Sensory judgement on the quality of hay can be made from aspects such as color, aroma, moisture, composition of plants, and number of leaves.
From the color and aroma of the hay, we can see 1 excellent hay, dark green color and rich aroma. It shows that the hay did not rain during the drying process, and there was no mildew and high temperature in the heap. You can see more buds and leaves in the hay. 2 Moderate hay, grayish green, with grassy taste. This indicates that no moldy disease occurred during the storage and storage of hay. 3 Bad hay, yellowish-yellow, can not smell the aroma of hay. This indicates that hay has been exposed to rain during the drying process or during storage, resulting in serious loss of nutrients. 4 is equal to the grass, the color is white, black, pungent musty. It indicated that the hay had high moisture content before heaping up or there was rain and other infiltration during the accumulation, and the mildew of the hay rotted. This kind of hay is harmful to the health of cows and should not be fed to cows.
From the moisture content of hay, the quality of hay with good quality is less than 17%, and the quality of hay with poor quality is greater than 20%.
From the botanical composition of the hay, 1 class of hay and legume grasses range from 5% to 10%. 2 Moderate hay, grasses and weeds account for more than 80%. 3 inferior hay, can not eat weeds more than 10% to 15%. In addition, poisonous and harmful grasses in the hay should not exceed 1%. If the proportion of poisonous and harmful grasses exceeds 1% and cannot be removed, such hay cannot feed cattle.
From the amount of hay leaves, we can see that in 1 hay quality, the preservation rate of the leaves on the plants is above 5%~10%. 2 Moderately dry grass, the leaves on the plants have fallen 50% to 75%. 3 inferior hay, the leaves only equal to 20% of the original plant.
From the color and aroma of the hay, we can see 1 excellent hay, dark green color and rich aroma. It shows that the hay did not rain during the drying process, and there was no mildew and high temperature in the heap. You can see more buds and leaves in the hay. 2 Moderate hay, grayish green, with grassy taste. This indicates that no moldy disease occurred during the storage and storage of hay. 3 Bad hay, yellowish-yellow, can not smell the aroma of hay. This indicates that hay has been exposed to rain during the drying process or during storage, resulting in serious loss of nutrients. 4 is equal to the grass, the color is white, black, pungent musty. It indicated that the hay had high moisture content before heaping up or there was rain and other infiltration during the accumulation, and the mildew of the hay rotted. This kind of hay is harmful to the health of cows and should not be fed to cows.
From the moisture content of hay, the quality of hay with good quality is less than 17%, and the quality of hay with poor quality is greater than 20%.
From the botanical composition of the hay, 1 class of hay and legume grasses range from 5% to 10%. 2 Moderate hay, grasses and weeds account for more than 80%. 3 inferior hay, can not eat weeds more than 10% to 15%. In addition, poisonous and harmful grasses in the hay should not exceed 1%. If the proportion of poisonous and harmful grasses exceeds 1% and cannot be removed, such hay cannot feed cattle.
From the amount of hay leaves, we can see that in 1 hay quality, the preservation rate of the leaves on the plants is above 5%~10%. 2 Moderately dry grass, the leaves on the plants have fallen 50% to 75%. 3 inferior hay, the leaves only equal to 20% of the original plant.
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