1. A composition comprising a plastic package and nutrient liquid contained in said packaging, wherein the nutrient fluid contains beta-hydroxy-beta-methylbutyrate, and at least one component selected from fats and belkov.2. A composition according to claim 1, characterized in that the nutrient liquid is sterilized avtoklavirovaniem.3. A composition according to claim 1, characterized in that the medicinal fluid upakovana.4 aseptically. A composition according to claim 1, wherein the nutrient fluid contains from about 0.1% to about 8% beta-hydroxy-beta-methylbutyrate by weight of nutrient zhidkosti.5. A composition according to claim 1, wherein the nutrient fluid contains fats, carbohydrates, proteins and beta-hydroxy-beta-methylbutyrate, wherein the protein comprises from about 35% to 100% by weight of soluble protein and includes fosfoserinsoderzhaschy protein comprising at least approximately 100 mmol per kilogram of phosphoserine fosfoserinsoderzhaschego belka.6. A composition according to claim 5, wherein the soluble protein is selected from the group consisting of sodium caseinate, whey protein concentrate and kombinatsiy.7. A composition according to claim 5, characterized in that the medicinal fluid is characterized by a weight ratio of soluble protein to beta-hydroxy-beta-methylbutyrate ranges from about 5: 1 to about 12: 1.8. A composition according to claim 1, characterized in that the medicinal fluid is characterized by a weight ratio of the soluble calcium binding capacity to the total content of soluble calcium is from about 2.3 to about 20,0.9. A composition according to claim 1, characterized in that the plastic packaging comprises at least about 13 smsvobodn1. Композиция, включающая пластиковую упаковку и питательную жидкость, содержащуюся в указанной упаковке, при этом питательная жидкость содержит бета-гидрокси-бета-метилбутират и по меньшей мере один компонент, выбранный из жиров и белков.2. Композиция по п.1, отличающаяся тем, что питательная жи
