Abstract

Simple SummaryPig diets are primarily composed of cereal-based ingredients and contain soybean meal as the main protein source. A growing trend for increased protein requirements has been noted in animal nutrition. The price of extracted soybean meal fluctuates significantly, hence it is worth replacing it with mixtures based on domestic sources of protein. One of the factors that have a direct impact on the quality of meat is animal nutrition. The aim of this work was to assess the impact of a total dietary replacement of extracted soybean meal (SBM) on the body weight gain and pork quality. The fattening pigs, which were offered diets based on SBM, had similar raw meat parameters as the pigs which were fed diets based on legumes and rapeseed as protein sources.The aim of this work was to assess the impact of a total dietary replacement of extracted soybean meal (SBM) on body weight gain and pork quality. DanBred hybrid piglets were divided into four groups of 10 piglets each. Groups I (males) and II (females) were the control groups and fed a standardized SBM-based complete feed. The experimental groups III (males) and IV (females) were offered a diet in which the SBM was replaced with extracted rapeseed meal (RSM) and legume plants (pea and yellow lupin). After 83 days of fattening, the animals were slaughtered. Based on the collected data, the daily weight gain (DWG), feed intake (FI), and feed conversion ratio (FCR) were calculated. In addition, longissimus dorsi muscle was subjected to physicochemical analyses, including the basic chemical composition. All the analyses were performed in accordance with the applicable methodologies. As a result of this experiment, no interactions were found between the experimental factors (sex and diet). The replacement of SMB by legumes and RSM resulted in a significant reduction in the final body weight of growing–finishing pigs. Additionally, daily body weight gain was reduced between 35–83 days, and through the whole fattening period (0–83 days). Most pork meat quality parameters were not affected by the type of mix feed and sex (p > 0.05). The fattening pigs that were fed legume seeds and RSM had significantly reduced fatness (p > 0.05) compared to the control pigs. In males, there was also a significantly lower pH45 (p < 0.05). It can be concluded that feeding pigs with diets containing legume plants and extracted rapeseed meal does not affect the pork meat quality, but it may worsen the body weight gain.

Highlights

  • The animal diet is an environmental factor which directly influences meat quality

  • The highest crude protein (CP) content was found in soybean meal (SBM) content, with 465 g/kg dry matter (DM) whereas the lowest

  • The highest NDF concentration was observed in yellow lupin seeds (245 g/kg DM), whereas the lowest ADF levels were found in SBM (79 g/kg DM) and peas (92 g/kg DM)

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Summary

Introduction

The animal diet is an environmental factor which directly influences meat quality. According to Aaslyng and Hviid [1], meat quality is characterized by such parameters as: pH, color, taste, succulence, and tenderness.The meat chemical composition (crude protein percentage, fat, carbohydrates, and water content) is one of the major features that translates to meat value. The animal diet is an environmental factor which directly influences meat quality. According to Aaslyng and Hviid [1], meat quality is characterized by such parameters as: pH, color, taste, succulence, and tenderness. The meat chemical composition (crude protein percentage, fat, carbohydrates, and water content) is one of the major features that translates to meat value. Pig diets are primarily composed of cereal-based ingredients and contain soybean meal (SBM) as the main protein source. It should be noted that a demand for protein in livestock nutrition has increased. The domestic production of legume plants, including pea, lupin (white, yellow, narrow-leaved), faba bean, and soy, covers only

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