Constitute Variety and Nutrient Analysis of the Different Main Plant Parts of Caragana korshinskii for Animal Feed

Yifan Zhang, Zhijia Ding, Xia Hua, Fuyu Yang, Xin Zhou and Yong Xu ()
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Yifan Zhang: National Key Laboratory for the Development & Utilization of Forest Food Resources, Nanjing Forestry University, Nanjing 210037, China
Zhijia Ding: National Key Laboratory for the Development & Utilization of Forest Food Resources, Nanjing Forestry University, Nanjing 210037, China
Xia Hua: National Key Laboratory for the Development & Utilization of Forest Food Resources, Nanjing Forestry University, Nanjing 210037, China
Fuyu Yang: College of Animal Science, Guizhou University, Guiyang 550025, China
Xin Zhou: National Key Laboratory for the Development & Utilization of Forest Food Resources, Nanjing Forestry University, Nanjing 210037, China
Yong Xu: National Key Laboratory for the Development & Utilization of Forest Food Resources, Nanjing Forestry University, Nanjing 210037, China

Agriculture, 2025, vol. 15, issue 13, 1-11

Abstract: Caragana korshinskii , a protein-rich feed plant in arid regions, lacks comprehensive nutrient analysis. This study compared the chemical composition of its five parts (leaves, bark, twigs, branches, and stems) and evaluated protein quality through amino acid profiling and enzymatic digestion. Results showed that leaves and bark contained higher crude protein (16.6–18.6%) than stems (6.8%), with fiber components (NDF > 81% and ADF > 65%) contributing to structural rigidity. Aspartic acid dominated caragana proteins, while bark and twigs exhibited elevated proline levels. CNCPS analysis revealed leaves contained 53.3% intermediately degradable protein (PB 2 ) versus 11.6% non-protein nitrogen (PA), whereas bark and twigs had 38.8% and 45.8% PA, respectively. Despite higher PA content, bark and twigs demonstrated superior in vitro protein digestibility (73.2% and 67.4%) compared to leaves (61.2%). The findings established baseline nutritional data, highlighting part-specific variations in protein characteristics critical for optimizing caragana’s application in animal feed technology within resource-limited ecosystems.

Keywords: Caragana korshinskii; animal feed; different plant parts; constitute variety; nutritive value; digestibility of protein (search for similar items in EconPapers)
JEL-codes: Q1 Q10 Q11 Q12 Q13 Q14 Q15 Q16 Q17 Q18 (search for similar items in EconPapers)
Date: 2025
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