scholarly journals Cyromazine Determination in Poultry based Animal Feedstuffs by HPLC/DAD using QuEChERS Methodology

2018 ◽  
Vol 13 (5) ◽  
Author(s):  
Christos Christogiorgos ◽  
Ioannis Sarakatsianos ◽  
Victoria Samanidou
Keyword(s):  
Animal Feedstuffs

Prevalence of Aspergillus species on selected Colombian animal feedstuffs and ability of Aspergillus section Flavi to produce aflatoxins

2009 ◽  
Vol 2 (1) ◽  
pp. 31-34 ◽  
Author(s):  
G. Diaz ◽  
M. Lozano ◽  
A. Acuña
Keyword(s):  
Liquid Chromatography ◽  
Cottonseed Meal ◽  
Sunflower Seed ◽  
Seed Meal ◽  
Aspergillus Section Flavi ◽  
Wheat Middlings ◽  
Highperformance Liquid Chromatography ◽  
Animal Feedstuffs ◽  
Aflatoxin B ◽  
Aspergillus Section

A total of 57 samples of feedstuffs commonly used for animal nutrition in Colombia (maize, soybean, sorghum, cottonseed meal, sunflower seed meal, wheat middlings and rice) were analysed for Aspergillus contamination. Aspergillus fungi were identified at species level and their ability to produce aflatoxins was determined by highperformance liquid chromatography. A total of 31 of the feedstuffs analysed (54.4%) were found to contain Aspergillus spp. The most contaminated substrate was maize (100%) followed by cottonseed meal (80%), sorghum (60%) and wheat middlings (60%). Soybean showed lower levels of contamination (10%). No Aspergillus spp. could be isolated from rice or sunflower seed meal. Total Aspergillus strains isolated were 50, with 28 belonging to section Flavi (56%), 17 to section Nigri (34%), 4 to section Circumdati (8%) and 1 to section Fumigati (2%). Among section Flavi, 17 isolates were identified as A. flavus, seven as A. parasiticus, two as A. oryzae and two as A. tamarii. Production of aflatoxins by Aspergillus section Flavi was screened by liquid chromatography. About three quarters of the A. flavus strains (76.5%) produced aflatoxin B1 (0.2 to 240.4 µg/g) and aflatoxin B2 (0.2 to 1.6 µg/g), while all A. parasiticus strains produced the four naturally occurring aflatoxins (aflatoxin B1 from 0.6 to 83.5 µg/g, aflatoxin B2 from 0.3 to 4.8 µg/g, aflatoxin G1 from 0.4 to 19.3 µg/g and aflatoxin G2 from 0.1 to 1.0 µg/g). This is the first study demonstrating the presence of highly toxigenic Aspergillus fungi in Colombian animal feedstuffs.

Prediction of crude protein and neutral detergent fibre concentration in residues of in situ ruminal degradation of pasture samples by near-infrared spectroscopy (NIRS)

2016 ◽  
Vol 56 (9) ◽  
pp. 1504 ◽  
Author(s):  
J. P. Keim ◽  
H. Charles ◽  
D. Alomar
Keyword(s):  
Infrared Spectroscopy ◽  
Near Infrared Spectroscopy ◽  
Crude Protein ◽  
Near Infrared ◽  
External Validation ◽  
Neutral Detergent Fibre ◽  
Insufficient Amount ◽  
Ruminal Degradation ◽  
Animal Feedstuffs

An important constraint of in situ degradability studies is the need to analyse a high number of samples and often with insufficient amount of residue, especially after the longer incubations of high-quality forages, that impede the study of more than one nutritional component. Near-infrared spectroscopy (NIRS) has been established as a reliable method for predicting composition of many entities, including forages and other animal feedstuffs. The objective of this work was to evaluate the potential of NIRS for predicting the crude protein (CP) and neutral detergent fibre (NDF) concentration in rumen incubation residues of permanent and sown temperate pastures in a vegetative stage. In situ residues (n = 236) from four swards were scanned for their visible-NIR spectra and analysed for CP and NDF. Selected equations developed by partial least-squares multivariate regression presented high coefficients of determination (CP = 0.99, NDF = 0.95) and low standard errors (CP = 4.17 g/kg, NDF = 7.91 g/kg) in cross-validation. These errors compare favourably to the average concentrations of CP and NDF (146.5 and 711.2 g/kg, respectively) and represent a low fraction of their standard deviation (CP = 38.2 g/kg, NDF = 34.4 g/kg). An external validation was not as successful, with R2 of 0.83 and 0.82 and a standard error of prediction of 14.8 and 15.2 g/kg, for CP and NDF, respectively. It is concluded that NIRS has the potential to predict CP and NDF of in situ incubation residues of leafy pastures typical of humid temperate zones, but more robust calibrations should be developed.

ChemInform Abstract: Hydrolysis of Tannery Wastes to Protein Meal for Animal Feedstuffs: A Process and Product Evaluation.

ChemInform ◽  
2010 ◽  
Vol 25 (34) ◽  
pp. no-no
Author(s):  
E. MONTONERI ◽  
G. RIZZI ◽  
A. RIZZI ◽  
A. MORDENTI ◽  
A. BAULI ◽  
...  
Keyword(s):  
Product Evaluation ◽  
Protein Meal ◽  
Tannery Wastes ◽  
Animal Feedstuffs ◽  
Hydrolysis Of

An investigation into the level of fusarium mycotoxins in samples of UK wheat straw used for bedding livestock

2007 ◽  
Vol 2007 ◽  
pp. 106-106
Author(s):  
C. I. White ◽  
S. G. Edwards ◽  
A. H. Stewart
Keyword(s):  
European Commission ◽  
Wheat Straw ◽  
Potential Risk ◽  
Production Systems ◽  
Fusarium Mycotoxins ◽  
Young Pigs ◽  
Animal Feedstuffs ◽  
The Uk

Straw based production systems are common in the UK compared to European, Asian and American competitors. The effects of mycotoxins in cereal feed on livestock performance are relatively well documented with pigs being particularly sensitive to mycotoxicosis. The European Commission has recently set guideline limits for fusarium mycotoxins in animal feedstuffs (Anon, 2006). Guidance limits for feedstuffs for young pigs is 900 ppb deoxynivalenol and 100 ppb zearalenone. However, any possible effects of ingestion of fusarium mycotoxins from bedding have not been enumerated. This project was designed to evaluate the potential risk of mycotoxin challenge from straw bedding in the UK.

A Possible Enzymic Assay for Trichothecene Mycotoxins in Animal Feedstuffs

1975 ◽  
Vol 3 (6) ◽  
pp. 875-878 ◽  
Author(s):  
P. M. D. FOSTER ◽  
T. F. SLATER ◽  
D. S. P. PATTERSON
Keyword(s):  
Animal Feedstuffs ◽  
Enzymic Assay

Brown and Black Grease Suitability for Incorporation into Feeds and Suitability for Biofuels

2012 ◽  
Vol 75 (4) ◽  
pp. 731-737 ◽  
Author(s):  
PAULA MARIE L. WARD
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Polychlorinated Biphenyl ◽  
Methylene Chloride ◽  
Oxygen Demand ◽  
Oil And Grease ◽  
Volatile Organic ◽  
Brown Grease ◽  
Animal Feedstuffs ◽  
Food Recalls

Waste grease lipids used in animal feeds have been the cause of food recalls in Europe, where such materials were incorporated into animal feedstuffs. This resulted in unwanted residues in human food. The composition of such lipid sources has been lacking. Seventeen composite trap grease and isolated brown grease samples were analyzed. Analytes included nutrients, metals, and volatile organic compounds. Analytes were selected for relevance to wastewater treatment and resource reuse potential. Moisture averaged 89.4% and the pH was 3.8. The 5-day biological oxygen demand was 32,531 mg/liter, solids were 7.5%, and fats, oil, and grease were 48,970 mg/liter. Non–polychlorinated biphenyl volatile organic compounds were surveyed. In the 17 grease samples, 14 contained an average of 102.5 μg/liter chloroform; 11 samples contained acetone, averaging 369 μg/liter; 9 samples contained 2-butanone, with an average of 484 μg/liter; and 8 contained an average of 710 μg/liter methylene chloride and toluene at 311 μg/liter. The mean concentration of copper in 17 composite samples ranged from 15 to 239 mg/liter, iron averaged 314 mg/liter, lead means ranged from 2.5 to 24 mg/liter, and magnesium averaged 975 mg/liter. It is hypothesized that food preparation facility cleaning and chlorinated cleaning–disinfection agents combined with the organics in the low-pH environment of the traps produce potentially carcinogenic compounds. It is recommended that these waste grease materials be used as a feedstock for biofuel.

Simultaneous determination of aflatoxins G1, B1, G2, B2, in animal feedstuffs by HPTLC and RP-HPLC

1987 ◽  
Vol 10 (11) ◽  
pp. 626-628 ◽  
Author(s):  
A. Simonella ◽  
L. Torreti ◽  
C. Filipponi ◽  
A. Falgisnl ◽  
L. Ambrosii
Keyword(s):  
Simultaneous Determination ◽  
Rp Hplc ◽  
Animal Feedstuffs
Sign in / Sign up

Export Citation Format

Share Document