I. The Effects of Sire Breed, Forage Availability and Weather on the
Grazing Behavior of Crossbred Ewes.
Thirty nonpregnant, nonlactating crossbred ewes, six per sire
breed (Suffolk, Clun Forest, Dorset, Polypay and Border Leicester),
were observed grazing together in a 0.87 ha grass-clover pasture for
six days over a two-week...
The LifeKnowledge curriculum is a recent initiative of the National FFA Organization to develop key learning precepts in agriculture education students. This material utilizes cutting-edge teaching techniques in lesson plans designed to develop leadership, teamwork, personal development, and communication abilities in students. This project surveyed current agriculture teachers in Oregon...
During years 2005, 2006, and 2007 ewes of predominantly Polypay breeding were bred to either Dorper or Polypay rams for spring lambing. Ewes were assigned to single-sire mating groups based on age and genotype. Internally generated replacements were added to the flock for the 2007 lambing season and bred to...
Data were taken from 47 animals consisting of five
breeds: Border Cheviot, Columbia, Dorset Horn, Suffolk,
and Willamette. Both sexes were represented in each breed,
although in unequal numbers. The pituitaries were assayed
for gonadotropic and thyrotropic hormone content by injecting
a suspension of the macerated gland in saline into...
The purpose of this study is to research people’s attitudes towards pit bull breeds compared to other dog breeds. The term “pit bull” refers to a type of dog with certain physical features including a muscular and stocky build, short coats, and a large skull with a square jaw. Over...
In two breeding experiments, straightbred and crossbred rabbits were evaluated for performance characters relating to reproduction, disease resistance, growth and carcass quality. In the first experiment,
New Zealand White CNN) and Flemish Giant (FG) straightbreds and FG sire x (Florida White-New Zealand White dam) terminal-crossbreds (TX) were involved. Reproductive performance...
One thousand twenty-three lambing records of 351 ewes bred in a
rotational crossbreeding system involving Columbia or Targhee,
Hampshire and Finnish Landrace breeds were examined. A regression
approach was used to determine the effects of breeds and heterosis on
wool grade, greasy fleece weight, ewe weight at lambing, lambing date,...
An experiment was conducted to determine the effect of dietary copper (Cu)
on Cu status and lipid metabolism in Holstein and Jersey cattle. Eight Jersey and8
Holstein cows in mid-lactation were blocked by days in milk (169 ± 37) and
assigned at random to one of two diets. Cows received...
This study examined the effects of sire breed and
weight on the performance of 117 crossbred wether lambs
born at the Oregon State University Agricultural
Experiment Station, Corvallis. Lambs were produced by
mating Clun Forest,Polypay, Dorset, Border Leicester, and
Suffolk sires to Columbia-type ewes. After weaning at
approximately 90 days...
During early embryonic development, endodermal cells leave the inner cell mass (ICM) and migrate over an extracellular matrix (ECM), located on the blastocoelic side of the trophectoderm, to form a continuous layer of extraembryonic endoderm. Cell migration events depend on a family of cell surface proteins known as integrins that...
