Characteristics of productivity parameters of age-1 carps of Nesvich zonal type

Purpose. Provide a comprehensive productive and biological characterization of carps of the new selective breeding type, the first generation — Nesvich zonal type in the first year of life. Methodology. The study was conducted in fish farms of the Lviv and Volyn regions of Ukraine. The material for the study were young-of-the-years and age-1 carps of Nesvich zonal type. The main productive and biological parameters were studied during test harvests during the growing season according to generally accepted methods in fish farming. The external evaluation of the experimental groups was carried out according to the following parameters: body weight and length, body height, body girth. Measurements were made with a centimeter tape with an accuracy of 1 mm. Individual weighing was carried out on electronic commercial scales with an accuracy of 1 g. Based on the results of the measurements, the main exterior parameters were analyzed and determined: body length to girth ratio, body length to height ratio, body length to head length ratio. Findings. The study showed that young-of-the-year carps of Nesvich zonal type were characterized by high productive parameters. The average individual weight was 39.3–55.0 g for framed and 42.0–67.9 g for scaled forms. According to winter hardiness, with the survival rates in the range of 80.5 - 84.5%, scaled forms of carp had the weight loss of 8.6 - 10.3% while framed carps had 9.1 - 9.8%. Originality. The results of the study on growing the first selection generation of young-of-the-year and age-1 Nesvich carp, which will be submitted to the approval of this zonal type as an intrabreed type of Ukrainian framed and scaled carp breeds, are provided. Practical value. The results of the analysis of productive and biological parameters will allow providing recommendations on the use of this zonal type as a new type for commercial growing.