Lysine levels for pigs in the growing initial-II phase, performance and nitrogen retention; in finishing subsequent effects

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
  • Izabel 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 retention, piglets, weight gain

Abstract

Two experiments were conducted in order to determine the better lysine level for pigs from 10.50 e 19.70kg of live weight. In the first (performance) it was used 100 piglets weighing 10.50±1.34kg and in the second (metabolism) 25 piglets with weighing 18.20±1.54kg of live weight. The experimental design used was in complete randomized block 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 (0.80; 0.90; 1.00; 1.10 e 1.20%). There was linear effect (P<0.01) increasing weight gain and reducing the feed/gain as lysine level in diets increased. The results of performance indicated a better eficiency of utilization of lysine as the dietetic levels increased. Similar effect (P<0.01) was observed in nitrogen retention, in response to increased of levels lysine, characterizing the better arrangement in aminoacids balance in the protein synthesis. The LRP model did not fit to the variables studied. The responses observed indicated that the requirement levels should not be lower than 1.20% of lysine for the piglets. Considering the linear effect in the evaluated characteristics it is recommended that the optimum lysine level should be above 1.20%.

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Published

2013-12-03

Issue

Section

ANIMAL NUTRITION

How to Cite

Lysine levels for pigs in the growing initial-II phase, performance and nitrogen retention; in finishing subsequent effects. (2013). Bulletin of Animal Husbandry, 57(1), 75-84. http://bia.iz.sp.gov.br/index.php/bia/article/view/905

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