PHOTO: HANS PRINSEN


One key to be considered is the nutritional value of methionine (Met) sources used to balance the Met and cysteine (Cys) supply of broilers.


Table 1 – Average final weights and daily weight gain for three cropping dates and overall. Final body weight (kg/animal)


Thinning 1


Control with MHA-FA Mean value CV a


1.601 2.8%


Experiment with DL-Met Mean value CV a


p-value b


1.596 4.4%


0.88 Thinning 2 Main Harvest


2.003 3.4%


1.998 3.9%


0.89


2.874 4.5%


2.869 4.2%


0.92 a CV: coefficient of variation b p-value: probability of error according to Student’s T-test. ▶ POULTRY WORLD | No. 7, 2022 39 Total


2.434 4.1%


2.421 4.1%


0.76


Daily body weight gain (g/day) Thinning 1


53.84 2.9%


53.65 4.5%


0.88


57.75 3.4%


57.58 3.9%


0.89 Thinning 2 Main Harvest


68.10 3.4%


68.00 3.3%


0.92 Total


63.99 3.3%


63.79 3.6%


0.85


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