The Effect of Partial Maize Substitution with By-Products in Piglet Nutrition
I. Productive Results

1 University Ss. Clement of Ohrid, Faculty of Veterinary Science, 7000 Bitola, Republic of Macedonia
2 University Ss. Cyril and Methodius, Institute of Animal Science, 1000 Skopje, Republic of Macedonia


CILEV, G., Z. GACOVSKI, B. PETROVSKA and N. PACINOVSKI, 2016. The effect of partial maize substitution with by-products in piglet nutrition. I. Productive results. Bulg. J. Agric. Sci., 22: 829–835

A large amount of agriculture’s by-products are produced by food industries of R.Macedonia. The aim of this experiment was examine the possibilities of the maize’s substitution as an energetic nutrient with by-products obtained by manufacturing tomatoes, peppers and grapes in the nutrition of weaned piglets on the production results. The researches were conducted in the producing conditions at pigs farm ZZ “Edinstvo” in the village of Chelopek near by the town of Tetovo, R. Macedonia where were organized experiment in a group controlled system. The experiment is carried out on piglets after weaning in a period of 28-30 days with an average body weight of 8.66±0.21 kg (K); 8.79±0.20 kg (O-I) and 8.84±0.19 kg (O-II). For the experiment used mongrels of Swedish and Dutch races with equalized genetical potential. Each group in experiment consist of equal number of males and females.
The experiment of the weaned piglets is carried out on 72 piglets divided into 3 groups with each group having 12 piglets of different sex. The experiment lasted for 42 days in 2 phases with 21 days each phase. In the experiment were used 2 mixtures for weaned piglets (8–15 kg) from 1–21 days and the whole mixture for piglets in breeding (15–25 kg) in a period of 21–42 days of the experiment (NRC, 2000).
The piglets from the control group (K) from experiment were fed with mixture without a share from the examined by-products, whereas the experimental groups (O-I and O-II) were fed with food with substitution of the maize with different qualities of the above mentioned by-products. In the piglets feeding mixture-3% (O-I) i.e.6% (O-II) from the examined by-products.
Average Body Weight (ABW) in the control group (K) and experimental groups (O-I and O-II) in the end of the growing period (42 day) were 26.98 kg-K, 27.37 kg-O-I and 26.02 kg-O-II, respectively. Average Daily Gain (ADG) and Average Feed Conversion (AFC) in the control group (K) and experimental groups (O-I and O-II) for all period (1–42 days) were (436 g vs 1.51 kg-K), (445 g vs 1.50 kg-O-I) and (409 g vs 1.47 kg-O-II). No signifi cant difference was observed in all three groups (p > 0.05).
Maize’s partial substitution with a by-products obtained by manufacturing tomatoes, peppers and grapes especially in the amount of 3% does not have any negative effects in the production results on a weaned piglets.

Key words: nutrition, weaned piglets, by-products obtained by manufacturing tomatoes, peppers and grapes, production results

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