PMID- 7295024
OWN - NLM
STAT- MEDLINE
DCOM- 19811221
LR  - 20190920
IS  - 0003-942X (Print)
IS  - 0003-942X (Linking)
VI  - 31
IP  - 7-8
DP  - 1981 Jul
TI  - [Concentration of urea in blood, a parameter for the assessment of protein 
      metabolism of pregnant sows. 1. Development of the concentration of urea in blood 
      after the intake of proteins and its relation to N-excretion in urine].
PG  - 471-9
AB  - After feeding a ration rich in protein and subsequent N-free feeding of 6 served 
      gilts provided with intravenous permanent catheters and bladder catheters, the 
      change of the urea concentration in the blood (UCB) and the N-excretion in urine 
      were investigated. UCB increased during the first few hours after the intake of 
      the protein containing ration, reached its maximum after 4 hours an 38 minutes 
      and then decreased continuously. The maximum of the hourly N-excretion in urine 
      was ascertained after 9 hours and 46 minutes. 60 hours after the protein intake 
      UCB as well as N-excretion in urine reached an average minimal level of 10.5 mg 
      urea/100 ml blood serum resp. 0.57 g N/hour. In a further experiment with four 
      served gilts the close correlation between UCB and N-excretion in urine was 
      confirmed after feeding 4 different protein levels. Blood sampling at the moment 
      of feeding resulted in lower UCB values and smaller dispersion (d% = 5.9) in 
      comparison to blood sampling 6 hours after feeding (d% = 12.2). The relation 
      between UCB and N-excretion in urine however was lower at the moment of feed 
      intake (r = 0.949 in contrast to r = 0.987). Under consideration of the maximum 
      UCB, blood sampling for the determination of the UCB for the purpose of 
      characterising N-excretion in urine and protein utilisation between 4 and 5 hours 
      after feeding is recommended.
FAU - Herrmann, U
AU  - Herrmann U
FAU - Schneider, R
AU  - Schneider R
LA  - ger
PT  - English Abstract
PT  - Journal Article
TT  - Die Blutharnstoffkonzentration, ein Parameter zur Beurteilung des 
      Proteinstoffwechsels bei tragenden Sauen. 1. Mitteilung. Verlauf der 
      Blutharnstoffkonzentration nach der Proteinaufnahme sowie die Beziehungen zur 
      Harn-N-Ausscheidung.
PL  - England
TA  - Arch Tierernahr
JT  - Archiv fur Tierernahrung
JID - 0217641
RN  - 0 (Dietary Proteins)
RN  - 8W8T17847W (Urea)
RN  - N762921K75 (Nitrogen)
SB  - IM
MH  - Animals
MH  - Dietary Proteins/*metabolism
MH  - Female
MH  - Kinetics
MH  - Nitrogen/urine
MH  - Pregnancy
MH  - *Pregnancy, Animal
MH  - Swine/*physiology
MH  - Urea/*blood
EDAT- 1981/07/01 00:00
MHDA- 1981/07/01 00:01
CRDT- 1981/07/01 00:00
PHST- 1981/07/01 00:00 [pubmed]
PHST- 1981/07/01 00:01 [medline]
PHST- 1981/07/01 00:00 [entrez]
AID - 10.1080/17450398109426860 [doi]
PST - ppublish
SO  - Arch Tierernahr. 1981 Jul;31(7-8):471-9. doi: 10.1080/17450398109426860.