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INFLUENCE OF ZEOLITE ADDITIVES ON PRODUCTION RESULTS AND MICROCLIMATE IN HEAVY PIGS FATTENING
Zvonimir Uremović
; Donje Vrapče 53, Zagreb, Hrvatska
Marija Uremović
; Donje Vrapče 53, Zagreb, Hrvatska
Amarija Farkaš
; Inst. za međunarodne odnose, Zagreb, Hrvatska
Miljenko Konjačić
; Agronomski fakultet Sveučilišta u Zagrebu, Zagreb, Hrvatska
Nikolina Kelava
; Agronomski fakultet Sveučilišta u Zagrebu, Zagreb, Hrvatska
Sažetak
The objective of the study was to establish the influence of zeolite additives from Donje Jesenje Anivital SPS and Aromavital SPS on the production results and microclimate in pigs fattening to 150 kg of body mass. Fattening lasted from 128 to 130 days. The study was carried out at a feedlot with a full floor, and with four groups of 40 pigs crossbreeds (Dutch landrace x Duroc x Pietrain) with the starting weight of 38 kg. Pigs were kept in units with two boxes of an area of 20 m2 each. Pigs in Groups 1 and 2 received 3% of Anivital SPS in feed mixture. The floor of Groups 2 and 3 was sprinkled with Aromavital SPS in average quantity of 6.3 kg per box per day. Group 4 was the control group. The results of the experimental groups in comparison to the control group are summarized below. In Group 1, there was an equal daily gain and food conversion, with reduced fat thickness by 15.8% (P > 0.05), an increase in the percentage of IMM by 0.23% (P > 0.05) and of meat in halves by 0.92% (P > 0.05), a reduction in the average concentration of NH3 in the feedlot air by 17.4% (P>0.05) and NH4+ ions in waste matter by 18.5%; In Group 2, there was an increase in the daily gain by 2.6% (P > 0.05), an improvement in food conversion by 4.9%, a reduction in fat thickness by 20.5% (P < 0.01), an increase in percentage of meat in halves by 2.06% (P > 0.05), a reduction of NH3 average concentrations in the air in the feedlot by 21.9% ( P<0.05) and NH4+ ions in waste matter by 43.2%; In Group 3, the daily gain increased by 1.7% (P > 0.05), food conversion decreased by 3.7%, fat thickness by 2.9 % (P > 0.05), and percentage of IMM by 0.22% (P > 0.05), reduction in the average concentration of NH3 in the feedlot air was by 23.3% (P<0.05) and NH4+ ions in waste matter by 41.0%. These results indicate that the use of domestic zeolite additives can contribute to more economically and ecologically acceptable production of pigs to 150 kg body weight.
Ključne riječi
natural zeolites; Anivital SPS; Aromavital SPS; heavy fattening pigs; production results; ammonia emission
Hrčak ID:
39783
URI
Datum izdavanja:
15.7.2009.
Posjeta: 1.733 *