doiSerbia

The effect of different phosphorus sources on body weight and weight gain in fattening chickens

Radović Vera (Agronomski fakultet, Čačak)
Rajić Isidor (Fakultet veterinarske medicine, Beograd)
Stanić Dušan (Agrobusiness, Novi Sad)
Nadaždin Milivoje (Fakultet veterinarske medicine, Beograd)

The aim of the investigations was to compare the utilization of phosphorus from different sources: from dicalcium phosphate, monocalcium phosphate with and without phytase enzyme, at a reduced level of the phosphorus source mentioned. The investigation was conducted on the total of 440 fattening chickens of the Arbor Acres strain divided into 4 groups according to the phosphorus source: K-group (110 chickens-dicalcium phosphate 2%); O-I-group (110 chickens monocalcium phosphate 1.4 %); O-II-group (110 chickens-dicalcium phosphate 1% + 0.1% phytase) and O-III-group (110 chickens monocalcium-phosphate 0.7 % + 0.1 % phytase). The trial on the chickens nutrition lasted 42 days. Production traits, i.e. body weight and weight gain, were used as phosphorus utilization criteria in this paper. The study results showed that the highest production results (P<0.05) were obtained with the chickens fed 0.1 % phytase feed supplements at a reduced level of the mineral phosphorus source.

Keywords: poultry, fattening of chickens, phosphorus sources, phytase, weight gain