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Genetic and phenotypic relationships among milk yield and somatic cell count before and after clinical mastitis.
- M. Koivula, E. Mäntysaari, E. Negussie, T. Serenius
- Biology, MedicineJournal of dairy science
- 1 February 2005
The results of this study support the use of SCC as an indicator of mastitis and a tool for selection for mastitis resistance and confirm the genetic antagonism between production and udder health traits.
Attraction of kestrels to vole scent marks visible in ultraviolet light
It is suggested that kestrels flying over an area can see and use vole scent marks to assess vole numbers, a novel explanation for how raptors detect patches of high vole densities without prior knowledge of local food resources.
Distribution of bacteria and seasonal and regional effects in a new database for mastitis pathogens in Finland
A database containing pathogen-specific information on mastitis has been established in Finland and pathogen information is primarily used for targeting the antimicrobial treatment of the cow, but also for designing specific mastitis control strategies for the herds.
Experimental tests of predation and food hypotheses for population cycles of voles
- T. Klemola, M. Koivula, E. Korpimäki, K. Norrdahl
- Environmental ScienceProceedings of the Royal Society of London…
- 22 February 2000
It is concluded that predation inhibits an increase in vole populations until predation pressure declines, thus maintaining the low phase of the cycle, but also that population cycles in voles are not primarily driven by plant–herbivore interactions.
COST OF REPRODUCTION IN THE WILD: MANIPULATION OF REPRODUCTIVE EFFORT IN THE BANK VOLE
Evidence is provided that, in the wild, females may be incapable of escaping the costs of reproduction and have been considered typical income breeders, in which potential reproductive costs may be masked.
Do scent marks increase predation risk of microtine rodents
The results suggest that odour of scentmarks may be a larger risk to voles than UV visibility of scent marks, and small mustelids were the mainpredators of voles.
Genetic parameters for test-day somatic cell count at different lactation stages of Finnish dairy cattle
WINTER FOOD SUPPLY LIMITS GROWTH OF NORTHERN VOLE POPULATIONS IN THE ABSENCE OF PREDATION
The results indicate that Microtus vole populations that have succeeded in escaping regulation by predators are limited in growth by a lack of winter food, suggesting this factor is a strong candidate for the direct density dependence inherently necessary for the occurrence of population cycles.
Effects of Phosphate and Light on Growth of and Bioactive Peptide Production by the Cyanobacterium Anabaena Strain 90 and Its Anabaenopeptilide Mutant
- S. Repka, M. Koivula, Vesa Harjunpä, L. Rouhiainen, K. Sivonen
- BiologyApplied and Environmental Microbiology
- 1 August 2004
Findings clearly indicate that these compounds may have some linked function in the producer organism, the nature of which remains to be discovered.
Across breed multi-trait random regression genomic predictions in the Nordic Red dairy cattle.
- M. Makgahlela, E. Mäntysaari, J. Juga
- Biology, MedicineJournal of animal breeding and genetics…
- 1 February 2013
Evaluating reliability of genomic predictions in selection candidates using multi-trait random regression model, which accounts for interactions between marker effects and breed of origin in the Nordic Red dairy cattle, found that the breed-specific model increased the reliability of DGV by 2 and 3% for milk and protein when compared to homogeneous population GBLUP.