|
|
|
|
|
| McLean, Dr Barbara; Frost, David. |
| 1. Organophosphate (OP) based dips offer a broad spectrum control against all major ectoparasites in the UK. However, there is continuing controversy over the safety to dip operators and the environment. The use of OPs is prohibited by organic standards, primarily because of concerns about mammalian toxicity. 2. Organic farmers are permitted to use synthetic pyrethroids (SPs)(dip products and pour-on products) and/or macrocyclic lactones (injectable products) to treat/control ectoparasites providing a derogation has been obtained from the certifying body. 3. SPs have been shown to be considerably more toxic to aquatic organisms than OPs. The environmental impact of SPs is not limited to levels in dip but also to residues in sheep fleeces. SPs may be... |
| Tipo: Report |
Palavras-chave: Environmental aspects; Health and welfare. |
| Ano: 2003 |
URL: http://orgprints.org/10825/1/ectoparasitewales.pdf |
| |
|
|
| Van Diepen, Pauline; McLean, Dr Barbara; Frost, David. |
| Organic livestock farming has grown in Wales in recent years. It is focused on producing animals from a predominantly forage-based system, with an emphasis on maintaining animal health through improved welfare and a reduction in the use of routine, conventional veterinary treatments. Breeding and feeding are important factors of the health and welfare of farm animals in organic systems. The guidelines of EU regulation (EC) 1804/1999 address the issue of sourcing of (breeding) stock. Moreover, only activities such as the use of genetically modified organisms (GMOs) and embryo transfer are excluded, and few provisions are included that concern breeding. A number of breeds used in conventional farming could be considered as ’high maintenance’ animals... |
| Tipo: Report |
Palavras-chave: Breeding and genetics. |
| Ano: 2007 |
URL: http://orgprints.org/10822/1/breeds07.pdf |
| |
|
|
|
