Anticoccidials are compounds that are widely used as feed additives to prevent and treat coccidiosis. They are licensed for use in a prescribed concentration and during a certain time interval for broilers and pullets but not for laying hens. It was shown in the past that carry-over at the feeding mill is found to be the main reason for the presence of residues in eggs. An animal experiment was set up to investigate the effect of carry-over at the feeding mill on the presence of residues of anticoccidials in eggs. For the compounds diclazuril, robenidine, halofuginone and nicarbazin in combination with narasin, two concentration levels were tested: the maximum allowed concentration for broilers (100%) and a concentration corresponding to 5% carry-over during feed preparation. Also dimetridazole was included in the experiment but only at one concentration level. Eggs were sampled during treatment (14 days) and for a period of 30 days after withdrawal of the anticoccidial-containing feed. Residues were determined, and deposition and depletion curves were generated. Analyses were performed by ELISA and LC-MS/MS. For all compounds, substantial residues could be found in the 5% groups, which points out the risk of carry-over at the feeding mill. The distribution of the residues between egg yolk and white was determined by analyzing both fractions.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1021/jf050836r | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Modelling the compensatory and carry-over effects between physical activity and fruit-vegetable consumption in young adults.
Sci Rep
December 2024
School of Business, Social and Decision Sciences, Constructor University, Campus Ring 1, Bremen, 28759, Germany.
Physical activity (PA) and fruit and vegetable consumption (FVC) are crucial factors jointly affecting young adults' physical and mental health. However, the psychosocial interactive mechanisms of these behaviors remain understudied. Using a two-wave prospective design over two months, this study investigated the psychological mechanisms underlying multiple health behavior change (MHBC) through a novel two-layer social-cognitive framework, the Compensatory Carry-Over Action Model (CCAM), among 322 Chinese college students (19.
View Article and Find Full Text PDFTranscriptomic alterations in the ovine caruncular endometrium due to imbalanced nutrition and FSH-induced ovarian hyperstimulation.
BMC Genomics
December 2024
Institute of Veterinary Anatomy, Vetsuisse Faculty, University of Zurich (UZH), Winterthurerstrasse 260, Zürich, CH-8057, Switzerland.
Background: Imbalanced diet and exogenous gonadotrophins affect uterine function and morphology. In sheep, FSH-induced superovulation alters implantation-related gene expression, influenced by both treatment and diet. In this study, we used deep RNA sequencing (NGS, RNA-Seq) to expand our understanding of these effects on the caruncular endometrium.
View Article and Find Full Text PDFPerformance, nutrient digestibilities, and metabolic profiles of Holstein calves fed whole milk or milk replacer at two feeding levels.
J Dairy Sci
December 2024
Trouw Nutrition R&D, P.O. Box 299, 3800 AG, Amersfoort, the Netherlands;. Electronic address:
The macronutrient composition of common milk replacers (MR) largely differs from bovine whole milk (WM). These differences are more nutritionally relevant when calves receive higher milk allowances. Therefore, the present study compared fresh WM with a conventional MR fed at 2 level of feeding allowances evaluating growth performance, apparent total-tract nutrient digestibilities, nitrogen (N) balance, and serum metabolite profiles in calves.
View Article and Find Full Text PDFOchratoxin A in Poultry Supply Chain: Overview of Feed Occurrence, Carry-Over, and Pathognomonic Lesions in Target Organs to Promote Food Safety.
Toxins (Basel)
November 2024
Department of Veterinary Medicine, University of Bari Aldo Moro, Provincial Road to Casamassima km 3, 70100 Valenzano, Italy.
Ochratoxin A (OTA) is a mycotoxin produced by fungi species belonging to the genera spp. and spp. The proliferation of OTA-producing fungal species may occur due to inadequate practices during both the pre-harvest and post-harvest stages of feed.
View Article and Find Full Text PDFDose-dependent effect of spent coffee grounds on intake, apparent digestibility, fermentation pattern, methane emissions, microbial protein supply, and antioxidant status in Latxa sheep.
J Anim Sci
January 2024
Department of Animal Production, NEIKER - Basque Institute for Agricultural Research and Development, Basque Research and Technology Alliance (BRTA), Agroalimentary Campus of Arkaute s/n, Arcaute, Spain.
Spent coffee grounds (SCG), a byproduct rich in polyphenols, can form part of enteric CH4 mitigation strategies while promoting the circular economy. This study aimed to evaluate the effect of 3 levels of SCG inclusion in the concentrate on enteric CH4 production, feed intake, apparent digestibility, ruminal fermentation pattern, microbial protein supply, and gene expression of immune and antioxidant markers in peripheral blood of dry dairy ewes. In a replicated 4 × 4 Latin square design, 8 nonproductive Latxa ewes were assigned to a concentrate that differed in the level of SCG: Control (0 g/kg DM), SCG100 (100 g/kg DM), SCG150 (150 g/kg DM) and SCG200 (200 g/kg DM).
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!