Photo AI
Discuss the role of scanning in sheep production - Leaving Cert Agricultural Science - Question Question 1 - 2012
Question Question 1
Discuss the role of scanning in sheep production. Explain the term terminal sire as it applies in sheep breeding. Suggest two breeds that could be used as terminal... show full transcript
Worked Solution & Example Answer:Discuss the role of scanning in sheep production - Leaving Cert Agricultural Science - Question Question 1 - 2012
Step 1
Discuss the role of scanning in sheep production.
Answer
Scanning plays a crucial role in sheep production by enabling farmers to determine whether ewes are pregnant and the number of lambs they carry. This information is vital for effective management and helps in decision-making regarding feeding regimes tailored to the nutritional needs of pregnant ewes. Scanning also aids in identifying barren ewes, who can be culled to improve flock efficiency. Consequently, this practice enhances overall productivity by ensuring that resources are allocated optimally.
Step 2
Explain the term terminal sire as it applies in sheep breeding.
Answer
A terminal sire is a ram specifically bred to produce lambs that are intended primarily for slaughter. These rams are chosen for their high growth rates and the quality of their carcass, particularly in terms of meat quality and conformation. Therefore, the role of a terminal sire is to enhance the meat production traits in the offspring which are grown for market.
Step 4
Give a reason for each of your choices in part (ii).
Answer
-
Suffolk: Known for excellent carcass quality and conformation, as well as fast growth rates, making them ideal for meat production.
-
Texel: Recognized for producing lean meat with superior carcass quality, making them another outstanding choice for terminal sires.
Step 5
Compare flushing with steaming-up as feeding strategies in sheep production.
Answer
Flushing involves placing ewes in a low plane of nutrition followed by a high plane of nutrition prior to mating. This practice increases ovulation rates, resulting in better conception rates and aiding in the attachment of embryos, which tends to yield larger litter sizes and more regular heats.
On the other hand, steaming-up refers to the increase in concentrate feed given to ewes during the last six weeks of pregnancy. This strategy usually results in increased lamb survival rates and better lamb condition post-birth. The goal is to improve both the quantity and quality of lambs produced, ultimately enhancing overall flock performance.