Effects of Palm Kernel Meal and Copra Meal Supplemented with Compound Enzymes on Nutrient, Amino Acid and Energy Utilization Rates of Linwu Ducks

ZHANG Xu; JIANG Guitao; WANG Xiangrong; LI Chuang; HUANG Xuan; WU Duanqin; DAI Qiuzhong

doi:10.3969/j.issn.1006-267x.2016.08.006

2016 , Vol. 28 >Issue 8: 2360 - 2366

DOI: https://doi.org/10.3969/j.issn.1006-267x.2016.08.006

POULTRY NUTRITION

Effects of Palm Kernel Meal and Copra Meal Supplemented with Compound Enzymes on Nutrient, Amino Acid and Energy Utilization Rates of Linwu Ducks

ZHANG Xu ,
JIANG Guitao ,
WANG Xiangrong ,
LI Chuang ,
HUANG Xuan ,
WU Duanqin ,
DAI Qiuzhong

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1. Institute of Bast Fiber Crops, Chinese Academy of Agricultural Sciences, Changsha 410205, China;
2. Hunan Institute of Animal Science and Veterinary Medicine, Changsha 410131, China;
3. Hunan Collaborative Innovation Center of Animal Production Safety, Changsha 410128, China

Received date: 2016-02-25

Online published: 2016-08-17

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Abstract

The aim of this study was to determine the effects of palm kernel meal (PKM) and copra meal (CM) supplemented with compound enzymes on nutrient, amino acid and energy utilization rates of Linwu ducks. Forty healthy adult Linwu ducks with body weight of (2.0±0.2) kg were randomly divided into 5 groups with 8 replicates in each group and 1 duck in each replicate. The metabolizable experiment was carried out by hunger strike-gavage method. Ducks in groups 1 and 2 were fed 50 g PKM and ducks in groups 3 and 4 were fed 50 g CM by gavage, and ducks in group 5 were fed 50 g diet with no nitrogen by gavage. Diets of groups 2 and 4 were added with 250 mg/kg compound enzymes. The experiment included a 7 days pre-experimental period and a 4 days experimental period. The results showed as follows:1) the true utilization rates of dry matter (DM), crude protein (CP), ether extract (EE), crude fiber (CF) and gross energy (GE) of PKM were 48.81%, 54.34%, 65.69%, 40.36% and 39.37%, respectively. The apparent metabolizable energy (AME) and true metabolizable energy (TME) were 6.18 and 7.49 MJ/kg, respectively. The true utilization rates of 15 kinds of amino acids were 50.28% to 87.97%. The true utilization rates of DM, CP, EE, CF and GE of CM were 52.23%, 58.49%, 70.28%, 34.67% and 54.76%, respectively. The AME and TME were 7.47 and 9.64 MJ/kg, respectively. The true utilization rates of 15 kinds of amino acids were 58.53% to 90.21%. 2) Adding with compound enzymes, the apparent utilization rate and true utilization rate of CP in PKM and CM were significantly increased (P<0.05); the TME increased by 5.61% and 3.63% (P>0.05), respectively; the true utilization rates of 15 kinds of amino acids increased by 0.27% to 7.36% and 0.67% to 4.99%, respectively; the true utilization rates of tyrosine and proline in PKM, and the true utilization rates of aspartate, isoleucine and tyrosine in CM were significantly increased (P<0.05). The results indicate that PKM and CM supplemented with compound enzymes containing protease, cellulase and xylanase can improve utilization rates of nutrient and energy of Linwu ducks.

Key words： palm kernel meal; copra meal; nutrient utilization rate; metabolizable energy; compound enzymes; Linwu ducks

Cite this article

ZHANG Xu , JIANG Guitao , WANG Xiangrong , LI Chuang , HUANG Xuan , WU Duanqin , DAI Qiuzhong . Effects of Palm Kernel Meal and Copra Meal Supplemented with Compound Enzymes on Nutrient, Amino Acid and Energy Utilization Rates of Linwu Ducks[J]. Chinese Journal of Animal Nutrition, 2016 , 28(8) : 2360 -2366 . DOI: 10.3969/j.issn.1006-267x.2016.08.006

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