1979
DOI: 10.1002/dev.420120505
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The effects of protein malnutrition on the behavior of rats during the suckling period

Abstract: Observations of 2 groups of dams and their litters were made every 3 hr around the clock on Days 1-20 postpartum. The dams fed either an 8% or a 25% casein diet for 5 weeks before mating and during gestation and lactation. Dams on the low protein diet spent more time in the nest actively nursing their young than did high protein dams, and they exhibited no deficits in other maternal behaviors. Five of 11 kinds of behavior developed more slowly in the undernourished pups than in the well-nourished ones, but the… Show more

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Cited by 20 publications
(9 citation statements)
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References 22 publications
(9 reference statements)
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“…In line with previous reports (see Hall, 1979) this experiment shows that prior exposure to shape stimuli can subsequently facilitate the learning of a visual discrimination problem using the same stimuli. Here though, the timing of the exposure was unusual in that it was not continuous up to the start of discrimination training.…”
Section: Discussionsupporting
confidence: 89%
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“…In line with previous reports (see Hall, 1979) this experiment shows that prior exposure to shape stimuli can subsequently facilitate the learning of a visual discrimination problem using the same stimuli. Here though, the timing of the exposure was unusual in that it was not continuous up to the start of discrimination training.…”
Section: Discussionsupporting
confidence: 89%
“…In previous studies of exposure learning, exposure continued up to, or beyond the start of discrimination training (see Hall, 1979), and it was not known whether rats viewing the stimuli in early life and then tested much later would benefit from their experience. Therefore, some rats were given further brief exposures to the stimuli during the period of nutritional rehabilitation in the expectation of maintaining the effect of early exposure during that interval (cf.…”
mentioning
confidence: 97%
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“…These results parallel the findings of other recent studies of mammals. For example, the offspring of malnourished rats suck more than those of well-fed mothers (Hall, Leaky & Robertson, 1979). Similarly, calves born to farmed red deer grazing low quality hill pasture suck more frequently, despite higher rejection rates, than calves born to mothers on improved grass pasture (Loudon, McNeilly & Milne, 1983).…”
Section: Discussionmentioning
confidence: 99%
“…In domestic species, more milk in the mammary gland creates higher internal pressure, and offspring generally receive more milk per unit suckling time (Heald, 1985). In some species of mammals adult females in poor condition produce less milk, resulting in an inverse relationship between offspring suckling behavior and milk production (Hall et al, 1979;Louden et al, 1983;Mendl and Paul, 1989). Thus it seems plausible that better and/or more milk might reduce suckling time by chulengos, and it could explain the lower mean suckling time and mean number of suckling attempts/h of chulengos born in 1991.…”
Section: Yearly Variation In Maternal Expenditurementioning
confidence: 99%