Influences of moisture and compound additives on the quality of alfalfa hay during storage

doi:10.11686/cyxb20140328

Abstract

Abstract: To select an optimal method for hay preservation, the effects of different moisture levels and applications of two chemical compound additives at bundling on preserved hay quality were investigated. The two chemical compound additives (SG and CA) used are both generally used for consuming oxygen and inhibiting mold or clostridia growth. The moisture treatments included high (27% to 28%) and low (17%) levels. Hay samples were collected at 0, 5, 10, 25, and 60 d before or after bundling. Under high levels of moisture, hay preservation without additives effectively preserved CP and WSC during the early stage of preservation, and the fiber content of the hay was relatively low. However, the quality of hay with a high level of moisture was lower at the late stage than that with a low level of moisture (P<0.05). Hay preservation with a high level of moisture and additives preserved CP and WSC well, and the concentrations of NPN and ADF in the hay were lower (P<0.05) than those in the hay preserved under a high level of moisture without additives. Therefore, good quality hay preservation with a high level of moisture can be obtained by addition of chemical additives at bundling. Adding CA, a complex chemical additive used against mold, could also maintain high levels of WSC, Ash, DM, CP and low levels of NPN and NDF during hay preservation. According to the standards of hay quality evaluation, all indexes of CP, ADF and DDM conferred superfine grade for the hay treated with CA. The use of CA for hay preservation was better than that of SG in terms of hay quality.

CLC Number:

S816.33

DING Wu-rong,GUO Xu-sheng,YANG Fu-yu. Influences of moisture and compound additives on the quality of alfalfa hay during storage[J]. Acta Prataculturae Sinica, 2014, 23(3): 241-247.

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