EQUATIONS TO PREDICT THE METABOLIZABLE ENERGY OF MEAT AND BONE MEAL FOR GROWING PIGS

Newton Tavares Escocard De Oliveira,Ricardo Vianna Nunes,Cleiton Pagliari Sangali,Ricardo Araújo Castilho,Carolina Natali Langer,Paulo Cesar Pozza

doi:10.1590/s1413-70542015000600003

Newton Tavares Escocard De Oliveira, Ricardo Vianna Nunes + Show 4 more

Open Access

https://doi.org/10.1590/s1413-70542015000600003

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Abstract

ABSTRACT The prediction of metabolizable energy (ME) of meat and bone meal (MBM) for pigs is an interesting tool, however, used models to predict these values must be validated in order to garantee higher precision. The aim of this study was to determine the chemical and energetic composition of different types of MBM for pigs and to adjust and validate models to better predict the ME based on the chemical composition. Thirty-two barrows, averaging an initial weight of 26.75 ± 1.45 kg, were individually allotted in a randomized block design with eight treatments and four replicates. The treatments consisted of seven types of MBM that replaced 20% of the basal diet. A stepwise procedure was the statistical procedure used to adjust the prediction equations and the ME was the dependent parameter. The validation of the adjusted models was performed using an independent databank of chemical and energetic composition of theBrazilian and international MBM. The metabolizable energy of different meat and bone meals ranged from 1645 to 2645 kcal kg-1. The equations that provide a good prediction of metabolizable energy of meat and bone meal for swine in Brazil are EM1 = -4233.58 + 0.4134GE + 72CP + 89.62ash - 159.06Ca; EM2 = 2087.49 + 0.3446GE + 31.82ash - 189.18Ca; EM3 = 2140.13 + 0.3845GE - 112.33Ca; EM4 = -346.58 + 0.656GE; EM5 = 3221.27 + 178.96fat - 76.55ash; and EM6 = 5356.45 - 84.75ash.

Highlights

Swine diets basically consist of corn and soybean meal, but alternative ingredients, such as meat and bone meal (MBM), can be obtained in industrialized slaughterhouses units and utilized
The treatments consisted of seven types of MBMthat replaced 20% of the basal diet (Table 1) and were formulated to achieve the nutritional requirements proposed by Rostagno et al (2011)
The average crude protein (CP) content (Table 2) ranged from 40.73 to 50.28% and is close to the values proposed by Rostagno et al (2011), which classified the MBMs into nine groups according to protein content (36, 38, 41, 44, 46, 48, 50, 55 and 63% CP)

Summary

Introduction

Swine diets basically consist of corn and soybean meal, but alternative ingredients, such as meat and bone meal (MBM), can be obtained in industrialized slaughterhouses units and utilized. To formulate more efficient diets for pigs and adequately provide nutritional requirements, adequate knowledgeof the energetic values of the feedstuffs is necessary and can be determined by direct and indirect methods. Direct or conventional methods require a calorimeter and require metabolic assays, which are laborious, time consuming and costly methodologies and difficult for the industry to use (Sakomura;Rostagno, 2007; Pozza et al, 2008). Equations to predict metabolizable energy (ME) utilize an indirect method, which is based on the chemical composition of the raw material routinely obtained in laboratories and isconsidered a fast, practical. Agrotec., Lavras, v. 39, n. 6, p. 565-573, nov./dez., 2015

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