Short-season high-moisture shelled corn, snaplage, or corn silage as a partial replacement for dry-rolled barley grain or barley silage in western Canadian beef cattle finishing diets

IF 1.2 4区 农林科学 Q3 AGRICULTURE, DAIRY & ANIMAL SCIENCE
Rachel Evelyn Carey, Gabriel Ribeiro, Z.D. Paddock, Diego Moya, Tim A. McAllister, Gregory B. Penner
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Abstract

The objective was to evaluate the replacement of barley-based ingredients with short-season high-moisture corn products on steer growth performance and carcass characteristics. Over 2 years, 320 beef steers (528 ± 36.2 kg initial body weight) were assigned to 32 pens (4 pens/treatment/year). Treatments were finishing diets that contained dry-rolled barley grain and barley silage (BGBS; control), barley grain and corn silage (BGCS), high-moisture shelled corn and barley grain with barley silage (HCBS), or snaplage (included as a silage and grain source) with barley grain (SNAP). Steers were fed for 99 days and 72 days in years 1 and 2, respectively. Steers fed BGCS did not differ ( P ≥ 0.13) from BGBS for dry matter intake, average daily gain, gain:feed, or carcass characteristics. Steers fed HCBS had greater ( P ≤ 0.05) hot carcass weight and dressing percentage than BGBS. A lesser ( P = 0.02) proportion of steers fed SNAP had severe liver abscesses than BGBS. We concluded that corn silage can replace barley silage, 50% replacement of barley grain with high-moisture shelled corn may improve hot carcass weight, and replacement of barley silage and some barley grain with snaplage decreases the proportion of cattle with severe liver abscesses at slaughter.
短季高水分脱壳玉米、秸秆或玉米青贮饲料部分替代加拿大西部肉牛育肥日粮中的干卷大麦谷物或大麦青贮饲料
目的是评估用短季高水分玉米产品替代大麦原料对阉牛生长性能和胴体特性的影响。在2年的时间里,320头肉牛(528±36.2 kg初始体重)被分配到32个猪圈中(4个猪圈/处理/年)。饲粮中添加干滚大麦和青贮大麦(BGBS);对照),大麦籽粒和玉米青贮(BGCS),高水分脱壳玉米和大麦籽粒与大麦青贮(HCBS),或秸秆(包括作为青贮和粮食来源)与大麦籽粒(SNAP)。第1年和第2年分别饲喂99 d和72 d。饲喂BGCS的阉牛在干物质采食量、平均日增重、增重比和胴体特性方面与BGBS无显著差异(P≥0.13)。饲喂HCBS的肉牛热胴体重和屠宰率均高于BGBS (P≤0.05)。与BGBS相比,SNAP喂养的肉牛出现严重肝脓肿的比例较低(P = 0.02)。综上所述,玉米青贮可以替代大麦青贮,用高水分脱壳玉米替代50%的大麦籽粒可以改善热胴体重,用青贮替代大麦和部分大麦籽粒可以降低屠宰时严重肝脓肿牛的比例。
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来源期刊
Canadian Journal of Animal Science
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
51
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.
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