Feeding in Confinement Opportunities to Manage Cattle

167 Cold Winter Climates prone to respiratory diseases and other infections during winter, as heat and humidity within the heavily-stocked sheds contribute to ideal conditions for a number of pathogens. Most winter sheds also have an adjoining outdoor yard that can be used to provide the cattle with an area to move and ‘loaf’ during winter. However, this is not always the case. Where outdoor pens are associated with the sheds, cattle health is improved as the cattle spend a considerable amount of time outdoors, resulting in lower levels of exposure to the humid conditions that persist inside the shed. This is despite the very cold outdoor temperatures that prevail in mid-winter.

7.5. Opportunities to Manage Cattle

Outdoors During Winter Managing beef cattle outdoors throughout winter and without the use of sheds is not a common practice outside North America. Experience in other cold climate countries has shown that alternative management based on maintaining the cattle outdoors throughout the winter is possible, and is achieved at a substantially lower cost of production, including a reduced requirement to invest in buildings, machinery and labour. Strategies for outdoor management vary considerably between producers. However, the two main strategies practised successfully are; • Feeding in coninement In winter yards On winter feeding sites • Winter grazing Stockpiled pasture or forage Forage swaths.

7.5.1. Feeding in Confinement

Coninement Yards Coninement feeding in well-constructed feedlot-style coninement yards is a simple winter strategy and is not a signiicantly large step forward for producers who have previously utilised sheds. The coninement yards are similar to those utilised as loaing yards in shed systems. However, a key diference is the use of wind fencing to provide protection against wind chill during the coldest weather conditions rather than a shed Fig. 7.9. Design principles for a coninement yard are similar to those for feedlot planning, and require consideration of suitable surface materials and slopes for siting and constructing the pens, providing suicient area for the cattle to be contained, and waste management structures to capture eluent that may run-of the site as the snow and ground thaws during spring see TECHNICAL NOTE 2 - Planning and Confinement Facilities. Preparation of coninement facilities with compacted pen surfaces increases the utility of the yards and also enables them to be used year-round for activities such as inishing young cattle prior to slaughter. If the pen loor is not constructed from a suitable compactable material, the surface can become muddy and ‘pugged’, particularly in the shoulder periods of the season leading into winter and spring when the ground is not frozen. During these periods, the cattle can accumulate muddy dags on their coat that, if present at slaughter, can impact on the value of the animal received, and increase the risk of bacterial contamination of the carcass during slaughter and hide removal. Provision of bedding mounds in pens can also assist to prevent the accumulation of dags. Winter Feeding Sites Coninement feeding may also take place without the need to develop coninement yards Fig. 7.10. In these situations, shelter needs to be provided in some form that enables the cattle to cope with harsh winter conditions when they occur Refer Section 2.3.4. 168 Beef Breeder MANUAL Figure 7.9. Winter coninement yards with wind fence protection for beef cattle in Canada. Source: International Agriculture for Development. Figure 7.10. Winter feeding sites may be developed without the need for constructing coninement yards. Source: International Agriculture for Development. 169 Cold Winter Climates Figure 7.11. Bale-grazing is a widely-used option in North America to feed cattle on wintering sites without requiring investment in containment yards. Source: International Agriculture for Development. As is the case for coninement feeding in yards, a daily supply of feed needs to be provided to the cattle throughout the period of coninement. Feed can either be provided in a similar form and manner as in coninement yards, or alternatively ‘bale-grazing’ is a developing practice in North America Fig. 7.11. Bale grazing involves the use of large round or square bales that are placed on the winter grazing site and set out in many repeating straight lines that can be ‘fed-of’ to the cattle at regular periods by controlling access to the bales with electric or other cattle-proof fences. Cattle on wintering sites such as these also require a source of fresh water, and a frost-free water source needs to be provided throughout winter. Because of the high density of livestock on the conined area of a winter grazing site, manure accumulation can be a signiicant environmental problem if not factored into initial site planning considerations. Consequently, wintering sites should be located away from environmentally sensitive areas such as riparian zones adjacent to water courses, or alternatively some site engineering is required to prevent run-of of nutrient rich waste water into sensitive areas during the thawing period in spring.

7.5.2. Winter Grazing