منابع مشابه
Insights into the Nutritional Physiology of Nickel
Nickel (Ni) is essential for plants, yet its physiological role is poorly understood. Ni-deficient and Ni-sufficient pecan [Carya illinoinensis (Wangenh.) K. Koch] trees were compared regarding the impact of Ni nutritional status on reduced nitrogen (N) forms present in xylem sap at spring bud break. High performance liquid chromatography (HPLC) of xylem sap of Ni-sufficient trees found organic...
متن کاملPhysiology and Endocrinology: Nutritional Regulation of Reproduction
cass traits as barrows fed the C-SBM diet (P > 0.10). In Exp. 2, 60 barrows (initial and final BW of 74.6 and 104.5 kg, respectively) were used to estimate the dTrp requirement. The levels of dTrp used in Exp. 2 were 0.06, 0.08, 0.10, 0.12, or 0.14%. Response variables were growth performance, PUN concentrations, carcass traits, and pork quality. The dTrp requirement was estimated to be 0.102%....
متن کاملParasitoid and host nutritional physiology in behavioral ecology
Nutrient acquisition and allocation critically impacts the fitness of all organisms. However, distinguishing between competing hypotheses about metabolic strategies requires mechanistic details on the physiological requirements and constraints under which the organism exists. Parasitoids acquire nutrients during both their larval stage and as adults. In this chapter, we first explore difference...
متن کاملAge related changes in gut physiology and nutritional status.
Few gastrointestinal functions decline to an important extent as a result of old age alone and there is little clinical evidence that significant malnutrition occurs in any normal elderly person as a result of the aging process itself. Nevertheless, decreased gastrointestinal reserve makes older people highly sensitive to minor insults and decompensation can rapidly occur. Drugs appreciably aff...
متن کاملPhysiology and Endocrinology Symposium: Nutritional aspects of developing replacement heifers.
Studies in numerous species provide evidence that diet during development can mediate physiological changes necessary for puberty. In cattle, several studies have reported inverse correlations between postweaning growth rate and age at puberty and heifer pregnancy rates. Thus, postweaning growth rate was determined to be an important factor affecting age of puberty, which in turn influences pre...
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ژورنال
عنوان ژورنال: American Journal of Public Health
سال: 1912
ISSN: 0271-4353
DOI: 10.2105/ajph.2.12.1001