Diet and stomach characteristics of feral piglets (Sus scrofa): Implications for farmed piglets

VAN HEES, HUBÈRT M. J.; BALLARI, SEBASTIÁN A.; DIESTE-PÉREZ, LUCÍA; CARPINETTI, BRUNO N.; JANSSENS, GEERT P. J.

JOURNAL OF ANIMAL PHYSIOLOGY AND ANIMAL NUTRITION

WILEY-BLACKWELL PUBLISHING, INC

Año: 2022

0931-2439

Evaluation of the diet of the pig (Sus scrofa) in natural settings may provide new views on diet optimization for growth and development of commercially raised piglets under farm conditions. A field study was conducted to gain insight in the diet and stomach characteristics of feral piglets. Forty animals (body weight: 4.6 ± 1.37 kg) were collected from the Bahía Samborombón (Buenos Aires, Argentina). Stomachs were weighed after storage in formalin and the particle size distribution of their contents was determined by wet sieving. Diet items present in their stomachs were classified and their proportional weight and relative abundance was calculated. Based on their dentition, 5, 16 and 19 piglets were approximately 1, 3–6 and 6–16 weeks of age respectively. Vegetable matter (mainly ‘leaves and stems’) was predominantly present in 39 animals. It represented on average 83 ± 36.4% of total stomach contents by weight. The stomachs of 12 piglets contained curd and represented on average 16 ± 35.1% by weight. Other diet items were less abundant or absent. The proportion of stomach particles retained were 24%, 13%, 22%, 13% and 28% for sieves with mesh sizes of 2000, 1000, 420, 210 and