Page 10 - Australian Pork Newspaper

Dr R. Dean Boyd - A.C. Dunkin Memorial Lecture: Innovation through research in the North American pig industry.
Australasian Pig Science Association (Inc)
APSA 2019
17TH BIENNIAL CONFERENCE
Hilton
Adelaide, Australia
17th - 20th November 2019
Mark these dates in your calendar
17th - 20th November 2019 The Australasian Pig Science Association
is pleased to announce that the 2019 APSA Biennial Conference will be held at the
Hilton
Adelaide, SA, Australia
from
17th to 20th November 2019.
Prof Mike Tokach - Review: Nutrient require- Prof Carol Bagnell - Review: Maternal pro- ments, with an emphasis on amino acid
gramming of development in the pig and the requirements, of the modern high-producing Dr Clay Lents - Review: Kisspeptin and lactocrine hypothesis. lactating sow. reproduction in the pig.
APSA welcomes invited speakers for 2019
REGISTRATION TYPE APSA Member
Non-Member
Student APSA Member
Full Registration Day Registration Full Registration Day Registration Full Registration
Early Bird
825.00
455.00 1025.00 555.00 380.00
Full
995.00
455.00 1325.00 555.00 380.00
Registrations Open Now
Registration Prices Early bird ends 1st September 2019
Association Conference, the APSA Committee is preparing to welcome 10 invited speakers from Australia and around the world to present their re- views and symposia on a range of engaging topics.
Dr R. Dean Boyd – A.C. Dunkin Memorial Lec- ture: Innovation through research in the North American pig industry.
Research is key to driv- ing innovation.
The North American pig industry has significantly benefitted from applying research innovation over the past decade.
While many of these in- novations were developed in North America, some have been adopted from abroad.
Dr Boyd is set to present the A.C Dunkin Memo- rial Lecture and will detail innovations con- sidered to be milestones for the North American pig industry.
Some of these include: the identification of a major gene for porcine reproductive and respira- tory syndrome virus; post- cervical insemination; advances in nutritional science to reduce seasonal infertility; as well as pre- cision nutrition advances and technological develop- ments to detect and iden- tify pathogens easily and cost effectively.
All these research dis- coveries are being inte- grated into practice and have contributed to im- proving pig production in North America.
Dr Boyd is the former technical leader for the Hanor Company and Tri- umph Foods group (2002- 2017).
His team managed the nutrition program for 90,000 sows and 2.45 mil- lion pigs.
He holds adjunct profes- sorships in animal nutri- tion at North Carolina State and Iowa State uni- versities.
Dr Boyd’s research has led to a better understand- ing of energy and amino acid nutrition, ingredient mitigation of disease stress on growth and the pro- found lifetime effects of low weaning age.
His team proved season- al infertility could be alle- viated by specific amounts of essential fatty acids.
Dr Boyd has published more than 200 scientific papers in scholarly jour- nals, book chapters and conference papers and in 2016 received the Animal Nutrition Research Award for distinguished contribu- tions.
Prof Carol Bagnell – Review: Maternal pro- gramming of develop- ment in the pig and the lactocrine hypothesis
epigenetic maternal effects define the developmental trajectory of progeny and, ultimately, offspring phe- notype.
Maternally provisioned environmental conditions and signals affect con- ceptus, feto-placental and postnatal development from the time of concep- tion until weaning.
Prof Bagnell’s review will focus on maternal lactocrine programming of postnatal reproductive tract development in pigs by way of mother’s milk – the ‘lactrocrine hypoth- esis’.
The importance of nurs- ing from birth on repro- ductive development and performance is empha- sised, with data on both short-term effects in the neonate and long-term ef- fects in adults.
These data support the lactocrine hypothesis and milk as a conduit for deliv- ery of maternally derived bioactive factors driving postnatal development.
Observations to date sug- gest lactocrine-dependent maternal effects program postnatal development of the porcine uterus, endo- metrial functionality and uterine capacity, and play a major role in the future fecundity of female off- spring.
Dr Bagnell is Professor of Reproductive Biology in the Department of Animal Sciences at Rutgers Uni- versity, New Jersey.
She has served as depart- ment chair and is currently Graduate Program Direc- tor in Endocrinology and Animal Biosciences.
Her studies, using the pig as a model, focus on im- proving our understanding of maternal programming of development by testing the lactocrine hypothesis. Prof Mike Tokach – Re- view: Nutrient require- ments, with an emphasis on amino acid require- ments, of the modern high-producing lactating sow
Sow productivity im- provements continue to increase the metabolic demands on the sow, es- pecially first-litter sows, during lactation.
Energy requirements in- crease by 60 percent and amino acid needs to in- crease by 150 percent dur- ing the peripartum period and as litter size has in- creased, research on peri- partum sows has focused on increasing birth weight, shortening farrowing du- ration to reduce stillbirths and improving colostrum composition and yield.
Prof Tokach’s review will focus on the changing nu- trient and energy require- ments of sows during this critical period, with a par- ticular focus on the supply
Visit the website for more details
www.apsa.asn.au
Page 10 – Australian Pork Newspaper, June 2019
WITH just five months Maternal effects on de- until the 17th Biennial velopment are profound. Australasian Pig Science Together, genetic and
of dietary amino acids (es- pecially lysine) to improve milk protein output and reduce muscle protein mo- bilisation.
Named among 50 peo- ple who have made the greatest impact in the US swine industry in the past 50 years, Prof Tokach is a swine nutrition researcher and extension specialist at Kansas State University.
He joined K-State in 1991, and in 2013 earned the title of university dis- tinguished professor.
He is the author of more than 310 articles in scien- tific journals, eight book chapters and more than 1000 extension and non- refereed articles.
Prof Tokach has received more than $18 million in research grants and gifts, has been awarded seven patents for his research and given more than 300 invited lectures at national and international confer- ences.
Prof Tokach has also ad- vised and mentored over 100 advanced-degree stu- dents and visiting profes- sors since joining the uni- versity.
Dr Clay Lents – Review: Kisspeptin and repro- duction in the pig
Activation of the hypo- thalamic-pituitary axis is critical for initiation and maintenance of reproduc- tive cycles in pigs and is influenced by a number of factors such as nutrition, metabolism and gonadal steroids.
Kisspeptin in a neuro- peptide that is expressed in discrete regions of the porcine hypothalamus and is positioned to mediate the action of many of these factors.
Expression of kisspeptin in the pig hypothalamus does not appear to be regu- lated by gonadal steroids in the same way as other species.
It is unclear if kisspeptin is mediating nutritional or metabolic effects on gon- adotropin secretion in pigs.
There appears to be little genetic diversity in kiss- peptin or its receptor that is useful for improving re- production in swine.
Both peripheral and cen- tral injection of kisspeptin strongly stimulates secre- tion of gonadotropin hor- mones, LH and FSH in gilts.
Similarly, synthetic ana- logues have been devel- oped and show potential promise as tools to manage reproductive cycles in gilts and sows.
Dr Lents’ review of the literature nonetheless re- veals that research on kiss- peptin and its function in controlling reproduction in pigs has lagged far behind that of other livestock spe- cies.
Dr Lents is a research physiologist for the USDA in the Reproduction Re-
search Unit at the US Meat Animal Research Center.
Dr Lents has a unique and diverse background ranging from neuroanat- omy to endocrinology, reproductive physiology, metabolism and transcrip- tomics.
His current research fo- cuses on integrating in- formation from both ap- plied and basic research to discover key mechanisms controlling growth and re- production, which is used to develop approaches to improve reproductive de- velopment, performance and lifetime productivity of gilts.
Dr Steve Little – Review: Water medication of growing pigs – sources of between-animal vari- ability in systemic expo- sure to antimicrobials
To manage health it is common for pigs to be medicated through their water.
However, this cannot be assumed to deliver an equal dose to each animal.
There is between-animal variability in systemic ex- posure to an antimicrobial, resulting in under-dosing or over-dosing.
Three sources of be- tween-animal variability are: (1) concentration of the antimicrobial product available at drinkers over time; (2) medicated wa- ter consumption patterns of individual pigs; and (3) pharmacokinetics (that is, bioavailability, volume of distribution and clear- ance).
Dr Little will provide some insight into factors that influence the expo- sure to an antimicrobial for consideration when de- signing and implementing antimicrobial programs that reduce under-dosing and over-dosing and there- fore achieve more clinical efficacy with less develop- ment of resistance.
Dr Little graduated with a Bachelor of Veterinary Science from The Univer- sity of Melbourne.
He has worked for 30 years in the commercial Australian stockfeed and animal production sec- tors in field and technical management roles and as a consultant.
Dr Little’s strong interest in (and frustration with) the uncertainties related to farm drinking water systems and mass-medica- tion of pigs through their drinking water to control and treat diseases has motivated him to return to the vet school at the University of Melbourne to undertake a PhD with support from the National Centre for Antimicrobial Stewardship.
Dr Kristy DiGiacomo – Review: Insect meal – a future source of protein feed for pigs?
Are insects the farm ani- mal of the future?
The Australian pork industry aims to develop production systems that efficiently use available resources (such as feed and energy) and limit the production of emissions (such as manure waste and greenhouse gases).
Invertebrates (insects in- cluding black soldier flies) are naturally consumed by monogastric and aquatic species, yet the large-scale production of insects for feed (or food) is yet to be exploited.
Insects are low GHG producers and have low land and water require- ments.
The large-scale produc- tion of insects can contrib- ute to a circular economy whereby food and feed waste (and potentially ma- nure) is reduced, or ideally eliminated via bioconver- sion.
While the concept of farm-scale production of insects as domestic animal feed has been explored for decades, significant pro- duction and replacement of traditional protein sources has yet to be achieved.
Dr DiGiacomo’s review will focus on the potential role of insect-derived pro- tein as a feed source for the Australian pig production industry.
Dr DiGiacomo graduat- ed with a Bachelor of Ani- mal Science and Manage- ment (Honours) from the University of Melbourne and went on to receive her PhD from the University of Melbourne examining the physiological and met- abolic responses to heat and dietary betaine in ru- minants, under the guid- ance of Prof Frank Dun- shea and Prof Brian Leury.
Dr DiGiacomo is a lec- turer in production animal nutrition and physiology at the University of Mel- bourne and is a veski sus- tainable agriculture fellow.
Her research involves a variety of species and focuses on livestock nu- trition, physiology and adaptation to the external environment.
Prof Robyn Warner – Review: The process, drivers and challenges for cell-based meat pro- duction
Cell-based meat, also called ‘clean’, lab, syn- thetic or in-vitro meat, has attracted much interest re- cently.
The drivers for cell- based meat production include food security, en- vironment and sustainabil- ity, consumer and public health/safety and animal welfare problems associ- ated with meat production.
Challenges for cell- based meat products in- clude industry scale-up, a reliable muscle tissue source, IP sharing and
☛ continued P11 www.porknews.com.au