Effect of dietary protein level and kind of carbohydrate on growth and selected pathological and biochemical parameters in female BHE rats

Lakshmanan, Florence Lazicki; Howe, Juliette C.; Barnes, Rhoda E.

doi:10.1016/s0271-5317(83)80100-6

Cited by 4 publications

(1 citation statement)

References 21 publications

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“…With a normal protein diet there was no difference in the weight of young between the groups. This confirms former results concerning methionine supplementation (Leclerc, 1980) and the nature of dietary carbohydrates (Bouillon and Berdanier, 1983;Lakshmanan et aL, 1983). However, between days 7 and 14 of lactation, the young of group 20SM showed a more rapid growth rate, probably due to the higher feed intake of the dam from this group.…”

Section: Methodssupporting

confidence: 89%

Effects of protein level, methionine supplementation and carbohydrate type of the diet on liver lipid and plasma free threonine contents in the lactating rat

Leclerc¹,

Chanussot²,

Miller³

et al. 1989

Reprod. Nutr. Dévelop.

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Summary -Eight groups of 13-15 female rats were fed purified diets after littering. Four groups received a low protein (8% casein) diet (groups 8) and the others, a normal protein (20% casein) diet (groups 20). Carbohydrates were supplied either as starch (groups S) or as starch plus 40% fructose (groups F). Half the animals received a 0.4% methionine supplementation (groups M). Four or five dams per group were sacrificed on days 2, 7 and 14 after littering.The diet intake was increased by methionine supplementation, substitution of starch for fructose and increased protein content, mainly during the second week of lactation. This influenced weight variation of the dams and litter growth.On all days, the plasma levels of cholesterol esters, triglycerides and phospholipids were positively correlated with the dietary protein level.On days 7 and 14, the liver neutral lipid content was increased in rats fed the low protein diets supplemented with methionine (groups 8SM and 8FM) and the normal protein diets containing 40% fructosq (groups 20F and 20FM).The plasma free threonine content was positively correlated with the protein level in the diet. On day 14, rats fed a low protein diet had a threonine deficiency, except those in groups 8S and 8F. The plasma free threonine content of these rats was not reduced, possibly due to an impaired utilization of this amino acid.The liver lipidosis observed during lactation, in contrast to that observed during growth with a low protein diet, was not due to a threonine deficiency.

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Section: Methodssupporting

confidence: 89%