Veterynarna biotehnologija – Veterinary biotechnology, 2018, 33, 31-38 [in Ukrainian]. https://doi.org/10.31073/vet_biotech33-04
DUDA Y.V., e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
Dniprovsky State Agrarian and Economic University
PRUS M.P., e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
National University of Life and Environmental Sciences of Ukraine
KUNEVA L.V., e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it., SHEVCHIK R.S., e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
Dniprovsky State Agrarian and Economic University
THE EFFECT OF CYSTICERCOSIS INVASION ON THE INTERNAL ORGANS CONDITION AND MEAT PRODUCTIVITY OF RABBITS
Introduction. Veterinarians don’t pay enough attention to invasive diseases. Scientists have established [1, 2] that 41.6% of rabbits and 21.7% of hares are affected by Cysticercus pisiformis. Intensity of infestation at rabbits varies from 3 to 121, hares – from 7 to 48, according to other authors to 600 cysticercus [3]. The slaughter mass and meat yield are indicators that characterize the meat production [4, 5, 6]. The condition of internal organs depends on the effect of pathogenic factors, in particular, Cysticercus pisiformis [7].
The goal of the work was to establish the meat productivity and condition of the internal organs of rabbits under the effect of Cysticercus pisiformis.
Materials and methods. At the farm where the study was conducted, the animals were kept in cages. The ration consisted of concentrated food with freshly cut hay. For a high intensity of infestation (II), we considered the presence of more than 10, and for a low II – less than 10 larval cysts.
Results of research and discussion. In case of high II, we observed an increase in size of the liver, with light gray and dark red areas, under the capsule – cysts up to 15 mm length. Similar changes were described by Zaritska A.O. (2014) [8]. The greatest number of cysts was registered on the mesentery. According to the research of Mr. Dubin I. M. (2000) these larval cysts are rarely located in mesentery [2]. Animals with low II were inactive for 2-5 days. The animals showed decrease in appetite, anemia of the mucous membranes. Larval cysts were located only on the serous membrane of the rectum. In the liver, a slight proliferation of connective tissue in the form of white spots was observed. Carcass of infected rabbits had a second category of fatness, while healthy ones – the first. The live weight, slaughter weight and meat yield of the rabbits were less by 163.75 g (4.81%, p<0.01), by 108.00 g (5.44%, p<0.05) and by 0,67% respectively compared with healthy animals. All organs of infected animals decreased in weight: heart – by 7.22% (p <0.05), liver with gall bladder – by 13.42% (p<0.05), kidneys – by 8.09% (p<0.05), testes – by 23.65% (p<0.01), except of spleen and lungs, which increased by 38.04% (p<0.05) and 9.43%, respectively.
Conclusions and prospects for further research. The animals with a low II had a mild clinical symptoms. The larval cysts were located only on the serous membrane of the rectum; white spots of various forms were observed in the liver. Internal organs were not sufficiently developed. This led to a disruption in metabolic processes and a low level of meat production. Further studies will be aimed to investigate protein metabolism changes in rabbits infected with the Cysticercus pisiformis.
Keywords: Cysticercus pisiformis, slaughter weight, internal organs, rabbits.
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