https://phys.org/ en-us Latest news from Norwegian School of Veterinary Science In her doctoral project, Signe Lovise Thingnes (Norwegian School of Veterinary Science/Norsvin business PhD candidate) used three different methodological approaches in order to investigate how gilts and sows are affected by feed and feed strategy during the breeding, gestation and lactation period. A higher energy content in the feed given to sows in the breeding period and parts of the first pregnancy was shown to give extra body reserves at the onset of breeding and to have a positive effect on life-span and production. During the lactation period, when good feed intake is important for minimising weight loss and loss of condition, free access to feed increased the risk of the sows losing their appetite. The use of pea starch in feed given to lactating sows proved to have a positive effect on the sows' feed intake and condition at the weaning stage. https://phys.org/news/2013-12-choice-strategies-important-effects-gilt.html Other Tue, 17 Dec 2013 10:20:01 EST news306494944 Gill diseases in salmon farmed at sea lead to huge losses in some years and occur particularly in the autumn in salmon that has been released into the sea in the spring. Agnar Kvellestad's PhD thesis shows how several different causes play a role in the development of these diseases. https://phys.org/news/2013-12-gill-diseases-seawater-farmed-salmon-multiple.html Ecology Mon, 16 Dec 2013 07:51:29 EST news306402669 A PhD project carried out at the Norwegian School of Veterinary Science has studied immunity to IPN in salmon by using different injected vaccines. The study focused particularly on the identification of biological markers as a measure of immunity to IPN. https://phys.org/news/2013-12-immunity-biomarkers-infection.html Ecology Thu, 12 Dec 2013 10:15:36 EST news306065717 A PhD project carried out at the Norwegian School of Veterinary Science in collaboration with the Institute of Marine Research has investigated the use of sterile salmon in aquaculture as a means to prevent escaped farmed salmon interbreeding with wild salmon. The study used a method known as triploidy to induce sterility in Atlantic salmon. The results suggest that in order to successfully integrate triploid salmon into the industry, some modifications are required to the current protocols used today to prevent heart and skeletal deformities. https://phys.org/news/2013-12-sterile-salmon-environmental-impact-farm.html Ecology Tue, 10 Dec 2013 12:40:04 EST news305899605 Mammary tumours (breast cancer) are the most common form of cancer in bitches. Kaja Sverdrup Borge's PhD project has led to the identification of genetic changes associated with these types of tumour. Her findings can help to improve our understanding of the development of breast cancer in both dogs and humans. https://phys.org/news/2013-12-genetic-mammary-tumours-breast-cancer.html Plants & Animals Mon, 09 Dec 2013 09:00:06 EST news305798757 Edwardsiella tarda is a bacterium that can infect a number of animal species and also humans. Edwardsiellosis is one of the most serious systemic bacterial diseases in fish, resulting in substantial losses in the fish farming industry all over the world. https://phys.org/news/2013-12-genetic-divergence-fish-pathogens.html Ecology Thu, 05 Dec 2013 10:10:04 EST news305459191 A PhD research project at the Norwegian School of Veterinary Science has provided essential knowledge about the mechanisms leading to feed-induced enteritis in salmon and also insight into the salmon's intestinal immune defence system. https://phys.org/news/2013-12-salmon-sensitive-intestines-smolt.html Ecology Mon, 02 Dec 2013 07:54:48 EST news305193271 Gelagay Ayelet Melesse's doctoral research reveals that there are several serotypes of the virus causing foot-and-mouth disease (FMD) and the African horse sickness virus (AHSV) and several different hosts for these viruses in Ethiopia. https://phys.org/news/2013-11-combating-key-viral-diseases-livestock.html Other Wed, 13 Nov 2013 09:20:01 EST news303554740 Respiratory diseases in cattle are a great threat to animal welfare and lead to financial losses in the cattle industry. The bovine respiratory syncytial virus (BRSV) is one of the main causes of respiratory disease in cattle. A study of the prevalence and infection distribution of the virus shows that it is possible to control the virus, even though it occurs very frequently. https://phys.org/news/2013-11-prevalence-colds-pneumonia-cows.html Plants & Animals Tue, 05 Nov 2013 17:30:01 EST news302893901 Mould species of the genera Fusarium and Altenaria are considered the most important threats to Norwegian grain cereals because they produce toxins which can be a potential risk to food safety. https://phys.org/news/2013-10-biological-biotransformation-enniatins-fusarium-fungi.html Ecology Wed, 30 Oct 2013 09:00:02 EDT news302339958 Anne Stene's PhD thesis explains how environmental factors affect the outbreak and transmission of pancreas disease (PD) in farmed salmon. https://phys.org/news/2013-10-surface-key-factor-transmission-pancreas.html Ecology Tue, 29 Oct 2013 08:08:55 EDT news302252885 A PhD project carried out at the Norwegian School of Veterinary Science has examined the unwanted discoloration, or melanin "black spots", of muscle fillets from farmed salmon. https://phys.org/news/2013-10-melanin-pigmentation-salmon-filletscauses-factors.html Ecology Wed, 23 Oct 2013 09:00:01 EDT news301735967 Kassahun Wondim's PhD research shows that the protozoan parasite, N. caninum, is a more frequent cause of miscarriage and stillbirth in intensive and semi-intensive dairy production in Ethiopia than the BVD virus and the Brucella bacterium. https://phys.org/news/2013-10-neospora-caninum-underestimated-reproductive-disorders.html Other Mon, 21 Oct 2013 07:51:49 EDT news301560698 A doctoral research project studying the bacterium Brucella pinnipedialis, which commonly occurs in hooded seals, found that this bacterium does not cause disease in hooded seals, as other Brucella bacteria do in other species. https://phys.org/news/2013-10-bacterium-brucella-pinnipedialis-effect-health.html Ecology Tue, 08 Oct 2013 08:41:28 EDT news300440466 Disease is one of the most challenging issues facing the Norwegian fish farming industry today. Infectious diseases caused by bacteria, viruses or parasites impair fish welfare, lead to profit losses and can potentially also have negative consequences for https://phys.org/news/2013-09-disease-norwegian-salmon-aquaculture-emphasis.html Ecology Thu, 12 Sep 2013 10:20:01 EDT news298197615 Ducks and gulls are the natural hosts of influenza A virus. Ragnhild Tønnessen's PhD research project has characterised influenza A viruses in gulls and ducks in Norway. https://phys.org/news/2013-09-influenza-virus-wild-birds-norway.html Plants & Animals Thu, 12 Sep 2013 09:34:13 EDT news298197243 (Medical Xpress)—Eric Strand's doctoral research shows that these genetically distinct breeds are predisposed to different types of upper airway problems, and this indicates that certain physical traits can be the cause of different forms of collapse in the upper respiratory tract. Strand has also developed and standardised a new diagnostic treadmill protocol for disorders of this kind, which has resulted in more accurate diagnosis and the discovery of new disorders. https://medicalxpress.com/news/2013-06-dynamic-disorders-upper-respiratory-tract.html Diseases, Conditions, Syndromes Fri, 28 Jun 2013 10:30:05 EDT news291632805 Leon Cantas' doctoral research shows that the immune response of the host to a bacterial infection may have a significant effect on the development of bacteria's resistance to antibiotics. https://phys.org/news/2013-06-antibiotic-treatments-impact-resistant-bacteria.html Cell & Microbiology Tue, 18 Jun 2013 08:35:08 EDT news290763296 A high moose population density and mild autumn weather result in a higher prevalence of deer keds (louse fly parasite). A great deal of pine forest in the habitat of the moose has the same effect. These are the results of new research into how deer keds are spreading in Southeast Norway. The findings of this PhD project can be used to limit the damaging effects of the parasite in the Norwegian landscape. https://phys.org/news/2013-06-blood-sucking-deer-keds-norway.html Ecology Tue, 11 Jun 2013 09:03:40 EDT news290160213 How are human and animal diseases in general affected by the climate becoming "wilder, wetter and warmer"? Solveig Jore's doctoral research shows that the tick Ixodes ricinus has spread over larger geographical areas in Norway and that climate and environmental changes, access to host animals and demography affect tick distribution in Norway. Furthermore, local climatic conditions can have a decisive influence on the ability of the tick to spread dangerous viruses. The climate can also play a role in the spread of gastrointestinal infections. https://medicalxpress.com/news/2013-04-climate-environmental-affect-occurrence-diseases.html Diseases, Conditions, Syndromes Mon, 15 Apr 2013 08:12:13 EDT news285232326 The stockperson is an important influence on farm animal welfare. In her PhD thesis, Karianne Muri has investigated some of the many ways in which stockpeople have an impact on the welfare of the animals under their care https://phys.org/news/2013-04-stockmanship-animal-welfare-norwegian-dairy.html Plants & Animals Thu, 11 Apr 2013 08:24:25 EDT news284887459 New research shows how the interaction between Atlantic salmon and the ISA virus leads to the development and spreading of the influenza-like disease ISA in fish. The new findings may be of interest to research on influenza generally. https://phys.org/news/2013-04-isa-virus-red-blood-cells.html Plants & Animals Wed, 10 Apr 2013 09:23:31 EDT news284804605 Feeding fish with plant-based raw materials has been shown to have a negative effect on Atlantic salmon's ability to digest fats. https://phys.org/news/2013-03-fatty-acid-protein-fabp2-atlantic.html Ecology Tue, 12 Mar 2013 09:22:07 EDT news282298917 FSH and LH are two important hormones which regulate the processes of puberty and maturation. These hormones are secreted by the pituitary gland and are transported in the blood to the genitalia, where they regulate maturation. https://medicalxpress.com/news/2013-02-puberty-maturation-cod.html Medical research Mon, 18 Feb 2013 08:50:01 EST news280399077 Mycobacteriosis in fish is a disease that is difficult to detect and therefore often underdiagnosed. For the same reason, information about the effects of this disease on the fish farming industry has been limited. https://phys.org/news/2013-01-mycobacteriosis-fish.html Ecology Tue, 15 Jan 2013 08:54:25 EST news277462457 Food poisoning caused by Bacillus cereus can lead to diarrhea which is probably caused by a 3-component toxin which is produced by this bacteria strain and which perforates and kills cells. https://phys.org/news/2013-01-toxin-bacillus-cereus-diarrhea.html Cell & Microbiology Fri, 04 Jan 2013 10:00:01 EST news276515384 Stress affects the congenital immune defence system. New doctoral research has revealed how stress can lower the immunity of salmon and increase its susceptibility to viral infection. https://phys.org/news/2013-01-effect-stress-atlantic-salmon-congenital.html Ecology Wed, 02 Jan 2013 14:51:00 EST news276360652 Changes in the breeding of pigs over the last 20 years has led to the size of litters increasing by on average two piglets. https://phys.org/news/2012-12-stillbirth-neonatal-death-piglets.html Plants & Animals Wed, 19 Dec 2012 09:39:37 EST news275132369 Milk production is a major source of income for many farmers in Tanzania and therefore an important factor in combating poverty in the region. But the health and growth of the calves and the milk production rate is often poor. https://phys.org/news/2012-12-health-growth-calves-tanzanian-smallholder.html Other Thu, 13 Dec 2012 10:53:01 EST news274618367 Tanzania has many different and diverse wildlife populations spread across a network of protected areas extending over the whole country. https://phys.org/news/2012-12-illegal-serengeti-ecosystem-social-molecular.html Ecology Thu, 13 Dec 2012 08:43:50 EST news274610625