Abstract
This study aimed to evaluate the effect of dietary levels of canola meal on carcass yield, fatty acids profile, physical characteristics, chemical and sensory composition of breast meat of broilers. A total of 300 one-day-old, both sexes, Cobb broilers were assigned to a completely randomized design with five treatments and six replicates of ten birds each. Birds were given 0, 25, 50, 75 and 100% canola meal in place of soybean meal in the diet. After 42 days, four birds per replicate were slaughtered to analyze the carcass yield and the breast was used for analysis of fatty acid profile, sensory analysis and chemical and physical composition. The fatty acid profile was influenced by increasing levels of canola meal, decreasing (p 0.05) with 100% replacement and the hardness decreased (p < 0.05). Canola meal can replace soybean meal up to the level of 25% without affecting carcass yield and chemical, instrumental and sensory analysis of meat.
Highlights
The use of canola meal derived from double zero, low-glucosinolate, and low-erucic acid varieties of rapeseed in monogastric animal nutrition is limited due to the low energy content available and the presence of anti-nutritional factors, including glucosinolates, sinapine, phytate and dietary fiber components, such as tannins or nonstarch polysaccharides (Khajali & Slominski, 2012). the canola meal has protein content ranging from 34 to 38%, it has an amino acid profile similar to that of soybean meal
The replacement of soybean meal with canola meal could reduce the cost of animal feed for the farmer, if there is no impact on the performance and physical characteristics of meat
Lysine is directly related to protein synthesis in breast muscle, and even though, lysine availability is lower in canola meal
Summary
The canola meal has protein content ranging from 34 to 38%, it has an amino acid profile similar to that of soybean meal. Animal Sciences meal between 150 and 200 g kg-1 in the diet for broilers reported no adverse effects on the performance (Ahmad, Mirza, & Ahmad, 2007). The replacement of soybean meal with canola meal could reduce the cost of animal feed for the farmer, if there is no impact on the performance and physical characteristics of meat. There is little information on the use of canola meal in broiler diets and its influence on the meat characteristics. Since its inclusion may interfere with the fatty acid profile of the diet and, possibly of the meat, studies that go beyond the examination of animal performance are needed
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