Page 9 of articles about lactation
Alpha-lipoic acid on antioxidative ability and performance of sows and nursing piglets
The use of crystalline amino acids in lactating sow diets
Effect of split weaning on sow ovulatory responses to injection of gonadotrophins during lactation

The consumption of milk without restrictions does not guarantee the production success of the piglet after its weaning
The piglets that suckle in the rear area of the udder start to eat feed before, and this would explain their better adaptation to the weaning.
Effects of feeding rapeseed meal during gestation and lactation on the performance of hyperprolific sows and their litters
Lysine to metabolizable energy ratio affects growth performance, blood metabolites and hormones of lactating sows
Effect of meal frequency on performance and behaviour of group‐housed gestating sows
Dietary fat supplementation on sow and litter performance in high ambient temperatures

Nurse sows
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.
Reducing pre-weaning mortality rates begins with sow management
Glutamine and glutamate supplementation raise milk glutamine concentrations in lactating gilts

Transfers of piglets until the 3rd-4th day after their birth (II)
How to make that the sows start their lactation with the maximum number of viable piglets.

Transfers of piglets until the 3rd-4th day after their birth
When there are not enough teats, the strongest piglet always occupies the place of the weak one, that is left without milk to suckle.
Diet deprivation and over-allowance during prepuberty on mammary gland development and lactation performance of sows

I'm missing weaned piglets/sow: Why?
Normally, when we ask a farmer which is their average number of weaned piglets per sow they normally know this parameter, because its calculation is easy, nevertheless...