Effect of fattening of entire male pigs on environmental safety
2003
Stoikiv, A. (National Centre for Agratian Science, Sofia (Bulgaria))
A trial was carried out with two groups of Shumen hybrid pigs in accordance with Oslage methodology. It encompassed an equal number of boars (group I) and male castrates (group II) of similar origin and body weight. During fattening from 30 to 100 kg, they were fed a mixture containing 13.2 MJ/kg digestible energy, 143.5 protein, 0.68% lysine, 0.75% calcium, 0.64% phosphorus. Comparative data showed that feed consumption per kg/gain in boars was 2.950 kg and in castrates 3.150 kg. Entire males reached 100 kg body weight 8.2 days earlier than castrates. Boars deposited 16.45%, 18.63% less fat and energy, respectively (P
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