Nutritional characteristics of alfalfa powder(3)

4. Prediction of nutrients and the best harvest time

The nutrient composition of Mangiferin is directly affected by the ratio of stem to leaf and growth period. Therefore, according to the actual measured value of alfalfa leaf and alfalfa stem at different growth stages and the dry matter ratio of stem and leaf, Bitter Melon Extract is a good method to simulate and calculate the nutrient content of the whole plant in the aboveground part of alfalfa, which is a good method to avoid the sample error caused by the loss of leaves during sampling. The contents of nutrients in the stems and leaves of alfalfa were different in different growth stages. The peak value of crude protein content in leaves was at the initial Mangifera Indica Extract and full flowering stage, while the crude fiber content in leaves was contrary to this rule; the crude protein content of stem and leaf was the highest at full bud stage, and decreased with the growth period, and the peak value of crude fiber content in stem was in full flowering stage. The quality of alfalfa meal was the best at the initial flowering stage, followed by the full flowering stage, the second at the full bud stage, and the worst at the pod setting stage. Flax lignans can be seen that the best cutting time of Alfalfa should be combined with the ratio of stem to leaf and its nutrient content, and it is ideal to select the first flowering stage and the full flowering stage. Under the condition of less sample quantity and extensive sampling method, the simulation prediction is more practical than the actual sampling.

Nutritional characteristics of alfalfa powder(2)

2. Amino acid content of alfalfa

According to the statistical data of China Feed Database, the whole alfalfa meal harvested at full flowering stage after artificial drying contains 0.74% - 0.78% Gardenia Yellow, and the total essential amino acid content is relatively balanced. It is a kind of forage powder feed material to adjust the palatability and physical and Ginkgo Biloba Extract properties of compound feed.

3. Mineral and trace element content

The contents of calcium and phosphorus in leaves of Bitter Melon Extract were 150% and 50% higher than those in stems, respectively, and decreased with the growth period. Calcium is deficient in phosphorus, but not phytate.
Flax lignans is rich in iron and selenium, which is 5-10 times higher than that of livestock and poultry. It is a good source of iron and selenium. However, copper, zinc and manganese are all in the range of livestock and poultry demand or relatively deficient, and should be added as appropriate.

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.

Components of alfalfa powder

According to the classification of agricultural crops, Alfalfa Powder can be divided into three systems: purple, yellow and hybrid.

Among them, alfalfa is the main cultivated variety of alfalfa, mainly distributed in the Yellow River Basin, with Shaanxi, Ginkgo Biloba Extract, Shanxi and Xinjiang as the largest cultivation area, which is the main production area of Alfalfa in China. At present, it is widely cultivated in North China, Northeast China and Inner Mongolia. It is also planted in Bitter Melon Extract, Hubei and other provinces. In Guangdong, Guangxi, Fujian and other places, it is difficult to survive the summer due to high temperature and rainy weather. Alfalfa Planted in Zhejiang, Hunan, Barley Grass Powder and other provinces has blossomed or flowed but not solid.

Quality standard of alfalfa meal for feed: agricultural industry standard of the people's Republic of China NT / T 140-89

Level 1, level 2, level 3

Crude protein ≥ 18.0 ≥ 16.0 ≥ 14.0

Crude fiber < 25.0 < 27.5 < 30.0

Crude ash content < 12.5 < 12.5 < 12.5

Introduction to Alfalfa Powder

Alfalfa Powder is a kind of forage material which is made of Alfalfa according to a certain proportion of stem and leaf. It is a kind of forage material which can adjust the palatability and physical and chemical properties of compound feed.

Purple Yam Powder is rich in amino acids, minerals and trace elements, so it is widely used in agriculture and planted in large area.

According to the agricultural industry standard NT / T 140-89 of the people's Republic of China, the quality of Sodium Copper Chlorophyllin can be divided into three grades, corresponding to different proportions of crude protein, crude fiber and crude ash.

At present, Shaanxi, Gansu, Shanxi and Xinjiang are the main producing areas of alfalfa meal in China.

The grass powder made from alfalfa is used as feed material.

Gardenia Yellow generally refers to Medicago sativa L., an annual or perennial leguminous herb. It is native to the Near East, Central Asia, Asia Minor, Transcaucasia, Iran and Turkmenistan. "Historical records · biography of Dawan" records that "Dawan was a glutton of wine, horses were fond of alfalfa, and the Han envoys took the fact, so the emperor began to plant alfalfa The alfalfa is looking forward to it It describes the story of Zhang Qian's mission to the western regions during the reign of Emperor Wu of the Han Dynasty (126 B.C.), and introduced alfalfa from Dawan state (now the Central Asian Ferna basin). "Alfalfa" is a transliteration of Dawan language "buksuk", which is a foreign language in early China.