Duration of Fertility and Hatchability Following Natural Matings in Turkeys
نویسندگان
چکیده
منابع مشابه
Forced Matings in Natural Populations of Drosophila.
Forced mating has been reported for a number of vertebrate and invertebrate taxa. The implications of forced copulation for mating system evolution, however, has received the greatest consideration for birds (Gowaty and Buschhaus 1998). Insect species in which females mate before full maturation represent a different slant on forced mating. Some lepidoptera, for example, exhibit the unusual phe...
متن کاملDuration of fertility of turkeys inseminated at different times after the onset of photostimulation.
To investigate the relationship between photostimulation, ovary and oviduct weights, and oviductal sperm-storage tubule (SST) development and functional capacity, 33-week-old turkey hens were placed in four groups of 15 hens each. Each group was inseminated three times in 30 min with 50 x 10(6) spermatozoa (a total of 150 x 10(6) spermatozoa) on the day of photostimulation, or on Days 7, 14, or...
متن کاملSelection for increased mutation rates with fertility differences between matings.
Previous studies of mutation modification have considered models in which selection is a result of viability differences that are sex symmetric. The results of a numerical study of a model in which selection is a result of fertility differences between mated pairs demonstrate that the type of selection to which a population is subject can have a significant impact on the evolution of various pa...
متن کاملHatchability of chicken embryos following somite manipulation.
The avian embryo has been a classical model to study early development because the embryo is easily accessible for manipulation of embryonic cells and structures. The usefulness of the chicken embryo increased with the development of quail-chick transplantation techniques (1,2). The ability to transplant Japanese quail cells into a chicken embryo provides a method to trace the developmental fat...
متن کاملRalationship of Extrauterine Pregnancies with Fertility and the Following Pregnancies
Considering the increasing trend for ectopic pregnancies in the world and different reports on its complications and the fate of the following pregnancies, this study was performed to determine the relationship between these factors in referrals of the hospitals of Shaheed Beheshti University of Medical Sciences from 1991 to 1996. The cohort strategy of this research study was carried out on 2...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Poultry Science
سال: 1955
ISSN: 0032-5791
DOI: 10.3382/ps.0340228