PRRSV transmission via boar semen
Monitoring protocols in boar studs are often insufficient to timely detect an infection.
Page 7 of articles about AI - artificial insemination
The battle of the sexes starts in the oviduct: modulation of oviductal transcriptome by X and Y-bearing spermatozoa
Data suggest that the oviduct functions as a biological sensor that screens the spermatozoon, and then responds by modifying the oviductal environment.
Swine artificial insemination: which technique to use and how many sperm per dose?
We should be cautious when setting the number of sperm per insemination dose, so the urge to reduce it does not make us use a number that is under the fertility threshold. Something that may be productive and/or profitable for a certain farm may not be so for another farm.
Supplementing cryopreservation media with reduced glutathione increases fertility of sows
Supplementing freezing media with 2 mm GSH greatly improves boar sperm cryopreservation technology, as it significantly improves the fertilizing ability of frozen-thawed spermatozoa.
Humoral response and colostral antibody transfer following 'one-dose' pre-mating vaccination of sows against porcine circovirus type-2
One-dose vaccination of sows against PCV2 induces colostral antibody transfer.
Clinical case: High percentage of returns-to-oestrus and of sows negative to the pregnancy ultrasound testing
There is an unusual increase of the returns-to-oestrus at 31-39 days. The majority are due to sows previously negative to the pregnancy ultrasound testing, and the returns-to-oestrus happened before 42 days.
Reproduction in gilts inseminated with PCV2-spiked semen. Protection by gilt vaccination with a sow PCV2 vaccine
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.
Use of the production planning chart to schedule the sow replacements
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.
Simplified freezing of boar semen: possible?
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.
Coloured pegs for the identification of the number of returns to oestrus of the sows
The goal is to identify the number of returns to oestrus of the sows quickly and at a glance using coloured pegs.
Using ear tags for controlling heats in the quarantine area
A very simple system for monitoring the heats of replacement gilts that consists of putting them ear tags at each of the two heats during the quarantine period.
AI with thick rubber bands
The goal is to inseminate quickly the sows after the first stimulus by the boar, but keeping the stimulation.
Ireland: PRRS outbreak
The country’s largest producer of pig semen is investigating how blue ear disease has entered its boar stud.
Danish pig meat exports declined during 2012
With pig slaughtering declining by over 1m head during 2012 (from 20.4m to 18.9m), it was no surprise to see a decline in exports of Danish pig meat over the year.