(a) A cattle farmer in a semi-arid area needs to build a kraal (enclosure) for 30 beef cattle. (i) State two factors the farmer should consider when choosin...

(a)(i) Two factors to consider when choosing the site for a kraal [2]:

1. Good drainage / slightly elevated ground to prevent waterlogging. Standing water turns the kraal into mud, promotes hoof diseases and makes handling difficult. [1]
2. Proximity to a water source so cattle have easy access to drinking water without being driven long distances daily. [1]

Also acceptable: shelter from strong prevailing winds; accessible by road for transport; away from residential areas to reduce odour nuisance.

(a)(ii) Two materials commonly used for kraal fences in rural areas [2]:

1. Wooden poles / timber [1]
2. Thorn bush / live thorn hedge [1]

Also acceptable: barbed wire; stone/rock; metal pipes/rails.

(b) Three features of a cattle crush (race) for safe handling [3]:

1. Narrow width (approximately 0.7 m) so that cattle cannot turn around. This forces them to move forward in single file. [1]
2. High, solid lower sides (at least 1.5 m tall). Solid sides prevent cattle from seeing out, which keeps them calmer and less likely to attempt to jump. [1]
3. Non-slip floor surface to prevent injuries. Cattle that slip become panicked and dangerous to themselves and the handler. [1]

Also acceptable: a squeeze mechanism or head clamp at the end for restraining individual animals for treatment.

(c) Why a loading ramp is important [2]:

A loading ramp allows cattle to walk up a gradual incline to the height of a truck bed for transport. [1] Without a ramp, cattle would need to be lifted or forced onto the vehicle, which causes injury, stress and bruising that downgrades meat quality and risks broken limbs. [1]

(d)(i) How a plunge dipping tank works [3]:

1. Cattle are driven through a narrow race into a deep concrete tank filled with acaricide (tick-killing chemical) solution at the correct concentration. [1]
2. The tank is deep enough that the animals are fully submerged as they swim through, ensuring every part of the body - including ears, tail base and underbelly where ticks hide - contacts the chemical. [1]
3. At the far end, cattle climb out on a draining ramp. The ramp slopes back toward the tank so that excess solution drips off the animal and flows back in, minimising chemical waste. [1]

(d)(ii) Two safety precautions when using a dipping tank [2]:

1. Wear protective gloves, overalls and boots when handling the acaricide concentrate. These chemicals are toxic and can be absorbed through the skin. [1]
2. Ensure the correct concentration of acaricide by following the manufacturer's dilution instructions. Too weak a solution fails to kill ticks; too strong a solution can poison the cattle. [1]

Also acceptable: do not allow animals to drink the dipping solution; keep children and unauthorised persons away from the dipping area.