Intensive pig breeding implies, among other things, the use of complete mixes
in their diet in correspondence with the animals? age and purpose. In the
course of a threeyear period (2007-2009) the accredited laboratory of the
Department for Nutrition and Botanics of the Faculty for Veterinary Medicine,
Univerisity of Belgrade, analysed 65 fodder mix samples from the territory of
Serbia intended for the diet of all categories of pigs, namely: 6 samples of
complete mixes for the diet of pregnant sows and gilts, 9 samples of complete
mixes for the diet of nursing sows and boar, 4 samples of complete mixes for
enhanced diet of piglets, 13 samples of complete mixes for piglets in
programme I up to 15 kg, 12 samples of complete mixes for piglets in
programme II from 15-25 kg, 10 samples of complete mixes for growing pigs in
fattening programme I from 25-60 kg, and 11 samples of complete mixes for
pigs in fattening programme II from 60-100 kg. The analyses covered the
contents of the elementary nutritive matter and the obtained results were
compared with the quality conditions prescribed under the Regulations on the
quality of animal feed (Official Gazette of the Republic of Serbia No.
41/09). It was established that there were certain deviations with regard to
the values presented in the Regulations on the quality of animal feed
(Official Gazette of the Republic of Serbia No. 41/09) in the average protein
content in complete mixes for piglet diet II, 15-25 kg (17.89?1.19%) and in
the mixes for growing pig diet II, 60-100 kg (13.95?0.53%). The established
average fat content was lower in the mixes for enhanced piglet diet (5.99?
0.72%) and in mixes for piglet diet I, up to 15 kg (4.95?1.41%). A higher
average cellulose content (4.08?0.73%) was established in mixes for enhanced
piglet diet. Furthermore, significant differences from the values prescribed
under the Regulations were established in certain samples. The established
differences in the chemical composition of certain samples of the examined
mixes without a doubt indicate the need for constant and multilevel
monitoring of raw materials and finished products in order to preserve health
and to ensure the best possible utilization of the production potential of
animals.