Uticaj selena organskog i neorganskog porekla i različite količine vitamina E na sadržaj selena i masnokiselinski sastav mesa brojlera

U radu su ispitivani efekti suplementacije obroka brojlera organskim i neorganskim oblicima selena i različitim količinama vitamina E na kvalitet mesa i prinos mesa brojlera. Ogled je izveden na ukupno 240 jedinki podeljenih u četiri grupe. Ogled je trajao 42 dana, a podeljen je u tri faze. Prva faza trajala je 21, druga 14, a treća sedam dana. Brojleri su hranjeni sa tri vrste potpunih smeša za ishranu pilića u tovu standardnog sirovinskog i hemijskog sastava koje su u potpunosti zadovoljavale potrebe brojlera u različitim fazama tova. Potpuna smeša za početni tov pilića korišćena je od 1. do 21. dana, a potpuna smeša za završni tov od 21. do 35, odnosno od 35. do 42. dana ogleda. Tokom ogleda kontrolna grupa brojlera hranjena je smešama sa dodatim neorganskim selenom (natrijum selenitom) u količini od 0.3 ppm + 20 IJ vitamina E, a ogledne grupe, po redosledu (O-I, O-II, O-III), dobijale su hranu sa dodatkom organskog selena (Sel-Plex-a) +20 IJ vitamina E, neorganskog selena (natrijum selenita) +100 IJ vitamina E ili organskog selena (Sel-Plex-a)+100 IJ vitamina E. Na kraju ogleda brojleri su zaklani i uzeti su uzorci mesa (meso grudi i jetre) za utvrđivanje sadržaja selena i masnokiselinski sastav masti bataka sa karabatakom. Na kraju tova, 42. dana, sadržaj selena u mesu grudi brojlera kretao se od 0.34 mg/kg do 0.43 mg/kg. Koncentracija selena je kod O-III grupe bila značajno (p<0.01) viša u odnosu na grupu koja je dobijala neorganski oblik selena, odnosno kontrolu. Koncentracija selena u jetri brojlera iznosila je na kraju ogleda (42. dan) od 0.50 do 0.63 mg/kg i bila značajno (p<0.01) viša u odnosu na kontrolnu grupu. Dodavanje organskog oblika selena i povećane količine vitamina E u smešama brojlera pruža mogućnosti postizanja boljeg kvaliteta mesa kao i povoljnijeg odnosa nezasićene (NZ) / zasićene (Z) masne kiseline.
In this paper effects of broiler meal supplementation with organic and inorganic forms of selenium and different amounts of vitamin E on broiler meat quality and meat yield were monitored. Trial was performed on total number of 240 animals divided into 4 groups, lasted 42 days and was divided into 3 phases. First phase lasted 21, second 14 and 3rd seven days. Broilers were fed with three types of complete feed mixtures of standards raw and chemical composition for broiler feeding that met or exceeded the nutrient recommendations for growing broilers (NRC, 1998). Complete starter feed mixture was used from 1st to 21st day, mixture for growth from 21st till 35th day and mixture for final growth from 35th till 42nd day respectfully. During trial control group of broilers (C) was given fed with supplemented inorganic selenium (sodium selenite) 0,3 ppm plus 20 IU of vitamin E, experimental group (E-I) was feed meal supplemented with organic selenium (Sel-Plex) 0,3 ppm plus 20 IU of vitamin E, experimental group (E-II) was feed meal supplemented with 0,3 ppm inorganic selenium (sodium selenite) plus 100 IU vitamin E. At the end of the trial, broilers were slaughtered and at that time samples of breast meat and liver were collected for determination of selenium content and content of faty acid in meat of drumstick. At the end of experiment (42nd day), content of selenium in breast meat was from 0.34 mg/kg to 0.43 mg/kg. Concentration of selenium in E-III group was significantly higher (p<0.01) compared to group which was fed inorganic selenium (control group) Concentration of selenium in broiler liver ranged on day 42 of the trial from 0.50 to 0.63 mg/kg which was significant compared to control group (p<0.01). Addition of organic selenium and high amounts of vitamin E in broiler feed mixtures gives possibility for achievement of better quality meat and better ratio unsaturated (US) and saturated (S) fatty acids.