Efficacy of the anti-GnRF immunization closer to slaughter
The secondary immunization can be moved closer to slaughter, while still limiting the incidence of boar taint.
Page 2 of articles about hormone
Training the sows with fruit juice for the intake of hormonal treatments
Apple juice is the favourite kind of juice for the sows during the training sessions.
Effects of altrenogest treatments before and after weaning on follicular development, farrowing rate, and litter size in sows
The different altrenogest treatments before weaning did not prevent the growth of follicles before weaning and similarly affected subsequent follicle development and fertility.
European Union: new MRLs for altrenogest
In the specific case of swine these MRLs are set at the 4 µg/kg for skin and fat and 2 µg/kg for liver.
Weaning on Friday and using altrenogest to avoid weekend farrowings; is it possible?
What if we were to wean on Friday and were able to block farrowings for 2 days? The bulk of farrowings would be concentrated on Monday.
Hormone management V: Using altrenogest to restore the metabolic state of weaned sows
When gilts were mated at a little more than 100 kg, productivity at 2nd parity had a huge decline and the sow was never able to reach their maximum potential.
Replacement planning and altrenogest management using spreadsheets
In the last chapter on hormone management we looked at the advantages of “a la carte” altrenogest treatment as opposed to the 18 day treatment used to synchronize gilts.
Easily fermentable carbohydrates reduce skatole formation in the distal intestine of entire male pigs
Chicory inulin and raw potato starch as ingredients to reduce the boar taint of meat from intact male pigs.
Clinical case: Altrenogest for the prevention of premature farrowings
The farm, with an elevated number of animals, had been experiencing for several days an increased number of births in gestation on the weekend before moving the sows to the farrowing pens. Mortality in these births was 100%.
Farrowing induction IV: Guidelines
In this chapter we will take a look at some other aspects of farrowing induction...
Luteinizing hormone secretion as influenced by age and estradiol in the prepubertal gilt
The aim of this study was to determine if there is an age related reduction in the sensitivity of the negative feedback action of 17β-estradiol (estradiol) on luteinizing hormone (LH) secretion in the prepubertal gilt.
Mating guidelines (III)
In the last chapter we examined mating guidelines that came rather close to being ideal, given that they achieve the following objectives: At least one mating should be adjusted to meet the ideal time and achieve the first objective with the least number of matings.
Mating guidelines (I)
As mentioned in the previous chapter, theoretically, the ideal mating time is around 10-12 hours before ovulation.
Organization of Replacements VI
Adjustment of replacement on farms working on 3-week batch system.
Farrowing programming III
Next we will consider some aspects that can be taken into account in order to adjust the day to induce farrowing.
Organization of replacements V
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?