SHORT COMMUNICATION
Protein fractions (Cornell system) of lucerne dried
or ensiled with different additives
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1
Key Laboratory of Arid and Grassland Ecology Lanzhou University, Ministry of Education,
Lanzhou 730000, P.R. China
2
College of Animal Science and Technology, China Agricultural University, Beijing 100094, P.R. China
3
Department of Grassland Science, Sichuan Agriculture University,
Yaan Sichuan 625014, P.R. China
Publication date: 2007-09-17
Corresponding author
H. Zhou
College of Animal Science and Technology, China Agricultural University, Beijing 100094, P.R. China
J. Anim. Feed Sci. 2007;16(Suppl. 2):261-265
KEYWORDS
ABSTRACT
Effects of formic acid, formaldehyde, tannic acid or mixture of each two of the additives on five
protein fractions based on the Cornell Net Carbohydrate and Protein System (CNCPS) in hay and
ensiled lucerne (Medicago sativa) were studied. After 35 d of ensiling, the additives significantly
reduced fraction A in the ensiled forages. Fraction B1 in all of the additive-treated silages was
significantly higher than that in control silage. Large amounts of true protein in the formic acid/
formaldehyde treated- and tannic acid/formaldehyde treated-silages were fractions B3 and fraction
B2, respectively. No difference was observed on fraction C content between the control silage and
silages treated with additives except for the formaldehyde or tannic acid treated-silages.