Immunologic approaches at struggle against ticks and diseases connected to them at horses
2009
Lutsuk, S.N. | Ponomareva, M.E., Stavropol State Agrarian Univ. (Russian Federation)
There is shown a possibility of using immunogenotypic analysis for early predicting the incidence of piroplasmidosis in horses. The gene pool of Arabian foals and horses was studied for 4 polymorphic blood systems: the content of transferrin (Tf), hemoglobin (Hb), the activity of arylesterase (AEs) and alkaline phosphotas Ap)e. As was found foals had high occurrence of alleles Tf F – 0.642, Hb A – 0.587, Aes B – 0.742 and low occurrence – Tf H, O, R (0.019-0.069). The most occurred phenotypes are Tf-Df and FF (35.0 and 44.4%, respectively), Hb-Ab (32.5%), Aes-BB (52.5%). The total degree of heterozygosity of mature livestock was 41.0, young animals – 34.2% proving pronounced consolidation of the flock. High percentage of occurrence of phenotype Tf-Df (66.7%) was found in animals that had no disease and phenotype Tf-FF in those which had nuttaliosis (33.3%) and piroplasmosis (37.5%) with reducing animal carriers of phenotype Tf-DF up to 25-33% compared to those which had no disease. It is concluded that the most susceptible to piroplasmidosis are animal carriers of Tf-DF and Aes-HB with high total heterozygosity and less – carriers of phenotype Aes-Hb. It is noted that light grey horses had more ticks on them than dark horses (bay and red). In mares subject to mass offence of ticks the foals are by piroplasmidosis often. The results obtained prove advisability to use immunogenotypic methods in horse selection at horse breeding farms
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