Dana Tapaloaga

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OBSERVATIONS REGARDING SOME PHENOTYPIC CORRELATIONS BETWEEN THE MORPH METRIC FEATURES OF SPERMATOZOA IN DOMEMESTIC ANIMALS WITH ECONOMIC PURPOSES

Dana Tapaloaga, A.T. Bogdan, Iuliana Neagu, C. Culea, Ileana Paunescu, P.R. Tapaloaga, Carmina Marmandiu, M.Th. Paraschivescu, I. Răducuţă

Abstract
Morphological type classification of spermatozoa is an important component of the modern semen evaluation; however, current methods of analysis are subjective and highly variable between technicians. Artificial insemination using cryogenic preserved semen is a common management tool of the contemporary livestock producer.
There was setting off animal groups depending on different factors. There were used random images of the samples with the aid of a specialized soft. For the special sperm files there were determined the indices: total length of spermatozoa, head length, head width, tail length. The analyzed data were statistically remade, being recorded the main population parameters: the average, its error, the standard deviation, the coefficient of variability.
There were also established the absolute and relative differences among the different categories of age and species. It was carried out the significant difference testing among the above categories with the aid of the Student test. There were also calculated the phenotypic correlation values among the analyzed features, after these were recorded the conclusions.

Key words: morphometry, sperm, cryo preservation, morphologic assessment