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Régime graine de moutarde contre graine de colza (Canola) chez le porc à l`engraissement
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Les porcs à l`engraissement ont des exigences particulières en matière de régime alimentaire. Dans cette étude Canadienne, un repas à base soit de graines de moutarde (Brassica juncea), soit de graines de colza Canola classiques a été distribué à hauteur de 15% de la ration des porcs en croissance à partir de 28 jours. Résultat: les porcs nourris à la graine de moutarde (moins chère) ont présenté un gain de GMQ de 5%, un gain de l`efficacité alimentaire de 2,5%, et une conservation de l`indice de consommation par rapport aux porcs nourris à la graine de colza.
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Mustard meal might be a valuable ingredient for the swine industry domestically and internationally. In some export markets, concerns exist regarding the voluntary feed intake of pigs fed mustard instead of canola meal in their diets.
This study will therefore compare two diets with either mustard meal or canola meal in the diet at a 15% inclusion rate, which is an inclusion rate that should allow to assess if the feed intake concerns are indeed valid, or not and if growth performance differences exist.
A diet containing 15% canola meal was formulated based on 48% corn, 17% soybean meal and 15% wheat was formulated to 3.45 Mcal DE/kg and 2.60 g apparent digestible lysine/Mcal DE. Replacing canola meal 1:1 with mustard meal created a diet containing 15% mustard meal. The pelleted diets were each fed for 28 days to grower pigs housed 5 pigs per pen.
For each of the four weeks of the experiment, voluntary or average daily feed intake of the grower pigs increased gradually, and differences in voluntary feed intake were not observed between pigs fed mustard meal or canola meal.
For the first three weeks of the experiment, average daily gain and feed efficiency did not differ statistically between pigs fed mustard meal or canola meal (P > 0.10).
However, pigs fed mustard meal grew 17% more and had a 6-% unit higher feed efficiency during the last week of the experiment (P < 0.05), resulting in an overall tendency for pigs fed mustard meal to grow faster than pigs fed canola meal.
Mustard meal has a nutritional value equal or superior to that of canola meal and might be a worthwhile opportunity ingredient to consider during period of high prices for protein sources.
Source: R.T. Zijlstra and J.F. Patience: Performance of Grower Pigs Fed Mustard Meal and Canola Meal Diets; www.thepigsite.com
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