search.noResults

search.searching

saml.title
dataCollection.invalidEmail
note.createNoteMessage

search.noResults

search.searching

orderForm.title

orderForm.productCode
orderForm.description
orderForm.quantity
orderForm.itemPrice
orderForm.price
orderForm.totalPrice
orderForm.deliveryDetails.billingAddress
orderForm.deliveryDetails.deliveryAddress
orderForm.noItems
Feeding the immune system Nutrition is another major factor influencing bird health and immunity. Like people, birds cannot be expected to perform at their optimum level without first having all of their nutri- tional needs met. The immune system is extremely complex and to function at its best requires an array of vitamins and minerals, alongside regular calorie-supplying nutrients. In terms of the immune system, selenium is critical but often overlooked. Selenium forms part of the antioxidant pathway as it is a component of the enzyme glutathione peroxidase. This pathway helps to remove compounds that cause damage to cells within the body. If birds do not have the correct forms or amount of selenium present, their antioxidant status will suffer. While it might not be immediately obvious how this is linked to immunity, it is, in numerous ways. A compromised antioxidant status and oxidative stress can cause immune cells to burst. It can also cause a reduction in the production of an- tibodies which are crucial to fighting off infection. There is also evidence that shows that enhanced oxidative stress can


actually damage the communication between different types of immune cells. Any damage to the immune system will pre- vent the bird from being able to fight pathogens effectively, leading to higher morbidity and mortality.


Interaction with microbes Maintaining bird health is key to keep production going. Pre- venting birds from being exposed to any pathogen challenge is the most effective way to manage this. However, patho- gens will inevitably enter the shed. It is also worth consider- ing that although cleaning out sheds is supposed to remove all organisms, it reduces the micro-organism load, leaving the same bacterial profile present, just in much smaller numbers. It is inevitable that birds will interact with micro-organisms in one way or another. The immune system is critical to fighting off any pathogens that have by-passed the biosecurity measures and managed to enter the bird. So, ensuring the optimum functioning of the immune system is vital to maintaining bird health.


▶ POULTRY WORLD | No. 1, 2021


Birds will inev it- ably encounter pathogens, even with proper biosecurity measures in place. Ensuring the optimum functioning of the immune sys- tem is vital to maintaining bird health.


17


Page 1  |  Page 2  |  Page 3  |  Page 4  |  Page 5  |  Page 6  |  Page 7  |  Page 8  |  Page 9  |  Page 10  |  Page 11  |  Page 12  |  Page 13  |  Page 14  |  Page 15  |  Page 16  |  Page 17  |  Page 18  |  Page 19  |  Page 20  |  Page 21  |  Page 22  |  Page 23  |  Page 24  |  Page 25  |  Page 26  |  Page 27  |  Page 28  |  Page 29  |  Page 30  |  Page 31  |  Page 32  |  Page 33  |  Page 34  |  Page 35  |  Page 36  |  Page 37  |  Page 38  |  Page 39  |  Page 40  |  Page 41  |  Page 42  |  Page 43  |  Page 44