Retrograde movement of urine into the gut of salt water acclimated Mallards (Anas platyrhynchos)

1999 ◽  
Vol 77 (2) ◽  
pp. 342-346 ◽  
Author(s):  
M R Hughes ◽  
D C Bennett ◽  
T M Sullivan ◽  
H Hwang
Keyword(s):  
Drinking Water ◽  
Polyethylene Glycol ◽  
Water Intake ◽  
Anas Platyrhynchos ◽  
Salt Water ◽  
Tap Water ◽  
Salt Glands ◽  
Fluid Content ◽  
Intravenous Injections ◽  
Sodium And Potassium

The influence of sex and salt-water intake on retrograde movement of urine into the hindgut was examined in captive adult wild Mallards (Anas platyrhynchos). Ducks were given intravenous injections of tritiated polyethylene glycol (3H-PEG) and killed 3 h later. The fluid content of each gut segment and its concentrations of 3H-PEG, sodium, and potassium were determined. Retrograde movement of urine into each gut segment was estimated from the quantity of 3H-PEG recovered there. In both ducks that drank tap water and those that drank saline, about 20% of the urine was moved into the hindgut, two-thirds of this into the ceca. Males deposited more urine in the ceca and reabsorbed more water from this urine than did females (P < 0.01). We conclude that retrograde movement of urine into the hindgut was unaffected by the salinity of drinking water and was greater in males than in females. Reabsorption of urinary sodium and water in the hindgut, particularly the ceca, may play an important role in osmoregulation in birds with salt glands.

Effect of saline drinking water on the size and water content of the gut and other organs of male and female mallards

2002 ◽  
Vol 80 (1) ◽  
pp. 70-76 ◽  
Author(s):  
M R Hughes ◽  
D C Bennett ◽  
T M Sullivan
Keyword(s):  
Drinking Water ◽  
Water Content ◽  
Water Transport ◽  
Anas Platyrhynchos ◽  
Salt Glands ◽  
Male And Female ◽  
Organ Mass ◽  
Hind Gut

Ducks absorb imbibed Na+ and water in the anterior gut and reabsorb Na+ and water from urine refluxed into the hind gut. In Mallards (Anas platyrhynchos) this process is sexually disparate: males reflux and reabsorb more water, mainly in the ceca. We examined the effect of saline acclimation on the size of Mallard organs, especially the gut and other osmoregulatory organs (kidneys, salt glands) in both sexes. We tested and accept two hypotheses: (1) saline increases the mass of the Mallard hind gut and other osmoregulatory organs and (2) saline has a greater effect on the organs of males. Drinking saline did not affect the mass of body, kidney, heart, or liver, but increased the mass of the salt glands, ileum, and ceca. Increases in organ mass were greater in males than in females. Saline acclimation increased the length of the jejunum only in males and decreased the length of the esophagus and the length and mass of the proventriculus only in females. Our data suggest that the upper and lower gut segments may play somewhat different roles in ion and water transport in the two sexes.

scholarly journals Change in methodology for collection of drinking water intake in What We Eat in America/National Health and Nutrition Examination Survey: implications for analysis

2012 ◽  
Vol 15 (7) ◽  
pp. 1190-1195 ◽  
Author(s):  
Rhonda S Sebastian ◽  
Cecilia Wilkinson Enns ◽  
Joseph D Goldman ◽  
Alanna J Moshfegh
Keyword(s):  
Drinking Water ◽  
Water Intake ◽  
National Health ◽  
Tap Water ◽  
Lower Percentage ◽  
Nutrition Examination Survey ◽  
Cross Sectional ◽  
Health And Nutrition ◽  
The Usa ◽  
Gender Groups

AbstractObjectiveTo provide updated estimates of drinking water intake (total, tap, plain bottled) for groups aged ≥1 year in the USA and to determine whether intakes collected in 2005–2006 using the Automated Multiple-Pass Method for the 24 h recall differ from intakes collected in 2003–2004 via post-recall food-frequency type questions.DesignCross-sectional, observational study.SettingWhat We Eat in America (WWEIA), the dietary intake component of the US National Health and Nutrition Examination Survey (NHANES).SubjectsIndividuals aged ≥1 year in 2003–2004 (n 8249) and 2005–2006 (n 8437) with one complete 24 h recall.ResultsThe estimate for the percentage of individuals who reported total drinking water in 2005–2006 was significantly (P < 0·0000) smaller (76·9 %) than that for 2003–2004 (87·1 %), attributable to a lower percentage reporting tap water (54·1 % in 2005–2006 v. 67·0 % in 2003–2004; P = 0·0001). Estimates of mean tap water intake differed between the survey cycles for men aged ≥71 years.ConclusionsSurvey variables must be examined before combining or comparing data from multiple WWEIA/NHANES release cycles. For at least some age/gender groups, drinking water intake data from NHANES cycles prior to 2005–2006 should not be considered comparable to more recent data.

scholarly journals Perceptions of drinking water safety and their associations with plain water intake among US Hispanic adults

2019 ◽  
Vol 17 (4) ◽  
pp. 587-596 ◽  
Author(s):  
Sohyun Park ◽  
Stephen Onufrak ◽  
Anisha Patel ◽  
Joseph R. Sharkey ◽  
Heidi M. Blanck
Keyword(s):  
Drinking Water ◽  
Water Intake ◽  
Multinomial Logistic Regression ◽  
Tap Water ◽  
Bottled Water ◽  
Plain Water ◽  
Water Safety ◽  
Drinking Water Safety ◽  
Hispanic Adults ◽  
Water Perceptions

Abstract We described sociodemographic differences in perceptions of drinking water safety and examined associations between perceptions and plain water intake. We used the 2015 Estilos survey of 1,000 US Hispanic adults conducted in both Spanish and English. Outcome was water intake. Exposures were the level of agreement about water perceptions (My tap water is safe to drink; Community tap water is safe to drink; Bottled water is safer; I would buy less bottled water if my tap water was safe). Covariates were sociodemographics, region, Hispanic heritage, and acculturation. We used chi-square tests and multinomial logistic regression to examine associations of water perceptions and intake. Overall, 24% of Hispanic adults consumed water ≤1 time/day. Although 34% disagreed their home tap water was safe to drink, and 41% disagreed their community tap water was safe to drink, 65% agreed bottled water is safer than tap water, and 69% agreed they would buy less bottled water if they knew their tap water was safe. Perceptions differed by some covariates but were not significantly associated with plain water intake. In conclusion, negative perceptions of tap water were common among US Hispanic adults, which can inform efforts to increase awareness about safe public water systems.

EFFECT OF DIETARY EDTA ON THE ABILITY OF CHICKS TO TOLERATE SODIUM CHLORIDE IN THE WATER

1971 ◽  
Vol 51 (3) ◽  
pp. 633-637
Author(s):  
T. K. J. COWAN ◽  
G. D. PHILLIPS ◽  
D. B. BRAGG
Keyword(s):  
Drinking Water ◽  
Weight Gain ◽  
Sodium Chloride ◽  
Salt Water ◽  
Tap Water ◽  
Block Design ◽  
High Salt ◽  
Control Group ◽  
Plasma Sodium ◽  
Broiler Chicks

Broiler chicks, allocated in a randomized block design, were fed four diets containing ethylene diamine tetraacetic acid (EDTA) at 0, 0.1, 0.2 and 0.4% of the diet and drinking water with a high salt concentration (6000 ppm). A control group received tap water and the EDTA-free diet. The addition of 6000 ppm NaCl in the drinking water had no effect on weight gain or feed conversion. Similarly, the inclusion of up to 0.4% EDTA in the feed had no adverse effect on weight gain. Analyses of packed-cell volume (PCV) and plasma sodium, chloride and calcium concentrations showed no changes as a result of treatment. Water consumption almost doubled for the chicks subjected to high salt water regimens compared with the control. Two groups of chicks received the EDTA-free diet, and significantly (P < 0.10) higher mortality was found for the group on the salt water compared with the tap water controls. The mortality in the former was also significantly (P < 0.10) higher than for the group receiving 0.2% EDTA in the diet and salt water. The chicks on the 0.4% EDTA diet had significantly (P < 0.05) higher mortality than control chicks on tap water and those chicks receiving salt water and diets containing 0.1% and 0.2% EDTA. Postmortem examination indicated that ascites and widespread edema were the causes of death in chicks that drank salt water and consumed diets containing no EDTA or 0.4% EDTA. The death of chicks on treatments that resulted in low mortality rates was not attributable to ascites. The reason for the apparent beneficial effect of feeding 0.2% EDTA in the diet in conjunction with the salt water remains open to conjecture.

Sodium and potassium in spontaneously produced salt gland secretion and tears of ducks, Anas platyrhynchos, acclimated to fresh and saline waters

1969 ◽  
Vol 47 (6) ◽  
pp. 1133-1138 ◽  
Author(s):  
Maryanne Robinson Hughes ◽  
Frank E. Ruch Jr.
Keyword(s):  
Anas Platyrhynchos ◽  
Salt Gland ◽  
Gland Secretion ◽  
Domestic Duck ◽  
Salt Glands ◽  
Salt Gland Secretion ◽  
Harderian Glands ◽  
Nacl Concentration ◽  
Saline Waters ◽  
Sodium And Potassium

The spontaneously produced salt gland secretion (SGS) and tears of the domestic duck, Anas platyrhynchos, were analyzed for sodium (Na), potassium (K), and chloride (Cl) (Cl in SGS only). Acclimation to seawater did not enhance the concentrating ability of the salt glands. The NaCl concentration exceeded that of seawater by only a small margin. The tears of saline-acclimated birds contained less Na and more K than birds drinking water with low NaCl content. Salt stress significantly increased the weight of the salt glands and of the Harderian glands; the lacrymal glands were not affected. An estimation of the relative possible contribution of the cloacal fluid, SGS, and tears to cation excretion was made.

scholarly journals Drinking water consumption patterns in Sweden

2006 ◽  
Vol 4 (4) ◽  
pp. 511-522 ◽  
Author(s):  
Therese Westrell ◽  
Yvonne Andersson ◽  
Thor Axel Stenström
Keyword(s):  
Drinking Water ◽  
Water Intake ◽  
Water Consumption ◽  
Cold Water ◽  
Tap Water ◽  
Daily Consumption ◽  
Swedish Population ◽  
Waterborne Outbreak ◽  
Small Water ◽  
Consumption Data

Estimates on drinking water consumption are necessary in risk assessments on microbial hazards in drinking water. Large differences in consumption habits between countries have been reported. In order to establish estimates for the Swedish population, water consumption data from a waterborne outbreak investigation (157 people), a small water consumption study (75 people) and a large study on health and environmental factors (10,957 people) were analysed. A lognormal distribution for the daily direct/cold water intake in litres with μ=−0.299 and σ=0.570 was fitted to the quantitative data, representing the general population. The average daily consumption of tap water as plain drinking water and as heated tap water, e.g. in coffee and tea, was 0.86±0.48 l and 0.94±0.69 l, respectively. Women consumed more cold tap water than did men, while men appeared to have a higher consumption of heated tap water. Cold tap water intake was highest in the oldest age group, (≥70 years). The consumption of bottled water was very low (mean 0.06 l/d) when compared to other countries.

scholarly journals Is the default of 2 liters for daily per-capita water consumption appropriate? A nationwide survey reveals water intake in Japan

2018 ◽  
Vol 16 (4) ◽  
pp. 562-573 ◽  
Author(s):  
Koichi Ohno ◽  
Mari Asami ◽  
Yoshihiko Matsui
Keyword(s):  
Drinking Water ◽  
Water Intake ◽  
Japanese Population ◽  
Tap Water ◽  
Soft Drink ◽  
Nationwide Survey ◽  
Bottled Water ◽  
Risk Assessments ◽  
Intake Rate ◽  
Per Capita

Abstract Two liters per day is generally applied as the default drinking water intake rate for risk assessments, although evidence supporting this value is insufficient. This study aimed to reveal actual water intakes from tap water and other types of drinks, and to explore the relationships between these intakes. For this purpose, we conducted a nationwide Internet questionnaire survey. Tap water intake negatively correlated with bottled water and soft drink intakes, suggesting a mutually complementary relationship. We propose an index, potential Tap Water Intake (pTWI), calculated by adding soft drinks and bottled water to tap water intake. Mean per-capita tap water intake across the entire Japanese population was estimated at 1.28 L/d, whereas mean pTWI was estimated at 1.65 L/d. Two liters per day corresponds to the 88th percentile of tap water intake and to the 76th percentile of pTWI, and covers the intake of the majority of the population in Japan. This rate should continue being used as the default in the Japanese population, but the rate to cover the tap water intake of almost the entire population would be higher: it was &gt;2.5 L/d.

scholarly journals Assessing water intake of adults during consultation: the striking discrepancy between a prospective record, an open and a frequency question

2020 ◽  
Vol 79 (OCE2) ◽  
Author(s):  
Isabelle Guelinckx ◽  
Clémentine Morin ◽  
Luis A. Moreno ◽  
Stavros A. Kavouras ◽  
Homero Martinez ◽  
...  
Keyword(s):  
Health Care ◽  
Drinking Water ◽  
Water Intake ◽  
Health Care Professionals ◽  
Tap Water ◽  
Daily Intake ◽  
The Mean ◽  
Drinking Frequency ◽  
Open Question ◽  
Single Question

AbstractHealth care professionals often ask their patients questions about their water intake, or water drinking frequency. The aim of the present analysis was to compare 3 questions (prospective 7-day fluid record, an open question (OQ) and a frequency question (FQ)) used to record the volumes of water drank.8159 participants (18–65 years) from Argentina, Brazil, China, Indonesia, Mexico and Uruguay completed a validated 7-day fluid intake record. For each drinking event, the volume consumed was recorded. On day 8, participants answered the following questions: “On average, what is your daily intake of water? (Tap water, bottled still and/or sparkling water)” and “How often do you consume drinking water (tap water, bottled still and sparking water): at least once a day or several times a day?”.When asked about the amount of water consumed, 63–76% of participants in all countries, except for Uruguay and Indonesia, estimated their water intake to be 1–2L to 2–3 L/day, 75–88% of participants reported drinking less than 1L of water/day in the record. In Uruguay, 74% of participants reported in the OQ drinking less than 0.4 L/day and 8% drinking 2–3 L/day, while the 7-day record showed that 56% drank less than 0.4 L/day, 2% drank 2–3 L/day and 32% drank 0.4 L/day. In Indonesia, 17% of participants didn't know how much they drank when asked the OQ. Moreover, 7% estimated drinking ≥ 3 L/day when asked the OQ while only 21% recorded this amount. When comparing water intake reported through the FQ and the 7-day record, 34–75% of participants accurately reported drinking water at least once a day. Nevertheless, in Indonesia, where the mean water intake was high (2.16 L/day), only 1% of participants reported drinking water at least once a day but actually drank water less frequently. In the other countries, where the mean water intake was lower (0.49–0.76L/day in Uruguay and Brazil respectively), 20–42% of participants reported drinking water at least once a day but actually drank water less frequently.Despite recently recording their water intake for 7 days, it was still difficult for adults to estimate how much and how often they drank when asked a single question. These results suggest a lack of awareness in adults of frequency and volume of water intake and illustrate the need for quick, valid methods that health care professionals can use to assess water intake.

Relationship between availability of basic amenities and proportion of Slum population in Maharashtra

2020 ◽  
Vol 6 (11) ◽  
pp. 1343-1354
Author(s):  
Dr. Sakreen Hasan
Keyword(s):  
Drinking Water ◽  
Tap Water ◽  
Policy Implications ◽  
Class I ◽  
Urban Centers ◽  
The Sustainable Development ◽  
Closed Drainage ◽  
The People ◽  
Basic Infrastructure ◽  
Slum Population

The urban centers offering diverse employment opportunities and means of livelihood are the main centers of attraction for migration. But the availability of infrastructure is low to accommodate the invariably growing population. The access to basic amenities like electricity, drinking water, toilet facility, wastewater outlet and clean fuel are critical determinants of quality of urbanization. And if it lacks, then it would facilitates the growth of slum.  In this paper it being tried to capture the interdependent relationship between basic amenities and slum population residing in the class I towns in Maharashtra; largest slum populated state of India. As the slum is all about the situation or condition in which the people of medium and lower strata are living. A detailed analysis of proportion of slum population and availability of amenities which includes good housing condition, treated tap water as the source of drinking water, electricity as the source of lightning, households having latrine and bathing facility within the premises, waste water outlet connected to closed drainage, and households availing the banking facilities. This may be a limitation of the study that only these indicators have been taken to assess the availability of amenities and to calculate the amenity index of class I towns of the state of Maharashtra. To achieve the sustainable development goal (Sustainable cities and communities), we have to control the growth of slum population and to combat the formation of slum; we have to analyze the situation of basic infrastructure provided in urban centers. Amenities and slum population has policy implications as to reduce the slum population, provide basic amenities to the households which will improve their standard of living and ultimately lead to reduction in growth of slum and check the future slum formation.

ECOLOGICAL AND PHYSIOLOGICAL ASSESSMENT OF CHEMICAL COMPOSITION OF DRINKING TAP WATER IN KHANTY-MANSIYSK AND SALEKHARD

2020 ◽  
pp. 159-167
Author(s):  
V.V. Lapenko ◽  
L.N. Bikbulatova ◽  
E.M. Ternikova
Keyword(s):  
Drinking Water ◽  
Chemical Composition ◽  
Water Samples ◽  
Tap Water ◽  
Iron Concentration ◽  
Absorption Spectrometry ◽  
Northern Region ◽  
Transport Processes ◽  
Magnesium Concentration ◽  
Geochemical Environment

Water is very important for humans, as it is a solvent for metabolic products. Moreover, it is necessary for metabolism, biochemical and transport processes. The elemental status in persons depends on the geochemical environment and consumption of bioelements with food and water. The aim of the paper is to conduct a comprehensive assessment of chemical composition of drinking tap water in Khanty-Mansiysk and Salekhard. Materials and Methods. The chemical composition of 100 samples of drinking tap water was analyzed by atomic absorption spectrometry, spectrophotometry and capillary electrophoresis. All in all, there were 50 samples from Khanty-Mansiysk and 50 samples from Salekhard. The results were compared with Sanitary Rules and Norms 2.1.4.1074-01. Results. Drinking tap water in Salekhard contains a significantly higher concentration of iron, which is much above the maximum allowable concentration, if compared to water samples in Khanty-Mansiysk (p=0.03). In the cities under consideration, the water undergoes high-quality reagent-free treatment. However, the deterioration of the water supply networks in Salekhard is 3 times as high as in Khanty-Mansiysk. Calcium and magnesium concentration in water samples from Khanty-Mansiysk is 5.6 and 3.9 times lower than the MAC; in water samples from Salekhard calcium concentration is 6.3 (p=0.008) and magnesium concentration 4.6 (p<0.001) times lower than the MAC. Conclusion. The consumption of ultra-fresh drinking water leads to low intake of bioelements, which are a part of enzymes contributing to the human antioxidant defense and can result in manifestation of cardiovascular diseases. This is especially true for Salekhard with very soft drinking water and high iron concentration, which excess can exhibit prooxidant properties. Keywords: tap water, bioelements, northern region, antioxidants. Вода является важнейшим соединением для человека: необходима в качестве растворителя продуктов метаболизма и протекания обменных, биохимических и транспортных процессов. Элементный статус организма человека зависит от геохимического окружения и поступления биоэлементов с пищей и водой. Цель. Провести комплексную оценку химического состава водопроводной воды городов Ханты-Мансийск и Салехард. Материалы и методы. Методами атомно-абсорбционной спектрометрии, спектрофотометрии и капиллярного электрофореза проанализирован химический состав 100 проб водопроводной воды: по 50 из Ханты-Мансийска и Салехарда. Результаты сравнивали с СанПиН 2.1.4.1074-01. Результаты. В водопроводной воде Салехарда установлена превышающая ПДК и достоверно более высокая концентрация железа сравнительно с водой Ханты-Мансийска (р=0,03). При условии качественной безреагентной водоподготовки в изучаемых городах это обусловлено изношенностью водопроводных сетей в Салехарде, более чем в 3 раза превышающей этот показатель в Ханты-Мансийске. Концентрация кальция и магния в воде Ханты-Мансийска в 5,6 и 3,9 раза ниже ПДК; в воде Салехарда – в 6,3 (р=0,008) и 4,6 (р<0,001) раза ниже ПДК соответственно. Заключение. Употребление ультрапресной питьевой воды на фоне очень малого поступления с водой биоэлементов, входящих в состав ферментов антиоксидантной защиты организма человека, может привести к манифестации кардиоваскулярных заболеваний. Это особенно актуально для г. Салехарда с очень мягкой питьевой водой с повышенным содержанием железа, избыток которого может проявлять прооксидантные свойства. Ключевые слова: водопроводная вода, биоэлементы, северный регион, антиоксиданты.

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