Standardized ileal digestible tryptophan to lysine ratios affect performance and regulate intestinal mRNA expression of amino acid transporters in weaning pigs fed a low crude protein diet
| Autor: | Mao Pei, Yanzhi Zhu, Zhao Furong, Wenfeng Ma, Shihai Zhang, Zhanbin Wang, Liang Guo |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
chemistry.chemical_classification
0303 health sciences 030309 nutrition & dietetics Chemistry Lysine 0402 animal and dairy science Tryptophan Transporter 04 agricultural and veterinary sciences 040201 dairy & animal science Amino acid Serine 03 medical and health sciences Animal science Weaning Animal Science and Zoology Leucine Isoleucine |
| Zdroj: | Animal Feed Science and Technology. 275:114857 |
| ISSN: | 0377-8401 |
| DOI: | 10.1016/j.anifeedsci.2021.114857 |
| Popis: | The objective of this study was to estimate the effect of standardized ileal digestible (SID) tryptophan (Trp) to lysine (Lys) ratios on growth performance and jejunal expression of amino acid transporters in weaning pigs. A total of 240 hybrid [(Duroc, male) x (Large White x Landrace, female)] piglets (6.52 ± 0.42 kg) were used in a 28-day growth trial and randomly allotted to one of four diets providing SID Trp to Lys ratios of 0.15, 0.18, 0.21, or 0.24 and were allocated in 6 pens per treatment with 10 pigs per pen. The average daily gain (ADG), average daily feed intake (ADFI), and serum levels of Trp, serine, isoleucine and leucine in pigs significantly increased when the SID Trp to Lys ratios increased from 0.15 to 0.18, 0.21, or 0.24 (P |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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