Optimal sulfur amino acid to lysine ratio for post weaning piglets reared under clean or unclean sanitary conditions
| Autor: | Martin Nyachoti, Alemu Regassa, John K Htoo, Roselyn Kahindi |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
0301 basic medicine
animal diseases Lysine Amino acid ratios 03 medical and health sciences chemistry.chemical_compound Methionine Animal science Food Animals Gut morphology Response criteria lcsh:SF1-1100 2. Zero hunger Sanitary condition Chromatography Sulfur Amino Acids 0402 animal and dairy science 04 agricultural and veterinary sciences Plasma urea 040201 dairy & animal science Special section: Nutrition and gut health in swine 030104 developmental biology chemistry Post weaning Pigs Animal Science and Zoology lcsh:Animal culture |
| Zdroj: | Animal Nutrition Animal Nutrition, Vol 3, Iss 4, Pp 380-385 (2017) |
| ISSN: | 2405-6545 |
| DOI: | 10.1016/j.aninu.2017.08.004 |
| Popis: | Two 14-day experiments, each with 90 (Duroc × [Yorkshire × Landrace]; 7.3 ± 0.6 kg) piglets, were conducted to determine the optimum sulfur amino acid (SAA) to lysine (Lys) ratio (SAA:Lys) for piglets when reared under clean or unclean sanitary conditions using performance and non-performance response criteria. Piglets were randomly assigned to the following dietary treatments. The basal diet contained 1.18% standardized ileal digestible (SID) Lys, and the SAA:Lys was 52%. In diets 2 to 5, the basal diet was supplemented with 4 graded levels of dl-Met to make SAA:Lys of 56%, 60%, 64% and 68%. In Exp. 1, piglets were housed in disinfected clean room. In Exp. 2, piglets were housed in a room previously occupied by other pigs and was not disinfected. On the last day, blood was collected to measure plasma urea nitrogen (PUN) and one pig per pen was euthanized to collect jejunal tissue to measure villus height (VH), crypt depth (CD), and VH:CD. In Exp. 1, increasing SAA:Lys linearly and quadratically increased VH and VH:CD (P |
| Databáze: | OpenAIRE |
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