thesis1

Rights Statement

Copyright Not Evaluated10
In Copyright2

Subject

Grazing2
Lambs -- Carcasses2
Lambs -- Growth2
Sheep -- Feeding and feeds2
Sheep -- Reproduction2
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