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Net energy,energy utilization,and nitrogen and energy balance affected by dietary pea supplementation in broilers

Animal Nutrition 2021年第2期7卷 506-511页

作者： Nishchal K.Sharma Zhibin Ban Hank L.Classen Huaming Yang Xiaogang Yan Mingan Choct Shu-Biao Wu School of Environmental and Rural Science University of New EnglandArmidaleNSW 2351Australia Laboratory of Animal Nutrition Metabolism Jilin Academy of Agricultural SciencesGongzhulingJilin 136100China Department of Animal and Poultry Science University of Saskatchewan51 Campus DriveSaskatoonSK S7N 5A8Canada Office of the Pro Vice-Chancellor External Relations University of New EnglandArmidaleNSW 2351Australia

Pea starch consists predominantly of C-type of amylopectin chain which is more resistant to digestive enzymes than A-type of starch thus slowly digested in *** was hypothesized that the presence of slowly digested pea starch in broiler diets will increase net energy and the efficiency of energy utilization in *** experiments were performed to investigate starch digestibility of pea at different in-cubation times(in vitro study)and the effect of dietary pea on heat increment and net energy in broilers using an open-circuit respiratory calorimetry system(in vivo study).One-day-old Ross 308 male broilers were fed a common starter crumble from d 1 to 10 and standard grower diets *** d 21,birds were transferred to the chambers each housing 2 *** treatment was replicated 6 times with 2 identical runs of 3 replicates per treatment.A wheat-soybean meal-based diet was used as a control and the treatment diet contained 500 g of pea/kg *** vitro study showed that pellet processing increased(Pstarch digestibility,particularly at shorter times for wheat and a much larger response for *** offered the pea-based diet had lower(P=0.002)feed intake,lower(P=0.020)body weight gain,but a similar(P>0.05)FCR compared to those offered the wheat-based *** energy(NE)and apparent metabolizable energy(AME)values were higher in the pea-based diet than in the wheat-based diet(P-0.037 for NE and P-0.018 for AME).Heat production,respiratory quotient,heat increment of feed,efficiency of utilization of gross energy for AME,and efficiency of utilization of AME for NE did not differ(P>0.05)between the 2 *** was no effect(P>0.05)of pea on the total tract di-gestibilities of dry matter,crude protein and ash,but the total tract digestibility of starch was higher(P-0.022)in the pea-based diet compared to the wheat-based *** study provides insight into the energy metabolism of broilers offered a pea-based diet and indicates that dieta

关键词： slowly digested starch Pea Heat increment Net energy Broiler

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