Abstract
The nutritional value of hybrid triticale x Agrotriticum (Triticum aestivum x Agropyron) kernels (TW) for broiler chickens was evaluated. An experiment was carried out on 40 threeweek-old broiler chickens, kept in individual cages and allocated to 4 groups, 10 birds per group. Four experimental diets were formulated, two basal wheat- and soyabean meal-based diets, unsupplemented (B) or supplemented with a xylanase preparation (BX) and two diets composed of TW mixed in a 1:1 proportion with basal diets B or BX, the latter supplemented with a β-glucanase preparation at a rate of 1 g per kg of TW. Trypsin inhibitor activity in TW seeds was 1.46 TUI/g, the amino acid composition of protein was similar as triticale protein. Ileal digesta viscosity in the group fed the diet with 50% TW seeds reached 5.1 mPas . s and decreased to 3.1 mPas · s after xylanase and β-glucanase supplementation. The apparent protein, fat and NFE digestibility of TW seeds was 88, 71 and 91%, respectively; protein and fat digestibility increased after enzyme supplementation. It may be concluded that TW seeds can be a valuable component of poultry diets after xylanase and β-glucanase supplementation.
Highlights
Wheat grass (Agrotriticum=Triticum aestivum x Agropyron) is used as a bridging species for the indirect transfer of some useful agrobiological traits, such as resistance to pests, pathogenic agents, environmental stress factors from Agropyron sp. into hexaploid triticale. Arseniuk et al (1998) proved that introgression of Stagnospora nodorum leaf and/or head resistance from Agropyron sp. into the triticale genome is feasible
Smulikowska (1995) reported that in broiler chickens fed with triticale, digesta viscosity was higher than in chickens fed with wheat, but much lower than in chickens fed with rye
The objective of this study was to evaluate the nutritional value for broiler chickens of hybrid kernels of triticale containing wheat grass genes, as well as to evaluate the effect of supplementation with xylanase and β-glucanase on the viscosity of digesta and on nutrient digestibility
Summary
Wheat grass (Agrotriticum=Triticum aestivum x Agropyron) is used as a bridging species for the indirect transfer of some useful agrobiological traits, such as resistance to pests, pathogenic agents, environmental stress factors (drought, low temperatures, salinity) from Agropyron sp. into hexaploid triticale. Arseniuk et al (1998) proved that introgression of Stagnospora nodorum leaf and/or head resistance from Agropyron sp. into the triticale genome is feasible. Wheat grass (Agrotriticum=Triticum aestivum x Agropyron) is used as a bridging species for the indirect transfer of some useful agrobiological traits, such as resistance to pests, pathogenic agents, environmental stress factors (drought, low temperatures, salinity) from Agropyron sp. A very important trait of cereals is the viscosity of non-starch polysaccharides (NSP) in the digestive tract and the possibility of lowering the viscosity by adding enzymes. Smulikowska (1995) reported that in broiler chickens fed with triticale, digesta viscosity was higher than in chickens fed with wheat, but much lower than in chickens fed with rye. The viscosity of digesta decreased, and the metabolizable energy value increased, after supplementation of these cereals with an enzyme preparation containing xylanase and β-glucanase. The way in which the viscous NSP of cereals is inherited is not well understood and has not been studied yet in hybrids of triticale containing wheat grass genes. Little is known about the nutritive value of such hybrids in poultry
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