Robert Pieper
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View article: Establishing a spatial framework for investigating PFAS in wild game animals: Evidence from wild boar livers in Brandenburg, Germany
Establishing a spatial framework for investigating PFAS in wild game animals: Evidence from wild boar livers in Brandenburg, Germany Open
PER: and polyfluoroalkyl substances (PFAS) are a group of anthropogenic persistent pollutants, which are ubiquitously distributed in the environment and are linked to several adverse health effects. To monitor PFAS in the environment, wild…
View article: Influence of copper level and source on performance, tissue accumulation, and faecal excretion in fattening pigs
Influence of copper level and source on performance, tissue accumulation, and faecal excretion in fattening pigs Open
Copper (Cu) supplementation is essential in pig nutrition; however, its effects on performance, trace element accumulation in edible tissues, and environmental excretion require careful evaluation. In the present study a total of 24 male, …
View article: Vitamin A concentration in bovine liver and milk does not only depend on characteristics of the farming system
Vitamin A concentration in bovine liver and milk does not only depend on characteristics of the farming system Open
The study examined the vitamin A status in commercially managed suckler cows and lactating dairy cows and identified primary influencing factors. Liver retinyl ester concentrations were higher in multiparous than primiparous cows ( p < 0.0…
View article: Per- and polyfluoroalkyl substances in livers of wild boar (Sus scrofa) in Germany: analysis of official monitoring data in relation to local land use characteristics
Per- and polyfluoroalkyl substances in livers of wild boar (Sus scrofa) in Germany: analysis of official monitoring data in relation to local land use characteristics Open
Per- and polyfluoroalkyl substances (PFAS) constitute a group of anthropogenic compounds that are ubiquitously distributed in the environment due to their widespread use in various industrial processes and consumer products. Among foodstuf…
View article: Release of Hypoglycin A from Hypoglycin B and Decrease of Hypoglycin A and Methylene Cyclopropyl Glycine Concentrations in Ruminal Fluid Batch Cultures
Release of Hypoglycin A from Hypoglycin B and Decrease of Hypoglycin A and Methylene Cyclopropyl Glycine Concentrations in Ruminal Fluid Batch Cultures Open
The transformation of hypoglycin A (HGA), hypoglycin B (HGB), and methylene cyclopropyl glycine (MCPrG) in ruminal fluid batch cultures was investigated, and the effect of these toxins on the batch culture microorganisms using microbial me…
View article: Grazing sheep on pastures with tansy ragwort ( <i>Senecio jacobaea</i> L.) – results of a two-year study on ingested pyrrolizidine alkaloids and transfer into animal organs
Grazing sheep on pastures with tansy ragwort ( <i>Senecio jacobaea</i> L.) – results of a two-year study on ingested pyrrolizidine alkaloids and transfer into animal organs Open
Tansy ragwort (Senecio jacobaea L.) growing in animal pasture may pose a risk to humans due to the potential transfer of pyrrolizidine alkaloids (PAs) into food of animal origin. Here, we investigated what amount of PAs corresponds to the …
View article: How do we feed our livestock? Knowledge, perceptions and informational needs of the public and farmers in Germany
How do we feed our livestock? Knowledge, perceptions and informational needs of the public and farmers in Germany Open
Little is known about knowledge and perceptions of the public and farmers on livestock feed. However, it is important to know their perspectives to find widely accepted and sustainable solutions in agriculture, which account for animal wel…
View article: Transport of Neutral Amino Acids in the Jejunum of Pigs with Special Consideration of L-Methionine
Transport of Neutral Amino Acids in the Jejunum of Pigs with Special Consideration of L-Methionine Open
Background: Methionine (Met) is a popular nutritional supplement in humans and animals. It is routinely supplemented to pigs as L-Met, DL-Met, or DL-2-hydroxy-4-(methylthio) butanoic acid (DL-HMTBA). Methods: We investigated the effect of …
View article: A comparison of wild boar and domestic pig microbiota does not reveal a loss of microbial species but an increase in alpha diversity and opportunistic genera in domestic pigs
A comparison of wild boar and domestic pig microbiota does not reveal a loss of microbial species but an increase in alpha diversity and opportunistic genera in domestic pigs Open
The microbiome of wild animals is believed to be co-evolved with host species, which may play an important role in host physiology. It has been hypothesized that the rigorous hygienic practices in combination with antibiotics and diets wit…
View article: Ensiling conditions and changes of cannabinoid concentration in industrial hemp
Ensiling conditions and changes of cannabinoid concentration in industrial hemp Open
Hemp (Cannabis sativa L.) is an important source of fibre and seed oil and protein. By-products of industrial hemp fibre production, like hemp seeds and cakes, can be used as feed for all animal species as fat and protein source and the wh…
View article: A comparison of wild boar and domestic pig microbiota does not reveal a loss of microbial species but an increase in alpha diversity and opportunistic genera in domestic pigs
A comparison of wild boar and domestic pig microbiota does not reveal a loss of microbial species but an increase in alpha diversity and opportunistic genera in domestic pigs Open
The microbiome of wild animals is believed to be co-evolved with host species, which may play an important role in host physiology. It has been hypothesized that the rigorous hygienic practice in combination with antibiotics and diets with…
View article: Toxicokinetic modeling of the transfer of polychlorinated biphenyls (PCBs) and polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs) into milk of high-yielding cows during negative and positive energy balance
Toxicokinetic modeling of the transfer of polychlorinated biphenyls (PCBs) and polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs) into milk of high-yielding cows during negative and positive energy balance Open
A toxicokinetic modeling approach was used to study the transfer of 7 polychlorinated dibenzo-p-dioxins (PCDDs), 10 dibenzofurans (PCDFs), 12 dioxin-like polychlorinated biphenyls (dl-PCB) and 3 non-dioxin like (ndl) PCBs in dairy cows. Th…
View article: Experimental Study on the Transfer of Polychlorinated Biphenyls (PCBs) and Polychlorinated Dibenzo-<i>p</i>-dioxins and Dibenzofurans (PCDD/Fs) into Milk of High-Yielding Cows during Negative and Positive Energy Balance
Experimental Study on the Transfer of Polychlorinated Biphenyls (PCBs) and Polychlorinated Dibenzo-<i>p</i>-dioxins and Dibenzofurans (PCDD/Fs) into Milk of High-Yielding Cows during Negative and Positive Energy Balance Open
Dioxin-like polychlorinated biphenyls (dl-PCBs) as well as polychlorinated dibenzo-p-dioxins (PCDDs) and dibenzofurans (PCDFs) are a major concern for food safety, especially in fat-containing foods of animal origin, such as milk. Due to t…
View article: Analysis of number, size and spatial distribution of rifle bullet-derived lead fragments in hunted roe deer using computed tomography
Analysis of number, size and spatial distribution of rifle bullet-derived lead fragments in hunted roe deer using computed tomography Open
The use of lead-based rifle bullets in hunting poses a risk to human and animal health when bullet fragments remain in the game meat. The objective of this study was to assess, for the first time, the number, size and spatial distribution …
View article: Detection of Hypoglycin A and MCPrG Metabolites in the Milk and Urine of Pasture Dairy Cows after Intake of Sycamore Seedlings
Detection of Hypoglycin A and MCPrG Metabolites in the Milk and Urine of Pasture Dairy Cows after Intake of Sycamore Seedlings Open
Hypoglycin A (HGA), methylenecyclopropylglycine (MCPrG), hypoglycin B (HGB), and γ-glutamyl-α-(methylenecyclopropyl) glycine (γ-glutamyl-MCPrG) are secondary plant metabolites occurring in sycamore maple (Acer pseudoplatanus) as well as se…
View article: Toxicokinetic modelling of the transfer of non-dioxin like polychlorinated biphenyls from feed into edible tissues of pigs
Toxicokinetic modelling of the transfer of non-dioxin like polychlorinated biphenyls from feed into edible tissues of pigs Open
Non-dioxin-like polychlorinated biphenyls (ndl-PCBs) are persistent environmental pollutants that accumulate in the tissues of exposed animals and humans. Contaminated feed can lead to ndl-PCB contaminated food of animal origin; such foods…
View article: Long-term dietary exposure to copper in the population in Germany – Results from the BfR MEAL study
Long-term dietary exposure to copper in the population in Germany – Results from the BfR MEAL study Open
The German Total Diet Study (BfR MEAL Study) measured copper in 356 foods. In 105 of these foods copper was determined separately for conventionally and organically pooled samples. Mammalian liver, nuts, oilseeds, cocoa powder and chia see…
View article: Peat and disinfectant powder used in swine husbandry systems – quantification of oral intake using toxic metals as potential markers
Peat and disinfectant powder used in swine husbandry systems – quantification of oral intake using toxic metals as potential markers Open
The use of enrichment and bedding materials in pig husbandry intends to comply with the animals’ behavioural needs to perform natural exploratory behaviour, which is strongly connected to foraging behaviour. It can thus be assumed that pig…
View article: Transfer of cannabinoids into the milk of dairy cows fed with industrial hemp could lead to Δ9-THC exposure that exceeds acute reference dose
Transfer of cannabinoids into the milk of dairy cows fed with industrial hemp could lead to Δ9-THC exposure that exceeds acute reference dose Open
The industrial hemp sector is growing and, in recent years, has launched many novel hemp-derived products, including animal feed. It is, however, unclear to what extent individual cannabinoids from industrial hemp transfer from the feed in…
View article: Transfer of polychlorinated dibenzo-<i>p</i>-dioxins and dibenzofurans (PCDD/Fs) and polychlorinated biphenyls (PCBs) from oral exposure into cow’s milk – part II: toxicokinetic predictive models for risk assessment
Transfer of polychlorinated dibenzo-<i>p</i>-dioxins and dibenzofurans (PCDD/Fs) and polychlorinated biphenyls (PCBs) from oral exposure into cow’s milk – part II: toxicokinetic predictive models for risk assessment Open
Understanding the transfer of polychlorinated dibenzo- p -dioxins (PCDDs) and dibenzofurans (PCDFs) as well as polychlorinated biphenyls (PCBs) from oral exposure into cow’s milk is not purely an experimental endeavour, as it has produced …
View article: Toxicokinetic Modeling of the Transfer of Non-Dioxin-like Polychlorinated Biphenyls (ndl-PCBs) from Feed and Soil into Laying Hens and Their Eggs
Toxicokinetic Modeling of the Transfer of Non-Dioxin-like Polychlorinated Biphenyls (ndl-PCBs) from Feed and Soil into Laying Hens and Their Eggs Open
Non-dioxin-like polychlorinated biphenyls (ndl-PCBs) are a subclass of persistent bioaccumulative pollutants able to enter the food chain. Toxicokinetic models for the transfer of the six ndl-PCB congeners (PCBs 28, 52, 101, 138, 153, and …
View article: Literature review and qualitative risk assessment on the role of feed materials in African Swine Fever Virus transmission
Literature review and qualitative risk assessment on the role of feed materials in African Swine Fever Virus transmission Open
In Germany, the African swine fever virus (ASFV) was first detected in a wild boar in September 2020 in the German federal state of Brandenburg near the border to Poland. It has since been spreading with currently more than 3,960 confirmed…
View article: Transfer of polychlorinated dibenzo-<i>p</i>-dioxins and dibenzofurans (PCDD/Fs) and polychlorinated biphenyls (PCBs) from oral exposure into cow’s milk – Part I: state of knowledge and uncertainties
Transfer of polychlorinated dibenzo-<i>p</i>-dioxins and dibenzofurans (PCDD/Fs) and polychlorinated biphenyls (PCBs) from oral exposure into cow’s milk – Part I: state of knowledge and uncertainties Open
Polychlorinated dibenzo- para -dioxins (PCDDs) and dibenzofurans (PCDFs) (collectively and colloquially referred to as ‘dioxins’) as well as polychlorinated biphenyls (PCBs) are persistent and ubiquitous environmental contaminants that may…
View article: Investigations on the Transfer of Quinolizidine Alkaloids from <i>Lupinus angustifolius</i> into the Milk of Dairy Cows
Investigations on the Transfer of Quinolizidine Alkaloids from <i>Lupinus angustifolius</i> into the Milk of Dairy Cows Open
Lupin varieties with a low content of quinolizidine alkaloids (QAs) like blue sweet lupin (BSL) have long been used as a protein source for dairy cows. A health concern for humans may arise from the transfer of acute toxic QAs from feed in…
View article: Transfer of Non-Dioxin-Like Polychlorinated Biphenyls (ndl-PCBs) from Feed and Soil into Hen Eggs
Transfer of Non-Dioxin-Like Polychlorinated Biphenyls (ndl-PCBs) from Feed and Soil into Hen Eggs Open
Understanding the transfer of non-dioxin-like polychlorinated biphenyls (ndl-PCBs) into foods of animal origin is crucial for human health risk assessment. In two experiments, we investigated the transfer of ndl-PCBs from contaminated feed…
View article: Effects of ensiling conditions on pyrrolizidine alkaloid degradation in silages mixed with two different <i>Senecio</i> spp.
Effects of ensiling conditions on pyrrolizidine alkaloid degradation in silages mixed with two different <i>Senecio</i> spp. Open
Pyrrolizidine alkaloid (PA) producing plants like Senecio jacobaea or Senecio vernalis are undesirable in fields for forage production, since PA are toxic to animals and humans. Previous studies have shown that ensiling can decrease the PA…