Net absorption and liver metabolism of amino acids and heat production of portaldrained viscera and liver in multiparous sows during transition and lactation

Liang Hu; Niels Bastian Kristensen; Lianqiang Che; De Wu; Peter Kappel Theil

首页> 中文期刊> 《畜牧与生物技术杂志：英文版》 >Net absorption and liver metabolism of amino acids and heat production of portaldrained viscera and liver in multiparous sows during transition and lactation

Net absorption and liver metabolism of amino acids and heat production of portaldrained viscera and liver in multiparous sows during transition and lactation

开具论文收录证明 >>

期刊封面封底目录下载 >>

文献代查 >>

页面导航

摘要
著录项
相关主题

摘要

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<0.001).Except for Glu,O2,and urea,all net portal fluxes were positive,and all were affected by DIM(P<0.05)and by sampling time(P<0.01).Compared with pre partum levels,net portal uptake of AA was 3-63%lower at+3 DIM but 40-100%higher at+17 DIM.Net portal fluxes of AA peaked at 1.5 to 2.5 h after feeding except for Glu,and they were positively correlated with changes in sow feed intake across DIM.The net portal recovery was low for Met(49%),Thr(54%),and His(54%)and high for the remaining essential AA(63-69%)and none of them differed across DIM.Net hepatic uptake(i.e.hepatic oxidation)of Lys,Thr,Ile,Leu and Phe peaked at 0.5 to 2.5 h after feeding,whereas uptake of Trp,Val,and His was constant,while that of Met was close to zero.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.

著录项

来源
《畜牧与生物技术杂志：英文版》 |2020年第2期|P.424-439|共16页
作者
Liang Hu; Niels Bastian Kristensen; Lianqiang Che; De Wu; Peter Kappel Theil;
展开▼
作者单位

Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education Institute of Animal Nutrition Sichuan Agricultural University No.211 Huimin Road Wenjiang District Chengdu Sichuan 611130 People’s Republic of ChinaDepartment of Animal Science Faculty of Science and Technology Aarhus University DK-8830 Tjele Denmark;

Department of Animal Science Faculty of Science and Technology Aarhus University DK-8830 Tjele DenmarkPresent address:SEGES Danish Pig Research Centre DK-1609 Copenhagen Denmark;

Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education Institute of Animal Nutrition Sichuan Agricultural University No.211 Huimin Road Wenjiang District Chengdu Sichuan 611130 People’s Republic of China;

Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education Institute of Animal Nutrition Sichuan Agricultural University No.211 Huimin Road Wenjiang District Chengdu Sichuan 611130 People’s Republic of China;

Department of Animal Science Faculty of Science and Technology Aarhus University DK-8830 Tjele Denmark;

展开▼
原文格式 PDF
正文语种 chi
中图分类中国工业经济;
关键词
Gestation; Heat production; Lactation; Net hepatic flux; Net portal flux; Sow;

机译：妊娠;热量生产;哺乳期;净肝脏助焊剂;净门禁;播种;

Net absorption and liver metabolism of amino acids and heat production of portaldrained viscera and liver in multiparous sows during transition and lactation

摘要

著录项

相关主题

期刊订阅