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QUESTION 16 Identify the organisms that can cause a metazoal disease. (A) barber’s pole worm buffalo flies and cattle ticks (B) tapeworms liver flukes and clostridial bacteria (C) clostridial bacteria roundworms and lice (D) _ stickfast fleas cattle ticks and ringworm
QUESTION 23 (6 marks) Foot and mouth disease (FMD) is a severe highly contagious disease of cloven-hoofed animals such as cattle sheep and pigs. The most common signs of FMD are fluid-filled blisters and ulcers in the mouth and on the feet lameness excessive salivation and loss of appetite. There is no specific treatment for FMD. If an outbreak were to occur in Australia movement control measures would need to be initiated. All infected animals would need to be destroyed. Draw three conclusions about the impact of an FMD outbreak on Australian livestock industries. Provide reasoning to support each of your conclusions.
QUESTION 12 Dairy goat production could be positively influenced by (A) (B) (C) (D) breeding with an F1 generation male. vaccinating annually for clostridial diseases. grazing on a lucerne pasture for an extended time. moving stock into a paddock that is currently being grazed by sheep.
QUESTION 24 (6 marks) a) Identify one significant animal disease that affects production. [1 mark] b) Identify two health effects and two economic effects of the disease identified in Question 24a). [2 marks] c) Use an example to explain a biological method of pest control and the conditions that should be met before it is used to control an animal pest. [3 marks]
QUESTION 28 (6 marks) A dairy farm in the tick-free zone of Queensland has been quarantined due to a cattle tick infestation. The producer is required to treat their animals over a two-year period to eradicate the infestation and then continue to treat their animals to prevent re-infestation. Discuss an effective strategy for a two-year period considering the goals and implications of using chemicals in a dairy enterprise.
QUESTION 1 The diagram shows the life cycle of the barber’s pole worm in sheep. A strategy to break the life cycle of a worm-infected paddock is to rotate sheep with horses. Adult worms lay If weather is suitable eggs that pass onto | | | larvae hatch pasture in dung | Larvae migrate from dung to pasture C@ S Larvae develop into adults MM Z ZG in about three weeks a ahs =—_~ Infective larvae are eaten by sheep Ma_ How many weeks between sheep rotations would be the most suitable? (A) one (B) two (C) three (D) four
QUESTION 9 The graph shows a change in the supply and demand of apples. Price Quantity Which statement best describes the change in the supply (S) demand (D) and price of apples? (A) (B) (C) (D) A marketing campaign increased the demand for apples. Production losses in the major growing areas decreased supply. Increasing production costs reduced the supply for a given price. New technology reduced the cost for farmers and increased supply.
QUESTION 15 A characteristic of an unsustainable biological control method is (A) anarrow host range for the biological control organism. (B) an increase in the population of the competing species. (C) the disappearance of the biological control organism. (D) areduction in the population of the targeted pest.
QUESTION 1 (4 marks) White spot disease (WSD) is caused by a highly contagious viral infection that affects crustaceans such as prawns lobsters and crabs. The virus that causes WSD poses no risk to food safety or human health but when found in high production areas like prawn farms it causes rapid animal death. WSD is spread by the movement of infected animals or contaminated water. Birds that feed on infected animals and move to another location can readily spread the disease. Fin fish do not carry the disease and are not affected by it. WSD was first identified in prawn farms and following a 4-year extensive eradication and monitoring program was no longer detected in the local environment. Explain two strategies that could be implemented to reduce the incidence of WSD if it is detected again.
QUESTION 7 (7 marks) African swine fever (ASF) has had an impact on animal production in countries where it is prevalent. In 2019 10% of the total pig population in China an estimated 44 million pigs died of ASF. The first graph shows pork consumption per person in various countries and the second graph shows current and projected levels of pork consumption per person compared to other animal protein sources in China. Consumption per person (kg) World China China average (mainland) (Hong Kong) 120 F) 3 ‘e 100 a oy au 2 80 (a0) & = 60 of a roy = 40 a 5 he 20 (qe) cD) => (0) 2015 2020 2025 Year Key oq Lamb |_| Beef BE Poultry Fish |_| Pork a) Draw conclusions about the effect of ASF on protein availability in China. Justify your conclusions. b) Discuss three impacts that ASF would have on the pig industry in Australia if it was identified in local piggeries.
QUESTION 16 Which management strategy would control pests and diseases in an extensive animal industry? (A) (B) (C) (D) visual inspections of poultry sheds removing animal waste from a cattle feedlot selection of short-coated cattle for animal production maintenance of pastures in free-range egg production
QUESTION 23 (8 marks) The Varroa mite is a honeybee parasite that has a major impact on overseas honey and related enterprises killing large populations of bees and weakening colonies. If uncontrolled Varroa mite infestation in honeybee colonies severely impacts honey production but can also affect a wide range of pollination-reliant crops. a) b) Cc) d) Identify two management strategies that beekeepers or biosecurity officers could implement to restrict the movement of Varroa mite outside of an infested area. [2 marks] Identify another pest associated with an agricultural animal of regional importance and explain its effect on this animal. [2 marks] Describe two stages of the life cycle of the pest from Question 23b). [2 marks] Identify the point in the life cycle of the pest from Question 23b) where it is most vulnerable and explain why. [2 marks]
QUESTION 27 (3 marks) Aphids are a common pest in cereal crops. The table identifies different control methods. Control method Monitoring aphid population Crop rotation Preserving predators e.g. ladybirds Introducing enemies e.g. parasitic wasps Use of insecticides Use of seed dressings a) Identify which control methods are biological controls. [1 mark] b) Explain two advantages of using biological controls. [2 marks]
QUESTION 10 (4 marks) Mad cow disease (BSE) is an exotic disease to Australia. It is spread by cattle eating animal products containing the disease and originated through cattle being supplemented with protein from meat and bonemeal. In 1996 BSE was identified as potentially passing from animals to humans in Great Britain. The graph shows beef exports from Great Britain from 1993 to 2001. 400 350 ‘sol 250 200 150 100 0 Ld [| [| [| [ 1993 1994 1995 1996 1997 1998 1999 2000 2001 Year Mass (x 1000 tonnes) a) Determine how introducing BSE to Australia could affect a cattle production system. [2 marks] b) Identify two strategies Australia currently uses that reduce the risk or effect of BSE being introduced. [2 marks]
QUESTION 16 The labels below provide information about Products A and B. Product A Product B For active immunisation against pulpy kidney For active immunisation against pulpy kidney black disease tetanus blackleg vibriosis and lamb dysentery tetanus and vibriosis in pigs. malignant oedema in sheep goats and cattle. For active immunisation against pulpy kidney For active immunisation against tetanus and haemorrhagic enterotoxaemia malignant oedema haemorrhagic enterotoxaemia in horses. blackleg black disease redwater and tetanus in ruminant animals. Compare the information about diseases controlled by Product A and Product B. A disease that is covered by both products for ruminants is (A) haemorrhagic enterotoxaemia. (B) malignant oedema. (C) dysentery. (D) vibriosis.
QUESTION 17 An exotic disease is (A) an organism that injures irritates or damages livestock livestock products or plant products and that can adversely affect production. (B) adisorder of structure or function in an animal or plant that is not simply a direct result of physical injury. (C) ananimal disorder that by law must be reported to government authorities. (D) an infectious disease that normally does not occur in the region.
QUESTION 29 (3 marks) A beef producer in tropical Queensland wishes to implement an integrated management program to control buffalo flies in their herd. Dung beetles reduce buffalo fly populations by removing or spreading dung so flies cannot breed in it. Dung beetles are most active in hot humid weather (i.e. wet season October—March) which coincides with the period when flies are most active. To help increase the dung beetle population farmers must consider using chemicals that are known to have little or no effect on the beetles and avoid using chemicals at peak dung beetle breeding times. Three chemical products available for buffalo fly control are Product A Product B and Product C. Product A Product B Product C Potential activity period of the chemical after a 21 days 14-18 days up to 21 days single treatment Likelihood of resistance in flies to the chemical Likely activity period of the chemical where around 10 days around 7 days 7-10 days there is resistance in flies Use data from the table to decide which product a producer should use at the beginning of the wet season. Give reasons for your decision.
QUESTION 10 (2 marks) Select a local or regional pest and describe an impact that the pest has on the associated production animal. Selected pest: Impact:
QUESTION 27 (4 marks) A trial was conducted to determine the efficacy of treatments for the Varroa mite in honey bees. Four treatments were used: the control fungus Metarhizium anisopliae and pesticides (Product A and Product B). The table shows the mean values for each treatment. Treatment WPA AIUom CMCC” Mean values for mites Honey of adult bees (“%) remaining in the hive | extracted (kg) — 1552068 | 1934038 5679 859 1.28 + 0.45 0.32 +.0.03 21.14 + 4.79 pO 0.87 40.01 0.02 + 0.01 0.71 +0.10 0.92 + 0.05 0.03 + 0.01 0.81 + 0.15 Use the table to draw a conclusion about the most effective treatment for the control of the Varroa mite in honey bees. Provide three pieces of evidence from the data to support your conclusion.
QUESTION 1 The table below gives pairs of descriptions for intensive and extensive industries. low levels of input/ha high levels of production/ha Il low initial capital costs per unit area IV smaller areas of production larger areas of production Which of the following describes the characteristics for intensive and extensive industries? (A) I Il Hl (B) LILIV (C) LILIV (D) I Ill IV
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