PRODUCTIVITY OF SUCKLING AND GROWING PIGS FROM EAST BALKAN BREED AND ITS CROSSES IN FEEDING WITH ORGANIC FEEDS

Y. Marchev, N. Palova, R. Nedeva, D. Krusheva

Abstract: The study was carried out in Experimental station of agriculture – Sredets in 2015 in two stages. In the first stage analysis was performed of conventionally and organically produced feed grains – wheat and barley, for a dry content and organic matter, protein, fiber, fat, minerals, calcium and phosphorus. The second stage of the study was conducted with 20 pigs of different origin, divided into two groups. The first group included pure-bred pigs from East Balkan breed and the second – crosses between sows from East Balkan breed and boars from Danube white breed. After reaching of 25 days of age to the weaning pigs were fed with organically produced feed milled by increasing the amount
from 0.1 kg/pig to 0.3 kg/pig. During the growing period up to 120 days of age pigs in both groups were raised by traditional technology on pasture and fed with the same feed by increasing the amount from 0.3 kg/pig to 0.8 kg/pig.
The results showed that organically produced feed (barley and wheat) is comparable to that of conventional one and can be successfully used in the feeding of pigs from East Balkan breed and its crosses. The origin of the pigs has a determinate influence on the intensity of growth. Pigs crossings of origin East Balkan swine x Danube white have realized significantly (p ≤ 0.001), higher average daily gain (263 g), compared with pure-bred pigs (221 g).

Keywords: growing pigs; organic feed; origin; productivity

Date published: 2018-05-28