The effects of relationship of metabolisable energy, lysine and threonine in the diets of the first two thirds on gestation of sows
B. Živković , Władysław Migdał , G. Cilev , Č. Radović , M. Gogić , G. Marinkov , Lj. Stojanović
AbstractThe effects of the use of ratios lysine:metabolisable energy and threonine:metabolisable energy in the nutrition of gestating sows during the first two thirds of gestating period were investigated. Experimental (the second group in the experiment) sows were fed during the first 76 days of gestation with experimental diet and till the end of gestation both groups of sows were fed with equal diets. All lactating sows were fed the same diets and all suckling piglets also were fed with creep fed during the lactation period. Research characterized was carried out total 21 sows in the two treatments (11 animals in the first, control group and 10 animals in the second, experimental group) were included in the experiment, on Experimental pig farm in Institute for Animal Husbandry, Zemun in Serbia. Obtained results showed that in the control, gestating diet characterized with lysine:ME 0.51 g/MJ and threonine:ME 0.40 g/MJ, were losing 17.70% of their weight during lactating period. During the same period the sows consumed 4.04 kg/day of food, 9.45 piglets/litter were weaned with 6.45 kg of average body mass at weaning. Average mass of whole litter in the first, control, group was 60.98 kg at weaning, which means that average daily gain of piglets was 169 grams. The feed intake in creep feeding was 5.80 kg/litter. The second, experimental, group of animals fed the gestating diet characterized with lysine:ME 0.61 g/MJ and threonine:ME 0.41 g/MJ sows in lactatation were losing 14.60% of their own body mass which was by 17.5% less compared to the control group of animals. Feed intake in experimental group of sows in lactation was 4.46 kg/animal, which was by 10,40% higher compared to the control group. With realized 9.60 piglets per litter at weaning and average body mass of 7.15 kg/animal, the litter weight of the experimental group was 68.51 kg which was by 12,34% better compared to the control group of animals. Average daily gain of experimental group of piglets was 187 grams i.e. the improvement by 10.65% and piglets consumed 5.90 kg of feed creep feeding, which was by 1.72% less of feed compared to the control group of piglets. Apparent coefficients of digestibility of dry and organic matter, protein and fibre showed that the level of utilization of all tested indicators was similar in both compared groups at the end of study period, i.e. first 70 days of gestation. Economical analysis of feed costs showed that the feeding in gestating sows and lactating ones the trial mixtures, as well as the diet in creep feeding, increased the cost of mixture by 1.53%. However, realized value of legal realized piglets at the end of lactation showed that the piglets of the control group have realized by 12,34% lower value of realized piglets compared to the animals of experimental group. In general, the obtained results showed that by correcting lysine:ME and threonine:ME ratios for the first two thirds of gestation, the sows have better production performance, the similar results concerning apparent digestibility of nutrients and the price of realized piglets are achieved, for lactating sows.
|Publication size in sheets||0.5|
|Book||Lukić Miloš (eds.): Modern Trends in Livestock. Proceedings.10th International Symposium, 2013, Institute for Animal Husbandry, ISBN 978-86-82431-69-5, 1261 p.|
|Keywords in English||ratio lysine:ME, threonine:ME, the first two thirds of gestating sows, suckling piglets|
|Finansowanie||Research was financed by the Ministry of Education, Science and Technological Development of Republic Serbia within project TR 31081|
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