An experiment was conducted to determine the
suitability of a new variety of yellow pea (Pisum sativum
L., var. Miranda) as a feed ingredient in broiler breeder
diets. Two-hundred twenty-five I S A Vedette dwarf broiler
breeder pullets were fed either a corn-soy (CS) or corn-pea
(CP) diet from day...
Cholesterol, C₂₇H₄₅OH, as a precursor of steroid hormones, and
the genetic implications of a divergent selection program for blood
cholesterol levels provided the purpose of this study.
The initial selection of Japanese Quail for the development of
high and low blood cholesterol lines was from a randomly mated
population of...
A population of Wrolstad strain Medium White turkeys has been divergently selected for low and high mean semen volume for 13 generations. A mean volume difference of .34 mis. was obtained in the 13th generation; with the low line averaging .21 mis. and the high .55 mis. Heritability estimates determined...
Two experiments were conducted to try and
differentiate variations in the levels of total plasma
protein and plasma protein fractions from three lines of
turkeys, each with distinct muscle morphological
characteristics--Deep Pectoral Myopathy (DPM), Hereditary
Muscular Dystrophy (MDY), and a Broad Breasted Bronze
control (J).
Ten day old poults from...
Two experiments were conducted to determine the
effects of riboflavin and pantothenic acid deficiency
on the production of clubbed down embryos in Single
Combed White Leghorn (SCWL) and Rhode Island Red (RIR)
hens.
In experiment 1, sixteen SCWL and eight RIR hens
were assigned to one of four diets calculated...
An experiment was conducted to evaluate a breeder diet
containing a yeast culture as a means of improving the
reproductive performance of two genetically dissimilar lines
of turkey hens (designated as L and H). Two hundred hens of
lines L and H, 100 hens per line, were housed in a...
A study was conducted to investigate if morphometric facial measurements could be utilized to differentiate five categorical performance types of Quarter Horses. The five categories being Western, Halter, English, Reining, and Cutting. The measurements were collected from 323 registered Quarter Horses representing animals who ranged in age from one year...
The concept of genetic penetrance, "the frequency of manifestation of a genetic factor," was introduced by Timofeef-Ressovsky (Naturwissenschaften 19:493,1931). Incomplete penetrance has been used to explain the absence of phenotypic expression when otherwise anticipated. Studies of Embryonic Chick Edema, ECE (Poultry Sci. 77(suppl. 1):69, 1998) have been conducted in order...
A genetic selection study to determine the effects on egg hatchability and subsequent chick performance of Japanese quail (Coturnix japonica) eggs incubated at 100 F dry bulb temperature (Control, Line C) when compared to other eggs incubated at 102 F (Selected, Line S) was conducted over 10 consecutive generations. Eggs...
Hatchability of the fertilized avian egg is impacted by factors which can be
categorized as being either genetic or environmental in nature. An elevated
incubation temperature, > 100 F reduces development time (time, days to hatch),
but increases embryonic mortality and lowers the numbers of fertile eggs that will
hatch....