INVESTIGATION OF THE EFFECT OF DIFFERENT NITROGEN LEVELS IN THE RATIONS ON THE ECONOMIC PARAMETERS OF PIG FARMING FROM DANBRED HYBRID | Проучване на ефекта от различни равнищата на азот в дажбите върху стопанските показатели на прасета от хибрида DanBred
2010
Ilchev, A., Thracian University, Stara Zagora (Bulgaria)
Experiment on farm with 2 groups – control and experimental including 180 pigs DanBred hybrid in each group was conducted in pig farming complex Brashlyan, Russe area for establishing the economy effect of reduced level of amino acid in pig nutrition. Duration of experiment was 80 days and started in a pigs Live weight - LW average 32.2-33.8 kg and finished up to 102-103 kg. LW. Animals from the control group were fed with combined feed, well balanced concerning to digestible amino acids according to the norms of DanBred, while the experimental group was fed with the same feeds but reduced with 10 %. Feed mixtures were produced in the feeding enterprise of the pig farming complex and the composition was strictly controlled by CCS - computer controlling system. During the experiment live weight, feed intake, feed conversion ratio, health condition and mortality of animals were controlled and precisely measured. The result obtained from the experiment confirmed the standpoint that reducing the content of digestible amino acid in the ration of DanBred hybrid pigs with 10% is effective and the price of combined feed used in feeding was reduced with 21.6 BGN lv/t in grower and with 17.0 lv/t in finishing period. This had a positive effect on the reduced production costs of the obtained weight gain. Reduced level of digestible amino acids had not negative impact on the feed intake and the obtained weight gain. For the total experimental period the weight gain of the pigs fed with reduced 10% digestible amino acids ration had been 2.4% lower, but the specific cost had been with 0.025 lv better. This way for each pig fattened with 70 kg total weight gain pure benefit 7.65 lv could be obtained.
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