Effects of L-proline during early-pregnancy and the sow parity on the birth-weight of piglets
L-proline supplementation during early-pregnancy improves litter size and birth weight in sows with negative energy balance.
Page 2 of articles about prolificacy
Are all non-viable piglets, really not viable?
There are casualties in the farrowing unit due to poor colostrum intake but, how many are there really? Are they just being classified as non-viable piglets?
Genome-wide association study for sow lifetime productivity related traits in a Landrace purebred population
A genome-wide association study was performed to identify quantitative trait loci for SLP-related traits. A total of five genome-wide suggestive significant single nucleotide polymorphisms were identified.
Arginine and amino acids supplementation in gestating gilts
Arginine and other amino supplementation in gestating gilts improve farrowing and litter performance in low prolificity sows (≤14 total piglets born).
How to control piglets during split nursing
The disadvantage of some boxes is that some piglets are too big and lively and jump off easily.
Clinical case: Diffuse reproductive problems in high health conditions
The owner contacted us because he has seen a reduction in performance in recent months, although no decline has been identified in any particular parameter. He says that, overall, “the sows are doing worse".
How efficient are the current hyper-prolific lactating sows? (1/2)
The study described here was designed to determine if the body tissue mobilization during lactation imposed by feed restriction could affect litter size and sow performance in the subsequent lactation.
The ideal farrowing facilities: number of crates, room size, type of crates... (1/2)
Joan Wennberg discusses the ideal farrowing facilities with Heraclio Corchón and Javier Lorente. They do not always agree, which makes reading this document even more interesting.
Factors for improving reproductive performance of sows and herd productivity in commercial breeding herds
We review critical factors associated with reproductive performance of female breeding pigs, their lifetime performance and herd productivity in commercial herds. The factors include both sow-level and herd-level factors.
Catering for hyperprolificacy
Hyperprolific sows often do not perform as well in Asia as they do elsewhere in the world and this one day conference, Performance2017, was convened to try to find why this was the case.
Hyperprolific? Yes, but not so much
Sows with more than 16 piglets Total Born (TB) per litter have twice as many stillbirths (SB) as those with 13 to 16 TB litters, and three times more SB than sows farrowing litters smaller than 13 TB.
Using first and second parity number born alive information to estimate later reproductive performance in sows
Early parity number born alive classification effectively predicts later parity performance. Sows classified as high in both parity one and in parity two had larger litters in later parities.
Relationships between ovulation rate and embryonic and placental characteristics in multiparous sows at 35 days of pregnancy
A high avulation rate results in an moderate increase in the number of vital embryos at day 35 of pregnancy, but compromises development in the surviving embryonic/placental units, suggesting that the future growth and survival of the embryos might be further compromised.
Management interventions for large litters: Economic assessment
Milk supplementation shows much higher growth rates in the fattening stage, so its implementation would be interesting to regain body condition in animals with low birth weight.
Foster sows, how to make them?
If we decide to use foster sows to wean the "extra" piglets farrowed by hyper-prolific sows, we must decide which system is best suited to our farm and our management conditions.
The use of oxytocin in liquid semen doses to reduce seasonal fluctuations in the reproductive performance of sows
On the basis of the presented results, it should be noted that the use of oxytocin into insemination doses improves the farrowing rate and other parameters of the reproductive performance of sows.