Non-invasive measures of oral-rectal transit in young pigs
| Autor: | John M. Hutson, Andre Yi Feng Tan, Magdy Sourial, Bridget R. Southwell |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
medicine.medical_specialty
Blue dye General Veterinary business.industry Stomach digestive oral and skin physiology Non invasive Large white Transit time Gastroenterology Stomach emptying 03 medical and health sciences 0302 clinical medicine medicine.anatomical_structure 030225 pediatrics 030220 oncology & carcinogenesis Internal medicine medicine Animal Science and Zoology Transit (astronomy) business Light anaesthesia |
| Zdroj: | Livestock Science. 188:13-20 |
| ISSN: | 1871-1413 |
| DOI: | 10.1016/j.livsci.2016.03.010 |
| Popis: | The gastrointestinal transit of markers in pigs has been well studied, but the methods and approaches are different from gastrointestinal studies performed in humans clinically. Aim To develop a non-invasive method of estimating oral-rectal transit times in young pigs. Methods We performed transit studies in 3 groups of 4 week-old, Large White female pigs. Group 1. Ten animals (5.7±0.34 kg (mean±SEM)) were fed blue-dyed grower feed and placed under video surveillance. Group 2a. Twenty-two animals (7.7±0.59 kg) from the same pig supplier were administered 18 4 mm-diameter radio-opaque plastic markers under light anaesthesia (5% isofluorane), and we took abdominal x-rays at 6, 30, 54 and 78 h. Group 2b. Eight pigs (9.2±0.48 kg) from a different supplier also underwent plastic marker transit studies. Results Using blue dye (fluid transit), the median (25th, 75th percentiles) time to first incidence of blue-dyed stool was 13.2 (10.2, 18.1) h and to last blue stool was 24.1 (22.4, 40.3) h. Using plastic markers, markers were evacuated between 30 and 80+ hours with differences in stomach emptying between two groups of animals from different farms. Median oral-rectal transit times were 25.2 (17.8, 40.5) h and 48.9 (26.9, 68.3) h in the second and third groups (M-W test, P=0.04). Conclusion There are differences in the transit of fluid- and solid-phase marker in pigs. Fluid-phase markers appear earlier than solid markers. Monitoring the evacuation of fluid-phase dye using video surveillance is difficult. Using plastic markers and x-rays to estimate the segmental and oral-rectal transit times in young pigs may be a useful method that can be correlated to oral-rectal transit studies performed in humans. The ability of pigs to hold solids in the stomach for extended times complicates transit studies. There are some differences in transit in pigs from different breeders. |
| Databáze: | OpenAIRE |
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