Application of near infrared reflectance spectroscopy for determining components of feedstuff in a total mixed ration
2002
"Akita, T. (Hyogo-ken. Agricultural Inst., Kasai (Japan)) | Mori, N. "
"This study was made up of two experiments. In one experiment, two kind of rations used for in vivo digestibility were composed of combinations of corn silage or timothy hay and concentrates. Lignin content in these rations and feces collected from digestion trials using dairy cattle were analyzed to estimate digestibility and Total Digestible Nutrient (TDN) based on a lignin indicator method. In the other experiment, Near Infrared Reflectance Spectroscopy (NIRS) was used to estimate the components of feedstuffs in the Total Mixed Ratio n (TMR) and fece of dairy cattle. (1) The dry matter digestibility, neutral detergent fibre digestibility and TDN of TMR were estimated from the lignin content of the fece and feed. (2) The contents of moisture, crude protein, crude fat and acid detergent fiber in TMR and fece were estimated precisely by NIRS. Also the soluble protein and combined protein in protein were estimated. But precision of the estimation for crude ash, cell wall substance and lower digestible fiber were slightly lower."
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