Effect of sod-seeding bloat-free legumes on pasture productivity, steer performance, and production economics

IF 1.2 4区农林科学 Q3 AGRICULTURE, DAIRY & ANIMAL SCIENCE

Canadian Journal of Animal Science Pub Date : 2022-02-25 DOI:10.1139/cjas-2021-0098

B. Kelln, G. Penner, S. Acharya, T. McAllister, K. Larson, J. Mckinnon, B. Biligetu, H. Lardner

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引用次数: 0

Abstract

A five-year experiment evaluated the effects of sod-seeding sainfoin and cicer milkvetch into monoculture grass (Lanigan, SK) or legume (Lethbridge, AB) stands on pasture productivity, steer performance, and economics. At Lanigan, sainfoin decreased (treatment × year P = 0.01) from 13% in yr 1 to 2% in yr 2 (% plant population) and did not differ thereafter, while cicer milkvetch, maintained a proportion of 16% in the stand. Forage yield was greater (treatment × year; P < 0.01) in yr 1 in the sainfoin and cicer milkvetch treatments compared to control. DMI of steers was greater only in yr 5 and ADG was greater (P < 0.01) in sainfoin and cicer milkvetch treatments compared to control. At Lethbridge, sainfoin decreased (treatment × year; P = 0.01) from 46 to 17% (% DM yield), while cicer milkvetch maintained its proportion at 11%. Forage yield increased (treatment × year; P < 0.01) only in yr 2 and 3 of sainfoin, compared to cicer milkvetch or control. ADG gain was not affected by treatment. At Lanigan, sainfoin and cicer milkvetch generated greater gross returns compared to control; however, once establishment costs were applied there were no differences in present value of net returns.

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播草免胀豆科作物对牧场生产力、阉畜性能和生产经济性的影响

一项为期五年的实验评估了在单一栽培的草地（Lanigan，SK）或豆类（Lethbridge，AB）林分中播种海燕草和茜草对牧场生产力、转向性能和经济性的影响。在拉尼根，sainfoin从第1年的13%下降到第2年的2%（植物种群的%）（处理×年P=0.01），此后没有变化，而cicer Milvetch在林分中保持16%的比例。与对照组相比，在第1年，sainfoin和cicer Milvetch处理的饲料产量更高（处理×年；P<0.01）。与对照组相比，sainfoin和cicer Milvetch处理的公牛DMI仅在第5年更大，ADG更大（P<0.01）。在Lethbridge，sainfoin从46%（处理×年；P=0.01）降低到17%（%DM产量），而cicer milvetch的比例保持在11%。仅在2年和3年时，与对照组相比，饲料产量增加（处理×年；P<0.01）。ADG的增加不受治疗的影响。在拉尼根，与对照组相比，赛因芬和茜草产生了更大的总回报；然而，一旦应用了建立成本，净回报的现值就没有差异。

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来源期刊

Canadian Journal of Animal Science 农林科学-奶制品与动物科学

CiteScore

2.30

自引率

0.00%

发文量

审稿时长

6 months

期刊介绍： Published since 1957, this quarterly journal contains new research on all aspects of animal agriculture and animal products, including breeding and genetics; cellular and molecular biology; growth and development; meat science; modelling animal systems; physiology and endocrinology; ruminant nutrition; non-ruminant nutrition; and welfare, behaviour, and management. It also publishes reviews, letters to the editor, abstracts of technical papers presented at the annual meeting of the Canadian Society of Animal Science, and occasionally conference proceedings.