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  • Title: A study of nutrient digestibility and growth performance of broiler chicks fed hairy and hairless canary seed (Phalaris canariensis L.) products.
    Author: Newkirk RW, Ram JI, Hucl P, Patterson CA, Classen HL.
    Journal: Poult Sci; 2011 Dec; 90(12):2782-9. PubMed ID: 22080017.
    Abstract:
    A nutrient retention study and a growth study were conducted with broiler chickens to evaluate the nutritive value and potential toxicity of 2 hairless canary seed products-hulled seed and groats (cultivar CDC Maria), and one hairy hulled canary seed (cultivar Keet). Each treatment was replicated 6 times (6 groups of 4 birds each). The hairless canary seed groat, hairless hulled canary seed, and the hairy hulled canary seed contained 24.5, 21.8, and 16.3% CP; 7.1, 5.8, and 6.6% ether extract; 1.5, 14.2, and 12.3% acid detergent fiber, and 3,867, 3,205 and 3,292 kcal/kg of AME(n), on a DM basis, respectively. The hairless canary seed groat, hairless hulled canary seed, and the hairy hulled canary seed protein comprised, respectively, 0.49, 0.33, and 0.33% lysine (DM basis), which was 79, 78, and 67% digestible (apparent ileal); 0.65, 0.53, and 0.60% cysteine (DM basis), which was 86, 87, and 85% apparent ileal digestible; and 0.40, 0.30, and 0.25% methionine (DM basis), which was 89, 90, and 86% apparent ileal digestible. In the second study, a 35-d feeding study with male broiler chickens was conducted. The canary seed products were compared with a Canadian Western Red Spring wheat control. Each treatment was replicated 6 times (6 groups of 4 birds each). The test ingredients comprised 50% of the corn/soybean diets. The birds fed the hulled canary seed (hairy or hairless) had similar weight gain, feed intake, and G:F to those fed wheat. There were no statistically significant (P = 0.05) differences in the weights of the bursa, heart, kidneys, liver, spleen, or the pancreas, nor was there any effect on serum lactate dehydrogenase or creatine kinase. The data indicated that feeding hulled canary seed increased the number of gizzard ulcers (P < 0.01). It was concluded that canary seed does not contain anti-nutritional components that negatively affect broiler performance or bird health. However, the canary seed hulls may damage the gizzard lining.
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