Pelleting of feed for broiler chickens: Factors affecting pellet quality

Authors

  • Daniel José Antoniol Miranda Universidade Federal de Minas Gerais, Escola de Veterinária, Departamento de Zootecnia, Belo Horizonte, MG
  • Leonardo José Camargos Lara Universidade Federal de Minas Gerais, Escola de Veterinária, Departamento de Zootecnia, Belo Horizonte, MG
  • Mariana André Pompeu Universidade Federal de Minas Gerais, Escola de Veterinária, Departamento de Zootecnia, Belo Horizonte, MG
  • Vanessa Michalsky Barbosa Universidade Federal de Minas Gerais, Escola de Veterinária, Departamento de Zootecnia, Belo Horizonte, MG
  • Júlia Sampaio Rodrigues Rocha Universidade Federal de Minas Gerais, Escola de Veterinária, Departamento de Zootecnia, Belo Horizonte, MG
  • Diogo de Moraes Cardoso Universidade Federal de Minas Gerais, Escola de Veterinária, Departamento de Zootecnia, Belo Horizonte, MG

Keywords:

diameter, geometric diameter, energy level

Abstract

The efficiency of the pellet can be translated by the quality of the pellet which is defined as the proportion of intact pellets that come to feeders for chickens, i.e., its resistance to breakage between the feed mill and farms. The use of diets with a higher percentage of intact pellets results in better performance of birds when compared with the feed rations. The main factors that affect pellet quality are: characteristics of pelleting, the feed composition, particle size, pelleting temperature, moisture and steam injection. From a nutritional standpoint, one can consider that the smaller the particle size of food increased their contact with the digestive juices, which aids digestion and absorption of nutrients. However, finely ground lead to less stimulation and growth of intestinal ephitellium. But from the standpoint of production of feed, the larger the particle size of ingredients largest economy with energy and greater efficiency (tons / hour) milling. Because of this, it is suggested that the particle sizes used vary between 500 and 700 ìm to not to cause loss of performance of the birds, nor the income from the factory. Increased energy, through the addition of oils and fats, have much influence on performance parameters of broilers and the quality of the pellet produced. The presence of oils and / or fat, depending on the amount, on its hydrophoby characteristic, causing damage to the particles aggregation acting as a lubricant between food particles and the matrix of pelleting, decreasing the pelleting pressure and its gelatinization, resulting into poor quality pellets.

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Published

2011-01-12

Issue

Section

ANIMAL NUTRITION

How to Cite

Pelleting of feed for broiler chickens: Factors affecting pellet quality. (2011). Bulletin of Animal Husbandry, 68(1), 81-92. http://bia.iz.sp.gov.br/index.php/bia/article/view/1064

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