樱桃谷鸭对不同地区玉米胚芽粕能量、蛋白质和氨基酸利用率的研究

doi:10.16431/j.cnki.1671-7236.2025.05.019

Abstract

Abstract: 【Objective】 To explore the utilization of energy,protein,and amino acid of corn germ meal from different regions for Cherry Valley ducks.【Method】 Seventy healthy Cherry Valley ducks weighted 3.25 kg±0.25 kg at 18 weeks of age were randomly divided into 5 groups.14 ducks were in each group,and 1 duck per replicate.They were raised individually in cages.The ducks in 3 experimental groups were fed the diets with corn germ meal and corn starch at a ratio of 7∶3,and the corn germ meal were collected from Liaoning,Shandong,and Henan provinces,respectively.The ducks in corn starch group were fed on the 100% corn starch diet,while in endogenous group was fed nothing.Force-feeding test were carried out,with all the excrement collected.Additionally,gross energy(GE),crude protein(CP),and the amino acid concent of the diet and excreta were measured.【Result】 The GE of corn germ meal from Liaoning and Shandong provinces was higher than Henan province,while the CP content of corn germ meal from Liaoning and Shandong provinces was lower than that from Henan province.The apparently metabolizable energy and true metabolizable energy of corn germ meal from Liaoning province were significantly higher than those from Henan province (P＜0.05).The true digestibility of aspartic acid,threonine,leucine,phenylalanine,lysine,histidine,and arginine of corn germ meal from Liaoning and Shandong provinces were significantly lower than those from Henan province (P＜0.05).The true digestibility of seven essential amino acids (threonine,methionine,leucine,phenylalanine,lysine,histidine,and arginine) and five non-essential amino acids(aspartic acid,serine,glutamic acid,glycine,and proline) of corn germ meal from Henan province was higher than those from the other two regions.【Conclusion】 There were significant differences in the energy and amino acid utilization of Cherry Valley ducks of corn germ meal among different regions,while the difference in protein utilization was small.The utilization of energy of Cherry Valley ducks was in the following order:Shandong＞Liaoning＞Henan.The utilization of crude protein by Cherry Valley ducks was in the following order:Liaoning＞Shandong＞Henan.And the utilization of amino acid by Cherry Valley ducks was in the following order:Henan＞Liaoning＞Shandong.

Key words: Cherry Valley ducks; corn germ meal; metabolizable energy; true availability of crude protein; true availability of amino acids

CLC Number:

S834

WANG Haoyun, WANG Shenglin, JIN Chenglong, ZHANG Yanan, XIA Weiguang, CHEN Wei, HUANG Xuebing, LI Kaichao, ZHENG Chuntian, WANG Shuang. Study on Energy,Protein and Amino Acid Utilization of Corn Germ Meal from Different Regions by Cherry Valley Ducks[J]. China Animal Husbandry and Veterinary Medicine, 2025, 52(5): 2149-2156.

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Study on Energy,Protein and Amino Acid Utilization of Corn Germ Meal from Different Regions by Cherry Valley Ducks

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