Nurse sows may represent a source of infection to the newly adopted pigs.
In a series of articles, swine reproduction and insemination specialist, Javier Gil Pascual, addresses the key aspects of oestrus stimulation and detection, and insemination.
Exposure methods: natural, intranasal, intra-tracheal, aerosol or vaccination.
Some routines are widely used on the daily work of pig farms and we can even think that there is some good logic behind them, but have they been scientifically tested?
Intranasal and intratracheal inoculation routes as well as aerosolization with foggers are discussed.
A newly produced PCR-based test can help assigning all known App serotypes, which can be used to select the most appropriate vaccine.
Depending on the virulence of the strain and the route of exposure, the disease may have four different presentations and early detection can be a challenge due to the lack of specific clinical signs.
Management of dead semen, data analysis, vaccinations,... These are some examples that we will deal with in the following 6 case studies.
The gut microbiome provides an alternative tool for control and prevention of diseases.
The morphological differences in the cervical wall and canal between multiparous and nulliparous sows require deep AI devices adapted to the characteristics of the nulliparous.
Occasionally, breeders end up using semen with a suboptimal fertilizing ability due to inadequate storage conditions.
We talk about weight and age at mating, stall adaptation, flushing, how to perform heat detection and insemination, the convenience or inconvenience of segregating the gilts
Joan Aparicio and Lluís Ferrer share their experience on how to prepare the replacement animals with Joan Wennberg.
Gilt acclimation was performed in 78% surveyed European farms; vaccination, alone or combined with natural exposure to infected animals, was the main used strategy.
Three factors must be taken into account when defining the viability of the elimination of M. hyopneumoniae on each farm: negative replacements, cost and return on investment, and risk of re-infection.
No single strategy will confer total protection. A well-orchestrated combination of various methods adjusted to a single production unit or system will be needed.
Frequently, diseases become established on a farm because we culture them.
Curiously, when I started to think about it, what I had considered as my number one mistake for most of my professional life became the fifth in importance.
Understanding water consumption and knowing the factors that can affect it, are important points in animal production and health.
This second part on AI stud management reviews the procedure for calculating sperm concentration and the elements that affect a correct assessment.
The impact of semen used for post-cervical AI is 2-3 times bigger than that used to produce cervical insemination doses; therefore, preparation of the doses should follow an even stricter control program.