Page 10 of articles about genetics-reproduction in Articles

The weaning-to-service interval is a short but vital period regarding the productivity of the sow.

PCV2 vaccination of the gilts prior to insemination with PCV2 spiked-semen showed a clear decrease of viral load in the gilts as well as a much lower viral excretion that were compatible with foetus protection.

Does the complexity and expense of genomics mean that it will only be available to the major global pig breeding companies in the future? If the price of genotyping continues to reduce, it may be possible for medium and smaller size breeding companies to share funding and identify desired genotypes.

Knowing how to make the most of space in our farrowing rooms is a key point, not only when using foster sows, but also for increasing the age at weaning. The farrowing pen is the most expensive pen at the farm, and we must obtain the maximum possible efficiency out of it.

Which factors affect the WTSI? Among the factors with a biggest influence we have: inadequate intake during lactation, season of the year, and length of the lactation.

One of the greatest long-term potentials for genomic selection is to identify specific genes or genomic regions with a significant impact on pig health and to aid selection for disease resistance and/or disease tolerance.

The goal of this trick is to create a register of the coming into heat of the gilts that can be interpreted quickly and easily, and to control the day of the beginning of the treatment with altrenogest when we wish to delay their mating/service.

Novel cryopreservation methods and containers are designed to increase semen cryosurvival without disturbing production of conventional liquid semen doses. This provides opportunities for gene banking and preserved fertility when inseminated deep intra uterine, alongside undisturbed commercial AI-dose production.

The goal is to identify the number of returns to oestrus of the sows quickly and at a glance using coloured pegs.

We achieved it combining the use of two ear tags per sow together with their strategic location in order to avoid losses due to biting.

The key benefits from the use of DNA information are a greater overall genetic progress, improved selection for ‘difficult’ traits such as piglet survival and ...

PCV2 can be shed into semen by infected boars and research suggests that the virus can then be transmitted to gilts and sows by AI causing reproductive failure but there is no evidence that PCV2 in semen has effects on various characteristics of sperm cells.

Teams from 54 research groups, led by the Universities of Edinburgh (UK), Illinois (USA), Uppsala (Sweden) and Wageningen (Netherlands) have sequenced the entire genome of the pig.

As of the 3rd-4th day of lactation it is not recommendable anymore to replace small piglets and piglets with poor a growth rate for good piglets, because it is probable that the teat that has to be used has already dried off due to the scarce stimulation received for several consecutive days.

The author considers which is the ideal day for the mating and sets out the improvements in the results obtained when weaning on Monday.

How to make that the sows start their lactation with the maximum number of viable piglets.