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1
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Selected economic issues in the protection of biodiversity of farm animals

100%
Krawczyk J.
Economic and Regional Studies
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2018
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tom 11
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nr 3
Subject and purpose of work: The aim of this research was to determine changes in the population of native animal breeds and to indicate the importance of subsidies under agri-environmental programs. The study concerned the years 1999-2017. Materials and methods: The research was based on the documentation of the National Research Institute of Animal Production (PIB). An assessment of the population size of native animal breeds was carried out depending on the amount of subsidies from the national subsidy up to 2004 and from agri-environmental programs since 2005. Results: Since the integration of Poland with the European Union and the mobilization of funds from agri-environmental programs, a successive increase in the number of farm animals covered by the protection program has been noted. Conclusions: This investigation demonstrated a considerable, but not exclusive dependence of the dynamics of the growth of the livestock population covered by the protection program on the amount of subsidies for breeders. The preservation of EU subsidies through agri-environmental programs in the years to come is the basis for maintaining the upward trend in the abundance of native livestock populations. Also, a greater increase in the number of animals than in the number of new beneficiaries using agri-environmental programs was observed, and this is a situation conducive to breeding work. National surveys show that native breeds are a source of obtaining products with pro-health, regional and traditional properties, for which the demand is growing, and which can also help to protect the biodiversity of farm animals.
2
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The quality of eggs derived from Polbar and Greenleg partridge hens - Polish conservative breeds

100%
Kasperek K., Drabik K., Zieba G., Batkowska J.
Acta Scientiarum Polonorum. Zootechnica
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2023
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tom 22
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nr 1
3
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Comparable estimation of meat production of Lithuanian local and import intensive selection pigs

100%
Jukna V., Jukna C., Saikevicius K. J.
Polish Journal of Food and Nutrition Sciences
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2007
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tom 57
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nr 4[B]
4

Bayesian inference of genetic parameters for test-day milk yield, milk quality traits, and somatic cell score in Burlina cows

80%
Penasa M., Cecchinato A., Battagin M., De Marchi M., Pretto D., Cassandro M.
Journal of Applied Genetics
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2010
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tom 51
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nr 4
The aim of the study was to infer (co)variance components for daily milk yield, fat and protein contents, and somatic cell score (SCS) in Burlina cattle (a local breed in northeast Italy). Data consisted of 13 576 monthly test-day records of 666 cows (parities 1 to 8) collected in 10 herds between 1999 and 2009. Repeatability animal models were implemented using Bayesian methods. Flat priors were assumed for systematic effects of herd test date, days in milk, and parity, as well as for permanent environmental, genetic, and residual effects. On average, Burlina cows produced 17.0 kg of milk per day, with 3.66 and 3.33% of fat and protein, respectively, and 358 000 cells per mL of milk. Marginal posterior medians (highest posterior density of 95%) of heritability were 0.18 (0.09-0.28), 0.28 (0.21-0.36), 0.35 (0.25-0.49), and 0.05 (0.01-0.11) for milk yield, fat content, protein content, and SCS, respectively. Marginal posterior medians of genetic correlations between the traits were low and a 95% Bayesian confidence region included zero, with the exception of the genetic correlation between fat and protein contents. Despite the low number of animals in the population, results suggest that genetic variance for production and quality traits exists in Burlina cattle.
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