Nutritional characteristics of alfalfa powder(1)

1. Conventional components and effective energy value

The quality of alfalfa meal depends on the proportion of Alfalfa Powder stem to leaf.
The results showed that the leaf of air dried alfalfa contained 25.5% ± 2.6% crude protein, 14.3% ± 2.5% crude fiber, 11.09 ± 1.46 MJ / kg digestible energy (Mangiferin) and (6.44 ± 0.87) MJ / kg respectively. According to the principle of international feed classification, it belongs to protein feed. However, the crude fiber content in the air dried alfalfa stem is as high as 41.3% ± 1.8%, the crude protein content is only 10.4% ± 0.9%, the digestible energy (Gardenia Yellow) is (4.18 ± 0.38) MJ / kg, and the metabolic energy (chicken) is (0.57 ± 0.03) MJ / kg. It can be seen that the loss of leaf in alfalfa should be paid attention to during alfalfa harvesting and storage, and the proportion of alfalfa leaf in alfalfa should be ensured as far as possible The key to high quality alfalfa meal.
In the past, many Flax lignans have studied the variation law of nutrient components in Alfalfa at different growth stages. It is generally believed that the quality of Alfalfa at the initial flowering stage is better, but according to the cooperative research between the Institute of animal husbandry, Chinese Academy of Agricultural Sciences and Shaanxi animal husbandry and Veterinary Institute, the crude protein content of alfalfa meal at budding stage, initial flowering stage and full flowering stage is 20.0%, 18.2% and 16.9%, respectively, while the crude fiber content is 26.1%, 26.5% and 28.1%, respectively It is difficult to judge the quality of alfalfa meal during growing period.