Uticaj dodavanja neorganskog fosfora različitog porekla u ishrani brojlera na proizvodne rezultate i stepen mineralizacije koštanog sistema
Impact of differnet inorganic phosphorus sourecs in broilers feed on production performances and bone mineralization
Author
Pavlović, Marija S.Mentor
Markovć, RadmilaCommittee members
Šefer, Dragan
Krstić, Nikola
Baltić, Milan Ž.

Nešić, Ksenija
Metadata
Show full item recordAbstract
Fosfor je mineral od esencijalnog značaja, budući da je uključen u većinu
metaboličkih funkcija u organizmu. Biološka iskoristivost ovog minerala iz
biljnih hraniva je ograničena, usled toga što je u njima fosfor prisutan u formi
fitinske kiseline i njenih soli – fitata. Stoga je neophodno uključivanje
neorganskih izvora fosfora u obrok za živinu, u cilju obezbeđivanja optimalnih
količina fosfora dostupnog organizmu za apsorpciju. Brojni su faktori koji utiču
na stepen apsorpcije fosfora iz kompletne smeše (koncentracija ukupnog fosfora
u hrani, odnos fitinske i nefitinske komponente, koncentracija kalcijuma u
smeši, odnos kalcijuma i fosfora, prisustvo vitamina D, uzrast i genotip
jedinki...).
Cilj ovde izvedenog ogleda je da se ispita uticaj ishrane brojlera obrocima
sa i bez dodatog monokalcijum fosfata, kao izvora neorganskog fosfora u hrani,
na proizvodne rezultate, iskoristivost fosfora i zdravstveno stanje brojlera, sa
posebnim osvrtom na stepen mineralizacije koštanog sistema.
...U ogled je uključeno 300 jednodevne piladi i, to tri grupe po 100 jedinki
ujednačnih po polu i telesnoj masi. Ogledni period podeljen je u tri faze (1 -21.
dan, 22 – 35. dan i 36 – 42. dan), tokom kojih se ishrana piladi razlikovala samo
u pogledu sadržaja i porekla mineralnih hraniva. Kontrolna grupa piladi
hranjena je hranom bez dodatog mineralnog hraniva, dok je u hranu ogledne
grupe O – I uključen monokalcijum fosfat proizvođača „Elixir Feed“ DOO iz
Šapca, a u hranu ogledne grupe O – II uvozni monokalcijum fosfat.
Tokom ogleda praćeni su proizvodni rezultati (telesna masa, ukupni i
dnevni prirast, konzumacija hrane, konverzija hrane). Po 10 jedinki iz svake
ogledne grupe prebačeno je 11. i 25. dana u metaboličke kaveze, da bi se
obezbedilo uzimanje uzoraka fecesa u cilju ispitivanja prividne i prave
svarljivosti fosfora...
Phosphorus (P) is an essential mineral for animals, due to its role in
majority of metabolic functions. Bioavailability of P from plant feed is limited,
because P in plants is present in the form of phytic acid or its salts - phytates.
Thus, the inclusion of inorganic phosphorus sources in poultry feed is
necessary in order to ensure optimum amounts of available phosphorus.
Numerous factors affect the level of absorption of the phosphorus from the
complete mixture (concentration of total phosphorus in the diet, ratio of
phytinine and non-phytin component, concentration of calcium in the mixture,
calcium and phosphorus ratio, vitamin D, age and genotype...). The aim of this
trial was to examine the impact of feeding broilers with and without addition of
monocalcium phosphate in complete feed mixture, on production
performances, phosphorus digestibility and health condition of broilers, with a
special focus on bone mineralization. The trial included 300 one-day-old
broilers, both sexes, ...which were randomly divided into three groups – by one
hundred birds each. The experiment lasted 42 days, and was divided into three
periods (days 1 – 21 for starter, days 22 – 35 for grower, and days 36 – 42 for
finisher). One group of broilers (control group) was fed diet without the
addition of MCP (basal diet). The other two groups of broilers received diets
with the addition of two different kinds of MCP (the one was originating from
“Balakovo Mineral Fertilizers”, Balakovo, Russia (O – II experimental group),
and the other one was produced by “Elixir Feed” DOO, Šabac, Serbia (O – I
experimental group)). The production results (average body weight, average
daily gain, feed intake and feed to gain ratio) were monitored during the trial.
At day 11 and day 25, by 10 birds from each group were placed into the
individual balance cages, in order to provide the collection of feces during five
consecutive days...