南信の一地域における生産生乳の乳質について

概要

論文の詳細を見る
During the period from April, 1974 to February, 1976, quality of bulk milk of Holstein-Friesian from three regions in the southern part of Nagano Prefecture was monthly investigated. The results obtained for the chemical composition of the raw milk were given as follows: specific gravity 1.0313; acidity 0.148%; pH 6.71; fat 3.33%; protein 2.89%; lactose 4.38%; crude ash 0.66% and solid-not-fat (SNF) 8.15%. There was significant seasonal variation in each milk component. The yearly mean of SNF content in the raw milk was recognized to be below the mean of SNF in the whole of Japan, and the monthly mean of SNF content showed a tendency to be lower in the period from April to September. Bacterial count in each milk sample was generally as small as below 106/ml through a year. This fact apparently indicates that the quality of milk produced in the southern part of Nagano Prefecture is sanitarily satisfactory.
信州大学農学部の論文
1978-07-00