Extrusion technology of soybeans and obtained product feeding effect on lactating sows and their offsprings productivity
2022
Jansons, Imants | Degola, Lilija | Sterna, Vita
The aim of study was to estimate the processing technology of soybeans produced in Latvia and to compare the possibilities of using the obtained soybean cake with imported soybean meal in the feeding of lactating sows and their offspring. From soybeans, which were processed into animal feed, we obtained a product with a high content of protein. The control group of sows and fattening pigs received the imported soybean meal mixed into the compound feed, but the trial groups compound feed was mixed with soybean cake grown and processed in Latvia. Fattening pigs were weighed regularly. Feed consumption was counted and feed conversion was calculated. Meat quality, carcases weight, and carcases length was determined. The chemical composition of the manure was analysed. Statistical analysis of data was performed with SAS / STAT 9.22 software package. The inclusion of soy cakes grown and processed in Latvia in lactating sow feed increased sow milk yields traits by 3.9% at 21 day of piglet age. At the end of experiment higher live weight by 3.42% were found in the trial group. Carcass quality indicators and chemical composition of meat did not show significant differences. A tendency to decrease in manure the content of organic matter in the trial group by 3.25% was observed, decrease levels of total phosphorus and ammonium nitrogen were compared to the control group. Using soybean cakes grown and processed in Latvia is possible to develop feed rations that showed similar pig growth results to imported soybean meal.
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