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Explain the technique known as "flushing", which is used in sheep production - Leaving Cert Agricultural Science - Question b - 2006
Question b
Explain the technique known as "flushing", which is used in sheep production. Explain the advantages of each of the following in the management of a flock of sheep:... show full transcript
Worked Solution & Example Answer:Explain the technique known as "flushing", which is used in sheep production - Leaving Cert Agricultural Science - Question b - 2006
Step 1
Explain the technique known as "flushing", which is used in sheep production.
Answer
Flushing is a technique employed in sheep production to enhance reproductive performance. It involves providing ewes with a nutritious diet prior to breeding to increase body condition and ovulation rate. Typically, this practice is undertaken a month or so before mating, where ewes are placed on good pasture or high-stocking rate areas. The objective is to improve nutrition, thus increasing the number of eggs released. This results in better conception rates and greater chances of twins due to the higher ovulation rate.
Step 2
Explain the advantages of each of the following in the management of a flock of sheep: 1. Synchronized breeding
Answer
Synchronized breeding provides several benefits for the management of sheep. It results in a shorter mating period, which leads to a more concentrated lambing season. This reduces labor demands, as farmers can manage all ewes during a specific timeframe instead of spanning weeks or months. Additionally, it helps ensure that lambs are born around the same size, improving management and welfare outcomes.
Step 3
2. Breeding out of season
Answer
Breeding out of season allows for earlier lambing schedules, which can be advantageous for reaching markets, such as Easter, when prices may be higher. This technique also enables better use of resources, as it spreads out the labor requirements over the year rather than concentrating them in a single season.
Step 4
Describe the feeding of ewes during the final 6-8 weeks of pregnancy and give reasons for the changes in feeding regime.
Answer
During the final 6-8 weeks of pregnancy, the feeding of ewes should include a gradual increase in concentrates. This period is crucial as the majority of fetal growth occurs. It is important to provide adequate nutrition to support this growth. Typically, an increase of up to 0.5 kg/day or 0.7 kg/day for twins may be necessary. Additionally, pasture quality tends to decline, so supplementation is crucial to prevent issues such as twin lamb disease and ensure optimal milk production post-lambing.