Characteristics of the chemical composition of wet flattened corn grain and use of IT in the feeding of cows

Abstract

In all types of cereals corn has the highest energy content; the chemical composition of corn is distinguished by high starch content up to 70 %. Cows are able to give high productivity when the rational use of this feed as part of the ration. The purpose of the work was to compare the nutritional content of wet flattened corn grain and the influence of feeding it as an additive to the main ration on the dairy productivity of cows. Two groups of dry cows-analogues have been formed for the experiment. Wet flattened corn grain has been fed to mature cows for 110 days, starting from the dry period (30 days before the expected calving) and during the beginning of lactation (starting from 15 days and for 60 days). High starch content has been found in the wet flattened corn grain – 58,5 %. The results of control milking after calving at the period of increasing the milk have been shown a sharp increase in daily milk yield in both groups: in the control group up to 21,97 and in the experimental group up to 29,37 kg of milk. The difference was 7,4 kg and was significant at P ≤ 0,001. After a month of productivity control, there was the increase in the average daily milk yield compared to the previous month by 2,33 kg in the control group and by 1,75 kg in the experimental group, amounting to 24,3 and 31,12 kg, respectively. The difference between the groups was 6,82 kg of milk and was significant at P ≤ 0,05. According to the results of feeding wet flattened corn grain as part of the ration to cows during the dry period and at the period of increasing the milk yield (for 60 days), then average of 1897,9 kg of milk per head has been obtained from cows of the experimental group, which was by 268,0 kg more than from analogues of the control group.