Good biosecurity helps Trang Wattana Farms grow big

30-12-2010 | |
Good biosecurity helps Trang Wattana Farms grow big

Trang Wattana Farms are situated in the Trang province of southern Thailand. The province’s coastline escaped the catastrophic tsunami which of course devasted the west coast and Phuket tourist area in the winter of 2004.

By Stuart Lumb

Trang Wattana Farm company is owned by Rawat Pokawattana. He has been in the pig business for 26 years and when asked why he went into pigs, he answers like so many others do: “I was told it was a good business to get into!”
  This was in part due to the demand for pork from the many Chinese living in Trang province; furthermore, 26 years ago not many pig farms existed in the area. The business which started with 100 sows had risen to 1,500 sows by the turn of the millennium. Pig prices were very low in 2002/3 with small farmers going out of business and large ones cutting back by 15-20%. Pig prices increased on the back of lower numbers and so Pokawattana added another 500 sows in 2004.Prices are currently going down. The pig cycle operates in Thailand like anywhere else in the world – nationally sow numbers dropped in 2008 due to poor prices. This meant fewer pigs on the market in 2009 and hence higher prices last year. Pokawattana already anticipated this to happen last year as more pigs started to come on to the market. The unit now has 2,500 females, producing 24-25 pigs per sow per year. Much of this achievement in a hot country like Thailand, Pokawattana puts down to his rigid biosecurity protocols. The nearest pigs are 20-30 km away and the unit is surrounded by rubber and palm tree plantations. Visitors have to be three days pig-free, must shower in and wear unit clothing. The farm produces its own feed and the feed mill is 0.5 km from the actual pigs. No vehicles are allowed on the farm, with pigs being loaded and unloaded at the farm perimeter. All vehicles pass through a disinfectant wheel dip and sprayer. The unit has 180 staff on the payroll.

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Breeding stock have always been imported from Scandanavia and Germany. Currently GGPs are imported from Denmark and the unit breeds its own Large White/ Landrace F1s. Pokawattana also imports Durocs from Denmark which he crosses with German Piétrains to produce his own Piétrain/ Duroc terminal sires. “I prefer German Piétrains to the Belgain lines as they have better growth rate,” says Pokawattana. Stock are vaccinated against swine fever, Foot-and-Mouth Disease (FMD), Aujeszky’s Disease and pneumonia. The unit receives a veterinary inspection on a weekly basis. The farrowing houses are cooled using a tunnel ventilation system, with sows that are housed in three rows with two feeding/ access passages. Interestingly, the sows are all housed by parity. Reasons for this are easier management; similar parities have similar immune systems which makes disease control easier, plus sows are of similar weight which makes feeding easier. The farrowing houses are staffed 24 hours per day, with women. Lamps are used at farrowing and temporary boxed creeps are put in place for the first few days after farrowing. Piglets are dusted with Mistral at birth to dry them off, reduce chilling and to encourage early intake of colostrum.
  Getting feed into lactating sows is very hard in hot climates. Pokawattana’s policy is to manually feed a 1.2% lysine ration four times a day. Piglets are fed a milk replacer, for the first ten days after which they get a home milled creep meal mixed with water, as a porridge. The creep also contains 3,000 ppm of zinc oxide.
  Gilts are weaned at 30 days and sows at 26 days, which is slightly later than most Thai units (24-25 days is the average) after which the piglets get moved to fully slatted nurseries where they stay until they reach 20 kg. A plastic slatted panel is positioned on top of the steel slats as a piglet comfort aid. Piglets are meal fed and antibiotics are added (CTC) at 200 ppm for the first week after weaning.
  After weaning, sows are housed in traditional part slatted gestation stalls. The farm has its own boar stud and sows are generally inseminated twice over 24 hours, although some sows receive three inseminations.

Growing & finishing
Pigs are moved at 20 kg to the finishing sheds where they are housed in 90% solid floored pens. Manure is regularly hosed off the lying area into a drain running the full length of the building. This uses a lot of water, however the farm has its own borehole supply with water being chlorinated before being circulated through the piggeries. Tunnel ventilation is again employed with extractor fans being imported from Italian manufacturer Euroemme. Carcass weights range from 91-100 kg deadweight (average is 95 kg), with feed conversion rates from weaning to slaughter standing at 2.3:1.

The slurry lagoons are covered with tough rubber sheeting, with the biogas from the slurry powering a Deutz engine linked to a generator which produces 70,000 kWh of electricity per month. The sludge left after digestion is transported by gravity along a series of channels to a block of shallow pits, where the digestate soon dries out. There are four pits which are filled in rotation. By the time the fourth pit is being filled, the contents of the first pit have dried into solid material and are bagged up, enabling the first pit to take fresh digestate. The solids are then sold off to neighbouring farmers as a very useful fertiliser.

Trang Wattana has it’s own substantial feed mill which produces 18,000 tonnes of meal annually. Meal is distributed round the unit in bulkers and augered into feed bins, with all the stock being fed by hand. Pokawattana has interesting views regarding his feed policy. He is not keen on using mycotoxin binders, preferring to pay a premium for top quality ingredients. Ingredients used are maize, full fat soya, broken rice, cassava, fishmeal, with coconut oil, palm oil and soya oil providing extra energy. Plasma can be fed in Thailand but it’s very expensive. Meat and bone meal, which has to be imported, can also be fed, but it’s not used in the rations. Pre- mixes are bought in from Betagro, one of Thailand’s well-known integrators.


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Stuart Lumb Freelance journalist