Hay and Alfalfa Fields
Can the nutritive value of hay be estimated by simply looking at it?
The short answer is no!
Generally, the CP or TDN content of forages can’t be estimated by visual appraisal alone. The only way to accurately determine the feeding value of a specific lot of hay . . . → Read More: Visual Appraisals of Hay Quality
Ready for Storage Attribution David McAskill
Hay can be kept for long periods if properly made and correctly stored; in contrast, it can deteriorate rapidly and even be lost by careless storage. The aim in storing hay is to keep it dry and to protect it from wastage due to rots, pests, . . . → Read More: Storage of Hay
Under research conditions, spontaneous heating usually is not measured simply as internal bale temperature.
The concept of heating degree days (HDD) is often used as a single index that incorporates both the magnitude and duration of heating during the entire storage period.
Heating degree days usually are calculated by subtracting 86°F (30°C) from the . . . → Read More: Measuring spontaneous heating
Attribution Raul Horacio Comes
Spontaneous heating is not the only factor that can affect the nutritional value of stored hay.
Over the last two decades, large round bales generally have replaced small rectangular bales as the preferred type of hay package largely because of the reduced requirement for labor. Many . . . → Read More: Weathering Effects on Hay
Romanian Hay Stacks
During the spontaneous heating process, sugars are oxidized.
This results in increased concentrations of more stable plant components such as structural fiber (NDF, ADF) and, to a lesser extent,protein. This results in a decrease in the energy content and digestibility of the forage.
As a standing crop, the . . . → Read More: Nutritional Characteristics of Heated Hays
Several studies have attempted to quantify storage losses of DM in large round bales. Table 8 summarizes a recent study with tall fescue conducted at the University of Kentucky.
Four combinations of wrapping and storage methods were evaluated.
1) bales wrapped with two layers of plastic mesh and stored . . . → Read More: The Effects of Storage Methods on Losses of Hay Dry Matter