INDICATORS OF DOWNY FIBER DIAMETER OF TUVA MALE GOATS DEPENDING ON AGE
| Autor: | Raisa Sh. Irgit, Alexander A. Khodusov, Maria E. Ponomareva, Svetlana N. Ondar |
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| Jazyk: | English<br />Russian |
| Rok vydání: | 2023 |
| Předmět: | |
| Zdroj: | Siberian Journal of Life Sciences and Agriculture, Vol 15, Iss 3, Pp 119-138 (2023) |
| Druh dokumentu: | article |
| ISSN: | 2658-6649 2658-6657 |
| DOI: | 10.12731/2658-6649-2023-15-3-119-138 |
| Popis: | The strategy for the conservation of genetic diversity involves the cultivation of unique native breeds of animals. Tuva coarse-haired goats are relatively prolific, moderately early maturing, and, in addition to good meat productivity, have unique economically useful traits - very thin fluff. The purpose of the study was to study the productive indicators of Tuva coarse-haired goats and goats to identify age-related features of the morphometric parameters of the coat using an OFDA-2000 optical analyzer of the diameter of wool fibers. 18 months (n=20). The length of the down is 5.14±0.33 cm and 4.45±0.15 cm in goats and goats, respectively. The proportion of downy hair (diameter less than 30 µm) in the staple ranges from 85.0±1.23% to 87.37±1.34%. The amount of transitional hair is at the level of 3.85±0.82-4.62±0.65% (Cv 62.51-79.90%). With age, the animals tend to coarsen the fibers, this is evidenced by both the shift of the histogram peak from 16.20±0.40 µm in goats to 17.43±0.43 µm in goats, and changes in the structure of hair related to the awn ( goat wool contains 7.2 times more fibers with a diameter of more than 90 microns), We believe that when selecting Tuva goats to obtain high-quality down with the smallest fiber diameter, special attention should be paid, in addition to the length of the down and its diameter, to the presence of a transitional hair type (30.1-52.5 µm). |
| Databáze: | Directory of Open Access Journals |
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