Lysine levels for pigs in the growing initial-I phase, performance and nitrogen retention

Authors

  • Messias Alves da Trindade Neto Secretaria de Agricultura e Abastecimento do Estado de São Paulo, Agência Paulista de Tecnologia dos Agronegócios, Instituto de Zootecnia, Centro de Pesquisa e Desenvolvimento em Nutrição e Alimentação Animal, Nova Odessa, SP
  • Rodolfo Nascimento Kronka Universidade Estadual Paulista, Faculdade de Ciências Agrárias e Veterinárias, Jaboticabal, SP
  • Hacy Pinto Barbosa Secretaria de Agricultura e Abastecimento do Estado de São Paulo, Agência Paulista de Tecnologia dos Agronegócios, Instituto de Zootecnia, Centro de Pesquisa e Desenvolvimento em Nutrição e Alimentação Animal, Nova Odessa, SP
  • Isabel Marin Petelincar de Sordi Secretaria de Agricultura e Abastecimento do Estado de São Paulo, Agência Paulista de Tecnologia dos Agronegócios, Instituto de Zootecnia, Centro de Pesquisa e Desenvolvimento em Nutrição e Alimentação Animal, Nova Odessa, SP
  • Eliana Aparecida Schammass Secretaria de Agricultura e Abastecimento do Estado de São Paulo, Agência Paulista de Tecnologia dos Agronegócios, Instituto de Zootecnia, Centro de Métodos Quantitativos, Nova Odessa, SP

Keywords:

feed/gain, nitrogen balance, piglets, weight gain

Abstract

Two experiments were effected for to determine the best lysine level for pigs from 6,00 to 11.60kg of live weight. In the first (performance) it was utilized 100 piglets with weight 5.96±0.52kg and in the second (metabolism) 25 piglets with weight 10.80±1.40kg of live weight. The experimental design used was in complete randomized blocks with five treatments and five replications. The experimental units were constituted by four animals in the experiment 1 and one animal in the experiment 2. The treatments were lysine levels (0.85; 0.95; 1.05; 1.15 e 1.25%). There was linear effect increasing live weight gain and reducing the feed/gain as lysine levels increased in diets. The results of performance indicated a higher eficiency of utilization of dietetic lysine with increasing levels. The same effect was observed in the nitrogen retention, in response to increased lysine levels, characterizing a better arrangement in aminoacids balance for the protein synthesis. The Linear Response Plateau model did not adjust the variables. The responses observed indicated that requirement of levels not lower than 1.25% of lysine for piglets from 6 to 11kg. Considering the linear effect obtained in the evaluated characteristics should be recommended that the optimum lysine level be above 1.25%.

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Published

2013-12-03

Issue

Section

ANIMAL NUTRITION

How to Cite

Lysine levels for pigs in the growing initial-I phase, performance and nitrogen retention. (2013). Bulletin of Animal Husbandry, 57(1), 65-74. http://bia.iz.sp.gov.br/index.php/bia/article/view/904

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