Effects of dietary threonine:lysine ratioes and sanitary conditions on performance, plasma urea nitrogen, plasma-free threonine and lysine of weaned pigs
Two 21 d-experiments were conducted to determine the optimum standardized ileal digestible (SID) threonine:lysine ratio (Thr:Lys) for weaned piglets reared under clean (Exp. 1) or unclean (Exp. 2) sanitary conditions and fed antibiotic-free diets. In each experiment, 90 mixed-sex pigs (Duroc × [York...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
KeAi Communications Co., Ltd.
2015-12-01
|
| Series: | Animal Nutrition |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2405654515300378 |
| _version_ | 1818726033364353024 |
|---|---|
| author | Balachandar Jayaraman John Htoo Charles Martin Nyachoti |
| author_facet | Balachandar Jayaraman John Htoo Charles Martin Nyachoti |
| author_sort | Balachandar Jayaraman |
| collection | DOAJ |
| description | Two 21 d-experiments were conducted to determine the optimum standardized ileal digestible (SID) threonine:lysine ratio (Thr:Lys) for weaned piglets reared under clean (Exp. 1) or unclean (Exp. 2) sanitary conditions and fed antibiotic-free diets. In each experiment, 90 mixed-sex pigs (Duroc × [Yorkshire × Landrace]; initial BW 7.2 ± 0.3 kg) were randomly assigned to 5 dietary treatments each with 6 replicates (3 pigs per pen). The dietary treatments were 5 graded levels of SID Thr:Lys (55, 59, 63, 67 and 71%). Diets were corn-wheat-soybean meal-based with a constant SID Lys of 1.18% that was set to be second limiting amino acid. In Exp. 1 and Exp. 2, plasma-free Thr increased (P = 0.05) with increasing dietary SID Thr:Lys. In Exp. 1, the SID Thr:Lys for gain-to-feed ratio (G:F) was optimized at 65%. In Exp. 2, the estimated optimal SID Thr:Lys for overall G:F was 66.5%. In conclusion, an average optimal SID Thr:Lys of 65 and 66.5% could be used to optimize feed efficiency for weaned pigs under clean and unclean sanitary conditions, respectively. |
| first_indexed | 2024-12-17T21:51:46Z |
| format | Article |
| id | doaj.art-807e9cdafeaa4312a93cef415ed8116f |
| institution | Directory Open Access Journal |
| issn | 2405-6545 |
| language | English |
| last_indexed | 2024-12-17T21:51:46Z |
| publishDate | 2015-12-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Animal Nutrition |
| spelling | doaj.art-807e9cdafeaa4312a93cef415ed8116f2022-12-21T21:31:16ZengKeAi Communications Co., Ltd.Animal Nutrition2405-65452015-12-011428328810.1016/j.aninu.2015.09.003Effects of dietary threonine:lysine ratioes and sanitary conditions on performance, plasma urea nitrogen, plasma-free threonine and lysine of weaned pigsBalachandar Jayaraman0John Htoo1Charles Martin Nyachoti2Department of Animal Science, University of Manitoba, Winnipeg R3T 2N2, CanadaEvonik Nutrition and Care GmbH, Hanau 63457, GermanyDepartment of Animal Science, University of Manitoba, Winnipeg R3T 2N2, CanadaTwo 21 d-experiments were conducted to determine the optimum standardized ileal digestible (SID) threonine:lysine ratio (Thr:Lys) for weaned piglets reared under clean (Exp. 1) or unclean (Exp. 2) sanitary conditions and fed antibiotic-free diets. In each experiment, 90 mixed-sex pigs (Duroc × [Yorkshire × Landrace]; initial BW 7.2 ± 0.3 kg) were randomly assigned to 5 dietary treatments each with 6 replicates (3 pigs per pen). The dietary treatments were 5 graded levels of SID Thr:Lys (55, 59, 63, 67 and 71%). Diets were corn-wheat-soybean meal-based with a constant SID Lys of 1.18% that was set to be second limiting amino acid. In Exp. 1 and Exp. 2, plasma-free Thr increased (P = 0.05) with increasing dietary SID Thr:Lys. In Exp. 1, the SID Thr:Lys for gain-to-feed ratio (G:F) was optimized at 65%. In Exp. 2, the estimated optimal SID Thr:Lys for overall G:F was 66.5%. In conclusion, an average optimal SID Thr:Lys of 65 and 66.5% could be used to optimize feed efficiency for weaned pigs under clean and unclean sanitary conditions, respectively.http://www.sciencedirect.com/science/article/pii/S2405654515300378Threonine:lysine ratioSanitationWeaned pigsGrowth performance |
| spellingShingle | Balachandar Jayaraman John Htoo Charles Martin Nyachoti Effects of dietary threonine:lysine ratioes and sanitary conditions on performance, plasma urea nitrogen, plasma-free threonine and lysine of weaned pigs Animal Nutrition Threonine:lysine ratio Sanitation Weaned pigs Growth performance |
| title | Effects of dietary threonine:lysine ratioes and sanitary conditions on performance, plasma urea nitrogen, plasma-free threonine and lysine of weaned pigs |
| title_full | Effects of dietary threonine:lysine ratioes and sanitary conditions on performance, plasma urea nitrogen, plasma-free threonine and lysine of weaned pigs |
| title_fullStr | Effects of dietary threonine:lysine ratioes and sanitary conditions on performance, plasma urea nitrogen, plasma-free threonine and lysine of weaned pigs |
| title_full_unstemmed | Effects of dietary threonine:lysine ratioes and sanitary conditions on performance, plasma urea nitrogen, plasma-free threonine and lysine of weaned pigs |
| title_short | Effects of dietary threonine:lysine ratioes and sanitary conditions on performance, plasma urea nitrogen, plasma-free threonine and lysine of weaned pigs |
| title_sort | effects of dietary threonine lysine ratioes and sanitary conditions on performance plasma urea nitrogen plasma free threonine and lysine of weaned pigs |
| topic | Threonine:lysine ratio Sanitation Weaned pigs Growth performance |
| url | http://www.sciencedirect.com/science/article/pii/S2405654515300378 |
| work_keys_str_mv | AT balachandarjayaraman effectsofdietarythreoninelysineratioesandsanitaryconditionsonperformanceplasmaureanitrogenplasmafreethreonineandlysineofweanedpigs AT johnhtoo effectsofdietarythreoninelysineratioesandsanitaryconditionsonperformanceplasmaureanitrogenplasmafreethreonineandlysineofweanedpigs AT charlesmartinnyachoti effectsofdietarythreoninelysineratioesandsanitaryconditionsonperformanceplasmaureanitrogenplasmafreethreonineandlysineofweanedpigs |