Effect of different ways of improvement of feeding rations for piglets

Because of the specific structure of pigs' digestive tract, especially in b aby pigs, animal feeds must be composed of highly concentrated digestible n utrients of high quality. There are numerous investigations to find the way s of increasing nutritive and energetic values of diets for piglets. One of the ways is to include different biostimulative substances in feeding rati ons. On the other hand, there is a possibility of preparing some components and complete feeding rations of higher quality. Since both the previously mentioned ways are scientifically based, the purpose of our investigation w as to test the individual impact of the added enzyme(s) (experimental group I), thermal process of micronization of some feed ingredients in feeding r ations (experimental group III) as well as joint effect of enzymes and ther mally processed feed for piglets weanlings (experimental group II). The res ults of our investigations are as follows: if the quantity of feeding ratio ns was consumed at approximately the same level in both experimental groups and the control group, better feed conversion was determined in experiment al groups (the best results were obtained in experimental group II, 10% low er than the results obtained in the control group). Daily weight gain and b ody weight were also recorded in different phases and the results were bett er in all three experimental groups. Piglets from the second experimental g roup were characterised by the highest body weight, which was statistically significant (P < 0.05) in relation to experimental group I and the control group. Piglets from the second experimental group were also characterised by the highest daily weight gain, which was statistically highly significan t (P < 0.01) in relation to experimental group I and the control group. As for the daily weight gain, positive results obtained in the third experimen tal group were statistically significant. Along with the positive results i n production, a satisfactory health state of piglets should also be stresse d. During our investigations 6 piglets were lost and 3 eliminated, which re presents 5.6% of total piglets. Considering the evident positive effect of the joint impact of the two tested treatments (enzymes and micronization), these ways of treatment of feed ingredients in piglet feeding rations are j ustified according to our opinion, and should be used produced and commerci ally.