15 uppsatser
… of this have been in-creasing in dairy cattle breeding lately. Increased longevity contribute to an increased pro-portion of cows that produce milk in more productive lactations and reduces the replace-ment costs together with a good health and fertility. Unfortunately it is …
… of this literature study was to investigate the possibilities to improve longevity and stayability of beef cattle with breeding. The breeding goal for beef breeds is to produce animals with high capacity for growth and good feed efficiency. Longevity and sustainability are two …
Few scientific studies have studied the subject of longevity among horses over a longer period of time. The knowledge about the Swedish riding school horse population concerning injuries and diseases is insufficient. Generally speaking, riding school horses in Sweden have a more …
… factors are thought to influence the reproductive performance as well as the longevity of the sow. However, it is not well studied in which way these factors act. This thesis aims to find relationships between rearing factors and the performance of sows, so that a suitable way …
a case study in tributaries to river Vindelälven, northern Sweden
… compared to pebbles deployed in the middle of the stream could be proven. A longevity model, based only on the bed erosion caused by female digging activity, suggests that a spawning bed have a lifespan in the range of 13 to 35 years, depending on gravel depth. The prediction …
… afterwards, contains weight and age at the first insemination and at calving, longevity, leg- and hoof health, calving problems and milk yield in the first lactation. Statistical analysis was performed on the data, with the exception of health data which has been presented as …
… body posture and claw conformation reflect important qualities for their longevity. In spite of good values for fertility, it has been noticed in the last years that the fertility results and longevity have been unsatisfactory and claw and/or bone disorders have been suspected …
… Two studies were carried out in this thesis. In the first study the storage longevity of seeds treated with aerated steam was examined. The second study investigated the shelf-life of the pre-tests used to determine the aerated steam treatment tolerance of a seed lot, by testing …
Levnadsrisk utifrån Lee-Cartermodellen
Under det gångna århundradet ökade den förväntade livslängden avsevärt såväl i Sverige som i övriga världen. 1900-talets förbättrade livslängd drevs inledningsvis av en minskad barnadödlighet medan de senare årtiondena kännetecknades av minskad dödlighet i höga åldrar. En …
… motheringabilities, strong legs, good meat quality, good sow durability and longevity, capacity to eatmuch roughage and dark skin color. There are however still many ways of improving theorganic population of pigs to make them more adjusted to the organic environment; forexample …
… motheringabilities, strong legs, good meat quality, good sow durability and longevity, capacity to eatmuch roughage and dark skin color. There are however still many ways of improving theorganic population of pigs to make them more adjusted to the organic environment; forexample …
… hormone has been proposed for determining the young animal’s reproductive longevity. Progesterone, BHB and urea are used as indicators already today. According to this study some metabolites and hormones are more useful as indicators than others. BHB can be used as an indicator …
Över 90 % av betäckningarna inom Avelsföreningen för svenska varmblodiga hästen (ASVH) skedde med artificiell insemination (AI) år 2011. AI har många fördelar i avelsarbetet då hingsten inte behöver vara på plats när stoet brunstar, möjligheten att välja bland både nationella …
… values, it is suggested to include new recordings, such as temperament, longevity and fertility, since it would capture the interests of the farmers and their breeding goals better. By including temperament during handling and aggressive behaviour around calving in the genetic …
Autonomi och repression som förklaringar till regimskillnader i förväntad livslängd
During the last decade a number of studies have been published that investigate how the most fundamental aspect of political organization, the regime type, affects population health. The results unanimously show that citizens of democracies live longer and healthier lives than …
