Two scientific achievements of interdisciplinary research teams involving scientists from the Institute of Animal Reproduction and Research PAS have been honored by the Committee of Animal Sciences and Aquaculture of the Polish Academy of Sciences – one with the main prize and the other with an honorable distinction.
The main prize of the Committee of Animal and Aquaculture Sciences of the Polish Academy of Sciences was awarded for the scientific achievement „Antioxidant and immunostimulating effect of different levels and the mutual ratio of lysine, arginine, and methionine in mixtures for turkeys for slaughter”.
The authors of the paper are:
- Prof. Dariusz Mikulski, Ph.D;
- Prof. Katarzyna Ognik, Ph.D;
- Paweł Konieczka, Ph.D;
- Magdalena Krauze, Ph.D;
- Anna Stępniowska, Ph.D;
- Ewelina Cholewińska, Ph.D;
- Bartłomiej Tykałowski, Ph.D;
- Prof. Zenon Zduńczyk, Ph.D;
- Prof. Jerzy Juśkiewicz, Ph.D.
The study aimed to determine the optimal ratio of lysine (Lys), arginine (Arg), and methionine (Met) in diets of turkeys for fattening, taking into account different intensities of feeding and multidirectional metabolic effects of amino acids analyzed. The researchers considered a wide range of indicators, including production performance, metabolic responses, immune system responses, possible oxidative damage to lipids, proteins, and DNA and protein nitration, epigenetic changes, repair mechanisms conditioning the intestinal integrity of turkeys infected with C. perfringens bacteria, and selected metabolic indicators illustrating the degree of lipid, protein and DNA oxidation.
Apart from cognitive aspects, appreciated by reviewers appointed by editors of renowned worldwide scientific journals, the results obtained were useful for turkey compound feed manufacturers.
The overriding aim of the conducted research is the possibility of using the results from economic entities involved in the production of turkey feed. Implementation of the research results may significantly contribute to improving the rearing efficiency of turkeys for fattening and also reducing the number of antibiotics used in their treatment.
The distinction of the Committee for Animal Sciences and Aquaculture of the Polish Academy of Sciences was honored to the scientific achievement „Development of a standardized method for cryopreservation of fish semen”.
The authors of the work are scientists from the Department of Gamete and Embryo Biology of our Institute:
- Prof. Andrzej Ciereszko, Ph.D;
- Sylwia Judycka, Ph.D.;
- Joanna Nynca, Ph.D;
- Mariola Dietrich, Ph.D;
- Daniel Żarski, Ph.D;
- Ewa Liszewska, M.Sc.
The research concerns the development and improvement of procedures for the cryopreservation of semen from salmonid fish (rainbow trout, alpine pike, rainbow trout neo-spawning, and spring trout) and perch fish (perch and pike-perch). Establishing semen banks for these fish is an important element of the strategy to protect the biodiversity of local species, as well as providing an opportunity to secure semen from the most valuable individuals in terms of breeding.
The research project has developed a novel, standardized (in terms of a constant number of sperm in the straw and final concentration of cryoprotectants) methodology for cryopreservation of fish semen using a simple glucose-methanol diluent. The researchers confirmed that an appropriate cryopreservation protocol must be used for each of the species studied.
The results of the study were published in a series of papers published in prestigious international aquaculture journals and summarized in a review paper („Opportunities and challenges related to the implementation of sperm cryopreservation into breeding of salmonid fishes”) published in a special issue of Theriogenology on fish reproduction.
