EFFECT OF SUBSTITUTION OF SOYBEAN MEALS WITH HIGH PROTEIN AND LOW CELLULOSE FRACTION OF SUNFLOWER MEALS IN THE COMPOUND FEEDS FOR WEANED PIGS

Danail Kanev, Radka Nedeva, Gergana Yordanova, Apostol Apostolov

Abstract: A scientific and economic experiment has been conducted in Agricultural Institute -Shumen, examining the effect of substitution on protein equivalent of 50% and 100% of soybean meals with high protein and low cellulose fraction of sunflower meals in the compound feed for weaned pigs from 8 to 30 kg live weight, by the growth rate, the feed conversion ratio, the health condition and cost of production. 63 growing pigs from a Danube white breed were used. Animals were divided into 3 groups of 21 pigs. The pigs in the groups were equalized by origin, live weight, age and number. Experience began at weaning of pigs (8 kg) and continued for 53 days to reach 30 kg of live weight. After substituting the soybean meals with “Sunpro-46”, a decrease in the growth rate has been observed with 7,5% (P = 0.091) in the second group and 24.42% statistically proven (P = 0,001) in the third group. The cost of the compound feed for 1kg growth has been 2.44% lower when substituting 50% of the soybean meals in comparison to the use of conventional blend. When the soybean meals are fully replaced, a growth in fodder cost is observed, which is necessary for obtaining kg growth with 8.54%. In conclusion, up to 50% of soybean meal with “Sunpro-46” high-protein and low- cellulose sunflower meal can be successfully replaced in pigs of 8 to 30 kg of live weight.

Keywords: source of protein; soybean meals; sunflower meals; weaned pigs

Date published: 2019-03-21