Barley or Wheat or Soybean Meal Hig ...

Barley or Wheat or Soybean Meal High Levels in the Diet of Laying Hens

Barley or Wheat or Soybean Meal High Levels in the Diet of Laying Hens

Observed Clinical Signs Happenings

Droppings

  • Wet litter/manure
  • Wet viscous excreta
  • The most notable effect will be wetter more sticky and viscous excreta (5)

Body Parts (Neck, wings, breast, abdomen, shanks, legs, hocks, feet, joints, vent, and skin, abnormalities), skinny body, retarded growth, weight depression

  • Maybe occur footpad lesions in Laying hens in-floor system due to the wet litter or wet manure

Diet or Feed Changes (Recent Feed delivery, Recent formulation /diet, Other silo or improper storage, another feed brand)

  • Most varieties of barley contain 4—7 % of beta-glucan, although, with dry growing conditions that involve rapid maturation and early harvest, the content can increase to 12—15 %
  • Adding synthetic beta-glucanase enzymes to diets containing more than 15—20% barley seems to resolve many of these problems, the usual outward sign of which is wet litter

Barley or Wheat or Soybean Meal High Levels in the Diet of Laying Hens show, exhibit, or manifest any of the following clinical signs happenings:

Observed Clinical Signs Happenings

ALWAYS

NEVER

SOMETIMES

Egg drop

 

  •  

 

Mortality above the standard

 

  •  

 

Visibly sick birds

 

  •  

 

Flock behaviour activity change

 

  •  

 

Droppings abnormalities

  • *

 

 

Respiratory abnormalities

 

  •  

 

Neurological Nervous

 

  •  

 

Lameness or unusual movements, incoordination, reluctance to move

 

  •  

 

Eyes abnormalities

 

  •  

 

Head: Comb Wattles Face Nostrils Sinuses Mount Beak Earlobes (except eyes)

 

  •  

 

Body Parts (Neck, wings, breast, abdomen, shanks, legs, hocks, feet, joints, vent, and skin, abnormalities), skinny body, retarded growth, weight depression

  • *

 

 

Feathers abnormalities

 

  •  

 

Feed Consumption Changes

 

  •  

 

Diet or Feed Changes (Recent Feed delivery, Recent formulation /diet, Other silo or improper storage, another feed brand)

  • *

 

 

Shell quality

 

  •  

 

Internal Egg quality

 

  •  

 

* Sometimes has not been observed or measured the  Droppings abnormalities yet or inadequacy of monitoring systems, and even the course time of the disease

*Sometimes has not been observed the Body parts abnormalities yet or depend on the course time of the disease

* Sometimes has not been observed the relationship between any feed or diet changes and the observed clinical happenings in a flock or several other flocks or different farms

 

 

 

 

Causing Agents
Wheat contains about 5-8 % of pentosans which cause problems with digesta viscosity, leading to reduced overall diet digestibility and also wet manure. Birds do not produce adequate quantities of xilanase enzymes, and so these polymers increased the viscosity of digesta
Affected Systems/Organs
Digestive system
Spread
N/A
Mainly Affects
Wet Litter/Manure. Faecal moisture
Solution
• Most varieties of barley contain 4—7 % of beta-glucan, although, with dry growing conditions that involve rapid maturation and early harvest, the content can increase to 12—15 % Adding appropriate enzymes in the diet Adding synthetic beta-glucanase enzymes to diets containing more than 15—20% barley seems to resolve many of these problems, the usual outward sign of which is wet litter
Suggested Actions
  • Technical assistance recommended
  • Can be managed with feed additives, off-the-shelf medications

Impact on Egg quality

0

Impact on Liveability

0


Impact on Production

2

Overall Economic Impact

2



  1. Steven Leeson, John D. Summers. 2008. Commercial Poultry Nutrition. Third Edition. Page 92-95

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