以水果副产品替代麦麸作为膳食纤维来源对安格斯育肥牛生产性能和肉质的影响。

Influence of feeding fruit by-products as alternative dietary fibre sources to wheat bran on beef production and quality of Angus steers.

机构信息

Department of Animal Sciences, Faculty of AgriSciences, Stellenbosch University, Private Bag X1, Matieland 7602, South Africa.

Lacombe Research and Development Centre, Agriculture and Agri-Food Canada, Lacombe, Alberta, Canada.

出版信息

Meat Sci. 2020 Mar;161:107969. doi: 10.1016/j.meatsci.2019.107969. Epub 2019 Nov 1.

DOI:10.1016/j.meatsci.2019.107969

PMID:31704473

Abstract

The current study compared the growth performance, carcass and meat quality effects of feeding 150 g/kg DM of dried citrus pulp (DCP) or grape pomace (DGP) as alternative dietary fibre sources to 7 months-old Angus steers for 90d. Twenty-four steers were assigned to three dietary treatments (8 steers/treatment) in completely randomised design. Each steer was treated as an experimental unit. Feeding the DGP and DCP diets resulted in greater (P ≤ 0.05) average daily gain and live weight compared to the control diet. Steers fed the DGP diet had higher (P ≤ 0.05) dry matter intake, warm and cold carcass weights than those fed the DCP and control diets. Shear force and income over feed costs were greatest for the DGP diet followed by the DCP and control diets (P ≤ 0.05). Current findings suggest DGP is a better fibre source than DCP resulting in enhanced growth performance, carcass attributes and economic viability of feedlot steers.

摘要

本研究比较了在 7 月龄安格斯育肥牛的日粮中添加 150g/kgDM 干桔皮（DCP）或葡萄渣（DGP）作为替代纤维源，对其生长性能、胴体和肉质的影响，为期 90d。24 头育肥牛采用完全随机设计分为 3 个日粮处理组（每组 8 头）。每头育肥牛作为一个试验单元。与对照组相比，饲喂 DGP 和 DCP 日粮的育肥牛平均日增重和活重更高（P≤0.05）。饲喂 DGP 日粮的育肥牛干物质采食量、热胴体重和冷胴体重均高于饲喂 DCP 和对照组日粮的育肥牛（P≤0.05）。DGP 日粮的剪切力和投入产出比最高，其次是 DCP 日粮和对照组日粮（P≤0.05）。本研究结果表明，DGP 是一种比 DCP 更好的纤维源，可提高育肥牛的生长性能、胴体特性和饲料经济性。