Summary: Article presents the results of long-term observations for the study of the productivity of natural pastures located in areas of mountainous and foothill areas of the Republic of Uzbekistan. Also presented and interpreted in terms of productivity and material changes in the amount of nutrients, as well as the nutritional value of pasture forages under the influence of climatic factors and the seasons of the year.     

Кey words: Karakul sheep, nutrition, pasture, chemical, botanical composition of pasture grass.