Technical Information

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Licensed under Creative Commons Attribution 4.0 International License.

Technical Information

Diseases affecting our livestock

This document describes the sources of information, advice, methods, indicators and data processing procedures used to develop the reports. Reliability of data, as well as metadata attributes, are also described.

State NRM Plan Guiding Target:

Limit the establishment of pests and diseases and reduce the impact of existing pests State NRM Plan Representative Measure:

Number of detections of weeds, pests and disease incursions, and trends in their distribution and abundance Data collection period:

1. 2000–01 to 2015–16 Expected frequency of reporting:

Annual Data sources:

1. Johne’s Disease in cattle beef herds, dairy herds and sheep flocks from the National Animal Health Information System.

2. Biosecurity SA Animal Health Bovine Johne’s Disease (BJD) Annual Report 2015-2016, Biosecurity SA.

3. Biosecurity SA Animal Health Ovine Johne’s Disease (OJD) Annual Report 2015-16, Biosecurity SA.

4. Biosecurity SA Animal Health Footrot Control Program Annual Report 2015-2016, Biosecurity SA.

5. Biosecurity SA Animal Health Sheep Lice Control Project Annual Report 2015-16, Biosecurity SA.

Indicators used:

1. Trend of occurrence of livestock diseases of economic significance in South Australia including flocks/herds affected by Bovine Johne’s Disease, Ovine Johne’s Disease, virulent sheep footrot and market detections of sheep with lice.

2. Presence of significant livestock diseases.

Methods of data collection and processing:

Data for this report were obtained from reports produced by Biosecurity SA (Animal Health group) on disease monitoring program results and from records stored in the National Animal Health Information System. Data were summarised by the number of flocks/herds that were considered infected by Bovine Johne’s Disease, Ovine Johne’s Disease, sheep footrot and sheep lice within a financial year.

Most globally significant livestock diseases are not present in Australia. Mad cow disease (Bovine Spongiform Encephalopathy) has never been detected in Australia, scrapie had been detected once in an imported sheep in 1952 and was promptly managed, foot and mouth disease, has not been detected since a likely detection in 1872.

Future reporting measures:

None.

The following government agencies contributed to this report:

The Department of Environment, Water and Natural Resources (DEWNR) and Department of Primary Industries and Regions SA (PIRSA), Biosecurity SA.

The following non-government agencies contributed to this report:

None.

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Key stakeholders:

DEWNR, PIRSA, Biosecurity SA, NRM Boards, and agriculture industry.

Information reliability scoring:

Information is scored for reliability based on average scores given for information currency and applicability, and its level of spatial representation (Tables 1–3).

Table 1. Information currency Reliability Criteria

5 Information up to 3 years old 4 Information up to 5 years old 3 Information up to 7 years old 2 Information up to 10 years old 1 Information >10 years old

Table 2. Applicability of the information Reliability Criteria

5 All data based on direct indicators of the measure 4 Most data based on direct indicators of the measure 3 Most data based on indirect indicators of the measure 2 All data based on indirect indicators of the measure 1 Data are based on expert opinion of the measure

Table 3. Spatial representation of information (sampling design) Reliability Criteria

5 Information is collected from across the whole region/state (or whole distribution of asset within the region/state) using a stratified sampling design

4 Information is collected from across the whole region/state (or whole distribution of asset within the region/state) using a sampling design that is not stratified

3 Information is collected from an area that represents less than half the spatial distribution of the asset within the region/state

2 Information is collected from an area that represents less than 25% the spatial distribution of the asset within the region/state

1 Information is collected from an area that represents less than 5% the spatial distribution of the asset within the region/state or spatial representation unknown

Based on Tables 1, 2 and 3 above, respectively, the information relating to the condition presented in this report has a reliability score of (5+5+4)/3 = 4.67, rounded to 5 (Excellent).

This report is linked to the following report cards/snapshots:

1. What are the distribution and abundance of pest animals?

2. What are the distribution and abundance of weeds?

3. What are the distribution and abundance of aquatic pests?

4. Diseases and invertebrate pests affecting our crops.

5. Diseases affecting our aquatic species.

6. Diseases affecting our native plants and animals.

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Metadata description:

Project/dataset name: South Australia Key Livestock disease occurrence Data provided 28 November 2016

Abstract/description Dataset is from various reports produced by Biosecurity SA which track livestock diseases.

Including surveillance for market assurance (e.g. screening for diseases not known to occur in Australia, such as mad cow disease), ongoing disease reporting for National Animal Health Information System, and other animal health biosecurity programs (e.g.

lice affected sheep).

Data types Spreadsheets and reports

Organisation/DEWNR business area that

sponsors/holds/manages the data

PIRSA, Biosecurity SA

Date range Date: 1 January 2001. Last update: 30 June 2016

Study area South Australia

Data format Excel file and PDF reports

Data distribution rules Licensed under Creative Commons Attribution 4.0 International License.

Is the dataset source data (raw), value-add data

(analysed/summarised) or final indicator/score data?

Value add

Photo credit details:

Title: N/A Owner: DEWNR

Scientific literature referred to in the report:

Animal Health Australia, National Animal Health Information System (2016) Live NAHIS Reports.

Animal Health Australia (2016). Animal Health in Australia 2015, Animal Health Australia, Canberra, Australia.

Government of South Australia (1997) Livestock Act (Version 22.8.2013). South Australia. Adelaide.

Government of South Australia (2016) Food ScoreCard 2015-16. South Australia, Adelaide.

Levot, G. (2012) Unstable pyrethroid resistance in sheep body lice Bovicola ovis (Schrank), (Phthiraptera: Trichodectidae) and its implications for lice control on sheep. Veterinary Parasitology. 185(2-4):274-8. doi: 10.1016/j.vetpar.2011.09.036.