Comparative Gastric Morphometry of Muong Indigenous and Vietnamese Wild Pigs

Abstract

It is hypothesized that despite sharing a similar habitat, the Muong indigenous and Vietnamese wild pigs may reveal different gastric morphology. Due to the protective nature of procuring these pigs, a total of 12 Muong indigenous pigs and nine Vietnamese wild pigs stomach collected post mortem were analysed for selected biometric parameters and histology. The result indicated that the stomach of the Vietnamese wild pig is broader with a bigger capacity and greater proportion of proper gastric glands. Interestingly, the stomach mass correlated well with live body weight in both breeds apart from possessing similar histomorphometry of the gastric gland regions. On the other hand, the thicker (P < 0.05) submucosa in the Vietnamese wild pig is attributed to the presence of numerous loose connective tissues, abundant blood vessels, adipose tissues and nerve plexus. The appearance of lymphoid follicles underneath the tubular gastric glands in the Vietnamese wild pig exceeded that of Muong indigenous pigs. This finding suggested that the difference in feeding behavior as well as immunity. In conclusion, adaptations found in the Vietnamese wild pig indicated that this breed is equipped with a bigger and effectively functional stomach to suit its digestive physiology and immunity in the wild.

Forage Consumption and Its Effects on the Performance of Growing Swine—Discussed in Relation to European Wild Boar (Sus scrofa L.) in Semi-Extensive Systems: A Review

“…Wild boar also typically have a thinner layer of back fat than domestic pigs [27]. Comparing the gastrointestinal morphology of Vietnamese wild boar and a local heritage breed (Muong pigs), Trang et al [28] reported that the wild boar had a larger stomach, with a more globose and rounded shape, with greater capacity for voluminous feed storage, formed with a lesser proportion of cardiac glands, a greater proportion of proper gastric glands and with no differences in the proportion of pyloric glands.…”

The stomach of the wild herbivorous hystricomorph rodent Lagostomus maximus: A comparative histomorphological and histochemical study of the cardiac and pyloric regions

“…Gastric glands have been studied in diverse species and differences were determined in the secreting nature of their cells (Boonzaier et al., 2013b; Fayed et al., 2010; Scillitani et al., 2007; Trang, Ooi, Zuki, & Noordin, 2012). In the plains viscacha, the cardiac and pyloric glands exhibit different mucous cell types according to the mucin type secreted.…”

“…Type “a” mucous cells secrete GCs with oxidizable vicinal diols, type “b” cells produce mixed GCs (neutral and acid) and type “c” synthesize carboxylated GCs. On the contrary, studies on camels ( Camelus dromedaries ; Abdel‐Magied & Taha, 2003) and pigs ( Sus scrofa ; Trang et al., 2012) have described the cardiac glands to secrete chiefly sulphated acid and carboxylated GCs. Sheahan and Jervis (1976) demonstrated that sulphated acid mucins are dominant in the stomachs of different species of rodents.…”