Tonic - AusWest Seeds
Transcription
Tonic - AusWest Seeds
Tonic for Dairy Systems Grazing Management Some of the Standout Points from Current Tonic Plantain Research in Dairy Systems Tonic is highly palatable and is preferentially grazed. Tonic suits grazing management similar to ryegrass, with potential yields like that of perennial ryegrass. Ideally a 20-25 day rotation will maintain seedhead palatability through late spring and summer. A grazing rotation of greater than 40 days can lead to a reduction in palatability, particularly of older leaves. Older leaves do not brown or break down as fast as grass species, and can stay in the sward for months, becoming more fibrous. Post grazing residuals of 2-4cm are quite sustainable as long as the pastures are not set stocked at these levels for extended periods. 1. Tonic plantain can produce over 19 tonnes of drymatter per-hectare per year 2. When the metabolisable energy (ME) of ryegrass was moderate (10.5 ME) milk yield was similar from cows fed ryegrass alone or ryegrass supplemented with Tonic plantain 3. When the ME of ryegrass was poor (9.6 ME) supplementing ryegrass with Tonic plantain increased cow drymatter intake (DM) by 6% and milksolids (MS) yield by 19% l a n o i except 4. Feeding Tonic plantain at up to 40% of diet did not affect rumen pH, and had no apparent ill effects on rumen health 5. The urinary N content was 28% lower in cows supplemented 40% Tonic plantain which could have important implications for the environment Table2. DM Intake, Milk Yield and Milksolids Yield of cows fed indoors with low and moderate ME ryegrass supplemented with 20% and 40% plantain. 100% ryegrass 20% plantain 80% ryegrass 40% plantain 60% ryegrass Too low (insufficient dry matter) Significance Supplementing plantain Amount of plantain Correct grazing height Too high (may become unpalatable) Ryegrass ME= 10.5 (MJ/kg DM) DMI (kg DM/cow/day) 15.7 14.8 14.5 * NS Milk yield (kg cow/day) 12.2 12.3 12.5 NS NS Milksolids yield (kg cow/day) 1.01 1.00 1.00 NS NS DMI (kg DM/cow/day) 13.5 14.7 14.0 * NS Milk yield (kg cow/day) 9.9 11.5 11.7 *** NS Milksolids yield (kg cow/day) 0.83 1.02 0.96 ** NS l a m i n a n o i t c produ Ryegrass ME= 9.6 (MJ/kg DM) *Minnee´ and Lee 2012. Proceedings of the workshop “Plantain for Northland Pastures.” NZ Distriibutors Agricom cultivars are available from all quality seed suppliers. For further information and advice contact one of our distributors: AusWest Seeds Stephen Pasture Seeds Smyth Seeds NSW & QLD 1800 224 987 VIC, SA, TAS 03 5335 8055 VIC, STH NSW 03 5762 5288 Seeds for all Seasons Results will vary depending on all the circumstances. Agricom provides no assurances, guarantees or warranties other than those that must be provided by law. To the extent permitted by law Agricom excludes all liability, and has no liability, however arising. www.agricom.com.au www.agricom.com.au • Valuable year-round production • Source of key minerals – calcium, sodium, copper, selenium • Degree of drought tolerance due to coarse deep root system Tonic can add value in terms of both dry matter and quality to any farming system. Tonic contributes invaluable dry matter production, typically at times of the year when ryegrass and other species, e.g. white clover, are not performing. Tonic has a deep, coarse, root system, which gives it a degree of drought tolerance and the ability to respond quickly after summer-dry conditions. Including tonic in a pasture mix will also improve summer pasture quality due to tonic’s high quality leaf production and mineral content. Pure stands of tonic can be used during lambing to increase lamb and ewe weights at weaning. • Strong cool season growth • Exceptional animal growth rates in late winter and spring • Suits a wide range of environments and soil conditions Sowing Rate (kg/ha) 2-3 in a perennial pasture mix 4-5 with chicory & clover as a specialist crop 3-4 with prairie grass, chicory & clover as a specialist crop 2-3 in a lucerne stand 3-4 into existing kikuyu 8-10 as a pure stand Leaf Size Broad, ribbed Growth Habit Erect, leafy Prime Growing Times Drought tolerant, strong winter growth Key Minerals Calcium, Selenium, Copper, Sodium • A species for ‘shoulder’ season growth • A component of a subtropical pasture mix • As a pure stand for animal performance during lambing Tonic can add value, both in terms of dry matter and quality, in a diverse range of ways in any farming system. The benefits of Tonic include improved dry matter production and quality at key times of the year. Tonic also has a positive impact on animal performance by improving the supply of some trace elements. Autumn Summer Spring Sowing date 19/05/11 20 cuts taken up to 30/07/13 Winter RangerHercules Figure 1 shows the significant increased production of Tonic plantain when compared to other plantains Ranger and Hercules. What distinguishes Tonic from all other plantains on the market is its ability to be highly winter active when other plantains have limited growth. Table 1. Liver nutrient analysis Treatment Liver Copper µmol/kg FW Liver Selenium nmol/kg FW Liver B12 nmol/kg FW Tonic plantain 2250 671 620 Perennial ryegrass 716 380 571 Significance P<0.01 P<0.01 NS Source: Moorhead et al. 2002 New Zealand Socitey of Animal Production 62, 171-173. Tonic’s establishment vigour is rapid, similar to ryegrass, particularly as Tonic is cool season active. Plantain can be prone to damage by red legged earthmites and slugs, especially at establishment. Chemical protection is recommended. Tonic can be established by: • Sowing into cultivated ground • Broadcasting - from ground or air • Mulch sowing - into summer grass • Oversowing – drilling into existing pasture/lucerne Tara Hawkins, Peter Hawkins and Julian Murray in an establishing Tonic plantain, phalaris and lucerne pasture. 20,000 18,000 16,000 14,000 12,000 10,000 8,000 6,000 4,000 2,000 0 Tonic Scientific evidence (Moorhead et al, 2002, Hoskin et al, 2005 and Hoskin et al, 2006) suggests Tonic is effective at transferring minerals to the grazing animal. Literature reviewed by Stewart (1996) has identified biologically active compounds in Tonic that have beneficial medicinal properties for livestock. Copper and Selenium are essential micro nutrients that can negatively affect animal health when found in low levels in the diet. Tonic plantain is a fast-establishing variety, and will be productive and persistent over a wide range of soils and climatic conditions. This includes less fertile soils and dryland regions (minimum average rainfall of 450 mm). Peter Hawkins who farms near Harrow has found Tonic plantain to perform well in his farming system for lambing ewes and finishing lambs. “The Tonic plantain is easy to establish which created quality feed early for ewes that were at about to lamb,” said Peter. As well as the bulk of feed it produced he said the palatability and feed quality made this a valuable addition to their feed options. www.agricom.com.au Figure 1. Tonic plantain compared to other plantains, 2011-2013 plantain trail, Ballarat Victoria EstaBlishment Profit lies in the Pasture “We decided to draft the ewes on condition with the lighter mob going onto the Tonic. The better conditioned ewes were put on phalaris based pastures across the rest of the farm. At lamb marking the mulesing contractor said that the lambs that were off the Tonic were a lot heavier compared to the better conditioned mobs that were across the phalaris based pastures, which gave us a lot of confidence in Tonic,” commented Peter. This comment supports research into Tonic Plantain that has shown increased liveweight gains as well as regular differences in dag scores from animals grazing Tonic Plantain compared with other pasture options. • As a companion species in a pasture Hercules on the left compared to Tonic, photo taken 13 June 2012 at Ballarat. animal trial results Judson et al. 2009 evaluated Tonic plantain in New Zealand as a lactation feed for twin bearing ewes lambing in August. This was a breakthrough, as no longer was the sole focus of a novel forage species on summer live weight gain potential. The importance of Tonic’s success in this series of studies was its ability to support a twin-bearing lactating ewe in late winter, and still produce big lambs by weaning. Tonic had an advantage of between 10 and 34% greater weaning weight than ryegrass over the four studies (Figure 2). Figure 2. Weaning weight differences of lambs born, grazed and weaned from perennial ryegrass or Tonic plantain stands Figure 3. Liveweight changes of ewes grazing perennial ryegrass or Tonic plantain stands throughout lactation until weaning 45 40 35 30 25 20 +34% +21% +10% +23% 15 10 5 0 Study 1 Study 2 Perennial ryegrass Tonic Study 3 Ewe liveweight change (kg Liveweight per ewe) The flexible forage herb Plantains aren’t Tonic Plantain Cumulative seasonal yield kgDM/ha Tonic plantain is a mineral-rich perennial grazing herb. It is a valuable pasture for the supply of minerals and dry matter production, particularly in drier regions and less fertile conditions. Recommended Roles Weaning wt (kg Live wt per lamb) exceptional animal production 10 8 6 4 2 0 -2 -4 -6 -8 -10 Study 3 Study 2 Study 4 Study 1 Judson 2008 (109 day lactation) Study 2 Judson et al 2009 (95 day lactation) Study 3 Judson et al. 2009 (87 day lactation) Study 4 Judson 2010 unpublished Hogget lambing (Hogget 90 day lactation) Study 4