China Animal Husbandry and Veterinary Medicine ›› 2022, Vol. 49 ›› Issue (7): 2578-2585.doi: 10.16431/j.cnki.1671-7236.2022.07.015

• Nutrition and Feed • Previous Articles     Next Articles

Evaluation of Metabolizable Energy and Nutrient Utilization of Rapeseed Meal by Geese

YANG Yonglei1, XU Lei1, YANG Haiming1, FU Zhenming1, ZHANG Hang1, WANG Jian2   

  1. 1. College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China;
    2. Jiangsu Vocational College of Agriculture and Animal Husbandry Technology, Taizhou 225317, China
  • Received:2021-11-15 Online:2022-07-05 Published:2022-06-29

Abstract: 【Objective】 The metabolizable energy values of different sources of rapeseed meals and the utilization of their nutrients by geese were evaluated using set algorithm.【Method】 Thirty healthy,200-day-old adult male geese were selected and randomly divided into five groups (groups Ⅰ,Ⅱ,Ⅲ,Ⅳ,and Ⅴ),with six replicates in each group and one goose in each replicate.4 types of rapeseed meal were extracted from rapeseed imported from Canada and rapeseed locally produced in Suzhou,Suqian and Yancheng,Jiangsu province,respectively.Metabolic test was conducted by forced feeding method with a feeding amount of 80 g.Four types of rapeseed meals were used to replace 30% of the basal diet in groups Ⅰ,Ⅱ,Ⅲ,and Ⅳ,respectively, the basal diet was forced fed in group Ⅴ,and endogenous feces were collected for endogenous correction.【Result】 ① Gross energy (GE),dry matter (DM),crude protein (CP),crude fat (EE),crude ash (Ash),acid detergent fiber (ADF),neutral detergent fiber (NDF),calcium (Ca),and total phosphorus (TP) contents in four kinds of rapeseed meals were 17.48 MJ/kg,88.95%,42.22%,2.47%,7.93%,22.42%,37.81%,0.83%,and 1.09%,respectively.② The mean values of apparent metabolic energy (AME) and true metabolic energy (TME) of four rapeseed meals in geese were 12.27 and 13.05 MJ/kg,respectively,and there were significant differences among groups in AME and TME (P<0.05).The mean CP true utilization of four rapeseed meals by geese was 44.84%.The mean apparent utilization of DM,EE,Ash,ADF,NDF,Ca,and TP were 70.71%,76.48%,38.07%,43.31%,51.67%,46.09%,and 48.99%,respectively, there were significant differences between groups in utilization rates of CP,DM,EE and NDF (P<0.05).【Conclusion】 Rapeseed meal was rich in nutrients,and its metabolic energy was similar to that of soybean meal and wheat bran. Geese could utilize its EE,NDF,Ca,and TP at a higher level,but CP utlization was at a lower level.The metabolic energy,ADF,NDF,and TP utilization of rapeseed meals by geese in different regions differed significantly,with AME and TME in group Ⅰ being higher than the other three groups and CP utilization in test group Ⅳ being the highest.

Key words: rapeseed meal; geese; metabolizable energy; nutrient utilization

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