2025, Plenarni referati, str. 37-48
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Značaj modulacije nutritivnih strategija u pripremi ovaca za pripust
Significance of nutritional strategies modulation in the preparation of sheep for insemination
aUniverzitet u Beogradu, Fakultet veterinarske medicine, Srbija
bPatent Co, Mišićevo
Projekat: Ministarstvo nauke, tehnološkog razvoja i inovacija Republike Srbije (institucija: Univerzitet u Beogradu, Fakultet veterinarske medicine) (MPNTR - 451-03-68/2020-14/200143)
Sažetak
Neadekvatna ishrana kod ovaca može dovesti do neredovnih ciklusa, slabog potomstva, toksikoze tokom trudnoc'e ili smanjenog broja jagnjadi. Kod ovnova, posledice neizbalansirane ishrane su smanjena količina i kvalitet sperme. "Flashing" u ishrani ovaca predstavlja nutritivnu meru kojom se privremeno poboljšava ishrana ovaca neposredno pre parenja, u svrhu poboljšanja reproduktivnih performansi, sa krajnjim ciljem povećanja plodnosti i broja jagnjadi po ovci. Preporuka za specifičan vid ishrane odnosi se na vremenski period od 2-3 nedelje pre početka parenja uz savet da se nutritivni tretman produži na određeni vremenski period i nakon parenja. Najrasprostranjenije shvatanje "flashing" ishrane u stručnoj zajednici predstavlja povećanje energetskog unosa hrane. Međutim, ako uzmemo u obzir maksimalnu uslovljenost i interakciju različitih hranljivih materija pri varenju i iskorišćavanju hrane u digestivnom traktu ovaca, jasno je da ovaj koncept podrazumeva visoko sofisticiranu korekciju obroka u cilju optimizacije reproduktivnih kapaciteta stada, sa osvrtom na različite nutritivne klase kao što su: voda, energija, proteini, vitamini i minerali.
Abstract
Inadequate nutrition in sheep can lead to irregular cycles, fragile offspring, toxicosis during pregnancy or reduced number of lambs. In rams, the consequences of an unbalanced diet are reduced sperm quantity and quality. "Flashing" in sheep nutrition is a nutritional measure that temporarily improves the nutrition of sheep immediately before mating, in order to improve reproductive performance, with the ultimate goal of increasing fertility and the number of lambs per ewe. The recommendation for a specific type of nutrition refers to a time period of 2-3 weeks before the start of mating, with the advice to extend the nutritional treatment for a certain period of time after mating. The most widespread understanding of "flashing" nutrition in the professional community is an increase in the energy intake of feed. However, if we take into account the maximum conditioning and interaction of different nutrients during the digestion and utilization of food in the digestive tract of sheep, it is clear that this concept implies a highly sophisticated correction of meals in order to optimize the reproductive capacities of the herd, with reference to different nutritional classes such as: water, energy, proteins, vitamins and minerals.
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