Optimal Threonine:Lysine Ratio for Growing Pigs of Different Sexes
DC Field | Value | Language |
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dc.contributor.author | Chang, W.H. | - |
dc.contributor.author | Lee, J.H. | - |
dc.contributor.author | Heo, K.N. | - |
dc.contributor.author | Paik, I.K. | - |
dc.contributor.author | Han, I.K. | - |
dc.date.accessioned | 2021-06-18T14:44:13Z | - |
dc.date.available | 2021-06-18T14:44:13Z | - |
dc.date.issued | 2000-12 | - |
dc.identifier.issn | 1011-2367 | - |
dc.identifier.issn | 1976-5517 | - |
dc.identifier.uri | https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/47400 | - |
dc.description.abstract | This study was conducted to investigate the effects of threonine:lysine ratios on growth performance, apparent nutrient digestibility and blood urea nitrogen (BUN) concentration, and to estimate the optimal threonine:lysine ratios for growing barrows and gilts. A total of 150 pigs (Landrace × Yorkshire × Duroc, 16.75±0.42 kg average body weight, 75 barrows and 75 gilts) was randomly allotted into six treatments in a 2×3 factorial design. Six diets were formulated to contain 1.12% lysine for barrows and 1.33% lysine for gilts with three threonine:lysine ratios (50, 60 and 70%) for both barrows and gilts. Throughout the whole experimental period (16 to 56 kg body weight), there was no interaction between sex and dietary threonine:lysine ratio in average daily gain (ADG), average daily feed intake (ADFI) and feed conversion rate (FCR). Between sexes, there was a clear sex-effect showing better growth performance of barrows. Barrows consumed more feed (p<0.01) and grew faster (p<0.01) than gilts. For barrows, there was a trend to improved ADG and FCR with increasing threonine:lysine ratio. For gilts, there was a trend to improved ADG and FCR up to threonine:lysine ratio of 60%, but not significant. There was no interaction between sex and threonine:lysine ratio in nutrient digestibilities of growing pigs except for crude ash (CA). Between sexes, there were differences in nutrient digestibilities, except for calcium for which gilts showed higher a digestibility (p<0.01). Among dietary threonine:lysine ratios, there were no differences in nutrient digestibilities. Mean values of essential amino acids (EAA), non-essential amino acids (NEAA) and total amino acids (TAA) digestibilities were not affected by sex and dietary threonine:lysine ratio. There was no evidence of an interaction between sexes and dietary threonine:lysine ratio. Between sexes, total BUN concentration was lower in gilts than barrows (p<0.05). It was concluded that a 70 and 60% dietary threonine:lysine ratio for barrows (1.12% lysine) and gilts (1.33% lysine) tended to result in better growth performances and nutrient utilization and lower BUN concentration than other threonine:lysine ratios. | - |
dc.format.extent | 7 | - |
dc.language | 영어 | - |
dc.language.iso | ENG | - |
dc.publisher | Asian-Australasian Association of Animal Production Societies | - |
dc.title | Optimal Threonine:Lysine Ratio for Growing Pigs of Different Sexes | - |
dc.type | Article | - |
dc.identifier.doi | 10.5713/ajas.2000.1731 | - |
dc.identifier.bibliographicCitation | Asian-Australasian Journal of Animal Sciences, v.13, no.12, pp 1731 - 1737 | - |
dc.description.isOpenAccess | N | - |
dc.identifier.scopusid | 2-s2.0-0034365364 | - |
dc.citation.endPage | 1737 | - |
dc.citation.number | 12 | - |
dc.citation.startPage | 1731 | - |
dc.citation.title | Asian-Australasian Journal of Animal Sciences | - |
dc.citation.volume | 13 | - |
dc.type.docType | Article | - |
dc.publisher.location | 대한민국 | - |
dc.subject.keywordAuthor | Amino Acid Digestibility | - |
dc.subject.keywordAuthor | BUN | - |
dc.subject.keywordAuthor | Growing Pig | - |
dc.subject.keywordAuthor | Growth Performance | - |
dc.subject.keywordAuthor | Sexes | - |
dc.subject.keywordAuthor | Threonine:Lysine Ratio | - |
dc.description.journalRegisteredClass | scopus | - |
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