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Australian spray dried porcine plasma offers solutions to nutritionist and pig producers by, Dr Megan V Edwards, Animal Nutrition Consultant, ACE Livestock Consulting Pty Ltd, megan@acelive.com.au

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pray dried plasma proteins are a relatively new feed ingredient available to Australian farmers. Sonac Australia (Darling Ingredients) is the only company in Australia currently producing spray dried plasma proteins from a range of species including pigs, cattle and sheep for domestic and export markets. The introduction of spray dried porcine plasma to the pig feed industry in Australia has been a huge nutritional and welfare advantage to the pig industry. Local research trials conducting across Australia in a range of settings (research & commercial) have delivered consistent improvements in performance and health. At generous inclusion rates (3-5%) spray dried porcine plasma when offered in well-balanced piglet diets can significantly enhance feed intake and aid in maintaining gut function, integrity and development (Edwards et al., 2012; Hernandez et al., 2010). Digestive development in the immature pig is substrate driven so nutritional strategies, which enhance and maintain feed intake, benefit the newly weaned pig by limiting the negative consequences associated with commercial weaning practices. Interestingly, the benefits provide by plasma equally benefit light and heavy pigs (Hernandez et al., 2010), as well as equally benefiting the progeny of gilts and sows (Edwards et al 2010). Benefits reported from the use of spray dried plasma in Australian pigs include; improved weight gain, improved feed intake, improved feed conversion, improve protein metabolism, improved immunity, reduced mortality and reduced cost of production. A summary of the published studies using Australian produced spray dried porcine plasma is shown below in Table 1. To extract the full value out of spray dried porcine plasma in the diets of young pigs it is important that plasma is carefully formulated into balanced piglet diets. This includes formulating to all 10 essential amino acids and also ensuring the balance of the branch amino acids (valine, isoleucine and leucine) is appropriate to maximise feed intake. Some animal proteins including blood products have an excess of leucine relative to isoleucine. Blood products can be used generously in pig diets when the formulation ensures the balance between leucine and iso-leucine is met and that valine is not limiting (Kerr et al., 2004). With L-Isoleucine and L-valine now available in the feed industry nutritionist can use animal proteins and especially blood products generously with confidence. Sodium is another important nutrient to monitor when Table 1. Summary of published weaner trials done using Australian spray dried porcine plasma. Author

Duration

Pig details

Inclusion rate

Performance response

Brewster et al., 2015

12 days

26 day old 8.9kg

Edwards et al., 2012

7 days

28 day old 5.0% SDPP ↑50% ADG Medicated ↑20% ADFI 400ppm CTC gilt progeny 6.68kg 400ppm tilmicosin 28 day old 5.0% SDPP ↑35% ADG ↑10% ADFI sow progeny 8.07kg

Hernandez et al., 2010

7 days

21 day old 5.0% SDPP ↑112% ADG Non-medicated ↑42% ADFI light weaners ↓ 27% PUN 4.9kg

2.5% SDPP ↑12.2% ADG Non-medicated

21 day old 5.0% SDPP ↑78% ADG ↑33% ADFI heavy weaners ↓27% PUN 6.9kg

52 | June 2016 - Milling and Grain

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JUN 2016 - Milling and Grain magazine  
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