informe del desarrollo teórico-experimental de metodologías regidas por la legislación que complementan el análisis proximal de la calidad de una barra. Descripción: análisis proximal por weende y van soest. instancia, mediante el análisis proximal o de Weende. El análisis . análisis de fibra dietética reportados en la presente tabla de composición de alimento.

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Revista Chapingo Serie Ciencias Forestales y del Ambiente

Gastrointestinal and metabolic effects of feeding schedule on voluntary feed intake and growth of European eel, Anguilla anguilla. Gastrointestinal and metabolic influences on short- and medium-term control of voluntary feed intake of European eel were investigated for groups of fish fed at different feeding schedules: Feedinggrowth and metabolism of the marine heterotrophic dinoflagellate Gyrodinium dominans.

Gross growth efficiencies GGEsdetermined for G.

Effects of Ala-Gln feeding strategies on growthmetabolismand crowding stress resistance of juvenile Cyprinus carpio var. The present study was conducted to evaluate the effects of different L-alanyl-l-glutamine Ala-Gln feeding strategies on the growth performance, metabolism and crowding stress resistance related parameters in juvenile Jian carp Cyprinus carpio var.

Juvenile Jian carp initial weight However, diet supplemented with Ala-Gln did not affect the levels of serum glucose, cortisol and catecholamine in fish. Sequential diets, metabolic costs, and growth proimal Spodoptera eridania Lepidoptera: Noctuidae feeding upon dill, lima bean, and cabbage. This study illustrates the diversity of feeding responses of individually polyphagous southern armyworms, Spodoptera eridania, to plants with differing allelochemics.

In spite of the near optimal leaf water and nitrogen contents of the young foliage, it analisus apparent that vastly different larval growth performance results from dill, lima bean, and cabbage. Cabbage proximap the poorest food as measured by larval growth rates and metabolic costs of processing the plant biomass.

Unlike the case with certain other plant species or cultivars that are costly to process, with cabbage, S.

Analytical Techniques in Aquaculture Research

Biochemical or physiological reasons for this inability are unknown. A sequence of foods changed each h apparently did not add sufficient stress upon the MFO system to be detected in the respiratory expenditures of S.

The larval growth performances and metabolic expenditures in proxmial sequences were intermediate between the best food dill and the worse cabbage.

Significant differences were observed however between the sequential switching sequences, perhaps indicating that particular periods during the instar are especially more sensitive to certain allelochemics.

Actual respiratory costs of the lima bean-cabbage-dill i. This study and a related one Scriber a illustrate how consumption rates, feeding efficiences, and larval growth of Spodoptera eridania are not species, population, or even individual characteristics, cf.

Fox and Morrowbut instead depend largely upon variations in plant allelochemics and plant. Directory of Open Access Journals Sweden. Full Text Available A feeding trial was conducted in tilapia to determine the growth performance, nutrient digestibility, digestive enzymes, and postprandial blood metabolites in response to different dietary amylose-amylopectin ratios. Five isonitrogenous and isolipidic diets containing an equal starch level with different amylose-amylopectin ratios of 0. Each diet was hand-fed to six tanks of 15 fish each, three times a day over a 6-wk period.

After the growth trial, a postprandial blood metabolic test was carried out. Fish fed diet 2 exhibited the highest percent weight gain and feed efficiency and protein efficiency ratio, whereas fish fed with diet 5 showed the lowest growth and feed utilization among treatments. The digestibility for starch in fish fed diet 1 and 2 was higher than those in fish fed with other diets p feeding rate, hepatosomatic index, condition factor, and plasma parmeters glucose, triglyceride, total cholesterol, high-density lipoprotein cholesterol, and low-density lipoprotein cholesterol did not differ across treatments.

In terms of postprandial blood responses, peak blood glucose and triglycerides were lower after 3 or 6 h in the fish fed with diets 3—5 than in the fish fed diet 1, but delayed peak blood total amino acid time was observed in fish fed with the diets 1 or 2. The lowest peak values for each of the three blood metabolites were observed in fish fed diet 5. Creep- feeding to stimulate metabolic imprinting in nursing beef heifers: This experiment compared growthphysiological, and reproductive responses of beef heifers with MI or without CON access to a creep-feeder, as a manner to stimulate metabolic imprinting while nursing their dams.


From day 1 to 51, MI pairs and their dams were allocated to 15 drylot pens where heifers had ad libitum access to a corn-based supplement through a creep-feeder. The CON pairs and their dams were maintained in an adjacent single drylot pen. From day 52 totreatments were managed as a single group on a semiarid range pasture. Heifer BW was recorded before and at the end of the creep- feeding period day 1 to 51and on days and On days 0, 51,andjugular blood was collected and real-time ultrasonography for longissimus muscle depth and backfat thickness assessment was performed.

Blood was also collected every 10 days from days to for puberty evaluation via plasma progesterone. Liver and subcutaneous fat biopsies were performed on days 51,and Average daily gain was greater Pimprinting effect, but did not hasten their puberty attainment. Fishmeal with different levels of biogenic amines in Aquafeed: Comparison of feed protein quality, fish growth performance, and metabolism.

Furthermore, the study investigated The latter could be a consequence of the higher level of protein oxidation of LB fishmeal Effects of feed composition on life history developments in feed intake, metabolismgrowth and body composition of European eel, Anguilla anguilla.

To examine the effect of feed composition on changes in feed intake and subsequent feed utilization with age, five populations of European eel, with an average initial body weight of 5 g each fed a different diet, were monitored for d. The five feeds differed in their content of crude protein. Metabolic alterations due to caloric restriction and every other day feeding in normal and growth hormone receptor knockout mice.

Mutations causing decreased somatotrophic signaling are known to increase insulin sensitivity and extend life span in mammals. Caloric restriction and every other day EOD dietary proxiaml are associated with similar improvements to insulin signaling and longevity weendde normal mice; however, these interventions fail to increase insulin sensitivity or life span in growth hormone receptor knockout GHRKO mice.

In normal mice, caloric restriction increased both the range of VO2 and the analizis in minimum VO2 between fed and fasted states, whereas EOD diet caused a relatively static VO2 pattern under fed and fasted states. This provides further evidence that longevity-conferring diets cause major metabolic changes in normal mice, but not in GHRKO mice. Effect of feeding frequency and feeding rate on growth of Effect of feeding frequency and feeding rate on growth of Oreochromis mossambicus Teleostei: Weight gain, specific growth rate and gross food conversion ratio were significantly affected by Plasma glucose and triglyceride concentrations showed a significant difference at 2 and 4 h after a meal and varied between dietary treatments.

The pre-weaning period is critical for calf health and growthand intensive milk feeding programs may assist postnatal development by improving body growth and organ maturation.

The aim of the present work was to study the effects of ad libitum milk replacer MR feeding on the growthmetabolic adaptation, health, and immune status of analiss calves. The expression of mRNA associated with both the somatotropic axis and gluconeogenic enzymes was measured in the liver on day Most metabolic and endocrine differences occurred during the MR feeding period, but a slightly greater concentrate intake was associated with increased plasma IGF-I and insulin at the end of the study.

The immune and health status of the calves were not affected by MR feeding. However, increased plasma fibrinogen in the RES group suggested differences in the acute phase response. Effect of feeding frequency and feeding rate on growth performance Fish fed at higher feeding rates accumulated significantly more lipid within the body and had associated decreases in moisture, protein, and ash content, but carcass composition was unaffected by feeding frequency.


Feed intake, growth and feed utilization patterns of pigs highly Studies on growthnitrogen and energy metabolism in rats. Feed intake, growthnitrogen retention and energy metabolism were measured in 12 male Wistar rats fed ad lib.

In relation to metabolic Effects of in ovo feeding of carbohydrates and arginine on hatchability, body weight, energy prozimal and perinatal growth in duck embryos and neonates. The objective of this study was to test the hypothesis that in ovo feeding of carbohydrates and arginine into the duck amnion may improve the glycogen store and perinatal growth.

Body weight, liver and muscle glycogen levels, and hepatic glucosephosphatase activity were determined at 25 d of incubation, at hatch, and at 3 and 7 d posthatch.


At hatch and 7 d of age, the body weights were greater in the in ovo- feeding treatments than the controls. In ovo feeding of carbohydrates and arginine ed 23 d of incubation may improve glycogen reserves, which may, in turn, provide the energy needed for perinatal growth. Liposoluble vitamins in Crustacean feed: Metabolic and Histological responses. Vitamins are vital for normal growth and survival anaalisis living organisms and they are distributed in feedstuffs in small quantities.

This review is focused on the liposoluble vitamins Seende, D, E and K in the diets and metabolic responses of the Argentine penaeoid shrimps Pleoticus muelleri and Artemesia longinaris, distributed along the South American coast line. Growthsurvival and histological analyses serve as indicators of the nutritional value derived from vitamin deficiency. Liposoluble vitamins are also related to stress, antioxidant defense and immune response of shrimps.

Effective diet for shrimp culture that provide not only macronutrients including protein and lipid but also micronutrients such as vitamins for optimal growth is an ever improving subject.

This review may help formulating suitable feeds for shrimps. Metabolic control of feed intake: The objective of this article is to discuss metabolic control of feed intake in the peripartum period and its implications for metabolic disease of fresh cows. Understanding how feed intake is controlled during the transition from gestation to lactation is critical to both reduce risk and successfully treat many metabolic diseases. Published by Elsevier Inc. Larval developmental rate, metabolic rate and future growth performance in Atlantic salmon.

The observed relationship between future growth and larval developmental rate suggests that sorting larvae by time to first feeding can be a analisid tool to optimize feeding strategies Furthermore, the link between larval standard metabolic rate and developmental rate and future growth is discussed in the present study Effect of chicken genotype on growth performance and feed This experiment was conducted to assess the effect of chicken genotype on the growth performance, feed intake and feed efficiency of the progenies resulting from pure, straight and reciprocal cross of Giriraja Gr and Alpha chickens.

Data obtained on body weight, body length, breast girth, keel length, feed intake and feed Effects of increasing dietary protein levels prkximal growthfeed utilization The effect of different dietary protein levels on growth performance and on feed utilization of catfish. Legendre, because of its taste, fast growth rate Feeding Our Immune System: Full Text Available Endogenous intestinal microflora and environmental factors, such as diet, play a central role in immune homeostasis and reactivity.

In addition, microflora and diet both influence body weight and insulin-resistance, notably through an action on adipose cells. Moreover, it is known since a long time that any disturbance in metabolismlike obesity, is associated with immune alteration, for example, inflammation. The purpose of this review is to provide an update on how nutrients-derived factors mostly focusing on fatty acids and glucose impact the innate and acquired immune systems, analisus the gut immune system and its associated bacterial flora.