The relationship of plasma urea nitrogen with growth traits and age at first estrus in gilts
PUN can be used to select gilts with increased efficiency of nutrient utilization without negatively impacting pubertal development.
Page 41 of articles about genetics-reproduction
Selection for increased number of piglets at day five after farrowing has increased litter size and reduced piglet mortality
Selection for litter size at day five after farrowing (LS5) was introduced in 2004 in order to increase number of piglets weaned and reduce piglet mortality in Danish Landrace and Yorkshire.
Danish pig meat exports declined during 2012
With pig slaughtering declining by over 1m head during 2012 (from 20.4m to 18.9m), it was no surprise to see a decline in exports of Danish pig meat over the year.
Effect of dietary selenium on boar sperm quality
Supplementing a basal diet with organic or inorganic selenium did not affect semen quantity or sperm quality in fresh ejaculates.
Colombia will be allowed to export pigs to Venezuela for reproductive purposes
For the exportation of pigs for reproductive purposes, the protocol signed by these two countries establishes that the animals must come from farms registered with the ICA.
United States: New Jersey will prohibit the confinement of breeding pigs in crates
New Jersey is one step closer to becoming the tenth state to outlaw the confinement of breeding pigs in gestation crates.
n-3 fatty acid supplementation in sows
Feeding n-3 fatty acids to gilts may improve litter growth, but does not affect subsequent reproductive performance.
Thompson’s tip: Provide cover for summer infertility
Many pig producers will be taking in batches of replacement gilts in split weights.
United States: pork producers reaffirm industry support for producer choice on sow housing
At the National Pork Industry Forum, pork producers approved a resolution reaffirming the industry's position that producers should be able to select a sow housing system.
Springer published the book entitled "Boar Reproduction. Fundamentals and New Biotechnological Trends"
Springer, one of the most prestigious international editors today published the book entitled "Boar Reproduction. Fundamentals and New Biotechnological Trends"
Effect of split weaning on sow ovulatory responses to injection of gonadotrophins during lactation
More split-weaned than control sows had elevated serum progesterone 2 days post weaning (47.6% versus 9.5%).
Animal-related factors associated with piglet mortality in a bedded, group-farrowing system
Farrowing behavior, cross-fostering, birth weight and gender of piglets were investigated.
PCV2: Possible transmission to sows through artificial insemination and effects on quality of boar semen
PCV2 can be shed into semen by infected boars and research suggests that the virus can then be transmitted to gilts and sows by AI causing reproductive failure but there is no evidence that PCV2 in semen has effects on various characteristics of sperm cells.
Effect of distributing primary and secondary antioxidants to the sow during the weaning‐estrus interval
The supply of the antioxidants to the sow during the weaning‐estrus interval significantly reduced both the percentage of immature piglets per litter and the within‐litter variation of birth weights.
First Chinese litters allow further expansion of JSR’s global breeding programme
JSR’s global breeding programme has seen its first litters born in China, signalling the spread of the company’s genetics into the most important market in the world.
United Kingdom: wean more pigs to be more profitable
The aim is to help every producer move towards an extra three pigs per sow per year weaned.