期刊文献

Performance and carcass characteristics of beef cattle fed diets containing silage from intercropped barley and annual ryegrass 收藏

间作大麦和一年生黑麦草青贮饲料肉牛生产性能和屠宰特性

原文求助发布源

作者

M.SZaman[a];ZMir[a];P.SMir[a];AEl-Meadawy[a];T.AMcAllister[a];K.-JCheng[b];DZoBell[c];G.WMathison[d];

作者单位

[a]Agriculture and Agri-Food Canada, Lethbridge Research Centre, P.O. Box 3000, Lethbridge, Alberta, Canada T1J 4B[b]Faculty of Agricultural Sciences, 2357 Main Mall, University of British Columbia, Vancouver, British Columbia, Canada V6T 1Z4[c]Department of Animal, Dairy and Veterinary Sciences, Utah State University, 4815 Old Main Hill, Logan, UT 84322-4815, USA[d]Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, Alberta, Canada T6G 2P5

关键词

Intercropping; Barley silage; Ryegrass silage; Beef cattle; Feedlot;

关键词译文

间作;大麦青贮;黑麦草青贮;肉用牛;饲养场;

发布日期

30 August 2002

页码

1-11

DOI

10.1016/S0377-8401(02)00148-7

来源信息

Animal Feed Science and Technology ISSN：0377-8401, 2002年, 99卷, 1-4期, 1-11页

摘要

A feeding trial was conducted to compare intercropped barley/annual ryegrass silage (B/RS) and barley silage (BS) on average daily gain (ADG), dry matter intake (DMI) and carcass characteristics of beef steers in a randomized complete block design experiment. Both B/RS and BS were prepared in plastic tube silos, ensiled for 168 days and then used in a feeding trial. Steers (n=120) were housed in individual pens and fed a backgrounding diet containing 350 g steam-rolled barley grain (SBG) and 600 g kg⁻¹ B/RS or 600 g kg⁻¹ BS and 50 g kg⁻¹ supplement until they weighed 445 kg, after which they were adapted to a finishing diet consisting of 860 g SBG and 100 g kg⁻¹ B/RS or 100 g kg⁻¹ BS and 40 g kg⁻¹ supplement. Steer weight and back-fat depth (determined by ultra-sonography) were measured every 3 weeks. Steers were slaughtered when back-fat depth was greater than 7 mm and carcass data were obtained. Content of ADF in B/RS was lower (P kg per day) were higher (P kg per day) and feed conversion efficiency were similar between two groups of steers. Acetic:propionic ratio of rumen fluid from steers fed either B/RS or BS-based diets in the backgrounding trial were similar. Steers fed B/RS and BS diets had similar ADG, DMI and feed conversion efficiency in the finishing trial. Carcass weights of steers fed B/RS diet were higher (P kg versus 316.5 kg), but other variables were similar. The total dry matter yield of the intercropped barley/ryegrass was higher (57.6%) than the yield of barley.

摘要译文

通过饲喂试验比较间作大麦/年度黑麦草青贮（B / RS）和大麦青贮（BS）的平均日增重（ADG），干物质采食量（DMI）和牛肉胴体特性的随机完整区组设计实验。 B / RS和BS都是在塑料管筒仓中制备的，青贮168天，然后用于饲养试验。（SBG）和600 g·kg-1·B / RS或600 g·kg-1 BS和50 g·kg- kg-1补充，直到它们重达445公斤，之后，它们适应于由860g SBG和100g kg -1 B / RS或100g kg -1 BS和40g kg -1 sup组成的整理饮食 -1补充。每3周测量转向重量和背部脂肪深度（通过超声波检测确定）。当背部深度大于7毫米时屠宰牲畜，并获得屠体数据。B / RS中ADF含量较低（P kg /日）较高（P kg / d），两组阉牛饲料转化效率相似。在本底试验中，饲喂基于B / RS或基于BS的饮食的阉牛瘤胃液的乙酸：丙酸比例是相似的。饲喂B / RS和BS日粮的转基因动物具有相似的ADG，DMI和饲料转化效率在整理试验。饲喂B / RS日粮的阉牛胴体重较高（P kg相对于316.5 kg），但其他变量相似。间作大麦/黑麦草的总干物质产量比大麦产量高（57.6％）。

M.SZaman[a];ZMir[a];P.SMir[a];AEl-Meadawy[a];T.AMcAllister[a];K.-JCheng[b];DZoBell[c];G.WMathison[d];. Performance and carcass characteristics of beef cattle fed diets containing silage from intercropped barley and annual ryegrass[J]. Animal Feed Science and Technology, 2002,99(1-4): 1-11