Feed wastage - Shown in Table 5 are factors that could be operating in a broiler house to increase the apparent feed consumption and so lead to an incorrect picture of feed efficiency and flock performance. Although it is hardly possible that any grower today would have all factors operating against him at any one time, it is surprising how many have several of them in operation on their farms. This problem is strictly under the control of the producer and costs little or nothing to correct. However, it seems difficult to get the total feed wastage below the figure of around 2% even under the best management conditions.