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Process effects on carinata Brassica carinata and camelina Camelina sativa seed meal compositions and diet palatability in Rainbow Trout Oncorhynchus mykiss
Animal Feed Science and Technology ( IF 2.5 ) Pub Date : 2020-09-01 , DOI: 10.1016/j.anifeedsci.2020.114578
Tom Kasiga , Bishnu Karki , Jason Croat , Jasmeen Kaur , William R. Gibbons , Kasiviswanathan Muthukumarappan , Michael L. Brown

Abstract Inclusion levels of raw carinata Brassica carinata and camelina Camelina sativa seed meals in animal diets, especially monogastrics, is limited by antinutrients, mainly glucosinolates (GLS), sinapine and crude fiber. The effect of processing on these seed meals composition was assessed by first subjecting cold-pressed (CP) carinata and camelina seed meals to extrusion (EX), solvent extraction (SE) and aerobic conversion (AC), or sequential process combinations to determine which process(es) yielded improved chemical composition. The palatability of the processed meals was then conducted to determine the effects of processing on meal acceptability in fish. Carinata meals generally yielded more crude protein than camelina meals for a given process treatment. Similarly, the fiber contents of carinata meals were generally lower than observed for camelina meals. Largest protein increase was due to oil removal and AC, but not EX. Generally, AC increased the essential amino acids (EAA) of all meals. Although AC increased the crude fiber of all meals, it reduced the GLS of all meals by at least 70 %, with more reduction observed in camelina meals. Palatability of carinata and camelina meals was improved by SE. Extrusion improved the palatability of camelina and AC improved the palatability of carinata. Generally, AC meals were higher in protein and EAA, lower in soluble carbohydrate and GLS than unconverted meals and would be suitable for use in fish diets. Extrusion did not improve the composition or palatability of CPEXSEAC beyond CPSEAC. Generally, CPSEAC carinata would be preferred by feed manufacturers over CPSEAC camelina because of a better EAA profile, higher protein content and lower crude fiber. Reduction of crude fiber in CPSEAC carinata would likely improve the utilization of nutrients, increasing meal utilization in fish and /or monogastrics in general. Digestibility studies should be conducted to improve an understanding of the utilization of the different processed carinata and camelina meals in fish and/ or monogastrics, in addition to processing economics.

中文翻译:

加工对虹鳟鱼 Oncorhynchus mykiss Carinata carinata 和 Camelina Camelina sativa 籽粕组成和日粮适口性的影响

摘要 在动物饲料中,尤其是单胃动物饲料中,生carinata Brassica carinata 和Camelina Camelina sativa 种子粉的含量受到抗营养素的限制,主要是硫代葡萄糖苷(GLS)、芥子碱和粗纤维。加工对这些种子粉组成的影响是通过首先对冷榨 (CP) carinata 和山茶籽粉进行挤压 (EX)、溶剂提取 (SE) 和有氧转化 (AC) 或顺序工艺组合来评估的,以确定哪些过程产生了改进的化学成分。然后对加工过的鱼粉的适口性进行测定,以确定加工对鱼粉可接受性的影响。对于给定的加工处理,Carinata 粉通常比山茶粉产生更多的粗蛋白。相似地,carinata 膳食的纤维含量通常低于观察到的 Camelina 膳食。最大的蛋白质增加是由于油去除和 AC,而不是 EX。通常,AC 增加了所有膳食的必需氨基酸 (EAA)。尽管 AC 增加了所有膳食的粗纤维,但它使所有膳食的 GLS 降低了至少 70%,在亚麻荠菜中观察到的减少更多。SE 提高了carinata 和camelina 膳食的适口性。挤压提高了山茶的适口性,AC提高了carinata的适口性。通常,AC 膳食的蛋白质和 EAA 含量较高,可溶性碳水化合物和 GLS 含量低于未转化膳食,适合用于鱼类饮食。挤压并没有改善 CPEXSEAC 的组成或适口性超过 CPSEAC。一般来说,CPSEAC carinata 比 CPSEAC 亚麻荠更受饲料制造商青睐,因为它具有更好的 EAA 特征、更高的蛋白质含量和更低的粗纤维。减少 CPSEAC carinata 中的粗纤维可能会提高营养物质的利用率,从而提高鱼类和/或一般单胃鱼类的膳食利用率。除了加工经济性外,还应进行消化率研究,以提高对不同加工的carinata 和camelina 粉在鱼类和/或单胃鱼中的利用的理解。
更新日期:2020-09-01
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