This standard specifies the determination method of conventional nutrients in compound feeds for experimental animals, namely the determination method of moisture, crude protein, crude fat, crude fiber, crude ash, calcium and total phosphorus in compound feeds. This standard is applicable to the determination of moisture, crude protein, crude fat, crude fiber, crude ash, calcium and total phosphorus in compound feeds and their raw materials for experimental animals such as mice, rats, rabbits, guinea pigs, hamsters, dogs and monkeys. GB/T 14924.9-2001 Determination of conventional nutrients in compound feeds for experimental animals GB/T14924.9-2001 Standard download decompression password: www.bzxz.net

CB/T 14924.9-2001
All technical contents of this standard are recommended. Previously
This standard was separated from GB14924--1994 "Complete Nutrition Feed for Laboratory Animals" to form an independent standard. This standard is revised on the basis of the demonstration of the use of "4 test methods" in GB14924-1994, and has formulated the determination methods of 7 conventional substitute ingredients in compound feed:
(1) Determination of moisture in feed;
(2) Determination of crude protein in feed;
(3) Determination of crude fat in feed;
(1) Determination of crude fiber in feed;
(5) Determination of crude ash in feed;
(6) Determination of calcium in feed;
(7) Determination of total phosphorus in feed.
This standard is based on the international common method and its accuracy, and uses the atomic absorption method as the first method (regulatory arbitration This standard and its supporting standards shall replace GB14924-1994 from the date of implementation. This standard is proposed and managed by the Ministry of Science and Technology of the People's Republic of China. The drafting unit of this standard is: Chinese Society of Laboratory Animal Science. The main drafters of this standard are: Zhou Ruihua, Yang Xiaoli, Wang Guangya, Zhang Yu, Su Wei, Zheng Tao, Liu Xiumei. This standard is interpreted by the Chinese Society of Laboratory Animal Science, the technical management unit entrusted by the Ministry of Science and Technology. This standard was first issued in January 1994.
1 Scopewww.bzxz.net
National Standard of the People's Republic of China
Laboratory animals
Formula feeds
Determination of routine nutrients
Laboratory animais --Formula feeds-Determination of routine nutrientsGB/T 14924. .. 2001
Replaces GB11921 -1991
This standard specifies the determination method of conventional nutrients in compound feeds for experimental animals, namely the determination method of moisture, crude protein, crude fat, crude fiber, crude ash, calcium and total phosphorus in compound feeds. This standard is applicable to the determination of moisture, crude protein, crude fat, crude fiber, crude ash, calcium and total phosphorus in compound feeds and their raw materials for experimental animals such as mice, rats, rabbits, guinea pigs, hamsters, dogs and monkeys. 2 Referenced standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard is published, the versions shown are valid. All standards will be revised, and the parties using this standard should explore the possibility of using the latest versions of the following standards. GB/T6432—1994 Determination method of crude protein in feed GB/T6433---1994 Determination method of crude fat in feed Determination method of crude fiber in feed
GB/T 6434—1994
Determination method of moisture in feed
GB/T 6435—1986
GB/T 6436—1992
Determination method of calcium in feed
GB/T6437--1992 Determination method of total phosphorus in feed Photometric method Determination method of crude ash in feed
GB/T 6438—-1992
GB/T 12393--1990
GB/T 12398-—1990
Determination method of phosphorus in food
Determination method of calcium in food
ISO6490-2:1983 Animal feedm
3 Determination method
3.1 Determination of water content in compound feed
Perform in accordance with the provisions of GB/T6435.
3.2 Determination of crude protein in compound feed
According to GB/T6432.
3.3 Determination of crude fat in compound feed
According to GB/T6433.
3.4 ​​Determination of crude fiber in compound feed
According to GB/T6434.
——Atomic absorption spectrophotometry
Determination of calcium content
Approved by the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China on August 29, 2001 and implemented on May 1, 2002
3.5 Determination of crude ash in compound feed
According to GB/T6438.
3.6 Determination of calcium in compound feed
GB/T14924.9—2001
3.6.1 Method 1: in accordance with GB/T12398. 3.6.2 Method 2: in accordance with GB/T6436. 3.7 Determination of total phosphorus in compound feed
3.7.1 Method 1: in accordance with GB/T6437. 3.7.2 Method 2: in accordance with GB/T12393. S10
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