Net absorption and liver metabolism of amino acids and heat production of portal-drained viscera and liver in multiparous sows during transition and lactation
| Autor: | Peter Kappel Theil, Lianqiang Che, Liang Hu, De Wu, Niels Bastian Kristensen |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
0301 basic medicine
Lysine Biochemistry Net portal flux 03 medical and health sciences chemistry.chemical_compound Nutrient Animal science Lactation medicine lcsh:SF1-1100 chemistry.chemical_classification lcsh:Veterinary medicine Research 0402 animal and dairy science 04 agricultural and veterinary sciences 040201 dairy & animal science Amino acid Net hepatic flux 030104 developmental biology medicine.anatomical_structure Liver metabolism chemistry Sow Urea lcsh:SF600-1100 Gestation Animal Science and Zoology lcsh:Animal culture Sampling time Heat production Food Science Biotechnology |
| Zdroj: | Journal of Animal Science and Biotechnology Journal of Animal Science and Biotechnology, Vol 11, Iss 1, Pp 1-16 (2020) Hu, L, Kristensen, N B, Che, L, Wu, D & Theil, P K 2020, ' Net absorption and liver metabolism of amino acids and heat production of portal-drained viscera and liver in multiparous sows during transition and lactation ', Journal of Animal Science and Biotechnology, vol. 11, no. 1, 5 . https://doi.org/10.1186/s40104-019-0417-7 |
| ISSN: | 2049-1891 |
| DOI: | 10.1186/s40104-019-0417-7 |
| Popis: | Background Determination of nutrient requirements in the late gestating and lactating sows is essential to optimize sow productivity. The objectives of the present study were to quantify amino acid (AA) fluxes and heat production across portal-drained viscera (PDV) and liver in multiparous sows during transition and lactation. Methods Eight second parity sows were fitted with indwelling catheters in the femoral artery and in the mesenteric, portal and hepatic veins. Eight hourly sets of blood samples were taken starting 0.5 h before feeding at − 10, − 3, + 3, and + 17 d in milk (DIM). Blood gases, plasma metabolites and apparent total tract digestibility (ATTD) of nutrients were measured. Results Feed intake, the ATTD of DM, energy, nitrogen, fat and crude fiber changed with DIM (P 2, and urea, all net portal fluxes were positive, and all were affected by DIM (P P Conclusion The net portal recovery was substantially lower for Met, Thr, and His than the remaining essential AA. Hepatic AA oxidation peaks 0.5 to 2.5 h after feeding. The heat production in PDV and liver was approximately two-fold higher at peak lactation compared to other stages. The study suggests that lysine was the limiting AA in peak lactation but not in early lactation. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full text from SpringerLink