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Full-Text Articles in Life Sciences
Evaluation Of Gene Expression In Pigs Selected For Enhanced Reproduction Using Differential Display Pcr: Ii. Anterior Pituitary, G. R. Bertani, C. D. Gladney, R. K. Johnson, Daniel Pomp
Evaluation Of Gene Expression In Pigs Selected For Enhanced Reproduction Using Differential Display Pcr: Ii. Anterior Pituitary, G. R. Bertani, C. D. Gladney, R. K. Johnson, Daniel Pomp
Department of Animal Science: Faculty Publications
The objective of this study was to identify differentially expressed genes in the anterior pituitary (AP) of sows selected for enhanced reproductive phenotypes. Selection in the Index (I) line was based on an index of ovulation rate and embryo survival, whereas random selection was used in the Control (C) line. Average numbers of fully formed piglets at birth were 12.5 ± 1.5 and 9.9 ± 2.0 for Line I and C sows used in this study, respectively. In order to induce luteolysis and synchronize follicle development, sows were injected (i.m.) with 2 mL of prostaglandin F2α analog between d …
Effect Of Food Availability On Reproduction And Brood Size In A Freshwater Brooding Bivalve, Mark Beekey, Ronald H. Karlson
Effect Of Food Availability On Reproduction And Brood Size In A Freshwater Brooding Bivalve, Mark Beekey, Ronald H. Karlson
Biology Faculty Publications
Brood size is often constrained by the amount of energy available to produce offspring. Yet, energetic constraints may not be as important if the physical capacity to brood offspring is limited. Investigating the relative importance of energetic and physical constraints on brood size is necessary to understand how reproductive strategies are molded by natural selection. We investigated how food availability affects brood size in Sphaerium striatinum, a freshwater bivalve. We reared juveniles to adulthood under three food levels in a common garden experiment. The number of reproductive attempts, brood size, and stage of offspring development were measured. Clams reared …
The Evolution Of Social And Reproductive Monogamy In Peromyscus, Evidence From Peromyscus Californicus (The California Mouse), David O. Ribble
The Evolution Of Social And Reproductive Monogamy In Peromyscus, Evidence From Peromyscus Californicus (The California Mouse), David O. Ribble
Biology Faculty Research
The genus Peromyscus (deer mice) is an attractive group in which to study the evolution of social and mating behaviours. This genus includes over 50 species (Carleton, 1989) that are widely distributed across North and Central America from coast to coast and from the northern subarctic to Panama (Kirkland & Layne, 1989). The diversity in body sizes among Peromyscus ranges from 13 to 77 g (Millar, 1989) and exceeds that of most other genera. Phylogenetic relationships among species of Peromyscus are relatively well understood (Stangl & Baker, 1984), although the systematics of Peromyscus is an active area of study (e.g., …
Ec03-219 2003 Nebraska Swine Report, Duane Reese
Ec03-219 2003 Nebraska Swine Report, Duane Reese
University of Nebraska-Lincoln Extension: Historical Materials
The 2003 Nebraska Swine Report was prepared by the staff in Animal Science and cooperating Departments for use in Extension, Teaching and Research programs. This publications deals with research on swine reproduction, breeding, health, nutrition, economics, and housing.
2003 Nebraska Swine Report, Duane E. Reese
2003 Nebraska Swine Report, Duane E. Reese
University of Nebraska-Lincoln Extension: Historical Materials
This publication was prepared by the staff in Animal Science and cooperating Departments for use in Extension, Teaching and Research programs. It deals with the results that were done in reproduction, breeding, health, genetics, nutrition, economics and housing of swine.