The aim of this literature review is to give an overview of the differences between pure- and crossbreeding systems. Crossbreeding is a mating system with individuals of different lines or breeds. It is one of several breeding strategies in dairy production used to increase the economic profit. The use of crossbreeding increases due to changes in the dairy market and an increase of inbreeding among purebred Holstein. The main benefit of crossbreeding is heterosis, which is the improvement in genetic level in a hybrid offspring above the average of the parent breeds.

ABSTRACT. Mastitis is one of the most common diseases affecting dairy cows worldwide. In Sweden annu-ally about 60% of the dairy cows get infected and Staphylococcus aureus cause approximately 30% of these infections. Mastitis causes enormous economic losses. In Sweden, the costs to cure mastitis are estimated to be 192 million SEK per year, excluding the costs for mastitis prevention.

Sweden signed, in 1992, the Convention on Biological Diversity (CBD) and has thus assumed responsibility for the indigenous biodiversity. That also means that Sweden has a conservation responsibility for the Swedish Friesian (SLB) (SJV, 2007a). In a survey conducted by the Board of Agriculture (SJV) in 1996, it appeared that there were around 780 cows and heifers of the SLB breed (SJV, 1997). SJV did in 2006 a plan for the development of livestock genet-ic resources and the number of cows of SLB was estimated at approximately 200. This meant that the SLB was in need of being conserved and SJV assumed it would be categorized as threatened.The primary objective of conservation of a breed is to reduce the loss of the original genetic variation (Lacy et al., 1995).

The concept of Enterprise Architecture (EA) has become increasingly common within enterprises today and aims to describe an enterprise?s structure in a standardized way. Implementing EA within an enterprise is a way to describe the how various domains affect each other and by defining uniform procedures and guidelines, particularly in the link between IT-activities and business activities, you can streamline you enterprise. An effective EA is a huge asset for an enterprise since it enables the full usage of the business potential of the IT-domain. However a malfunctioning EA can lead to an enormous drain of valuable organizational resources.

Sweden signed, in 1992, the Convention on Biological Diversity (CBD) and has thus assumed responsibility for the indigenous biodiversity. That also means that Sweden has a conservation responsibility for the Swedish Friesian (SLB) (SJV, 2007a). In a survey conducted by the Board of Agriculture (SJV) in 1996, it appeared that there were around 780 cows and heifers of the SLB breed (SJV, 1997). SJV did in 2006 a plan for the development of livestock genet-ic resources and the number of cows of SLB was estimated at approximately 200. This meant that the SLB was in need of being conserved and SJV assumed it would be categorized as threatened.The primary objective of conservation of a breed is to reduce the loss of the original genetic variation (Lacy et al., 1995).

This literature review summarizes available data on infection with the parasitic roundworm, Ascaridia galli, as a cause of disease in poultry, including the consequences of a conversion to alternative production systems. Ascaridia galli has a direct life cycle with resistant eggs that survive and are easily spread in the environment, especially in systems with bedding materials where the faecal contact is high. The infection is usually subclinical but depending on the infection dose, the symptoms range from weight loss and diarrhea to mortality. Factors such as the feed composition and genetic variation among different hybrids clearly affect the establishment rate of the infection. Ascaridia galli will probably become an increasing problem, with a shift from the traditional battery cages to alternative systems where the risk of re-infection is high.

AbstractTitle: The debut of gluten ? Does timing of gluten introduction affect the risk ofceliac disease in high-risk children?Author: Sandra Hagwall Frohm and Maria IngmarSupervisor: Frode SlindeExaminer: Mette AxelsenProgramme: Programme in dietetics, 180/240 ECTSType of paper: Bachelor?s thesis in clinical nutrition, 15 hpDate: May 26, 2015Background: Celiac disease is a chronic disease in which the intestinal mucosa is damaged bygluten exposure, and the only treatment is a lifelong gluten-free diet. The disease affects about1 % of the population worldwide, but the majority are undiagnosed. Ingestion of gluten and thegenotype HLA-DQ2/8 are required for disease development, although additional genetic andenvironmental factors are believed to be of importance. One hypothesis is that timing of glutenintroduction in infants affects the disease risk.

The purpose of this essay is to discuss the base of sociology from an existentialistic perspective. The discussion takes it's position in the debate on the crisis of sociology, and aligns with Alvin Gouldner's understanding of the crisis. Gouldner believed that the crisis of sociology was mirrored in a sociological method that failed to describe the social reality that it meant to describe; a lack in self-criticism and self-reflexivity, a lack in self-containment in relation to state interests and a lack in moral engagement. This raises a number of questions, which I discuss in the essay. What is the role of sociology in our society? How shall we form a method that responds to the social reality that we sociologists aim to describe? How can we make sociology more moral?Existentialism offers a starting point to describe these questions.

The aim of the thesis is twofold: the first aim is to identify a number of reproductive logics that are used to construct Swedish regulation of embryo donation for reproductive use as either ethical or unethical in the governmental ? and medical discussions ? and to examine how these logics are interconnected with notions of gender and parenthood. The second aim is to identify a number of tensions that arise in the application of the governmental ethical logic on the embryo and embryo donation and discuss how these tensions can be solved with a feminist material approach. I argue that the terminology used to distinguish between genetic, biological, social and legal parenthood in my material is insufficient for understanding the value of the embryo outside its pre-human status. I therefore argue for an embryonic feminist bioethics that is attentive to the embryos post-human status, and for a reformulation of the parenthood terminology in line with what I call ?reproductive ties?..

It is mainly high levels of androstenone and skatole in adipose tissue that is the reason behind boar-taint, which is an unpleasant odor and taste from the meat of adult male boars. The purpose of this literature study is to provide an overview of current knowledge about the physioloical functioning of androstenone. There are several studies showing androstenone´s function as a pheromone, and that it is an important part of communication and mating behavior between pigs. Androstenone is produced in the testes of the boar and transported via the bloodstream to the salivary glands where it is excreted with the saliva. Sows sense the pheromone, not via the vomeronasal organ as previously considered, but via the olfactory mucosa.

I uppsatsen undersöks bildens betydelse för den svenska utvandringen till Amerika vid 1900-talets början. Utgångspunkten är i Västernorrland och en analys av Örnsköldsviks Allehanda,Allers Familj-Journal och Hvita Stjern-Liniens rederibroschyr. Under antagandet att varjebild fick ett större nyhetsvärde i en mer bildfattig kultur än den vi har idag och sparades underen längre tid är syftet att undersöka den blivande emigrantens bildvärld och världsbild. Frågorsom behandlas är: I vilket källmaterial förekom bilder, vilken funktion fyllde de och vilkenkunskap om Amerika kan den blivande emigranten tänkas ha haft? Vidare behandlasemigrantens bildbiografi, emigrationsbildens ontologi och bilden som emigrationspåverkandefaktor.

Dairy farmers using artificial insemination (AI) are dependent on effective oestrus detection. In Sweden, AI is used for a majority of all dairy cows and oestrus synchronisation with hormones is not allowed. There are reports of declining ability to express oestrus with higher levels of milk production. This makes oestrus detection more difficult. Several aids for oestrus detection have been developed, for instance pedometers and mounting detectors.

Actors deliberately change their preferences, contrary to the assumptions of rational decision models. This study shows why, and to some extent how. Preferences are necessarily ambiguous and unstable. Rationality is a regulating myth which has had a profound influence on Western conceptions of what an actor is.The aim of this study is to help individual actors understand the theoretical grounds of their actions. The analysis provides tools for examining decision methods and preference changes.

In schools, misconceptions about genetics can arise due to several factors, and the consequences of these misunderstandings can be significant. Lack of education can play a central role in the spread of misinformation about genetics. When teachers lack sufficient knowledge or do not have access to up-to-date resources, they risk inadvertently conveying inaccuracies to students. Additionally, students own preconceived notions and misinterpretations can be reinforced through interaction with their peers, creating a vicious cycle of misinformation. In this study, various misconceptions within genetics education have been identified and analyzed, while different strategies to prevent these misconceptions have been examined. The study revealed that the two most common misconceptions are the confusion between "genes" and "DNA" and the simplified perception of genetic determinism.

Detta arbete undersöker användningen av evolutionära algoritmer för framtagning och utvärdering av byggordningar i RTS-spel. Syftet var att undersöka om just evolutionära tekniker kan uppnå lika bra resultat som skriptade byggordningar då evolutionära tekniker oftast är billigare att utveckla.För att undersöka denna problemställning utvecklades en applikation med en experimentmiljö och en Artificiell Intelligens (AI) med evolutionär algoritm. Denna applikation och AI användes sedan för utvärdering av framtagna byggordningar.Resultatet antyder att evolutionära tekniker kan uppnå lika bra kvalitet som de skriptade byggordningarna.Något som krävs i detta arbete är fördefinierade skript för byggordningar för att köra evolutionen men något som skulle vara intressant att kolla på är coevolution. Med coevolution hade det varit möjligt evolvera fram byggordningar utan dessa färdiga skript genom att köra evolutionen mot individer i samma population..