Page 21 of articles about management in Articles

Adjustment of replacement on farms working on 3-week batch system.

In the last chapter we examined the advantages of positioning crates facing inwards and outwards. Now we are going to explore two other options: Aisles both in front and behind the crates and crates on both sides of the aisle.

The most common problems are due to interference with maternal antibodies and coincidence of vaccination with a recirculation of PRRS: viremic animals.

Working with compound feeds allow to cover completely the animals' needs, taking full advantage of their use.

When designing farrowing rooms, sows can be placed in different ways: facing inwards, facing outwards, with aisles both in front and behind the crate, or on both sides of the aisle.

Next we will consider some aspects that can be taken into account in order to adjust the day to induce farrowing.

On many farms the introduction of gilts is not homogenous. However, the introduction of a similar number of gilts to each productive batch would be ideal. How can we do this?

The gestation period in the majority of sows is usually around 113 to 115 days. However, a percentage of sows can farrow normally up to 3 days before or after.

In order to try to control the environment, it is important: - Be able to evaluate it. - Be familiar with the needs of different types of animals. - Implement corrective measures to adapt to those needs.

Is the lighting in warehouses up to standard? Are the manipulable materials the right ones?

Another convenient option for controlling the replacement entry is to incorporate the information on the breeding chart.

At what age can we castrate piglets? Is it possible to castrate without a general anesthetic? The new test on castration tries to resolve these doubts.

The new test in the welfare section is dedicated to conditions during finishing period.

Nutrition is considered to be a clear factor that increases the risk of ulcers appearing.

In the previous chapter we began to describe several systems for recording clearly and quickly the dates that gilts come into heat and for planning gilt service.

The pig’s reproductive cycle lasts for 20 weeks, with weaning at 21 days: 16,5 gestation period + 3 lactating + average time on heat. Supposing that the sows wean 10 piglets, we can then come to the following conclusion: it takes two weeks to produce a piglet.