EFFECTS OF BEE POLLEN AND PROPOLIS ON PERFORMANCE, MORTALITY, AND SOME HAEMATOLOGICAL BLOOD PARAMETERS IN BROILER CHICKENS
DOI:
https://doi.org/10.26873/SVR-385-2018Abstract
This experimental study aimed to determine how propolis and bee pollen (each supplement separately or in combination in a certain proportion), as additives to broiler feed, affect performance, mortality and the values of the selected haematological blood parameters in chickens. This experimental study was conducted on 200 Ross 308 chickens of equally distributed sex, which were randomly divided into five groups. Throughout the whole study, the control group of chickens was fed ordinary feed mixture, while the feed mixture that was fed to the experimental groups of chickens contained propolis and/or bee pollen. The average values of body weight of chickens were significantly higher on the 1st (P=0.001), 2nd-5th (P<0.001) and 6th (P=0.002) weeks of fattening in the experimental groups of chickens in comparison to the control group; the average values of weight gain of chickens were significantly higher on the 1st (P<0.001), 2nd (P=0.002), 3rd (P<0.001), 4th (P=0.029) and 5th (P=0.009) weeks. Lower mortality was recorded in all the experimental groups in comparison to the control group of chickens (P=0.031). Higher values of MCV (P=0.009) and haematocrit (P=0.015) and lower values of the leukocyte count (P=0.029) and of the relative ratio of Mo (P<0.001) were recorded in the experimental groups of chickens in comparison to the control group on the 21st day of fattening. Higher values of the relative ratio of heterophils (P<0.001) and lower values of the relative ratios of lymphocytes (P<0.001) and monocytes (P=0.027) were recorded in the experimental groups of chickens in comparison to the control group on the 42nd day of fattening. The results of this study showed that supplementation with propolis and/or bee pollen improved the general health condition of the chickens and positively affected the performance and the values of the selected haematological blood parameters in the chickens.
Key words: natural feeding additives; chickens; health; blood; chicken feeding
VPLIV CVETNEGA PRAHU IN PROPOLISA NA RAST, SMRTNOST IN NEKATERE HEMATOLOŠKE KAZALNIKE PRI PIŠČANCIH BROJLERJIH
Namen raziskave je bil ugotoviti, kako cvetni prah ali propolis posamezno ali v kombinaciji vplivata na prirast, smrtnost in nekatere hematološke kazalnike pri piščancih brojlerjih. V raziskavo je bilo vključenih 200 piščancev brojlerjev pasme ross308. Piščanci so bili razdeljeni naključno v pet poskusnih skupin, v katerih sta bila enakomerno zastopana oba spola. Kontrolna skupina piščancev je ves čas raziskave prejemala navadno hrano za brojlerje, medtem ko so 4 poskusne skupine prejemale hrano z dodatkom cvetnega prahu in sicer skupina 1 (P1) 0,25 g propolisa in 20 g cvetnega prahu/kg hrane, skupina 2 (P2) 0,5 g propolisa/kg hrane, skupina 3 (P3) 1 g propolisa/kg hrane in skupina 4 (P4) 20 g cvetnega prahu/kg hrane. Telesna teža piščancev je bila statistično značilno višja 1. (p < 0,001), 2. (p < 0,001) in 5. (p < 0,01) teden raziskave v vseh poskusnih skupinah v primerjavi s kontrolno skupino. Podobno je bil tudi povprečen dnevni prirast pri piščancih iz poskusnih skupin statistično značilno višji 1. (p < 0,001), 2. (p < 0,01), 3. (p < 0,001), 4. (p < 0,05) in 5. (p < 0,01) teden raziskave. Tudi smrtnost je bila statistično značilno nižja v vseh poskusnih skupinah v primerjavi s kontrolno skupino (p < 0,05). Piščanci iz poskusnih skupin so imeli 21. dan poskusa v povprečju višje vrednosti MCV (p < 0,01) in hematokrita (p < 0,05) ter nižje povprečno število levkocitov (p < 0,05) in relativno razmerje MO (p < 0,001). Na 42. dan poskusa smo ugotovili višje vrednosti razmerja med heterofilci (p < 0,001) ter nižje relativne vrednosti limfocitov (p < 0,001) in monocitov (p < 0,05) pri piščancih iz poskusnih skupin v primerjavi s piščanci iz kontrolne skupine. Rezultati raziskave kažejo, da dodajanje propolisa ali cvetnega prahu izboljša splošno zdravstveno stanje piščancev brojlerjev ter posledično izboljša njihov prirast ter zviša telesno maso, zato bi se ju lahko uporabljalo kot dodatka k hrani za piščance brojlerje.
Ključne besede: piščanci; prirast; zdravstveno stanje; propolis; cvetni prah
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