Feed Additive Residues, Determination of Trace Amounts of Nitrofurazone in Milk

1964 ◽  
Vol 12 (2) ◽  
pp. 121-123 ◽  
Author(s):  
L. R. Stone
Keyword(s):  
Feed Additive ◽  
Residues Determination

Feed Additive Residues, Determination of 3-Amino-5-nitro-o-toluamide (ANOT) in Chicken Tissues

1961 ◽  
Vol 9 (3) ◽  
pp. 201-204 ◽  
Author(s):  
B. J. Thiegs ◽  
G. N. Smith ◽  
J. L. Bevirt
Keyword(s):  
Feed Additive ◽  
Chicken Tissues ◽  
Residues Determination

Feed Additive Residues, Determination of 3,5-Dinitro-o-toluamide (Zoalene) in Chicken Tissues

1961 ◽  
Vol 9 (3) ◽  
pp. 197-201 ◽  
Author(s):  
G. N. Smith ◽  
B. J. Thiegs ◽  
M. G. Swank
Keyword(s):  
Feed Additive ◽  
Chicken Tissues ◽  
Residues Determination

Application of the CEN/ISO Standard for Phytase Activity Measurements to a New Phytase Product: Determination of a Robust Conversion Factor by an Interlaboratory Study for Screening Feed Samples

2019 ◽  
Vol 102 (6) ◽  
pp. 1808-1813
Author(s):  
María José González de la Huebra ◽  
Piotr Robouch ◽  
Håkan Emteborg ◽  
Stefano Bellorini ◽  
Aneta Cizek-Stroh ◽  
...  
Keyword(s):  
Conversion Factor ◽  
Feed Additives ◽  
Phytase Activity ◽  
Feed Additive ◽  
The European Union ◽  
Iso Standard ◽  
Official Control ◽  
Activity Measurements ◽  
Feed Samples

Abstract Background: Phytase-based preparations are important feed additives currently authorised in the European Union (EU). The European Standard (EN) and International Organization for Standardization (ISO) standard 30024 describes a harmonized method for the determination of phytase activity and is fit-for-purpose for official control of a group of phytase products. However, it is not suitable for the determination of the phytase activity of a new feed additive encoded as 4a16 in the EU Register of Feed Additives, to which a slightly different phytase activity definition has been attributed. Objective: To establish a robust conversion factor to support official control laboratories that apply the EN ISO method when monitoring feed products containing 4a16. Methods: The phytase activity of test materials was determined by the participants using the EN ISO and/or the “applicant” methods. Results: Robust relative SDs for repeatability and for reproducibility of the methods applied for the determination of the phytase activity in the materials containing the 4a16 feed additive ranged from 2.6 to 22% (EN ISO method) and from 2.4 to 39% (applicant method). Conclusions: The data obtained confirmed the performance characteristics published for other phytase-based feeds in the related standard methods. These results allowed us to estimate a factor of 2.68 to convert phytase activities measured with the EN ISO method into the enzyme activity measured with the applicant method. Highlights: The obtained conversion factor will allow EU official laboratories to screen feed samples supplemented with the 4a16 phytase by applying EN ISO Standard 30024.

Application of the CEN/ISO Standard for Phytase Activity Measurements to a New Phytase Product: Determination of a Robust Conversion Factor by an Interlaboratory Study for Screening Feed Samples

2019 ◽  
Vol 102 (6) ◽  
pp. 1808-1813
Author(s):  
María José González de la Huebra ◽  
Piotr Robouch ◽  
Håkan Emteborg ◽  
Stefano Bellorini ◽  
Aneta Cizek-Stroh ◽  
...  
Keyword(s):  
Conversion Factor ◽  
Feed Additives ◽  
Phytase Activity ◽  
Feed Additive ◽  
The European Union ◽  
Iso Standard ◽  
Official Control ◽  
Activity Measurements ◽  
Feed Samples

Background: Phytase-based preparations are important feed additives currently authorised in the European Union (EU). The European Standard (EN) and International Organization for Standardization (ISO) standard 30024 describes a harmonized method for the determination of phytase activity and is fit-for-purpose for official control of a group of phytase products. However, it is not suitable for the determination of the phytase activity of a new feed additive encoded as 4a16 in the EU Register of Feed Additives, to which a slightly different phytase activity definition has been attributed. Objective: To establish a robust conversion factor to support official control laboratories that apply the EN ISO method when monitoring feed products containing 4a16. Methods: The phytase activity of test materials was determined by the participants using the EN ISO and/or the “applicant” methods. Results: Robust relative SDs for repeatability and for reproducibility of the methods applied for the determination of the phytase activity in the materials containing the 4a16 feed additive ranged from 2.6 to 22% (EN ISO method) and from 2.4 to 39% (applicant method). Conclusions: The data obtained confirmed the performance characteristics published for other phytase-based feeds in the related standard methods. These results allowed us to estimate a factor of 2.68 to convert phytase activities measured with the EN ISO method into the enzyme activity measured with the applicant method. Highlights: The obtained conversion factor will allow EU official laboratories to screen feed samples supplemented with the 4a16 phytase by applying EN ISO Standard 30024.

Chemical Residues, Determination of Perchloroethylene in Strawberries

1954 ◽  
Vol 2 (4) ◽  
pp. 202-203 ◽  
Author(s):  
D. A. Mapes ◽  
S. A. Shrader
Keyword(s):  
Chemical Residues ◽  
Residues Determination

Determination of biochemical and microbiological content of black pepper (Piper nigrum L.) and its potential option as animal feed additive

2015 ◽  
Vol 18 (1) ◽  
pp. 7 ◽  
Author(s):  
EK Ndelekwute ◽  
HO Uzegbu ◽  
ED Assam ◽  
C Nwokoro
Keyword(s):  
Animal Feed ◽  
Black Pepper ◽  
Feed Additive ◽  
Piper Nigrum ◽  
Potential Option

Herbicide Residues, Determination of 3-Amino-1,2,4,-triazole Residues in Sugarcane

1966 ◽  
Vol 14 (1) ◽  
pp. 90-94 ◽  
Author(s):  
H. W. Hilton ◽  
G. K. Uyehara
Keyword(s):  
Herbicide Residues ◽  
Residues Determination
Sign in / Sign up

Export Citation Format

Share Document