Study of physico-chemical parameters of cattle rumen content after drying

The article presents a study of the physico-chemical parameters of cattle rumen content after drying. Currently, one of the main issues in Kazakhstan is the processing of secondary raw materials. The country has almost no processing of secondary meat raw materials, and this process has not yet been organized. The aim of the research is to conduct a physico-chemical analysis of cattle rumen content and to explore the possibilities of its processing. The results of the study revealed that the processing of cattle rumen content is feasible. During the study, the moisture content of the cattle rumen mass was reduced to 7.9%, and its physico-chemical parameters were determined, including initial moisture, hygroscopic moisture, total moisture, dry matter content, ash, sugar, non-nitrogenous extractive substances (NES), fiber, fat, protein content, as well as the volume of minerals and vitamins. The study results showed that the total moisture content was 7.90%, and the dry matter content was 92.10%. Additionally, the composition of cattle rumen content was found to contain: protein — 3.59%, fat — 0.10%, fiber — 36.93%, NES — 42.22%, sugar — 0.67%, and ash — 9.26%. The vitamin content analysis revealed the presence of vitamin E (22.13%), vitamin B1 (0.024%), vitamin B2 (0.03%), vitamin B3 (0.094%), vitamin B5 (0.051%), and vitamin B6 (0.017%). Among the mineral elements, the highest concentration was found in potassium (K) — 208.96 mg/100 g, followed by phosphorus (P) — 118.61 mg/100 g, calcium (Ca) — 103.25 mg/100 g, magnesium (Mg) — 24.18 mg/100 g, iron (Fe) — 8.79 mg/100 g, copper (Cu) — 3.71 mg/100 g, and zinc (Zn) — 3.16 mg/100 g. The results showed that cattle rumen content has a high ash content, is rich in fiber, NES, minerals, vitamins, and has significant potential for processing. Thus, the processing of cattle offal in Kazakhstan can make a significant contribution to solving the waste disposal problem, while simultaneously creating high-value-added products and reducing environmental impact.