Self-Selection of Salt by Gilts During Pregnancy and Lactation

Friend, D. W.; Wolynetz, M. S.

doi:10.4141/cjas81-051

Cited by 8 publications

(6 citation statements)

References 13 publications

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“…Water consumption of lactating sows is estimated to be at least 40 YO higher than that of non-lactating sows, though it is affected by many factors such as stage of lactation (colostral period or advanced lactation; Fraser & Phillips, 1989), feed intake (Friend, 1971 ;Bauer, 1982;Gill et al 1988;Gill, 1989), dietary fibre content (Zoiopoulos et al 1982), NaCl intake (Friend & Wolynetz, 1981), environmental temperature (Bauer, 1982;Kuperus, 1988), type of water dispenser (Diblik, 1986), litter size and hence the piglet's presumed demand for milk (Lightfoot & Armsby, 1984) and health status (Madec et al 1986).…”

Section: Lactating Sowsmentioning

confidence: 99%

See 1 more Smart Citation

Water in Pig Nutrition: Physiology, Allowances and Environmental Implications

Mroz¹,

Jongbloed²,

Lenis³

et al. 1995

Nutr. Res. Rev.

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Section: Lactating Sowsmentioning

confidence: 99%

“…Various nutritional factors affect the rate of water consumption and therefore urine production by pigs (Wahlstrom et al 1970;Hagsten & Perry, 1976;Friend & Wolynetz, 1981;Close et al 1983;Patience et al 1987;Pfeiffer, 1991).…”

Section: Introductionmentioning

confidence: 99%

Water in Pig Nutrition: Physiology, Allowances and Environmental Implications

Mroz¹,

Jongbloed²,

Lenis³

et al. 1995

Nutr. Res. Rev.

View full text Add to dashboard Cite

“…Another nutrient that has particularly profound effects on reproductive success is sodium [8][9][10][11]. In order to ensure sufficient sodium is acquired to maximize reproductive output, many species, including humans, show a specific appetite for sodium during the reproductive period [12][13][14][15][16]. However, the neuronal mechanisms through which animals' reproductive states drive this salt appetite remain obscure.…”

Section: Introductionmentioning

confidence: 99%

Postmating Circuitry Modulates Salt Taste Processing to Increase Reproductive Output in Drosophila

2015

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To optimize survival and reproduction, animals must match their nutrient intake to their current needs. Reproduction profoundly changes nutritional requirements, with many species showing an appetite for sodium during reproductive periods. How this internal state modifies neuronal information processing to ensure homeostasis is not understood. Here, we show that dietary sodium levels positively affect reproductive output in Drosophila melanogaster; to satisfy this requirement, females develop a strong, specific appetite for sodium following mating. We show that mating modulates gustatory processing to increase the probability of initiating feeding on salt. This postmating effect is not due to salt depletion by egg production, since abolishing egg production leaves the sodium appetite intact. Rather, the salt appetite is induced need-independently by male-derived Sex Peptide acting on the Sex Peptide Receptor in female reproductive tract neurons. We further demonstrate that postmating appetites for both salt and yeast are driven by the resultant silencing of downstream SAG neurons. Surprisingly, unlike the postmating yeast appetite, the salt appetite does not require octopamine, suggesting a divergence in the postmating circuitry. These findings demonstrate that the postmating circuit supports reproduction by increasing the palatability of specific nutrients. Such a feedforward regulation of sensory processing may represent a common mechanism through which reproductive state-sensitive circuits modify complex behaviors across species.

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“…A specific appetite for sodium increases during the reproductive and lactation phases. [64][65][66][67] For the reproductive success, sodium provides ions required for nutrient balance in newly formed eggs or an increase in total food intake which ultimately contributes to egg production. 68,69 A study conducted by Walker et al 70 has provided insights into the physiological regulation of salt intake.…”

Section: Post Mating Circuitmentioning

confidence: 99%

Salt an Essential Nutrient: Advances in Understanding Salt Taste Detection Using Drosophila as a Model System

2018

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Taste modalities are conserved in insects and mammals. Sweet gustatory signals evoke attractive behaviors while bitter gustatory information drive aversive behaviors. Salt (NaCl) is an essential nutrient required for various physiological processes, including electrolyte homeostasis, neuronal activity, nutrient absorption, and muscle contraction. Not only mammals, even in Drosophila melanogaster, the detection of NaCl induces two different behaviors: Low concentrations of NaCl act as an attractant, whereas high concentrations act as repellant. The fruit fly is an excellent model system for studying the underlying mechanisms of salt taste due to its relatively simple neuroanatomical organization of the brain and peripheral taste system, the availability of powerful genetic tools and transgenic strains. In this review, we have revisited the literature and the information provided by various laboratories using invertebrate model system Drosophila that has helped us to understand NaCl salt taste so far. We hope that this compiled information from Drosophila will be of general significance and interest for forthcoming studies of the structure, function, and behavioral role of NaCl-sensitive (low and high concentrations) gustatory circuitry for understanding NaCl salt taste in all animals.

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Self-Selection of Salt by Gilts During Pregnancy and Lactation

Abstract: For personal use only.

Cited by 8 publications

References 13 publications

Water in Pig Nutrition: Physiology, Allowances and Environmental Implications

Water in Pig Nutrition: Physiology, Allowances and Environmental Implications

Postmating Circuitry Modulates Salt Taste Processing to Increase Reproductive Output in Drosophila

Salt an Essential Nutrient: Advances in Understanding Salt Taste Detection Using Drosophila as a Model System

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