Essential Guides on Swine Health and Production. Artificial Insemination and Hormone Management in the Sow
This guide is a visual and practical explanation of what should happen from the moment when you receive the semen from the artificial insemination centre, until the moment when the sow is inseminated, with a focus on the use of refrigerated semen: conservation and management of seminal doses, oestrus detection, identification of the best time for insemination, insemination methods, and hormonal control of oestrus and ovulation.
Autor: María Victoria Falceto Recio
| Nakladatel | Plot |
|---|---|
| ISBN | 9788417225803 |
| Vydání | 2018 |
| Vazba | brožovaná |
| Počet stran | 88 |
1. AI in pigs: current approach
2. Oestrus detection in the sow
Oestrous cycle
Signs of oestrus
Detection of oestrus
Choice of staff and boar
Frequency of detection of oestrus
Sows requiring detection of oestrus
Methods for oestrus detection
Consequences of poor oestrus detection
3. Timing of artificial insemination
When to inseminate
Insemination based on estimating the moment of ovulation
Duration of oestrus
Measuring luteinising hormone (LH)
Temperature of the vulva
Vaginal cytology
Electrical resistance of the vaginal mucus
Ultrasound examination of the ovary
Fixed-time artificial insemination
Using hormones to induce and synchronise ovulation
Use of encapsulated semen
When to stop inseminating
4. Methodology of artificial insemination
Preparation of the semen
Microscopic evaluation of the semen before artificial insemination
Management of semen doses on the farm
Preparing the equipment required for artificial insemination
Catheters
Common features of all AI techniques
Hygiene during AI
Introducing the catheter into the sow’s vagina
Intracervical insemination
Catheters for IC-AI
IC-AI method
Semen dose characteristics for IC-AI
Duration of intracervical insemination
Backflow from the vulva
Stimulation of the sow during IC-AI
Postcervical intrauterine insemination
Catheters for PC-AI
PC-AI method
Semen dose characteristics for PC-AI
Advantages of PC-AI
Deep intrauterine insemination
Catheters for DIU–AI
DIU-AI method
Semen dose characteristics for DIU-AI
Advantages and disadvantages
Use of seminal additives during artificial insemination
5. Hormonal control of oestrus
Induction of oestrus
Differentiating between anoestrus and pseudoanoestrus
Hormones that stimulate the ovaries
Absence of oestrus after hormonal induction
Synchronising oestrus
Hormones for synchronisation of oestrus
Absence of oestrus after synchronisation
Duration of treatment
Other uses for altrenogest on the farm
Induction and synchronisation of ovulation
When to induce ovulation during the oestrous cycle
Hormones for induction of ovulation
Advantages of a single fixed-time insemination
References