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1 Medycyna Weterynaryjna

1 2007

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Zmiany histopatologiczne miesnia piersiowego powierzchownego trojrasowych krzyzowek gesi z udzialem dzikiej gesi gegawej

100%

Walasik K. , Ryszewska A.

tom 63

nr 05

586-589

The aim of investigations was the evaluation of the influence of crossing cultivated tribes of geese (White Koluda® and Slovakian goose) with Greylag geese on the occurrence of the histopathological changes in the superficial pectoral muscle of the crossbreed goose with different Greylag goose gene shares. The experimental material constituted triple (39 goose) and quadruple (40 goose) goose crossbreeds with White Koluda®, Slovakian and Greylag goose gene share. The triple crossbreeds were characterized by 25% and quadruple 12.5% participation of the Greylag goose gene share. At 24-weeks-of-age the birds were slaughtered. Directly after slaughter muscle specimens were taken, from which histological preparations were made, then they were colored by the H+E method and subjected to histopathological analysis. Only insignificant pathological changes were observed in the superficial pectoral muscle of the examined hybrid geese. The analyzed muscle tissue of the experimental triple crossbreeds geese were ascertained as 96.47% normal muscles fibers, while in quadruple crossbreed geese 94.21%. Moreover, in the superficial pectoral muscle of quadruple goose crossbreeds there occurred more significant atrophy fibers (4.23%) and fibers with a changed shape (0.91%) in comparison to identical changes in muscle of triple crossbreeds goose, i.e. respectively 2.76% and 0.45%. Also ascertained were small amounts of giant fibers, necrosis fibers, splitting and central core change types. The results showed that crossbreeding cultivated races with Greylag geese, especially the crossbreeds with higher levels of Greylag goose gene share, possess an excellent ability to adapt to farm breeding conditions and their meat possesses high qualities.