Digestibility of the cottonseed meal with or without addition of protease and phytase enzymes in swine diet

Izaura Maria Barros De Lorena-Rezende,Carlos Boa-Viagem Rabello,Maria Do Carmo Mouhaupt Marques Ludke,Wilson Moreira Dutra Junior,Liliane Olimpio Palhares,Fabio Monteiro Rezende

doi:10.4025/actascianimsci.v34i3.12360

Izaura Maria Barros De Lorena-Rezende, Carlos Boa-Viagem Rabello + Show 4 more

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https://doi.org/10.4025/actascianimsci.v34i3.12360

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Abstract

This study evaluated the digestibility of cottonseed meal with or without addition of enzymes (phytase and protease) for growing pigs. It was used 18 barrows, housed in metabolism cages, distributed in a completely randomized design, standardizing body weight (bw) with average of 25.8 ± 3.6 kg, with three treatments and six repetitions. The treatments consisted of a reference diet based on corn and soybean meal, the second treatment with replacement of 30% of the reference diet by cottonseed meal without enzymes, and the third with 30% of the reference diet replaced by cottonseed meal with added enzymes. Was determined the digestible protein, digestible energy, digestibility of dry matter, energy and protein. It was also registered the balance of nitrogen and phosphorus. The use of cottonseed meal with the addition of enzymes in diets for growing pigs has no effect on the digestibility of dry matter, gross energy and crude protein, but improved the absorption of phosphorus, consequently reducing its excretion in the feces. There was no improvement in nitrogen balance in the diets containing cottonseed meal with enzymes.

Highlights

The frequent periods of instability, especially due to the high prices of ingredients that compound the rations, contribute to the need of introducing alternative ingredients that can solve and promote improvement in the meat quality and a reduction in the production cost (TRINDADE NETO et al, 1995).In this search for alternative ingredients, Brazil stands out by being the fourth largest producer and exporter of cotton, with a cultivated area of 1,390.7Acta Scientiarum
The use of cottonseed meal can reduce the costs with rations, but on the other hand, because it is less digestible than soybean and has variable amount of non-starch polysaccharides (NSP), Maringá, v. 34, n. 3, p. 259-265, July-Sept., 2012 it can cause adverse effect on consumption and physiological changes that alter the use of nutrients (LI et al, 1996)
This value is below the limit recommended by Gamboa et al (2001) that affirm that the maximum acceptable value of free gossypol in cottonseed meal used in swine’s diet is up to 100 ppm

Summary

Introduction

The frequent periods of instability, especially due to the high prices of ingredients that compound the rations, contribute to the need of introducing alternative ingredients that can solve and promote improvement in the meat quality and a reduction in the production cost (TRINDADE NETO et al, 1995).In this search for alternative ingredients, Brazil stands out by being the fourth largest producer and exporter of cotton, with a cultivated area of 1,390.7Acta Scientiarum. The frequent periods of instability, especially due to the high prices of ingredients that compound the rations, contribute to the need of introducing alternative ingredients that can solve and promote improvement in the meat quality and a reduction in the production cost (TRINDADE NETO et al, 1995). 259-265, July-Sept., 2012 it can cause adverse effect on consumption and physiological changes that alter the use of nutrients (LI et al, 1996) These NSP are resistant to hydrolysis in the digestive tract of non-ruminant animal, representing two problems: reduce the amount of energy for the animal and interfere in the use of other nutrients of the diet. These facts take place because these animals do not synthesize the enzymes necessary for digestion of certain compounds

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