Determination of Nutrients and Metabolic Energy of Geese in Broussonetia papyrifera Leaves Powder and Broussonetia papyrifera Twig Leaves Powder from Different Areas

ZUO Xin, CHEN Zhe, XIE Qiang, ZHAI Shuangshuang, WANG Heng, ZHONG Shaoying, ZHU Yongwen, WANG Wence, YANG Lin

doi:10.3969/j.issn.1006-267x.2018.07.044

2018 , Vol. 30 >Issue 7: 2823 - 2830

DOI: https://doi.org/10.3969/j.issn.1006-267x.2018.07.044

Molecular Nutrition

Determination of Nutrients and Metabolic Energy of Geese in Broussonetia papyrifera Leaves Powder and Broussonetia papyrifera Twig Leaves Powder from Different Areas

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Guangdong Province Key Laboratory of Animal Nutritional Regulation, College of Animal Science, South China Agriculture University, Guangzhou 510642, China

Received date: 2018-01-03

Online published: 2018-07-20

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Abstract

This experiment was conducted to evaluate the nutrients and metabolic energy of geese in Broussonetia papyrifera leaves powder (BPL) and Broussonetia papyrifera twig leaves powder (BPTL) from different areas. Six kinds of BPL and 3 kinds of BPTL samples were collected and determined the nutrient contents by chemical analysis. Forty-eight 18-week-old healthy male Magang geese were randomly divided into 6 groups with 8 replicates per group and 1 goose per replicate. The metabolic energy of geese in 6 kinds of BPL and 3 kinds of BPTL were determined by metabolic test. The results showed as follows:1) the average value of gross energy (GE) of 6 kinds of BPL was 17.07 MJ/kg, the average values of crude protein (CP), ether extract (EE), ash, crude fiber (CF), calcium (Ca) and phosphorus (P) contents were 22.49%, 2.19%, 17.81%, 13.89%, 3.12% and 0.54%, respectively. Except GE and ash content, the variation coefficients of other nutrient contents were all greater than 10%. The average value of GE of 3 kinds of BPTL was 18.35 MJ/kg, the average values of CP, EE, ash, CF, Ca and P contents were 16.99%, 1.44%, 13.77%, 25.12%, 1.58% and 0.37%, respectively. The contents of EE, P and CF varied greatly, and the variation coefficients were all greater than 10%. 2) The average values of tannins, total flavones, water-soluble polysaccharide contents of BPTL from different areas were 229.03 μg/g, 578.88 μg/g and 4.65%, respectively, and the variation coefficients of total flavones and water-soluble polysaccharide contents were all greater than 20%. The highest contents of water-soluble polysaccharide and total flavones of BPTL were observed in the samples obtained from the Hubei and Anhui areas, respectively. 3) The apparent metabolizable energy (AME) and true metabolizable energy (TME) of geese of 6 kinds of BPL were 9.72 and 10.23 MJ/kg, respectively. The AME and TME of geese of 3 kinds of BPTL were 6.87 and 7.35 MJ/kg, respectively. In conclusion, BPTL contains high protein content, has high nutritional value, and is a good raw material for roughage, but has low energy utilization for geese.

Key words： Broussonetia papyrifera leaves powder; Broussonetia papyrifera twig leaves powder; geese; nutrients; metabolizable energy

Cite this article

ZUO Xin, CHEN Zhe, XIE Qiang, ZHAI Shuangshuang, WANG Heng, ZHONG Shaoying, ZHU Yongwen, WANG Wence, YANG Lin . Determination of Nutrients and Metabolic Energy of Geese in Broussonetia papyrifera Leaves Powder and Broussonetia papyrifera Twig Leaves Powder from Different Areas[J]. Chinese Journal of Animal Nutrition, 2018 , 30(7) : 2823 -2830 . DOI: 10.3969/j.issn.1006-267x.2018.07.044

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