Gao Chongya, Wu Longfei, Zhao Weiran, Chen Yiye, Deng Ming, Liu Guangbin, Guo Yongqing, Sun Baoli
College of Animal Science, South China Agricultural University, Guangzhou 510642, China.
Microorganisms. 2022 Jun 16;10(6):1228. doi: 10.3390/microorganisms10061228.
Herbal tea residues (HTRs) are a by-product of herbal tea processing that contains many nutrients and active substances but are often discarded as waste. The main aim of the present study was to determine the food safety of HTRs and lay the foundation for its use as a novel feed resource for goats. In this study, discarded HTRs were fermented and then fed to 33 female Chuanzhong black goats (121 ± 4.00 days) with similar weight (9.33 ± 0.95 kg) and genetic background, which were divided into three groups (fermented herbal tea residue (FHTR) replacement of 0%, 15% and 30% of the forage component of the diet). The feeding experiment lasted for 35 days. On day 35, our findings indicated that the concentrations of hydroxyl radicals and urea increased linearly, and the concentrations of glutathione peroxidase increased quadratically with the increase in FHTR. In addition, we investigated the fecal microbiota composition of eight Chuanzhong black goats in the control, 15% and 30% FHTR replacement groups and found that FHTR had no remarkable effect on the fecal microbiota composition. Results indicated that goat physiological functions remained stable after FHTR was added to the diet.
凉茶渣是凉茶加工的副产品，含有多种营养成分和活性物质，但常被当作废弃物丢弃。本研究的主要目的是确定凉茶渣的食品安全状况，并为其作为山羊新型饲料资源的应用奠定基础。在本研究中，将废弃的凉茶渣进行发酵，然后饲喂给33只体重相近（9.33±0.95千克）、遗传背景相似的雌性川中黑山羊（121±4.00日龄），这些山羊被分为三组（发酵凉茶渣替代日粮中0%、15%和30%的草料成分）。饲养实验持续35天。在第35天，我们的研究结果表明，随着发酵凉茶渣添加量的增加，羟自由基和尿素的浓度呈线性增加，谷胱甘肽过氧化物酶的浓度呈二次方增加。此外，我们调查了对照组、15%和30%发酵凉茶渣替代组中八只川中黑山羊的粪便微生物群组成，发现发酵凉茶渣对粪便微生物群组成没有显著影响。结果表明，在日粮中添加发酵凉茶渣后，山羊的生理功能保持稳定。
