As with all livestock, increased protein diets (10 to 14%) and sufficient calories during the prepuberty period yield higher growth rates and larger eventual size than lower protein rates and limited calories.
Seperti semua hewan ternak, pertambahan kebutuhan protein (10 ke 14%) serta jumlah kalori yang mencukupi ketika usia sebelum dewasa mendatangkan kadar pertumbuhan lebih tinggi dan ukuran dewasa yang lebih besar daripada kadar protein rendah dan kalori.