Comparison of growth performance, chemical composition, and functional amino acids composition of hybrid wild boars under different crossing systems

Abstract

The objective of this experiment was to evaluate the growth performance, chemical composition, and functional amino acids (FAA) composition of two crossing systems between wild boars and different domesticated pig breeds. Forty castrated male pigs at 60 days of age from 3 breeds including Wild boar (W), Bamei (B) and Yorkshire (Y) and their crossing systems Wild boar × Bamei (W × B) and Wild boar × Yorkshire (W × Y) were assigned into five groups, respectively. After 100 days of feeding, the growth performance, chemical composition and amino acids (AA) in longissimus muscle were analysed. The ADG (P < .01) in W was lower than other breeds (B and Y) and their crossing systems (W × B and W × Y) (P < .01). The content of intramuscular fat (IMF) was decreased (P < .01) in W when compared with other breeds (B and Y) and their crossing systems (W × B and W × Y) (P < .01). In terms of the levels of FAA, leucine in W was lower than those of the other breeds (B and Y) or their crossing systems (W × B and W × Y) (P < .01), whereas the levels of proline, cysteine, glutamate, total FAA, total AA, and total FAA/total AA was the highest in the Wild boar (P < .01). Herein, cross breeding with domesticated pigs was shown to be an effective method to improve the growth performance of wild boars, and the extent of improvement was breed dependent. Compared with domesticated pigs and cross-bred pigs, wild boars showed lower growth rate, but lower IMF and better FAA composition in longissimus muscle.

Keywords

• Growth performance
• chemical composition
• functional amino acids
• pig
• breeds
• cross combinations
• Longissimus muscle