Serum samples were collected between 24 and 48 h of age
from 408 Hereford calves of a selection experiment and from 200
Angus, Hereford and Red Poll calves of another experimental
population (Germ Plasm Utilization project). Concentrations of
Immunoglobulin G₁ (IgG₁) were determined by single radial
immunodiffusion. Breed or selection...
Thirty-seven Yorkshire sows were bred to one of six boars; 34 of the sows were verified pregnant at 42 d of gestation. These sows were innoculated with ovine serum albumin (OSA) in Freunds' complete adjuvant at 65 d and later given a second injection in Freunds.' incomplete adjuvant 93 d....
As ocean ecosystems continue to deteriorate in the face of human induced pressures, marine management professionals are increasingly being urged to predict the impacts of various activities on ocean ecosystems. Many ecosystem interactions are still not adequately understood, so managers often turn to scientists to provide data and analysis on...
Various aspects of the biology of the woolly pear aphid
Eriosoma pyricola were studied in order to further understand its annual
cycle. It was already known that. E. pyricola produces alate sexuparae
in response to the onset of dormancy in its secondary host, a pear.
This study of E. pyricola...
Concern over the low enrollment in homemaking classes prompted this study of the homemaking program in secondary schools in Bend, Oregon. Two questionnaires were constructed to obtain the opinions and beliefs of ninth, tenth, and eleventh-grade girls in Bend, Oregon, and their parents about the following: 1. What factors influence...