How can nutritional strategies and feed technologies in pig production affect the logistical costs of manure distribution?

Afonso, Esther Ramalho; Nacimento, Rafael Araújo; Palhares, Julio César Pascale; Gameiro, Augusto Hauber

doi:10.37496/rbz4920190045

Cited by 1 publication

(1 citation statement)

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“…N-reduced feeding is used on an increasing number of farms in Europe, as indicated by the number of funded projects and as shown by studies on feeding strategies for reducing N [137][138][139]. The regulatory requirement to limit N entries via organic fertilizer [140] leads to several strategies for optimizing N efficiency in animal production systems and for reducing N excretion using rations with lower total N. The implementation of resource-efficient feeding strategies will continue over the next few years, which will likely result in a lower amount of produced N in the future.…”

Section: N-excretionmentioning

confidence: 99%

Critical discussion of the current environmental risk assessment (ERA) of veterinary medicinal products (VMPs) in the European Union, considering changes in animal husbandry

et al. 2021

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Background Veterinary medicinal products (VMPs) administered to livestock might affect the environment. Therefore, an environmental risk assessment (ERA) is conducted during the approval process of VMPs. In the European Union (EU), the ERA, which was established approximately 10 years ago, consists of two phases. In the present review, we examined the first phase. In this phase, VMPs are subjected to a decision-making process comprising 19 questions and several tables with default values published in the “Guideline on environmental impact assessment for veterinary medicinal products in support of the VICH guidelines GL6 and GL38 (European Medicines Agency 2016).” Since a proportion of livestock husbandry systems is currently shifting toward ecological husbandry and free-range production systems, there is a lower risk of VMP consumption in general, but livestock excretions possibly containing VMPs might be directly released into the environment instead of being stored and applied as manure. In the present study, the first phase of the current ERA of VMPs in the EU was critically discussed with respect to the changes in animal husbandry. The large number of default values used in the ERA were checked for topicality. In a three-step approach, firstly trends and changes in animal husbandry in Europe that might be relevant for the ERA were collected, secondly, the interactions between Phase I and animal husbandry were evaluated and thirdly, the default values used in Phase I were verified in order to identify research gaps. Results Several default values used in the current ERA were identified as outdated. Together with the lack of valid data (e.g., on animal husbandry systems or VMP treatments), this may have an impact on the predicted environmental concentration (PEC) as the central decision threshold of the ERA. Conclusions The results of the present study indicate that an update of the ERA of VMPs in the EU is required to consider the changes in animal husbandry. Several aspects related to this issue are critically discussed.

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Section: N-excretionmentioning

confidence: 99%