Abarghuei Mohammad Javad, Boostani Alidad
Animal Science Research Department, Fars Agricultural and Natural Resources Research and Education Center, Agricultural Research, Education and Extension Organization (AREEO), Shiraz, Iran.
Vet Anim Sci. 2025 Feb 24;27:100433. doi: 10.1016/j.vas.2025.100433. eCollection 2025 Mar.
Quinoa forage can be used as a sustainable source of ruminants to reduce environmental pollution. This study aimed to assess the chemical composition, fermentation and degradability of quinoa forage in harvestable stages and compare the nutritional value of this forage with alfalfa. Experimental treatments were: Al, alfalfa forage; Q45, Q95 and Q125, quinoa harvested 45, 95 and 125 days after planting respectively. The increment of harvesting time in quinoa increased the quantities of NDFom, ADFom and ADL but reduced the contents of CP, EE, total phenolics (TP), total tannins (TT), organic matter digestibility (IVOMD) and metabolizable energy (ME) ( < 0.0001). Total VFAs were decreased in Q125 and Q145 treatments Al treatment and this VFA decreased with increasing plant age ( < 0.0001). The concentration of acetate and the acetate to propionate ratio (P < 0.0001) in quinoa forages were lower, while the concentration of propionate was higher than that in the alfalfa (P = 0.0002). Applying quinoa forage reduced CH production ( = 0.0002) and NH-N concentration ( = 0.0004), total protozoa ( < 0.0001), subfamilies of ( < 0.0001) ( = 0.029) in comparison with Al. The amounts of fresh and dry quinoa forages/ha and WU and WUE increased with the quinoa growing (P < 0.0001). Applying quinoa forage in ruminant's diets may be a substitute answer to ecological problems in some areas where usual plants cannot grow as a result of the salinity and dryness of the soil.
藜麦草料可作为反刍动物的可持续饲料来源，以减少环境污染。本研究旨在评估可收获阶段藜麦草料的化学成分、发酵特性和降解性，并将这种草料的营养价值与苜蓿进行比较。实验处理包括：Al，苜蓿草料；Q45、Q95和Q125，分别在种植后45、95和125天收获的藜麦。藜麦收获时间的增加会使中性洗涤纤维（NDFom）、酸性洗涤纤维（ADFom）和酸性洗涤木质素（ADL）的含量增加，但会降低粗蛋白（CP）、粗脂肪（EE）、总酚（TP）、总单宁（TT）、有机物消化率（IVOMD）和代谢能（ME）的含量（P<0.0001）。Q125和Q145处理组的总挥发性脂肪酸（VFAs）低于Al处理组，且随着植物年龄的增加，VFAs含量降低（P<0.0001）。藜麦草料中乙酸浓度和乙酸与丙酸的比例较低（P<0.0001），而丙酸浓度高于苜蓿（P=0.0002）。与Al组相比，使用藜麦草料可减少甲烷（CH）的产生（P=0.0002）和氨氮（NH-N）浓度（P=0.0004），以及总原生动物数量（P<0.0001）、纤毛虫亚科数量（P<0.0001）和鞭毛虫数量（P=0.029）。每公顷新鲜和干藜麦草料的产量以及水分利用率（WU）和水分利用效率（WUE）随着藜麦生长而增加（P<0.0001）。在反刍动物日粮中使用藜麦草料可能是一些因土壤盐碱化和干旱而无法种植常规植物的地区解决生态问题的替代方案。
