Effect of dietary energy and weaning weight on nitrogen balance and energy metabolizability of piglets

This study aimed to evaluate the effects of dietary metabolizable energy (ME; 3.40, 3.60, or 3.80 Mcal/kg) and weaning weight (WW; 4.5 ± 0.4 and 6.7 ± 0.5 kg) on nitrogen balance (NB) and gross energy metabolizability in weanling piglets. In total, 32 barrow piglets were individually housed in metab...

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Bibliographic Details
Published in:Ciência animal brasileira 2018-10, Vol.19, p.1-10
Main Authors: Marcia de Souza Vieira, Marcelo Luiz Somensi, Anna Mikaela Batista, Victoria Yasmin Domingues
Format: Article
Language:English
Online Access:Get full text
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Summary:This study aimed to evaluate the effects of dietary metabolizable energy (ME; 3.40, 3.60, or 3.80 Mcal/kg) and weaning weight (WW; 4.5 ± 0.4 and 6.7 ± 0.5 kg) on nitrogen balance (NB) and gross energy metabolizability in weanling piglets. In total, 32 barrow piglets were individually housed in metabolic cages for 28 d in a 2x3 factorial arrangement with five barrows per treatment. Only light and 3.80 ME and heavy and 3.40 ME/kg treatments had six barrows per treatment each. The diets were formulated to maintain a constant nutrient to ME ratio. Nitrogen balance was evaluated in three periods through total collection of feces and urine. Heavy piglets had 14% greater N intake, absorption, and retention in starter and total periods (P
ISSN:1518-2797
1809-6891
DOI:10.1590/cab19049548