Reduction of the crude protein content of diets supplemented with essential amino acids for piglets weighing 15 to 30 kilograms

Published on: 03/07/2019
Author/s : Juliana Beatriz Toledo 1, Antonio Claudio Furlan 2, Paulo Cesar Pozza 2, Jocasta Carraro 3, Gabriel Moresco 3, Silvia Letícia Ferreira 3, Adriana Gomez Gallego 1. / 1 Programa de Pós-graduação em Zootecnia, Universidade Estadual de Maringá, Maringá - PR, Brasil; 2 Departamento de Zootecnia, Universidade Estadual de Maringá, Maringá - PR, Brasil; 3 Curso de Zootecnia, Universidade Estadual de Maringá, Maringá - PR, Brasil.

Introduction The intensive pig rearing system originates large amounts of waste; therefore, there is a great concern regarding the improvement of productivity and prevention of contamination of the environment with the waste. The nitrogen concentration in manure is relatively high and the excess is converted into substances like nitrate and ammonia, which are harmful to the environment, to the pe...

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March 7, 2019

The proposed study has merit. However, I think that in the case of piglets in the nursery phase, the number of repetitions (6) was low, considering that only two animals per experimental unit were used. A second consideration is the lack of reference treatment, where the lysine level would be obtained without the addition of synthetic lysine. A third consideration is regarding Figure 1, where the representation of LRP does not seem adequate.

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Jon Bergstrom
Jon Bergstrom
Swine Nutrition & Production, Ph.D.
  Plano, Texas, United States
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