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THE EFFECT OF RATIO OF METABOLISABLE ENERGY, LYSINE AND THREONINE IN THE DIETS ON PERFORMANCE OF SOWS DURING THE WHOLE GESTATION PERIOD
Branislav Živković
; Institute for Animal Husbandry, Belgrade-Zemun, Republic of Serbia
W. Migdal
; Akademia Rolnicza, Kraków, Poljska
Goce Cilev
; University “St Kliment Ohridski” Veterinary Faculty, Bitola, R. Macedonia
Č. Radović
; Institute for Animal Husbandry, Belgrade-Zemun, Republic of Serbia
M. Gogić
; Institute for Animal Husbandry, Belgrade-Zemun, Republic of Serbia
Biljana Rusmirović
; Agricultural University, Zemun, Republic Serbia
Sažetak
The effect of the use of rations lysine: metabolisable energy and threonine:metabolisable energy in the nutrition of gestating sows during the whole gestating period was investigated. Experimental (the second group in the experiment) sows were fed during the whole gestation period experimental diet. All lactat¬ing sows were fed the same diets and all suckling piglets were also fed creep feed during the lactation period. Research was carried out on 28 sows in two treatments (13 animals in the first, control group and 15 animals in the second, experimental group) included in the experiment, on Experimental pig farm in Institute for Animal Husbandry, Zemun, Serbia. Obtained results showed that in the control group, ges¬tating diet with lysine:ME 0.51 g/MJ and threonine:ME 0.42 g/MJ, the sows were losing 16.37% of their weight during the lactating period. During the same period the sows consumed 3.85 kg/day of feed, 9.00 piglets/litter were weaned, average weighing 7.48 kg. Average mass of the whole litter in the control group was 67.36 kg at weaning, which means that average daily gain of piglets was 204 grams. The feed intake in creep feeding was 6.45 kg/litter. The experimental group of animals fed the gestating diet characterized with lysine:ME 0.55 g/MJ and threonine:ME 0.38 g/MJ. Sows in lactation were loosing only 12.72% of their own body mass which was by 22.3% less compared to the control group of animals. Feed intake in the experimental group of sows in lactation was 4.21 kg/animal, which was by 9.35% higher compared to the control group. With realized 9.73 piglets per litter at weaning and average body mass of 7.74 kg/animal, the litter weight of the experimental group was 75.34 kg which was by 11.85% better compared to the control group of animals. Average daily gain of experimental group of piglets was 213 grams i.e. the improvement by 4.41% and piglets consumed 8.23 kg of creep feed, which was by 27.60% (P<0,05) more of feed compared to the first, control, group of piglets. Apparent coefficients of digestibility of dry and organic matter, protein and fiber showed that the level of utilization of all tested indicators was better in the experi-mental diet compared to the control group at the end of the study period, i.e. 110 days of gestation. Economic analysis of feed costs showed that the feeding of gestating and lactating sows using the trial mixtures, as well as the creep feed, increased the cost by 0.89%. However, realized value of piglets at the end of lactation showed that the piglets of the control group realized by 11.85% lower value compared to the animals of the experimental group. In general, the obtained results show that by correcting lysine:ME and threonine:ME ratios for the whole period of gestation, the sows have better both production performance and apparent digestibility of nutrients and the price achieved for piglets.
Ključne riječi
ratio lysine:ME; threonine.ME; whole of gestating sows; suckling piglets
Hrčak ID:
121534
URI
Datum izdavanja:
19.5.2014.
Posjeta: 1.503 *