期刊文献

Beef Production Systems with Steers of Dairy and Dairy × Beef Breeds Based on Forage and Semi-Natural Pastures 收藏

牛肉生产系统与乳制品和乳制品×牛肉品种的基于饲料和半天然牧场的牛肉品种

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作者

Anna Hessle[ 1;[*]; Margrethe Therkildsen[ 2];Katarina Arvidsson-Segerkvist[ 1]

作者单位

[1] Department of Animal Environment and Health, The Swedish University of Agricultural Sciences, P.O. Box 234, SE-532 23 Skara, Sweden [2] Department of Food Science–Differentiated and Biofunctional Foods, Aarhus University, P.O. Box 50, DK-8830 Tjele, Denmark [*] Author to whom correspondence should be addressed. Animals 2019, 9(12), 1064; https://doi.org/10.3390/ani9121064

关键词

animal performance; carcass characteristics; feed intensity; grazing; nature conservation; semi-natural pasture; steer; cross-breeding

关键词译文

动物表现;胴体特征;饲料强度;放牧;自然保护;半天然牧场;转向;杂交育种

发布日期

2019-12-02

页码

1064

DOI

10.3390/ani9121064

来源信息

Animals ISSN：2076-2615, 2019年, 9卷, 12期, 1064页

摘要

This study compared animal performance and carcass characteristics in steers born to a dairy breed dam and a dairy or beef breed sire allocated to one out of two production systems, both including grazing semi-natural pastures during summer. Spring-born groups comprising 16 purebred dairy (D) steers and 16 dairy × Charolais crossbreeds (C) were allocated to moderately high indoor feed intensity with slaughter at 21 months of age (H), while two corresponding autumn-born groups of 16 D and 16 C animals were allocated to low indoor feed intensity with slaughter at 28 months of age (L). The animals were mainly fed grass-clover silage while housed. The H steers grazed semi-natural pastures for one summer, whereas the L steers grazed semi-natural pastures for two summers. From weaning to slaughter, liveweight gain was 0.94 and 0.77 kg day−1 for H and L steers, respectively (p < 0.0001), with no breed effect on weight gain. However, C carcasses had a higher weight, conformation score, and proportion of high-valued retail cuts than D carcasses (p ≤ 0.004). Moreover, conformation differed more between LC and LD than between HC and HD. From this study on forage and pasture-based beef production, we concluded that breed had no effect on the performance of living animals, but that dairy × beef crossbred steers produced heavier and higher-quality carcasses than pure-bred dairy steers.

摘要译文

本研究与乳制品大坝出生的阉牛的动物性能和胴体特征相比，乳制品或牛肉品种分配给两种生产系统中的一个，包括在夏季期间放牧半天然牧场。包括16个纯种乳制品（D）Steers和16个乳制品×Charolais杂交（C）的春天出生的群体被分配给中度高室内饲料强度，在21个月（H）时，屠宰，而两个相应的16 D秋季群体在28个月（L）的28个月内，将16只动物分配到低室内饲料强度，屠宰。这些动物主要喂养了草丛中的青贮饲料。 H Steers将半自然牧场放在一个夏天，而L Steers为两个夏天撒上半天然牧场。从断奶屠宰，分别为H和L操舵的活力增益为0.94和0.77千克 - 1（P <0.0001），对体重增加没有效果。然而，C碳酸的重量较高，构象评分和比D尸体的高值零售切口的比例（P≤0.004）。此外，LC和LD之间的构象不同于HC和HD之间。从本研究饲料和牧场的牛肉生产，我们得出结论，这种品种对活体动物的表现没有影响，但乳制品×牛排杂交阉牛比纯养殖乳制品阉牛体产生较重和更高质量的尸体。

Anna Hessle[ 1;[*]; Margrethe Therkildsen[ 2];Katarina Arvidsson-Segerkvist[ 1]. Beef Production Systems with Steers of Dairy and Dairy × Beef Breeds Based on Forage and Semi-Natural Pastures[J]. Animals, 2019,9(12): 1064