{"title":"Short communication: Ileal digestibility of amino acids in feed ingredients for 22-, 56-, and 87-kilogram pigs.","authors":"Jung Yeol Sung, Sun Jong You, Beob Gyun Kim","doi":"10.1093/jas/skaf104","DOIUrl":null,"url":null,"abstract":"<p><p>The objective of this experiment was to test the hypothesis that the apparent ileal digestibility (AID) of amino acids (AA) in feed ingredients is not constant in pigs with 3 different body weight (BW) after reaching 20 kg. Eight ileal-cannulated pigs with an initial BW of 22.2 kg (standard deviation = 1.2) were used in a 2-period cross-over design. Each period consisted of a 5-d adaptation and a 2-d ileal digesta collection. Two experimental diets contained corn distillers dried grains with solubles (DDGS) or a soybean meal-wheat mixture (SWM; 70% soybean meal + 30% wheat) as the sole source of nitrogen, respectively. The same pigs were used for the heavier BW groups. The diets and experimental procedure for 55.6-kg (standard deviation = 3.3) pigs and 86.9-kg (standard deviation = 5.1) pigs were identical to those used for 22.2-kg pigs. The AID values were calculated using the index method, with chromic oxide as the indigestible index. A linear increase in the AID of most AA with increasing BW of pigs was observed only in the SWM, whereas no significant difference was observed in the AID of most AA among the different BW groups in corn DDGS (interaction; P < 0.05). The linear increase in the AID values in the SWM is primarily because of the increase from 22 to 56 kg rather than 56 to 87 kg. In conclusion, the AID values of most AA in the SWM were not constant across the BW range of 22 to 87 kg, whereas corn DDGS did not show such variation.</p>","PeriodicalId":14895,"journal":{"name":"Journal of animal science","volume":" ","pages":""},"PeriodicalIF":2.7000,"publicationDate":"2025-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of animal science","FirstCategoryId":"97","ListUrlMain":"https://doi.org/10.1093/jas/skaf104","RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"AGRICULTURE, DAIRY & ANIMAL SCIENCE","Score":null,"Total":0}
引用次数: 0
Abstract
The objective of this experiment was to test the hypothesis that the apparent ileal digestibility (AID) of amino acids (AA) in feed ingredients is not constant in pigs with 3 different body weight (BW) after reaching 20 kg. Eight ileal-cannulated pigs with an initial BW of 22.2 kg (standard deviation = 1.2) were used in a 2-period cross-over design. Each period consisted of a 5-d adaptation and a 2-d ileal digesta collection. Two experimental diets contained corn distillers dried grains with solubles (DDGS) or a soybean meal-wheat mixture (SWM; 70% soybean meal + 30% wheat) as the sole source of nitrogen, respectively. The same pigs were used for the heavier BW groups. The diets and experimental procedure for 55.6-kg (standard deviation = 3.3) pigs and 86.9-kg (standard deviation = 5.1) pigs were identical to those used for 22.2-kg pigs. The AID values were calculated using the index method, with chromic oxide as the indigestible index. A linear increase in the AID of most AA with increasing BW of pigs was observed only in the SWM, whereas no significant difference was observed in the AID of most AA among the different BW groups in corn DDGS (interaction; P < 0.05). The linear increase in the AID values in the SWM is primarily because of the increase from 22 to 56 kg rather than 56 to 87 kg. In conclusion, the AID values of most AA in the SWM were not constant across the BW range of 22 to 87 kg, whereas corn DDGS did not show such variation.
期刊介绍:
The Journal of Animal Science (JAS) is the premier journal for animal science and serves as the leading source of new knowledge and perspective in this area. JAS publishes more than 500 fully reviewed research articles, invited reviews, technical notes, and letters to the editor each year.
Articles published in JAS encompass a broad range of research topics in animal production and fundamental aspects of genetics, nutrition, physiology, and preparation and utilization of animal products. Articles typically report research with beef cattle, companion animals, goats, horses, pigs, and sheep; however, studies involving other farm animals, aquatic and wildlife species, and laboratory animal species that address fundamental questions related to livestock and companion animal biology will be considered for publication.