Effect of water restriction on feeding and metabolism in dairy cows
We investigated how lactating cows are able to cope with a sustained water restriction. In experiment 1, body weight and meal patterns were recorded with ad libitum access to water (baseline) and during 8 days of 25 and 50% restriction of drinking water relative to ad libitum intake. In experiment 2, indirect calorimetry was combined with nitrogen and energy balance and plasma hormone and metabolite measurements to assess the effects of 50% water restriction on digestion and metabolism. In experiment 1, food intake and body weight declined during the first 3 days of water restriction depending on the restriction level and stabilized thereafter at a lower level. The daily food intake reduction with 50% water restriction was entirely due to a reduction of meal size. The size of the first meal on every day was markedly (>50%) reduced with 25 and 50% water restriction. In experiment 2, urea concentrations in milk and blood as well as plasma sodium and hematocrit were increased by 50% water restriction. Energy balance was not affected by 50% water restriction, but nitrogen balance became negative, because, relative to intake, nitrogen excretion via urine and milk was higher. The lower energy intake during 50% water restriction was compensated by a lower milk production, a higher digestibility of organic matter and energy, and, apparently, a more efficient energy use. Through these changes and a preserved water balance, the cows reached a new equilibrium at a lower water turnover level, which enabled them to cope with a sustained drinking water restriction of 50%.
| Medienart: |
Artikel |
|---|
| Erscheinungsjahr: |
2001 |
|---|---|
| Erschienen: |
2001 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:280 |
|---|---|
| Enthalten in: |
American journal of physiology. Regulatory, integrative and comparative physiology - 280(2001), 2 vom: 18. Feb., Seite R418-27 |
| Sprache: |
Englisch |
|---|
| Beteiligte Personen: |
Steiger Burgos, M [VerfasserIn] |
|---|
| Themen: |
142M471B3J |
|---|
| Anmerkungen: |
Date Completed 12.04.2001 Date Revised 30.09.2020 published: Print Citation Status MEDLINE |
|---|
| Förderinstitution / Projekttitel: |
|
|---|
| PPN (Katalog-ID): |
NLM111204135 |
|---|
| LEADER | 01000naa a22002652 4500 | ||
|---|---|---|---|
| 001 | NLM111204135 | ||
| 003 | DE-627 | ||
| 005 | 20231222155115.0 | ||
| 007 | tu | ||
| 008 | 231222s2001 xx ||||| 00| ||eng c | ||
| 028 | 5 | 2 | |a pubmed24n0371.xml |
| 035 | |a (DE-627)NLM111204135 | ||
| 035 | |a (NLM)11208570 | ||
| 040 | |a DE-627 |b ger |c DE-627 |e rakwb | ||
| 041 | |a eng | ||
| 100 | 1 | |a Steiger Burgos, M |e verfasserin |4 aut | |
| 245 | 1 | 0 | |a Effect of water restriction on feeding and metabolism in dairy cows |
| 264 | 1 | |c 2001 | |
| 336 | |a Text |b txt |2 rdacontent | ||
| 337 | |a ohne Hilfsmittel zu benutzen |b n |2 rdamedia | ||
| 338 | |a Band |b nc |2 rdacarrier | ||
| 500 | |a Date Completed 12.04.2001 | ||
| 500 | |a Date Revised 30.09.2020 | ||
| 500 | |a published: Print | ||
| 500 | |a Citation Status MEDLINE | ||
| 520 | |a We investigated how lactating cows are able to cope with a sustained water restriction. In experiment 1, body weight and meal patterns were recorded with ad libitum access to water (baseline) and during 8 days of 25 and 50% restriction of drinking water relative to ad libitum intake. In experiment 2, indirect calorimetry was combined with nitrogen and energy balance and plasma hormone and metabolite measurements to assess the effects of 50% water restriction on digestion and metabolism. In experiment 1, food intake and body weight declined during the first 3 days of water restriction depending on the restriction level and stabilized thereafter at a lower level. The daily food intake reduction with 50% water restriction was entirely due to a reduction of meal size. The size of the first meal on every day was markedly (>50%) reduced with 25 and 50% water restriction. In experiment 2, urea concentrations in milk and blood as well as plasma sodium and hematocrit were increased by 50% water restriction. Energy balance was not affected by 50% water restriction, but nitrogen balance became negative, because, relative to intake, nitrogen excretion via urine and milk was higher. The lower energy intake during 50% water restriction was compensated by a lower milk production, a higher digestibility of organic matter and energy, and, apparently, a more efficient energy use. Through these changes and a preserved water balance, the cows reached a new equilibrium at a lower water turnover level, which enabled them to cope with a sustained drinking water restriction of 50% | ||
| 650 | 4 | |a Journal Article | |
| 650 | 7 | |a Carbon Dioxide |2 NLM | |
| 650 | 7 | |a 142M471B3J |2 NLM | |
| 650 | 7 | |a Nitrogen |2 NLM | |
| 650 | 7 | |a N762921K75 |2 NLM | |
| 650 | 7 | |a Methane |2 NLM | |
| 650 | 7 | |a OP0UW79H66 |2 NLM | |
| 700 | 1 | |a Senn, M |e verfasserin |4 aut | |
| 700 | 1 | |a Sutter, F |e verfasserin |4 aut | |
| 700 | 1 | |a Kreuzer, M |e verfasserin |4 aut | |
| 700 | 1 | |a Langhans, W |e verfasserin |4 aut | |
| 773 | 0 | 8 | |i Enthalten in |t American journal of physiology. Regulatory, integrative and comparative physiology |d 2000 |g 280(2001), 2 vom: 18. Feb., Seite R418-27 |w (DE-627)NLM105735809 |x 1522-1490 |7 nnns |
| 773 | 1 | 8 | |g volume:280 |g year:2001 |g number:2 |g day:18 |g month:02 |g pages:R418-27 |
| 912 | |a GBV_USEFLAG_A | ||
| 912 | |a GBV_NLM | ||
| 951 | |a AR | ||
| 952 | |d 280 |j 2001 |e 2 |b 18 |c 02 |h R418-27 | ||