Обменна енергия в сушени плодове от облепиха (Hippophaes rhamnoides) за пилета бройлери

The aim of the experiment was to assess the content of N-corrected apparent metabolisable energy (AMEn) in dried Sea buckthorn berries (SB) when fed to Ross 308 broiler chickens. Two experimental diets (basal and basal + 12 g/kg dried and milled SB berries) were fed to an equal number of replicated pens (n=8; two birds in each) from 7 to 21d age, following randomisation. The basal diet was formulated to meet breeder’s recommendations. The inclusion of dried SB berries at 12 g/kg diet, did not significantly (P>0.05) affect broiler chicken growth performance, dietary nutrient availability or AMEn. Using the substitution method, it was found that the AMEn of the dried SB berries was 14.29 MJ/ kg DM. Although relatively high in AMEn, the absence of starch in SB berries, suggests SB berries are not a suitable substitute for cereals in poultry diets, but further research on their health benefits as a minor supplement for poultry diets is warranted.Целта на експеримента е да се оцени съдържанието на N-коригирана видима обменна енергия (AMEn) в сушени плодове от облепиха (SB), при хранене на пилета бройлери Ross 308. Две експериментални диети (базална и базална + 12 g/kg сушени и смлени SB плодове) бяха приложени с равен брой повторения (n=8; по две птици във всяка клетка) от 7 до 21-годишна възраст, след рандомизиране. Основната диета е формулирана следвайки стандартните изисквания. Включването на сушени плодове SB при 12 g/kg диета не повлия значително (P>0,05) върху ефективността на растежа на бройлерите, смилаемостта на хранителни вещества и AMEn. Използвайки метода на заместване, беше установено, че AMEn на изсушените SB плодове е 14,29 MJ/kg DM. Макар и относително високо съдържание на AMEn, отсъствието на скорбяла в плодовете на SB, предполага, че плодовете на SB не са подходящ заместител на зърнените храни в диетите за домашни птици, но са оправдани по-нататъшни изследвания за техните ползи за здравето като незначителна добавка за диети за домашни птици

The Benefits of Exogenous Xylanase in Wheat–Soy Based Broiler Chicken Diets, Consisting of Different Soluble Non-Starch Polysaccharides Content

Four wheat-based diets with either a low soluble content of non-starch polysaccharides (NSPs, 13 g/kg); low viscosity, LV) or a high content of NSPs (33.5 g/kg; high viscosity, HV), with and without exogenous xylanase (XYL), were fed to male Ross 308 broiler chickens from 7 to 21 days age. The enzyme was supplemented at 100 FXU/kg diet, and its preparation was based on endo-1,4-beta-xylanase produced by Aspergillus oryzae. Each diet was fed to eight pens, with five birds in each pen, following randomisation. Chicks fed XYL had an improved feed efficiency, hepatic coenzyme Q10, caecal butyric acid concentration, nitrogen digestibility (p p p < 0.05), but no differences were observed on nutrient digestibility and growth performance variables. This also suggests that birds may tolerate a greater dietary NSPs content; thus, further benefits may be obtained by the application of XYL in low energy wheat-based diets

The Benefits of Exogenous Xylanase in Wheat–Soy Based Broiler Chicken Diets, Consisting of Different Soluble Non-Starch Polysaccharides Content

Four wheat-based diets with either a low soluble content of non-starch polysaccharides (NSPs, 13 g/kg); low viscosity, LV) or a high content of NSPs (33.5 g/kg; high viscosity, HV), with and without exogenous xylanase (XYL), were fed to male Ross 308 broiler chickens from 7 to 21 days age. The enzyme was supplemented at 100 FXU/kg diet, and its preparation was based on endo-1,4-beta-xylanase produced by Aspergillus oryzae. Each diet was fed to eight pens, with five birds in each pen, following randomisation. Chicks fed XYL had an improved feed efficiency, hepatic coenzyme Q10, caecal butyric acid concentration, nitrogen digestibility (p &lt; 0.05) and increased dietary ME (p &lt; 0.001). Compared to HV, birds fed LV diets had reduced weight of proventriculus, gizzard and the pancreas and higher blood glutathione peroxidase and dietary ME (p &lt; 0.05), but no differences were observed on nutrient digestibility and growth performance variables. This also suggests that birds may tolerate a greater dietary NSPs content; thus, further benefits may be obtained by the application of XYL in low energy wheat-based diets