The effects of feeding level during both pregnancy and lactation on long-term productivity and body composition of sows

1991 ◽  
Vol 1991 ◽  
pp. 9-9
Author(s):  
P.A. Lee ◽  
W.H. Close
Keyword(s):  
Body Composition ◽  
Late Pregnancy ◽  
The Body ◽  
Feeding Level ◽  
Body Reserves ◽  
Pregnancy And Lactation ◽  
Inadequate Nutrition ◽  
Available Information

Body reserves play an important role in reproduction because they can be used by the sow to buffer against inadequate nutrition when metabolic demands are high, especially in late pregnancy and lactation. There is, however, little available information on the dynamic role of body reserves during reproduction and the present experiments were designed to demonstrate how the body reserves of the sow change in response to different nutritional inputs and to determine whether these influence sow productivity.

A note on the estimation of the chemical body composition of sows

1986 ◽  
Vol 43 (1) ◽  
pp. 167-170 ◽  
Author(s):  
R. H. King ◽  
Elizabeth Speirs ◽  
P. Eckerman
Keyword(s):  
Body Composition ◽  
The Body ◽  
Fat Reserves ◽  
Body Reserves ◽  
Pregnancy And Lactation ◽  
Nutritional Strategies

Present day sows, particularly young sows, have smaller fat reserves than they did 10 to 20 years ago (Whittemore, Franklin and Pearce, 1980). Consequently, changes in the sows' body reserves during pregnancy and lactation have become much more critical in evaluating various nutritional strategies. The interpretation of many experiments designed ot investigate the effects of nutrition of the sow would be enhanced if changes in the body composition of the animal could be determined.

An ultrastructural and cytochemical study of microbodies in the genus Nitella (Characeae)

1973 ◽  
Vol 51 (11) ◽  
pp. 2025-2032 ◽  
Author(s):  
B. A. Silverberg ◽  
T. Sawa
Keyword(s):  
Enzyme Assay ◽  
The Body ◽  
Cytochemical Localization ◽  
Cytochemical Study ◽  
Spherical Inclusions ◽  
Complete Digestion ◽  
Assay Methods ◽  
Granular Matrix ◽  
Available Information

Electron microscopy of the cells of the characean alga Nitella flexilis revealed the presence of numerous spherical inclusions which morphologically resemble plant microbodies. The structures have a dense granular matrix and are bounded by a single membrane. Many of the microbodies contain very electron-dense nucleoids that were shown to be alpha-amylase sensitive. In cells of the young apex, microbodies are the most abundant cellular organelle and are intimately associated with dilated cisternae of the endoplasmic reticulum and Golgi complexes, and with large osmiophilic lipid bodies. Although the microbody population appears reduced in mature branchlet cells and internode cells of the main axis, they exhibit a characteristic and frequent association with the chloroplasts. Turnover of microbodies involves some autolytic degradation of the body matrix until complete digestion presumably occurs. Developmental changes of microbodies were monitored with the cytochemical localization of lysosomal aryl sulfatase and acid phosphatase activities. The current study is of interest since catalase, an enzyme marker of microbodies in a variety of tissues, could not be detected using both cytochemical and enzyme assay methods. The functional role of microbodies in Nitella cells is explored in relation to presently available information.

scholarly journals HYPERMNESIA EUPHORIA OR ANY OTHER DESIRABLE FROM THE POINT OF VIEW OF THE CONSUMER, A PSYCHOTROPIC EFFECT - FIRST AND LEADING ELEMENT IN THE OCCURRENCE AND PRESERVATION OF THE BODY’S DEPENDENCE ON PSYCHOACTIVE FACTORS

2017 ◽  
Vol 9 (3) ◽  
pp. 40-46
Author(s):  
D G Baitubayev ◽  
M D Baitubayeva
Keyword(s):  
Substance Dependence ◽  
Point Of View ◽  
The Body ◽  
Long Term Memory ◽  
Vegetative Nervous System ◽  
Term Memory ◽  
Psychotropic Effect

The work shows the role of the vegetative nervous system (VNS) in the functioning of long-term memory, identity mechanisms of long-term memory in the human evolutionary adaptation and substance dependence. It is shown that, depending on the substance of the body are states like pro- gressive adaptation, that the bodycondition, depending on the chemical and psychogenic psychoactive- factors state of the same circle. It proposed the creation of a branch of medicine that combines study of the dependence of the organism, both on the chemical and psychoactive psychogenic factors. Given the classification of psychoactive factors.Onomastics formulated definitions of terminology changes and additions to be used in a new branch of medicine. Proposed allocation of the International Classifica- tion of diseases separate chapter for the classification of states like progressive adaptation of the body depending on psychoactive factors.

Food intake regulation in late pregnancy and early lactation

1999 ◽  
Vol 24 ◽  
pp. 37-54 ◽  
Author(s):  
K. L. Ingvartsen ◽  
N. C. Friggens ◽  
P. Faverdin
Keyword(s):  
Food Intake ◽  
Late Pregnancy ◽  
Reproductive Hormones ◽  
Early Lactation ◽  
Physical Constraints ◽  
Body Reserves ◽  
Food Intake Regulation ◽  
Periparturient Cows ◽  
Intake Regulation

AbstractThe dip in food intake, which starts in late pregnancy and continues into early lactation, has traditionally been interpreted as a depression in intake due to physical constraints. However, the rôle of physical constraints on intake has been overemphasized, particularly in early lactation. There is mounting evidence that the presence and mobilization of body reserves in early lactation play an important rôle in regulating intake at this time.Conceptually, the dip in intake in early lactation observed when cows have access to non-limiting foods can be accounted for by assuming that the cow has a desired level of body reserves. When the cow is not compromised, the changes with time in body reserves and the dip in intake represent the normal case and provide the basis against which to assess true depressions in intake which may occur when the cow is compromised by limiting nutrition or environment.The regulation of body reserves and intake in the periparturient cow is orchestrated through nervous and hormonal signals. Likely factors that are involved in intake regulation are reproductive hormones, neuropeptides, adrenergic signals, insulin and insulin resistance and leptin. Furthermore, oxidation of NEFA in the liver may result in feedback signals that reduce intake. The relative importance of these is discussed. A better understanding of the physiological signals involved in intake regulation and their interrelations with body weight regulation may provide important indicators of the degree of compromise that periparturient cows may experience.

Transplacental Toxicity and Carcinogenesis Studies in Rats with Hexamethylenetetramine

1970 ◽  
Vol 56 (6) ◽  
pp. 325-334 ◽  
Author(s):  
Giuseppe Della Porta ◽  
José R. Cabral ◽  
Giorgio Parmiani
Keyword(s):  
Drinking Water ◽  
Body Weight ◽  
Wistar Rats ◽  
The Body ◽  
Carcinogenic Activity ◽  
Long Term Experiments ◽  
Pregnancy And Lactation ◽  
Successive Generations ◽  
And Control

In a previous paper (Fd Cosmet. Toxicol., 6: 707–715, 1968) it was reported that hexamethylenetetramine (HMT) had no carcinogenic activity in long-term experiments in mice and rats. In the present study, 12 ♀ and 6 ♂ Wistar rats were given 1% HMT in the drinking water starting 2 weeks before mating. The females were kept under treatment during pregnancy and lactation. A similar untreated group of 12 ♀ and 6 ♂ served as control. Twelve treated females and eleven controls became pregnant and gave birth to 124 and 118 babies respectively; no malformations were noted. From these animals, 24 for each sex were continued on the 1% HMT up to the 20th week of age or were kept untreated. The body weight of treated animals was significantly lower than that of controls one, only up to the 9th week of age for the males and up to the 13th week for the females. At the end of the treatment both groups were sacrificed; the weight of organs was identical in the treated and control animals; there were no gross or histological pathology. In a second experiment, rats were given 1% HMT in the drinking water for 3 successive generations, up to the age of 40 weeks in the F1 and F2 groups and of 20 weeks for F3. The three groups were composed of 13 ♂ and 7 ♀, 15 ♂ and 11 ♀, 12 ♂ and 12 ♂, respectively. In addition, a group of 16 ♂ and 16 ♀ descendants of 2% HMT treated parents, were given 2% HMT for 50 weeks. A group of 48 ♂ and 48 ♀ served as untreated controls. All groups were kept under observation for over 2 years of age. No evidence of carcinogenicity was found in any of the HMT-treated groups.

Effects of feeding level and of late pregnancy increases in feed allocation on the reproductive performance of sows

1987 ◽  
Vol 1987 ◽  
pp. 15-15
Author(s):  
V.R. Fowler ◽  
M. Curran ◽  
O. Davies ◽  
S. Edwards ◽  
M. Ellis ◽  
...  
Keyword(s):  
Reproductive Performance ◽  
Late Pregnancy ◽  
Management Tool ◽  
Terminal Phase ◽  
Critical Factors ◽  
Department Of Agriculture ◽  
Feeding Level ◽  
Younger Age ◽  
History Of

The role of nutrition in determining the reproductive performance of sows is still controversial. Much of the dispute arises because in many published experiments there were very few sows in each treatment group. In addition, there have been substantial changes In the husbandry of sows over recent years, and these include the much earlier weaning of the litter at as little as three weeks of age, the breeding of the gilt at a younger age since she reaches 100 kg very much more quickly, and the development of facilities which allow each sow to be treated as an individual. A further change has been in the genotype of the breeding female which means that quite often she enters the reproductive phase of her life carrying very much less adipose tissue than hitherto. The recent development of equipment and techniques to monitor the backfat thickness of sows during life has introduced a new management tool, for which guidelines are readily given, but for which hard experimental evidence is often lacking. The purpose of the coordinated experiment reported here was to attempt to establish critical factors in the history of the sow which put her reproductive performance at particular risk and to evaluate widely recommended practices of Increasing the feed Intake at over the terminal phase of pregnancy, The work was jointly funded by the Department of Agriculture for Scotland and each of the centres.

scholarly journals Growth and body composition in children with chronic kidney disease

2007 ◽  
Vol 97 (2) ◽  
pp. 232-238 ◽  
Author(s):  
R. Rashid ◽  
E. Neill ◽  
H. Maxwell ◽  
S. F. Ahmed
Keyword(s):  
Chronic Kidney Disease ◽  
Body Composition ◽  
Kidney Disease ◽  
Growth Failure ◽  
Potential Effect ◽  
Complex Problem ◽  
Physiological Mechanisms ◽  
Growth And Nutrition

Growth failure is a common yet complex problem of childhood chronic kidney disease caused by multiple factors encountered due to the primary disease or secondary to the renal impairment. This review seeks to describe the various patho-physiological mechanisms contributing to growth failure in the various stages of childhood with particular emphasis on nutritional problems and endocrine dysfunction encountered whilst managing these children. In addition, we shall examine the role of body composition in chronic kidney disease, their relationship with growth and nutrition and the potential effect of abnormalities in fat mass and lean mass on long-term morbidity and mortality.

Performance of ewes given maize silage during late pregnancy and lactation

1999 ◽  
Vol 1999 ◽  
pp. 130-130 ◽  
Author(s):  
J. Hill ◽  
A.B. Notman ◽  
S.P. Marsh
Keyword(s):  
Late Pregnancy ◽  
Early Lactation ◽  
Maize Silage ◽  
The United Kingdom ◽  
Pregnancy And Lactation ◽  
Dietary Components ◽  
Sheep Production ◽  
High Degree ◽  
Selection Of

Maize silage is a popular feed for dairy and beef cattle in the United Kingdom, but its popularity for sheep production has never been great. Several reasons for the lack of interest in maize silage for ewes and lambs have been cited; the growth of an annual crop for silage on holdings with a predominance of long-term leys, the low requirement of ewes and lambs for conserved feed, the possibility of low voluntary DM intakes and the risk of a high degree of selection of dietary components of the diet (Brown and Thomas, 1989). The research reported here examines the use of maize silage for ewes in late pregnancy and early lactation.

scholarly journals Role of Vitamin A in Mammary Gland Development and Lactation

Nutrients ◽  
2019 ◽  
Vol 12 (1) ◽  
pp. 80 ◽  
Author(s):  
M. Teresa Cabezuelo ◽  
Rosa Zaragozá ◽  
Teresa Barber ◽  
Juan R. Viña
Keyword(s):  
Retinoic Acid ◽  
Mammary Gland ◽  
Vitamin A ◽  
Vitamin A Deficiency ◽  
Retinoid Signaling ◽  
Nutritional Problem ◽  
Pregnancy And Lactation ◽  
Gland Development

Vitamin A (all-trans-retinol), its active derivatives retinal and retinoic acid, and their synthetic analogues constitute the group of retinoids. It is obtained from diet either as preformed vitamin A or as carotenoids. Retinal plays a biological role in vision, but most of the effects of vitamin A are exerted by retinoic acid, which binds to nuclear receptors and regulates gene transcription. Vitamin A deficiency is an important nutritional problem, particularly in the developing world. Retinol and carotenoids from diet during pregnancy and lactation influence their concentration in breast milk, which is important in the long term, not only for the offspring, but also for maternal health. In this study, we review the role of vitamin A in mammary gland metabolism, where retinoid signaling is required not only for morphogenesis and development of the gland and for adequate milk production, but also during the weaning process, when epithelial cell death is coupled with tissue remodeling.

The nutrition of the early weaned lamb:II. The effect of dietary protein concentration, feeding level and sex on body composition at two live weights

1970 ◽  
Vol 75 (1) ◽  
pp. 19-26 ◽  
Author(s):  
R. P. Andrews ◽  
E. R. Ørskov
Keyword(s):  
Body Composition ◽  
Crude Protein ◽  
Protein Concentration ◽  
Nitrogen Retention ◽  
Live Weight ◽  
Carcass Composition ◽  
The Body ◽  
Ether Extract ◽  
Feeding Level ◽  
Extract Content

SUMMARY1. In an experiment with ninety-nine lambs the effects on the body composition of male and female lambs were examined when five diets containing different concentrations of crude protein (in the range 10–20%) were given at three levels of feeding and lambs were slaughtered at two live weights (27·5 and 40 kg).2. With lambs slaughtered at 27·5 kg there were significant increases in the rate of both nitrogen and fat retention with increases in levels of feeding. There were also linear increases in the rate of protein deposition and decreases in fat deposition with increases in the concentration of crude protein. This effect was particularly marked at the high level of feeding.3. With lambs slaughtered at 40 kg live weight there were also linear increases in fat and in nitrogen deposition with increasing feeding level but the effect of increasing the protein concentration on increases in nitrogen retention departed from linearity.4. While at 27·5 kg there were no significant effects of feeding level on nitrogen and ether-extract content of the bodies at slaughter, with animals slaughtered at 40 kg there was a significant linear decrease in ether-extract content with increasing feeding level and a corresponding linear increase in nitrogen content with increased level of feeding.5. Male lambs deposited more nitrogen and less fat than females. This was true of both rate of deposition and of carcass composition at 40 kg live weight.

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