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    畜牧人

    標(biāo)題: 關(guān)于揮發(fā)性鹽基氮的問題請(qǐng)指教 [打印本頁]

    作者: guolupu    時(shí)間: 2011-2-20 14:08
    標(biāo)題: 關(guān)于揮發(fā)性鹽基氮的問題請(qǐng)指教
    在魚粉中,揮發(fā)性鹽基氮的指標(biāo)是多少,而在做出來的結(jié)果誤差范圍是多少呢?請(qǐng)教高人,謝謝
    作者: lilyyang    時(shí)間: 2011-2-20 14:19
    魚粉的理化指標(biāo) fish meal nutrient specification and quality grade
    項(xiàng)目 item
    specification
    Special grade
    First grade
    Second grade
    Third grade
    粗蛋白質(zhì)/%protein
    ≥65
    ≥60
    ≥55
    ≥50
    粗脂肪/%fat
    ≤11(red fish meal)
    ≤9(white fish meal)
    ≤12(red fish meal)
    ≤10(white fish meal)
    ≤13
    ≤14
    水分/%moisture
    ≤10
    ≤10
    ≤10
    ≤10
    鹽分(以NaCL計(jì))/%salt
    ≤2
    ≤3
    ≤3
    ≤4
    灰分/%ash
    ≤16(red fish meal)
    ≤18(white fish meal)
    ≤18(red fish meal)
    ≤20(white fish meal)
    ≤20
    ≤23
    砂分/%sand
    ≤1.5
    ≤2
    ≤3
    賴氨酸/%lysine
    ≥4.6(red fish meal)
    ≥4.4(white fish meal)
    ≥3.6(red fish meal)
    ≥3.4white fish meal)
    ≥4.2
    ≥3.8
    蛋氨酸/%met
    ≥1.7(red fish meal)
    ≥1.5(white fish meal)
    ≥1.5(red fish meal)
    ≥1.3(white fish meal)
    ≥1.3
    胃蛋白酶消化率/%pepsin digestibility
    ≥90(red fish meal)
    ≥88(white fish meal)
    ≥88(red fish meal)
    ≥86(white fish meal)
    ≥85
    揮發(fā)性鹽基氮(VBN/( mg/100g)
    ≤110
    ≤130
    ≤150
    油脂酸價(jià)( KOH)/(mg/g) acid value
    ≤3
    ≤5
    ≤7
    尿素/%urea
    ≤0.3
    ≤0.7
    組胺(mg/g) histamine
    ≤300(red fish meal)
    ≤500(red fish meal)
    ≤1000(red fish meal)
    ≤1500(red fish meal)
    ≤40(white fish meal)
    ( 6價(jià)鉻計(jì))(mg/g) Cr
    ≤8
    粉碎粒度/%granularity
    ≥96(通過篩孔為2.8mm的標(biāo)準(zhǔn)篩)(pass 2.8mm sieve)
    雜質(zhì)/%impurity
    不含有非魚粉原料的含氮物質(zhì)(植物油餅粕、皮革粉、羽毛粉、尿素、血粉、肉骨粉等)以及加工魚露的廢渣
    No content another raw material except fish meal, no content NPN, urea, feather meal, blood meal, bone meal,

    作者: 陳魚落雁    時(shí)間: 2011-2-20 15:07
    我也正在求這東東呢




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