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Introduction
The nutrient grids are the heart of GPS. They provide the foundation for delivering essential nutrients to calves in each of our feeding programs. There are three main nutrient grids, corresponding to the three categories of feeds offered to calves: liquids, grains, and forages.
Feeding Program and Composition Options
Each menu provides two options: the feeding program and the composition. Let’s begin by examining the composition of one of these grids—the grain grid. When we select the grain grid, a new window appears.
Navigating the Grain Grid Window
This window functions similarly to other Microsoft Windows applications. Users can move, maximize, minimize, and close it as needed. The program allows resizing of the window to suit individual preferences.
If the window is made smaller, scroll bars will appear when necessary to ensure all nutrients remain visible. Multiple grids can be opened simultaneously—for example, the grain nutrients grid and the forage nutrients grid can be displayed together.
Changes to each grid will dynamically update the ration.
Adjusting Nutrient Visibility
Returning to the grain nutrients grid, we can see 10 nutrients displayed, ranging from dry matter to histidine (an amino acid). The grid currently includes two feeds: calf starter and calf grower.
Each column can be resized by dragging its right-hand edge to improve visibility.
If certain nutrients are not relevant to the evaluation—for example, amino acids—users can hide individual columns by left-clicking on them. For instance, clicking on arginine or histidine will remove them from view.
The number of feeds in each grouping can range from one to six, spanning grains, forages, and liquids. While six feeds are possible, most feeding programs use fewer—such as just calf starter and calf grower.
Selecting and Sorting Nutrients
In total, GPS contains 54 base nutrients, all of which can be displayed or hidden as needed. If a nutrient like starch is not relevant, users can click on it to remove it.
Users can also filter nutrients more efficiently. By right-clicking on any column heading, a nutrient selection box will appear. From this list, specific nutrients such as calcium or phosphorus can be selected.
Additionally, nutrient lists can be sorted alphabetically by clicking within the selection box.
Managing Feed Visibility
Users typically select only the feeds they are interested in. If a particular feed needs to be hidden—for example, feed three—it can be removed by left-clicking on the row header. The grid will update to show only feeds one, two, and four.
If necessary, hidden feeds can be restored by resetting the number of feeds.
Grid Controls and the Feeding Program
The grid provides several control buttons:
- Show, OK, and Hide: These allow users to minimize or remove the nutrient grid temporarily.
- Feeding Program: This feature enables users to adjust the feeding program directly, which will be covered in the next video.