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gruppstorlekens betydelse för grisars välfärd och produktionsresultat
… or psychological stress factors their immune system can be decreased and the growth can be impaired. Influence by the social status of the pigs is also reviewed. This literature study also investigates the impact of enriched environment, and concludes that both the welfare and …
tillåtet men inte accepterat av svensk kvarnindustri
Den förste juli 2011 beslutade Kemikalieinspektioen att godkänna användandet av det tillväxtreglerande preparatet Moddus 250 EC från Syngenta Crop Protecktion A/S i samtliga stråsädesgrödor. Detta var ett beslut som framkommit efter en dom i regeringsrätten den 22 september 2010 …
the world's invisible communities
… the world’s population has increased exponentially fast. The majority of this growth has been accommodated for by urbanization of the developing world. This in turn has lead to a wide spread of informal settlements. Thus, areas of urban slums, that have risen illegally on the …
Rapid population growth and the fact that phosphorous is a limited resource implies that the question regarding an efficient use of phosphorus is of great importance, and consequently,that the phosphorous use efficiency should be as high as possible. The view on phosphorous use …
… future life. Some studies show that castration increases the risk of tumor growth in the prostate and the presence of prostatic carcinoma. Paradoxically, other studies of diseases of the dog prostate in some cases can be prevented by castration, for example, prostate …
… In Ängersjön no sign of change in population structure has been observed. The growth in Fisksjön has changed, with a stunted population the perch was shorter than it is in giant-phase at the same age. The opposite pattern was found in Ängersjön. Age at maturity occurred at a …
… sjukdomen genom att påvisa höga nivåer av GH och/eller Insulin Like Growth Factor-I (IGF-I) i blodet. IGF-I är ett indirekt mått på GH då GH stimulerar produktionen av IGF-I. Inom humanmedicinen är den klassiska metoden att diagnostisera akromegali oralt glukostoleranstest …
… The question was whether this was indirect, i.e. due to changes to plant growth, or due to a particular nutrient in the fully fertilized treatment. This complementary study sought to identify whether any of the individual nutrient(s) in the fully fertilized treatment affected …
… positive to wild boars, probably because the species does not affect forest growth etc severely, and may even promote plant establishment by the rooting. Hunters were generally positive to the wild boar population. In general, most respondents welcome the wild boar in the …
Svansbitning är ett stort problem i slaktsvinsproduktionen ur såväl djurvälfärdsmässig som ekonomisk synvinkel. Etiologin bakom problemet anses vara multifaktoriell och är ej helt utredd. Man kan dela in faktorerna i interna riskfaktorer och externa riskfaktorer. De interna …
… test areas the survival has been very low. In the third area both survival and growth has been good and is growing in a similar way as the one in the south. This gives reason to believe that poplar has a good potential for producing biomass at a commercial level.
… The results showed that initial spacing has a major impact on volume growth, as well as various wood properties. The average volume of the densest spacing was 96 percent higher than in the most sparse spacing. The presence of different quality defects also varied significantly …
en modellsimulering av planteringsförbandets inverkan?
… on the theory that heartwood is formed by a fixed fraction of the annual growthring, 0,5 to 0,8 rings. To calculate heartwood volume modelings were carried out in four different pine stands with different spacings, 0,75, 1,25, 1,5 and three meters. The model indicates heartwood …
en jämförelse mellan opåverkad och lågintensivt brukad mark
… are adapted to bright and sparse forests on oligotrophic ground. Due to a slow growth rate and high light demand lichens will suffer from competition in eutrophic environments. Therefore, lichens have disappeared from managed forests where the forest industry has increased the …
… two locations with small plots. Edge effect probably has a great impact on the growth.
