{"doi":"10.1079/bjn19760104","title":"Studies on digestion and absorption in the intestines of growing pigs. Measurements of the flow of digesta and pH","abstract":"<jats:p>1. Thirty-five pigs were fitted with single re-entrant cannulas in either the duodenum, jejunum or ileum. A further twenty-four pigs were used in a conventional digestibility trial.</jats:p><jats:p>2. Methods for collecting, sampling and returning digesta were developed.</jats:p><jats:p>3. A ‘practical-type’ diet and two purified diets were used, fed twice daily.</jats:p><jats:p>4. Flow and pH of digesta were measured hourly in the duodenum and jejunum, and every 6 h in the ileum.</jats:p><jats:p>5. In the duodenum and jejunum there were clear flow responses to feeding, while such an effect was not found in the ileum where the flow-rate was much lower and more uniform than in the former sites.</jats:p><jats:p>6. In the duodenum and jejunum, and within 6 h periods in the ileum, there was considerable variation in the flow-rate between different pigs within each hour but there was less variation in pH.</jats:p><jats:p>7. The pattern of flow in the duodenum and jejunum was similar for each of the diets but the total flow and the average pH in 24 h differed significantly between diets. There were more digesta of a lower pH from the ‘practical-type’ diet than the purified diets.</jats:p><jats:p>8. The pH in the duodenum was highest after feeding and decreased with increasing time after feeding. In the jejunum and ileum the pH varied over a much smaller range than in the duodenum.</jats:p><jats:p>9. Collections for 6 h periods appeared to be insufficiently long to predict the values obtained in 24 h collections with reasonable accuracy.</jats:p>","journal":"British Journal of Nutrition","year":1976,"id":32396,"datarank":7.432159001972228,"base_score":4.465908118654584,"endowment":4.465908118654584,"self_citation_contribution":0.6698862177981877,"citation_network_contribution":6.762272784174041,"self_endowment_contribution":0.6698862177981877,"citer_contribution":6.762272784174041,"corpus_percentile":null,"corpus_rank":null,"citation_count":86,"citer_count":73,"citers_with_citation_signal":67,"citers_with_endowment":67,"datacite_reuse_total":0,"is_dataset":false,"is_dataset_confidence":null,"is_oa":false,"file_count":0,"downloads":0,"has_version_chain":false,"published_date":null,"algorithm_id":"datarank_citation_only_1hop_v6","ranking_scope":"data_only","authors":[{"id":171598,"name":"Rosemary J. Fulford","orcid":null,"position":1,"is_corresponding":false},{"id":171599,"name":"A. G. Low","orcid":null,"position":2,"is_corresponding":false},{"id":171597,"name":"R. 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