| Onset and end of the fattening period | Starts Day 90 → Choice between fattening or breeding Ends Day 180 | | --- | --- | | Initial and final BW | 30kg → 120kg | | Expected daily BW gain | DWG 800g | | Aim of feeding | • high feed intake • Quality meat product • highly daily gain • good feed efficieny | | Feeds and their protein and energy contents | CP varies depedning on weight. ◦ 30-50kg → 18% CP ◦ 50-80kg → 15.5 % CP ◦ 80-120kg → 13% CP • DE always 14.0 MJ/kg feed First limiting AA → LYS for 1g protein gain 0.12g LYS must e supplemented | | Physical forms of diets | Wet or dry (pelleted) diet. Pig can choose to add water | | Daily feed intake | Day 90 → 1 kg, Day 120 → 3-3.5 kg | | Feed efficiency | less than < 3.0 kg/kg | | Feeding technology | Ad libitum & phase feeding (saves money and food) +automatic feeders with indivudal programming capability | | Prevention of ulcer | Smaller size feed particles will INCREASE ulcer risk….

Larger size particles will allow more digestive enzyme to work • more fiber • Buffering material • Clay can be added for stomac lining • Vitamins A E K and Se |

Problems of intensive feeding :

• Gastric ulcers → common in esophageus, and pars non-glandularis of stomach

  Factors :

  • Stress
  • High energy diet
    • High level of wheat in excess of 55%
  • Size of feed particles (should be larger…to prevent uclers)
  • Low fibre
  • Deficiency of Vit-E or selenium

Clinical signs of ulcerations:

• Acute → pale skin, weak, passing of dark faeces , vomtiing, inappetance
• Chronic → intermittent appetite and

Ulcer PREVENTION :

• Larger paticle size
• More fibre
• Buffer materials
• Stomach lining (clay)
• Vit - A, E, K and selenium
• Enzyme supplements → NSP - non-starch-polysaccharids