Implications for company management and broiler feed formulation

Feed represents over 60% of the overall production costs in the broiler industry. However, one has to keep in mind that lowering feed cost per ton does not automatically mean higher profitability. Figures 25.11 and 25.12

give examples of how different Met+Cys and Lys levels each affect costs per kg of feed, costs per kg of bird and costs per kg of breast meat produced. For comparison, the present NRC (1994) recommendations for growing broilers state 7.2 g kg-1 Met+Cys and 10.0 g kg-1 Lys. Despite the fact that feed costs increase due to higher supplementation of amino acids when exceeding the NRC levels considerably, feed costs per kg bird, and even more feed costs per kg breast meat, decrease significantly, hence increasing the overall profit of the broiler operation. These examples indicate that focusing solely on low feed cost can substantially reduce the overall profit of a poultry integration.

raJS

90 85 80 75

85 87 89 91 93

R2=0.80

Fig. 25.7. Relative responses to graded dietary Thr levels (three broiler grower experiments, approx. 20-40 days of age), (a) Weight gain; (b) feed to gain ratio; (c) breast meat yield (% of live weight).

m-to

0.21

Feed cost US$160 H

Feed cost US$140 H

Minimum @ 6.5 g kgr1 Thr

Feed cost US$120 H

Fig. 25.8. Effect of dietary Thr content in growing broilers 20^40 days of age at different feed cost, (a) Feed cost kg-1 live weight gain; (b) feed cost kg-1 breast meat yield.

Fig. 25.8. Effect of dietary Thr content in growing broilers 20^40 days of age at different feed cost, (a) Feed cost kg-1 live weight gain; (b) feed cost kg-1 breast meat yield.

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