The cortisol response to ACTH in pigs, heritability and influence of corticosteroid-binding globulin
The results are valuable for the genetic selection of animals to explore the consequences on production and robustness traits.
Page 34 of articles about genetics-reproduction
Iron deficiency and anemia in piglets and the effect of iron status at weaning on post-weaning performance
Consumption of nursery starter feeds containing high concentrations of ZnO is associated with post-weaning anemia.
Measures to reduce neonatal mortality: management, genetics and new housing for lactating sows
Neonatal mortality does not only depend on the design of the farrowing crate, but also on genetic and management factors, as well as litter size, especially with the increased use of hyper-prolific dam lines.
Reference values for immunocrit ratios to assess maternal antibody uptake in 1-day-old piglets
The IR method ascertains whether piglets are receiving adequate maternal antibodies until their own immune systems are developed.
Effect of radiant heat at the birth site in farrowing crates on hypothermia and behaviour in neonatal piglets
Radiant heating behind the sows reduced hypothermia in new-born piglets and indicate that providing heat during the first half hour after birth is important.
Comparison of specimens for detection of PRRSv infection in boar studs
These results showed that the highest assurance of providing PRRSV-negative semen to sow farms should be based on rRT-PCR testing of serum collected at the time of semen collection.
Canada gains market access for live breeding cattle and swine to Georgia
Canadian cattle and swine breeders can immediately begin exporting to this market. Georgian breeders also benefit by gaining access to Canada’s world-class animal genetics.
Current state of post-cervical insemination in multiparous, primiparous and nulliparous sows
It is necessary to find alternatives to definitely implement this technique in primiparous sows and start its use in gilts.
Analysis of hygienic critical control points in boar semen production
The present study emphasizes the need for both training of the laboratory staff in monitoring HCCP in routine semen production and audits in such AI centers for the external control of hygiene parameters.
The birthing process of a piglet
Scott Phillips, a pig farmer from Missouri, shows how he pays individual attention to the mother pigs as they give birth to their piglets.
Distinguishing sows with different genetics using cards and ear tags with different colours
Usual standard on many farms to identify a sow with different genetics quickly.
Porcine semen as a vector for transmission of viral pathogens
Prevention of viral semen contamination should be the primary focus because it is easier to prevent contamination than to eliminate viruses once present in semen.
Heritability
Traits of high or moderate heritability are easily improved by testing and selection. However, for traits of low heritability, improvements come from exploiting heterosis and by the use of BLUP.
Pigs that are resistant to PRRSv developed at University of Missouri
Porcine Reproductive and Respiratory Syndrome (PRRS) virus was first detected in the U.S. in 1987. Pigs that contract the disease have extreme difficulty reproducing, don’t gain weight and have a high mortality rate. The disease costs North American farmers more than $660 million annually. Now, a team of researchers from the University of Missouri, Kansas State University, and Genus plc have bred pigs that are not harmed by the disease.
Heterosis (hybrid vigour) and inbreeding
Benefits and risks of heterosis and inbreeding in pig production.
Influences on semen traits used for selection of young AI boars
A minimum age is proposed for young boars to qualify for selection, or alternatively, age-related semen quality thresholds in young boars should be established.