منابع مشابه
Livestock Breeding at the Crossroads
IN THE belief that the time is ripe for a thorough reexamination of present methods and results in livestock breeding, this introductory article endeavors to present a summary of the general situation. Even though they are presented with a due realization of their tentative nature, some of the conclusions will be considered debatable. It is hoped, however, that they will arouse active and thoug...
متن کاملPopulation genetics: Coalescence theory II
The coalescent is an accumulation of waiting times. We can think of it as standard queuing process where the times are exponentially distributed with rate k(k − 1)/(2 × 2N) [for most elaboration in this chapter I use the Wright-Fisher model as a guide, for the Moran model the rate would be k(k−1)/(2× (2N)2) ]. The coalescent makes no assumptions about the interaction of the intervals, we will a...
متن کاملPopulation genetics: Coalescence theory I
To understand inferences based on sampling random relationships among a small sample of individuals of a contemporary population we need to know some basic models of population history. Several such models exist. Fisher (1929, and 1930) and Wright (1931) developed independently a simple population model. We call this model the Wright-Fisher population model. Alternatives are the Moran model, de...
متن کاملGenotype by environment interaction and breeding for robustness in livestock
The increasing size of the human population is projected to result in an increase in meat consumption. However, at the same time, the dominant position of meat as the center of meals is on the decline. Modern objections to the consumption of meat include public concerns with animal welfare in livestock production systems. Animal breeding practices have become part of the debate since it became ...
متن کاملData recording and profitability in livestock breeding: Lessons from poultry breeding
The goal of any livestock breeding programme is to earn a return on investment and help their clients be more profitable. Success depends on efficiency of the breeding programme and its ability to supply genetically superior stock on a continuous basis to customers. To make this work availability of accurate information for making timely breeding decisions is key. Data collection and analysis i...
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ژورنال
عنوان ژورنال: Journal of Animal Breeding and Genetics
سال: 2012
ISSN: 0931-2668
DOI: 10.1111/j.1439-0388.2012.01016.x