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Master Thesis

Effects of canola leal juncea meal and addition of enzymes on growth performance and carcass composition of female turkeys up to 70 days-of-age

Abstract : Maximum dietary level of modern black-seeded canola (Brassica napus) meal (CM) and yellow-seeded juncea (Brassica juncea) meal (JM) needs to be established for turkeys. No study has yet evaluated the effects of CM or JM, at variables dietary level, an enzymes addition on growth performance and carcass composition of turkeys. This trial evaluated the effects of canola and juncea meal fed at 0, 10, 20, and 30% of the diet with and without Superzyme-OMTM on growth performance and carcass composition of turkeys. The 1152 Hyline Converter female turkey hens were randomly divided into 64 floor pens. Wheat based diets were formulated to contain 0, 10, 20 or 30% CM or JM with or without multicarbohydrase enzymes. Body weight (BW), feed intake (FI) and feed conversion ratio (FCR) were calculated per pen for the four starter (0 to14 days), grower I (15 to 28), grower II (29 to 56) and finisher (57 to 70) phases. Two carcasses per pen were analyzed (dry matter, ash, crude protein and crude fat). The experimental design was a 2×4×2 factorial (meals×levels×enzymes). There was an increase in FI and deterioration in FCR (p ≤0.05) with CM, perhaps due to lower metabolisable energy in CM than JM or level of glucosinolate higher in JM. There were no effects of level on growth performance of turkeys. There was improvement BW with addition of enzymes during the four phases (p ≤0.05). Globally, no effect on carcass composition occured.CM and JM included up to 30% in wheat based diets produced excellent growth performance in turkeys. The 30% CM or JM diets were more profitable than 0% diets.
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Jennifer Roux. Effects of canola leal juncea meal and addition of enzymes on growth performance and carcass composition of female turkeys up to 70 days-of-age. Agricultural sciences. 2012. ⟨dumas-00801287⟩

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