Adapting the feed, the animal and the feeding techniques to improve the efficiency and sustainability of monogastric livestock production systems
Adapting the feed, the animal and the feeding techniques to improve the efficiency and sustainability of monogastric livestock production systems

Effects of birth weight and genetic capacity for protein deposition on N-efficiency in growing pigs

Authors: 
Jansman A.J.M., Binnendijk G.P., van der Peet-Schwering C.M.C.
Publication date: 
9 September 2019
Full title: 
Effects of birth weight and genetic capacity for protein deposition on N-efficiency in growing pigs
Publishing information: 
6th EAAP International Symposium on Energy and Protein Metabolism and Nutrition, 9-12 September 2019, Belo Horizonte, Minas Gerais, Brazil
Abstract: 

The aim of the present study was to evaluate the effects of birth weight (BW; low vs. high) and genetic capacity to deposit protein (BV; low vs. high) on N-utilization in growing pigs in a N-balance study over a period of 16-18 weeks of age in a change-over design with two levels of dietary protein supply. High BW pigs had a higher N-intake, urinary N-loss (both P<0.001) and N-retention (P<0.01) compared to low BW pigs of the same age. However, N-efficiency (%) was not affected by BW. Pigs with a high BV had a lower urinary N-excretion and improved efficiency for N-retention (% of N-ingested) (both P<0.05). In conclusion, BW and BV both affect absolute retention of body protein in the grower phase. However, nitrogen efficiency (%) is only influenced by BV but not by BW.

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