[Investigations of the lysine requirement of fattening boars in dependence on their performance. 3. Influence of energy consumption on the fat and protein retention of the boars].
The results of the carcass analysis show a distinct influence of the duration of keeping on protein retention. The protein percentage was highest with those animals whose lysine requirement was met 100%. A lysine supplement of 20% of the valid norm had no infuence on the percental protein content. In both cases (100% and 120%) 17.1% protein were determined in the carcass. Concerning the daily protein retention, boars whose protein requirement wes met 120% and with a live weight of more than 90 kg achieved more favourable results than those of the norm variant. Up to 90 kg live weight no difference between the two variants could be detected. Animals which received feed rich in energy showed a very high daily protein retention during the first third of the fattening period, which decreased relatively much, however, in the course of growth.
D000818:Animals; D001835:Body Weight; D004044:Dietary Proteins / Q000378:metabolism; D004734:Energy Metabolism; D008239:Lysine / Q000378:metabolism*; D013552:Swine / Q000378:metabolism*
D004044:Dietary Proteins; D008239:Lysine
Untersuchungen zum leistungsabhängigen Lysinbedarf von Mastebern. 3. Mitteilung. Einfluss des Aminosäuren- und Engergieverzehrs auf den Fett- und Eiweissansatz der Eber.