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Crude protein levels for intact male pigs from 30 to 60 kg liveweight

, : Crude protein levels for intact male pigs from 30 to 60 kg liveweight. Revista da Sociedade Brasileira de Zootecnia 22(2): 287-292

An experiment was conducted using 40 Landrace pigs to determine the crude protein (CP) requirements for intact growing male pigs between 30 and 60 kg liveweight. The experimental design was a randomized block with five treatments (14, 16, 18, 20, and 22% of CP), four replications, and two animals per experimental unit. There was a quadratic effect of CP on the average daily gain (ADG) (P lt 0.06) which increased up to the level of 20.74% protein and on the feed/gain (F/G) (P lt 0.01) which improved to a level of 29.63% CP. There was no effect (P gt 0.06) of CP level on feed intake. Based on ADG and F/G results, it was concluded that intact male pigs required 20.74% CP for maximum performance.


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