DIGITALNA ARHIVA ŠUMARSKOG LISTA
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ŠUMARSKI LIST 11-12/1995 str. 26 <-- 26 --> PDF |
J. Bina, L. Manojlović, M. Forgić B. Urošević: ISTRAŽIVANJE UTJECAJA NAČINA SPARIVANJA U DIVLJE SVINJE Šumarski list br. 11—12, CXIX (1995). 373—381 Plotkinje koje se rano oprase, već do 31. 3., odgoje do završetka proizvodnog ciklusa krupniju prasad što povećava prozivodnju mesa za približno 25% (oko 1.000 kg). Naime, tjelesna masa prasadi poslije prasenja u vrijeme odgoja raste za približno 5 kg mjesečno, tako da su rano oprasena prasad teža za 10-15 kg, od rođenih u travnju i svibnju. Tjelesno krupnija prasad uvečava draž skupnog lova na divlje svinje, a ujedno se postiže i veći financijski učinak u pojedinačnom lovu (po cjeniku Uprave šume Osijek, prase preko 30 kg težine, skuplje je za 100 DEM). Nov način sparivanja, uz stabilan i visok srednji broj prasadi po oprasenoj plotkinji (3,85-4,30 za dvogodišnje plotkinje i 4,70-4,87 za starije), daje i niz drugih izravnih i neizravnih prednosti u uzgoju: omogućava racionalizaciju prirodne prehrane, pojeftinjuje dohranjivanje koncentratima, pridonosi učinkovitijem hvatanju plotkinja za rasplodni fond itd. LITERATURA Fruzinski, B., Naparty. K.: Chronologie des Frischens bei Wil-ponašanje u čoporima divljih svinja (Sus scrofa L.) kod hranilišta u ljetdschweinen. Zeitschrift fur Jagdwissenschaft. 38, 1992., 262 - 264. ujem prihranjivanju. Šumarski list CXVI, 1992., 295 - 300. Krže, B.: Divlje svinje. Biologija i gazdovanje. Sarajevo: Savez loPopovič, S.: Uticaj nekih antropogenih faktora na dinamiku i vreme vačkih organizacija Bosne i Hercegovine "Lovački list". 1988. parenja divljih svinja na području Kopačkog rita. Smotra dostignuća u stoManojlović, L., Nikolandić, D., Uroševič, B.: Dinamika čarstvu i veterini 1981., Novi Sad: Privredna komora Vojvodine, 1982., parenja divlje svinje (S. scrota) u različitim ekološkim uvjetima Baranje. 431 - 433. Znanost i praksa u poljoprivredi i prehrambenoj tehnologiji, 22 (1), 1992., Popovič, S.: Vreme parenja i plodnosti divljih svinja (S. scrofa) na 237 - 243. "Belju". Bilten "Jelen" -jubilarno izdanje povodom 20. g. rada LŠPG "JeNikolandić, D., Brna, J., Urošević, B.: Veličina, sastav i len", 1972., 132 - 135. SUMMARY: Dynamics of bearing wild boar sow has been investigated according to two different methods of pairing wild boar sexes in fenced hunting ground "´Mačkovac" - Forestry Enterprice Osijek. Previous research of dynamics of bearing wild boar sows (Manojlović et al, J 992.), which have been mated with wild boars in the last decade of October or the first decade of November, trying in that way, regarding the length of their bearing, that most of them give birth in optimal time, in March, dind´t bring the expected result, only 30% of wild boar sows gave birth in optimal time, an the rest in April and May. Pigs from later litter size (April and May) were lagging in growth and didn ´t achieve the weights desirable for group wild boar hunting. Some other defects in this mating method have been noticed as well. That was the main reason for inserting and testing following changes in mating method: * beginning of mating sexes was moved two months in advance; * wild boars are taking into pairing paddock before wild boar sows; * wild boar sows are trapped and collected in the period of ten days and thee mated with wild boars all together, in contrast to before when mating lasted a month and more and depended on the number of trapped wild boar sows in that period; * young females, pigs for replacement stock are selected - in contrast to before when the liveweight was the only criterion (control group of female pigs) from wild boar sows recognized by earlier bearing and successful raising of the pigs (experimental group of pigs); * dynamics an pairing date are controlled every seven days, counting pigs in litter size beside feeding place in the group of the oldest wild boar sows (6-8 years), middle-aged group (3-5 years) and young (2 years); dynamics of bearing chosen wild boar sows in control and experimented group is particularly controlled. Research results are shown in tables ang graphs 1-5. 380 |