Fodder productivity and nutritional quality of oat and vetch mixtures improved with application of NP fertilizers in Ethiopia

IF 1.1 Q3 AGRONOMY
Gezahagn Kebede, Walelign Worku, Fekede Feyissa, Habte Jifar
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引用次数: 0

Abstract

The fertilizer application rate is the same for different forage crops in Ethiopia. Thus, this study was conducted to determine the effect of nitrogen and phosphorus fertilizer application on fodder yield and nutritional quality of oat (Avena sativa L.)/vetch (Vicia villosa) mixtures. The oat/vetch mixtures were sown with eight fertilizer rates (0%, 25%, 50%, 75%, 100%, 125%, 150%, and 175%), and sole oat (100 kg/ha diammonium phosphate [DAP] + 50 kg/ha urea) and vetch (100 kg/ha DAP) were also sown with their recommended fertilizer rates (100%) using a randomized complete block design with three replications. The system productivity increased with increasing fertilizer rates up to 150% and the second year gave higher yield. All the nutritive value except fiber contents were higher in the second year. Among mixtures, the highest ash, crude protein yield, digestible dry matter, dry matter intake, in-vitro dry matter digestibility, digestible yield, total digestible nutrients, total digestible nutrient yield, relative feed value, and relative feed quality were recorded for 150% fertilizer. On the contrary, the neutral detergent fiber, acid detergent fiber, acid detergent lignin, and cellulose contents decreased with increasing fertilizer rates. Application of 175% fertilizer on oat/vetch mixtures gave the highest crude protein and digestible crude protein. Moreover, the digestible energy, metabolizable energy, and net energies for lactation, maintenance, and gain increased with increasing fertilizer rates up to 150%. Therefore, application of 150% fertilizer would increase the system productivity and nutritive value of oat/vetch mixtures in the study area.

在埃塞俄比亚,施用NP肥料提高了燕麦与豌豆混合饲料的产量和营养品质
埃塞俄比亚不同饲料作物的施肥量相同。为此,本试验旨在研究氮磷肥施用量对燕麦/紫薇混合饲料产量和营养品质的影响。采用3个重复的随机完全区组设计,分别施用8种施肥量(0%、25%、50%、75%、100%、125%、150%和175%)的燕麦/豌豆组合,单播燕麦(100 kg/ hm2磷酸二铵+ 50 kg/ hm2尿素)和豌豆(100 kg/ hm2磷酸铵),施用推荐施肥量(100%)。系统生产力随施肥量的增加而增加,最高可达150%,第二年产量提高。除纤维含量外,其余营养价值在第二年均较高。其中粗灰分、粗蛋白质产量、可消化干物质、干物质采食量、体外干物质消化率、可消化产量、总可消化营养物质、总可消化营养物质产量、相对饲料价值和相对饲料品质以150%肥料水平最高。中性洗涤纤维、酸性洗涤纤维、酸性洗涤木质素和纤维素含量随施肥量的增加而降低。施用175%肥量的燕麦/紫菀混合物粗蛋白质和可消化粗蛋白质最高。消化能、代谢能、泌乳能、维持能和增重能均随施肥量的增加而增加,最高可达150%。因此,施用150%的肥料可以提高研究区燕麦/豌豆混交田的系统生产力和营养价值。
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来源期刊
Crop, Forage and Turfgrass Management
Crop, Forage and Turfgrass Management Agricultural and Biological Sciences-Agronomy and Crop Science
CiteScore
1.30
自引率
16.70%
发文量
49
期刊介绍: Crop, Forage & Turfgrass Management is a peer-reviewed, international, electronic journal covering all aspects of applied crop, forage and grazinglands, and turfgrass management. The journal serves the professions related to the management of crops, forages and grazinglands, and turfgrass by publishing research, briefs, reviews, perspectives, and diagnostic and management guides that are beneficial to researchers, practitioners, educators, and industry representatives.
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