Evaluation of nutritional value of eight novel unconventional feeds using in vitro gas production technique
CUI Hongzhe
YANG Kun
ZHAO Haixia
LI Yingli
LAN Rubing
HU Honglian
ZHANG Aizhong
Abstract：The experiment was to evaluate the nutritional value and rumen fermentation parameters of eight novel unconventional feeds,namely ryegrass,chili meal,siraitia grosvenorii seed,palm kernel meal,broccoli,chrysanthemum powder,walnut kernel and switchgrass,by using feed nutrient composition analysis and in vitro gas production method,in order to provide data reference for the development and utilization of unconventional feeds.The results showed that broccoli and walnut kernel had higher content of crude protein(CP),switchgrass had the highest content of neutral detergent fiber(NDF),siraitia grosvenorii seed had the highest content of acid detergent fiber(ADF),while siraitia grosvenorii seed had the lowest 48 h cumulative gas production and in vitro dry matter degradation rate.The content of bacterial protein(BCP)was ranked as:Palm kernel meal＞switchgrass=ryegrass＞walnut kernel＞chili meal=chrysanthemum powder＞broccoli=siraitia grosvenorii seed.The metabolizable energy of ryegrass was the highest,and the ammonia nitrogen(NH3-N)content of walnut kernel was the highest,followed by palm kernel meal and siraitia grosvenorii seed.The study indicates that siraitia grosvenorii seed has the lowest digestibility in the rumen,the higher crude protein content in chili meal,walnut kernel and broccoli,and the higher gas production in vitro fermentation of ryegrass.
Keywords：fermentation parametersunconventional feedsin vitro gas production methodnutritive value
Publication Date：2025-02-28
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 98-102 )