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Functional Additives
Friday, November 14, 2008 12:40:33 PM
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Management of feed energy for pullets and layers
 
Kenton Kreager
 

One of the generally accepted principles of poultry nutrition is that birds will consume enough feed to satisfy energy need. We now know this is not always the case. This energy demand is a consequence of several factors including ambient temperature, current body weight and body growth, rate of production, egg size and degree of feathering.

 

Historically the calculation of energy needs has been of little concern; layers have generally been permitted to determine their own level of feed consumption and rations were formulated for the other required nutrients accordingly.

 

For example, if a flock is naturally consuming 104.3 gms/ bird/ day (23 pounds/ 100/ day) and it is determined that a daily intake of 0.345 grams of methionine is optimal, then the feed would be formulated to contain 0.33 percent methionine (0.345 divide by 104.3 times 100).

 

The other nutrients are calculated similarly.

 

Although this approach is adequate under normal conditions, there may be situations when birds are unable to consume enough feed and thus not enough energy to maintain optimum production. Then it becomes necessary to manipulate energy intake by using higher energy feed ingredients and/ or by utilising other means to stimulate feed intake.

 
 

For more of the article, please click here

 

Article made possible through the contribution of Hy-Line International.

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