Supplementation of diets for weaned piglets withL-Valine and L-Glutamine+ L-Glutamic acid

Authors

  • Naiara Diedrich Rodrigues MCassab – Nutrição Animal, São Paulo, SP
  • Ana Maria Bridi Universidade Estadual de Londrina, Departamento de Zootecnia, Londrina, PR
  • Eduardo Nogueira Ajinomoto Animal Nutrition, Limeira, SP, Brasil
  • Eduardo Raele Oliveira Universidade Estadual de Londrina, Departamento de Zootecnia, Londrina, PR
  • Roberta Abrami Monteiro Silva Universidade Estadual de Londrina, Departamento de Zootecnia, Londrina, PR
  • Arturo Pardo Lozano Universidade Estadual de Londrina, Departamento de Zootecnia, Londrina, PR
  • Aliny Ketlim Novais Universidade Estadual de Londrina, Departamento de Zootecnia, Londrina, PR
  • Giovani Frederico Universidade Estadual de Londrina, Departamento de Zootecnia, Londrina, PR
  • Caio Abercio da Silva Universidade Estadual de Londrina, Departamento de Zootecnia, Londrina, PR

DOI:

https://doi.org/10.17523/bia.v72n3p251

Keywords:

nursery, performance, intestine, pigs.

Abstract

The objective of this study was to evaluate the effects of supplementation of diets for weaned piglets with L-valine and L-glutamine + L-glutamic acid on performance, frequency of diarrhea, organ weight, digesta pH, intestinal morphology, and economic viability. Seventy-two piglets with a live weight of 7.53 ± 0.84 kg and 24 days of age were used. The animals were submitted to the following four treatments from 24 to 46 days of age: diet not supplemented with amino acids (control diet, CD); diet supplemented with glutamine + glutamic acid (GD); diet supplemented with glutamine + glutamic acid + valine (GVD), and diet supplemented with valine (VD). Two sequential phases (pre-initial I and pre-initial II) with a duration of 12 and 11 days, respectively, were established. A completely randomized design, consisting of six repetitions and three pigs per experimental unit, was used. Nine days after weaning, at 32 days of age, a piglet per pen was slaughtered for the evaluation of organ weight, digesta pH and intestinal morphology. All animals received a single diet from days 47 to 65. No effects on performance were observed during the pre-initial phases I and II; however, when the whole study period was considered (24 to 65 days of age), piglets fed GVD consumed less feed and exhibited better feed conversion than animals of the VD group. With respect to morphometric parameters, GD provided a greater ileal crypt depth than CD and VD. There was an economic advantage of diets supplemented with L-valine and L-glutamine + L-glutamic acid, validating their use in diets for weaned piglets until 46 days of age.

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Published

2015-10-05

Issue

Section

ANIMAL NUTRITION

How to Cite

Supplementation of diets for weaned piglets withL-Valine and L-Glutamine+ L-Glutamic acid. (2015). Bulletin of Animal Husbandry, 72(3), 251-260. https://doi.org/10.17523/bia.v72n3p251

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