scholarly journals Energy balance and energy values of α-amylase (EC 3. 2. 1. 1)-resistant maize and pea (Pisum sativum) starches in the rat

1990 ◽  
Vol 63 (3) ◽  
pp. 467-480 ◽  
Author(s):  
G. Livesy ◽  
I. R. Davies ◽  
J. C. Brown ◽  
R. M. Faulks ◽  
S. Southon
Keyword(s):  
Wistar Rats ◽  
Live Weight ◽  
Basal Diet ◽  
Fat Deposition ◽  
Dietary Energy ◽  
Lean Tissue ◽  
Digestible Energy ◽  
Male Wistar Rats ◽  
Gross Energy ◽  
Resistant Starches

Apparent and partial digestible energy values for α-amylase (EC 3. 2. 1. 1)-resistant, retrograde starches, isolated from cooked maize and pea starches (RMS and RPS respectively), were determined in male Wistar rats (about 180 g) during a 28–29 d balance period with ten animals per treatment. The starches were provided as supplements (100 g/kg diet) to a semi-synthetic basal diet (B), and their effects on the apparent digestibilities of nitrogen and fat, and on gains of live weight, fat and lean tissue were examined. Diet B alone was the control; sucrose (Su) and Solka-floc cellulose (SFC) were also examined for reference. Apparent digestibilities for Su, SFC, RMS and RPS were 1.0, 0.16, 0.98 and 0.89 respectively. Whereas the apparent digestibilities of gross energy, N and fat in the diet were unaffected by supplementation with Su, each was decreased by supplementation with SFC, RMS and RPS. Partial digestible energy values calculated from the intakes and faecal losses of energy in the basal and supplemented diets were 15, 12.4 and 0.8 kJ/g for RMS, RPS and SFC respectively. These values were smaller than corresponding apparent digestible energy values calculated from the apparent digestibility of the supplement and its gross energy value. Only the Su and starch supplements increased the intake of apparent digestible energy and the gain of live weight. Both starches and Su increased total energy (and fat) deposition to almost similar extents. It is concluded that the resistant starches contribute significant dietary energy, enhance growth and elevate fat deposition to extents almost similar to Su.

The effect of dietary energy concentration and lysine/digestible energy ratio on growth performance and nitrogen deposition of young hybrid pigs

1998 ◽  
Vol 67 (1) ◽  
pp. 117-129 ◽  
Author(s):  
T. A. Van Lunen ◽  
D. J. A. Cole
Keyword(s):  
Body Composition ◽  
Growth Performance ◽  
Nitrogen Deposition ◽  
Deposition Rate ◽  
Live Weight ◽  
Energy Utilization ◽  
Energy Concentration ◽  
Dietary Energy ◽  
Digestible Energy ◽  
Gross Energy

AbstractAn experiment was conducted to examine the effects of dietary lysine/digestible energy (DE) ratio (g/MJ) and dietary energy concentration on growth performance and body composition of young hybrid gilts from 9·1 to 25·4 kg live weight. Seven pigs were assigned to each of 10 dietary treatments consisting of lysine/DE ratios from 0·6 to 1·4 in 0·2 g/MJ increments and two DE concentrations (14·25 and 16·40 MJ/kg). Food was provided ad libitum and at 25·4 kg all pigs were slaughtered and body composition was determined. Responses to lysine/DE ratios were different for each DE concentration. The pigs given the 16·40 MJ/kg DE diets had a higher daily live-weight gain (DLWG) and nitrogen deposition rate (NDR) than those given the 14·25 MJ/kg diets up to the 1·2 g/MJ lysine/DE ratio. Beyond this point no DE effects were evident. Lipid deposition rate (LDR) was higher for all 16·40 MJ/kg diets as compared with the 14·25 MJ/kg diets and decreased with increasing lysine/DE ratio. The 14·25 MJ/kg diets resulted in increasing efficiency of nitrogen and gross energy utilization with increasing lysinel DE ratio up to the 1·0 g/MJ ratio after which it declined. Efficiency of lipid utilization decreased with increasing lysine/DE ratio for all 14·25 MJ/kg diets. The 16·40 MJ/kg diets resulted in a decrease in nitrogen and gross energy utilization efficiency with increasing lysine/DE ratio while lipid efficiency decreased up to the 1·0 g/MJ lysine/DE ratio after which it increased. Young hybrid pigs given high energy diets appear to be less sensitive to dietary lysine/DE ratio than those given lower energy diets. The optimum lysine/DE ratio for the genotype tested from 9 to 25 kg live weight was of the order of 1·2 g/MJ for both DE concentrations. The maximum DLWG and NDR of the genotype tested over the live-weight range of 9 to 25 kg appears to be of the order of 620 and 17 g/day (106 g/day protein deposition rate) respectively.

Determination of digestible energy, metabolisable energy and oil digestibility of triple-low rapeseed products for growing and finishing pigs

1990 ◽  
Vol 1990 ◽  
pp. 143-143
Author(s):  
J.A. Agunbiade ◽  
J. Wiseman ◽  
D.J.A. Cole
Keyword(s):  
Nutritive Value ◽  
Indigo Carmine ◽  
Live Weight ◽  
Basal Diet ◽  
Rapeseed Meal ◽  
Finishing Pigs ◽  
Large White ◽  
Digestible Energy ◽  
Freeze Dried ◽  
Gross Energy

The use of full-fat rapeseed in non-ruminant animal feeding has for long been limited by the presence of anti-nutritive components. However, triple-low varieties have a considerable potential as a source of both protein and dietary energy in diets, although there is the need for precise information on the relative nutritive value of full-fat rapeseed and the resulting extracted oils and meals before they may be effectively and economically incorporated into animal diets.The rapeseed products evaluated comprised ground full-fat rapeseed (FFRS) extracted rapeseed meal (RSM) and rapeseed oil (RSO) all from a triple-low variety, Brassica campestris SVO 333, obtained from Dalgety-Panmure Co. Angus, U.K. The RSO, RSO plus RSM (ORSM) and FFRS were included to give levels of added oil of 40, 80 and 120 g/kg at the expense of the energy-yielding ingredients of the basal diet (Table 1). The RSM was incorporated into the basal at the same rates as in ORSM. All experimental diets were fed to 13 Landrace x (Landrace x Large White) gilts of 46kg average initial live weight in a metabolism trial conducted over four successive time periods. A ten-day acclimatisation in holding pens preceded a 5-day total collection of faeces (using indigo carmine as marker) and urine (facilitated by indwelling bladder catheter) in metabolism crates. The rapeseed products, diets, oven-dried faeces and freeze-dried urine were analysed for gross energy (GE) and (except urine) for oil content. Apparent digestible energy (DE) of test materials were derived by regression analysis. DE of oil was also derived indirectly as a product of oil digestibility and oil GE.

Intake and utilization of energy from ammonia-treated and untreated wheat straw by steers and wether sheep given a basal diet of grass pellets and hay

1993 ◽  
Vol 57 (2) ◽  
pp. 227-236 ◽  
Author(s):  
S. J. Oosting ◽  
H. A. Boekholt ◽  
M. J. N. Los ◽  
C. P. Leffering
Keyword(s):  
Wheat Straw ◽  
Latin Square ◽  
Live Weight ◽  
Basal Diet ◽  
Metabolizable Energy ◽  
Digestible Energy ◽  
Higher Ed ◽  
Gross Energy ◽  
Ad Libitum ◽  
Voluntary Intake

AbstractTwo experiments, experiment 1 with six steers in a 3 × 3 Latin-square design and experiment 2 with four wether sheep in a cross-over design, were conducted to study the effect of species and ammonia treatment on intake and utilization of the energy of untreated wheat straw. Treatments were: (1) untreated wheat straw offered ad libitum on top of a basal diet (B) consisting of hay (0·25) and grass pellets (0·75) (UWS), (2) ammoniated wheat straw offered ad libitum plus B (AWS) and (3) ammoniated wheat straw offered at a restricted level plus B (AWS-). B was offered as a maintenance diet for both species and AWS- was only studied in steers. Voluntary intake of AWS zvas higher than that of UWS. No significant differences emerged between whole rations UWS and AWS with regard to energy digestion (ED), energy metabolizability (ρ = metabolizable energy (ME) I gross energy (GE)) and losses of digestible energy (DE) in urine and methane (average 187 J/KJ DE), but the efficiency of utilization of ME for growth (kg) was significantly higher for AWS than for UWS. ED and ρ of the straw part of the ration was significantly higher for AWS than for UWS. AWS- and AWS did not differ significantly with regard to ED, ρ and DE losses in methane and urine. Steers had a higher intake per kg0·75 per day than wether sheep. Across species, digestible energy intake (DEI) of the whole ad libitum fed diets was related to live weight (M)0·946 (s.e. of exponent 0·0152). ED and ρ of the straw part of the rations did not differ significantly between species, but steers had a significantly higher ED and ρ of β than wether sheep. Steers excreted a significantly lower proportion of DE in urine and a significantly higher proportion of DE in methane than did wethers. Total energy losses in urine and methane, however, did not differ between species.

The dietary energy values of soya-bean oil, tallow and their blends for growing/finishing pigs

1990 ◽  
Vol 50 (3) ◽  
pp. 513-518 ◽  
Author(s):  
J. Wiseman ◽  
D. J. A. Cole ◽  
B. Hardy
Keyword(s):  
Fatty Acids ◽  
Saturated Fatty Acids ◽  
Linear Equations ◽  
Live Weight ◽  
Basal Diet ◽  
Latin Squares ◽  
Soya Bean ◽  
Dietary Energy ◽  
Finishing Pigs ◽  
Gross Energy

ABSTRACTTwo fats, soya-bean oil and tallow, were blended in the ratios 70: 30, 50: 50 and 30: 70. The ratios of unsaturated to saturated fatty acids (U/S) of the blends were 3·18, 2·08 and 1·49 respectively; values for soya-bean oil and tallow were 6·69 and 0·93. These five fat sources were each included into a basal diet at levels of 40, 80 and 120 g/kg. The digestible (DE) and metabolizable (ME) energy together with the apparent fat digestibility (AFD) of the experimental diets were measured in a metabolism trial based upon four 4 × 4 Latin squares using 16 gilts of 30 kg initial live weight. Linear equations relating dietary DE and ME values to level of inclusion of fat were extrapolated to 1000 g/kg to obtain values for the fats. DE values for soya-bean oil and tallow were 38·06 and 34·16 MJ/kg respectively. Corresponding data for ME were 35·63 and 32·53 respectively. These figures were used to calculate values of the mixtures. Data thus derived did not differ significantly from those determined directly, indicating that there was no synergism between the two fats. DE values of fats determined as the product of AFD of fats and their gross energy followed similar trends. The majority of the increase in values of fats was associated with a change in the U/S ratio from 0·93 to 2·08.

Effects of dietary spray-dried plasma protein on nutrient digestibility and growth performance in nursery pigs

2021 ◽  
Author(s):  
Hansol Kim ◽  
Seung Hyung Lee ◽  
Beob Gyun Kim
Keyword(s):  
Plasma Protein ◽  
Soybean Meal ◽  
Crude Protein ◽  
Fish Meal ◽  
Basal Diet ◽  
Nursery Pigs ◽  
Digestible Energy ◽  
Ileal Digestibility ◽  
Gross Energy ◽  
Spray Dried

Abstract The objectives were to determine the digestible energy and standardized ileal digestibility of amino acids (AA; Exp. 1) and to determine growth performance (Exp. 2) of 2 sources of dietary spray-dried plasma protein (SDPP) in nursery pigs. In Exp. 1, twelve nursery barrows (9.8 ± 0.9 kg) were assigned to a quadruplicated 3 × 2 Latin square design with 3 diets and 2 periods. Each period consisted of 5 days of adaptation, 2 days of fecal sampling, and 2 days of ileal collection. A basal diet was composed of corn, soybean meal, whey, and sucrose as the sole energy and AA sources. Experimental diets were prepared by replacing 15% of the energy and AA sources in the basal diet with SDPP 1 (manufactured in the USA; 78.2% crude protein and 4,862 kcal gross energy/kg as-is) or SDPP 2 (manufactured in Korea; 74.3% crude protein and 4,636 kcal gross energy/kg as-is). Spray-dried plasma protein 1 had greater digestible energy (P < 0.05), but less (P < 0.05) standardized ileal digestibility of Lys, Met, Trp, and Thr compared with SDPP 2. In Exp. 2, eighty-four nursery pigs (7.9 ± 0.7 kg) were allotted to 3 dietary treatments in a randomized complete block design with 7 replicate pens and 4 pigs per pen. Three corn-soybean meal-whey-based diets contained fish meal (6% and 3.5% for d 0 to 14 and d 14 to 28, respectively), SDPP 1 (4.5% and 2.7%), or SDPP 2 (5.0% and 3.0%) to maintain same energy and nutrient concentrations. During d 0 to 14 and overall period, pigs fed the diets containing SDPP gained more weight (P < 0.05) than those fed the fish meal diet with no difference between 2 SDPP sources. In conclusion, SDPP 1 contains greater digestible energy but less AA digestibility compared with SDPP 2. Growth-promoting effects of both SDPP sources in nursery diets have been clearly demonstrated in this work.

scholarly journals Energy values and energy balance in rats fed on supplements of guar gum or cellulose

1991 ◽  
Vol 65 (3) ◽  
pp. 415-433 ◽  
Author(s):  
I. R. Davies ◽  
J. C. Brown ◽  
G. Livesey
Keyword(s):  
Energy Balance ◽  
Guar Gum ◽  
The Body ◽  
Dietary Energy ◽  
Energy Status ◽  
Fat Pad ◽  
Lean Tissue ◽  
Additional Energy ◽  
Male Wistar Rats ◽  
Body Energy

In five experiments where guar gum (GG) or Solka-floc cellulose (SF) supplemented a semi-synthetic diet (100 g/kg) for male Wistar rats at 21°, it was found that GG acutely depressed both ad lib. and meal-fed food intakes by 40–50 %. The effect was temporary, with the GG having no effects on food intake in the longer term. Dietary energy balance over 28 d with animals fed on equal amounts of a basal ration showed partial digestible energy values, calculated from the intake and faecal loss of energy, for the supplements which averaged 0 kJ/g SF and 10 kJ/g GG, so that GG contributed substantial amounts of absorbable energy. Despite this additional energy from GG, there was very often no additional gain of body fat. Rather, in some experiments, fat deposition was actually decreased by supplementation with GG. GG is inferred to have a putative thermogenic effect which is often greater than the energy it supplies. This effect occurred to a greater extent in circumstances associated with a higher ‘energy status’, indicated by higher efficiencies of conversion of gross dietary energy to retained body energy, higher fat: lean tissue deposition ratios and the occurrence of larger deposits at the epididymal fat pad site. There was some evidence that deposition at this site was more extensively affected by GG than deposition of fat in the body as a whole. Possible implications of the present findings are discussed.

Partition of dietary energy by sheep fed fresh ryegrass (Lolium perenne) with a wide-ranging composition and quality

2020 ◽  
Vol 60 (8) ◽  
pp. 1008
Author(s):  
C. A. Ramírez-Restrepo ◽  
G. C. Waghorn ◽  
H. Gillespie ◽  
H. Clark
Keyword(s):  
Lolium Perenne ◽  
Sulfur Hexafluoride ◽  
Nutritive Value ◽  
Open Circuit ◽  
Energy Losses ◽  
Dietary Energy ◽  
Digestible Energy ◽  
Gross Energy ◽  
Metabolisable Energy ◽  
Predicted Values

Context Perennial ryegrass (Lolium perenne L.) is an important forage in temperate ruminant agricultural systems, but its quality and composition is highly variable and can become dominated by senescent material during summer and dry periods. Nutritive value is often predicted on the basis of chemical composition and calculated metabolisable energy (ME), which is rarely measured. Aim To measure the partition of energy from ryegrasses with widely varying proportions of leaf and senescent material, among faeces, urine and methane (CH4) in sheep. Methods Three experiments were undertaken with two groups of young wether sheep, fed seven diets of freshly cut ryegrass, at maintenance levels of intake to measure the partition of dietary energy among faeces, urine and CH4, enabling ME to be calculated. Across the seven diets, green leaf accounted for 16.0–87.6% of feed offered, whereas senescent material ranged from 2.8% to 65.0% and nitrogen (N) ranged between 8.6 and 31.2 g/kg DM. Measured ME was compared with predicted values based on digestible energy. Methane emissions were determined by both open-circuit respiration chambers and sulfur hexafluoride marker dilution. Key results Apparent digestibility (g/100 g) of DM ranged from 51.8 to 75.3 and N from 26.7 to 73.9. The percentage of the gross energy of feeds partitioned to CH4 (chamber) was 6.01–7.42, and 1.77–5.69 to urine. Effects of digestibility on CH4 yields (g/kg DM intake) were minor and the sum of energy losses to CH4 and urine were 13.5–17.6% of digestible energy (DE) intake, suggesting an underestimation of ME when predicted from DE. Use of sulfur hexafluoride substantially overestimated CH4 emissions when the permeation tubes had been in the sheep for 80 days. Conclusions A high proportion of senescent material in ryegrass had little effect on CH4 yields from sheep and energy losses to urine were mostly less than 3% of energy intake and were related to dietary N concentration. Implications Dietary ME calculated from DE is likely to be underestimated when ryegrass contains a high proportion of senescent material, due to reduced urinary energy losses, as CH4 yields are largely unaffected by maturity or senescence.

scholarly journals Experimental induction of steatosis in different tissues after the ingestion of a carbohydrate-rich diet: effect on the liver, on the heart and on indicators of oxidation

2010 ◽  
Vol 47 (4) ◽  
pp. 388-392 ◽  
Author(s):  
Nadia Juliana Beraldo Goulart Borges Haubert ◽  
Gilberto João Padovan ◽  
Sérgio Zucoloto ◽  
Hélio Vannucchi ◽  
Julio Sergio Marchini
Keyword(s):  
Vitamin E ◽  
Adult Male ◽  
Wistar Rats ◽  
Reduced Glutathione ◽  
Fat Deposition ◽  
Male Wistar Rats ◽  
Hepatic Fat ◽  
Lipid Vacuoles ◽  
Animal House ◽  
Experimental Group

CONTEXT: The western dietary pattern is characterized by a high calorie intake with a high proportion of simple sugars. This diet is associated with comorbidities such as hepatic fat deposition and is possibly related to non-alcoholic fatty liver disease. OBJECTIVE: To evaluate the capacity of a hyperglucidic diet to induce steatosis in adult male Wistar rats. After the administration of a carbohydrate-rich diet, we also evaluated the presence of hepatic and cardiac steatosis and the levels of intrinsic antioxidants in the liver. METHODS: Forty-six eutrophic adult male Wistar rats were used and 10 of them were chosen, at random, to serve as controls, while the remaining ones formed the experimental group. Control animals received the standard ration offered by the animal house and the experimental group received the hyperglucidic diet. The diets were offered for 21 days and, at the end of this period, tissue samples were collected for analysis of indicators of oxidative stress (malondialdehyde, and reduced glutathione) and of vitamin E. The animals were then sacrificed by decapitation and their viscera were removed for analysis of liver and heart fat. RESULTS: The hyperglucidic diet used induced hepatic fat deposition, with lipid vacuoles being detected in 83% of the livers analyzed by histology. No lipid vacuoles were observed in the heart. Malondialdehyde and reduced glutathione levels remained unchanged when the animals were submitted to the hyperglucidic diet, probably because there was no liver development of fibrosis or inflammation. In contrast, the levels of vitamin E (antioxidant) were reduced, as confirmed in the literature for steatotic animals. CONCLUSION: The hyperglucidic diet induced hepatic steatosis. In the heart there was an increase in fat content, although no histological changes were observed. These alterations cannot be explained by the presence of malondialdehyde or reduced glutathione (indicators of oxidation), since the values were similar in the groups studied. However, a significant reduction of vitamin E was observed in the experimental group.

scholarly journals Utilization of salts of volatile fatty acids by growing sheep

1966 ◽  
Vol 20 (2) ◽  
pp. 295-305 ◽  
Author(s):  
E. R. Ørskov ◽  
D. M. Allen
Keyword(s):  
Volatile Fatty Acid ◽  
Volatile Fatty Acids ◽  
Live Weight ◽  
Basal Diet ◽  
Control Group ◽  
Level Control ◽  
Control Groups ◽  
Gross Energy ◽  
High Level ◽  
Basal Ration

1. An experiment was conducted in which sodium and calcium salts of acetic, propionic and butyric acids were given to groups of eight lambs as additions to basal diets of hay and concentrate. Two control groups were included, one group which received only the basal ration and one high-level control group which received sufficient additional concentrate to achieve growth rates greater than those of the groups receiving volatile fatty acid (VFA) salts. 2. With rumen-fistulated sheep, the effect on the rumen VFA composition and the pH of the rumen liquor, of diets supplemented with VFA salts given twice daily, was also investigated and compared with the effect of the basal diet alone. 3. The lambs receiving the VFA salts grew faster and achieved significantly greater empty body and carcass weights than those receiving only the basal rations; the high-level control group had significantly greater empty body and carcass weights than groups receiving salts of VFA. 4. There were no differences approaching significance in the efficiency of the three VFA in promoting gains in live weight, empty body weight and carcass weight. There appeared to be equal efficiency of utilization of the gross energy of the VFA and of the calculatedmetabolizable energy of the concentrates. 5. The effect of twice-daily feeding on the rumen VFA composition was that the concentration of the supple- mentary acid was greatest shortly after feeding, and about 5–6 h after feeding the effect was difficult to detect. There were no differences in the pH of the rumen liquor between animals given diets containing VFA salts and those given the basal ration.

The effect of dietary nutrient density on growth in the pig

1977 ◽  
Vol 25 (3) ◽  
pp. 261-269 ◽  
Author(s):  
T. L. J. Lawrence
Keyword(s):  
Crude Protein ◽  
Live Weight ◽  
The Other ◽  
Fatty Tissue ◽  
Lean Tissue ◽  
Large White ◽  
Digestible Energy ◽  
Nutrient Density ◽  
Dietary Nutrient ◽  
The One

SUMMARYForty-eight Large White ♂× (Landrace × Large White) ♀ male castrate pigs were individually fed, on a live-weight-based scale between approximately 23 kg and 88 kg live weight, similar daily in-takes of digestible energy, crude protein and total lysine from four diets (12 pigs per diet) of widely differing compositions and nutrient densities. The digestible energy contents (MJ/kg) (1), crude protein (%) (2) and total lysine (%) (3) contents of the diets were: diet A (1) 11·40, (2) 14·40, (3) 0·82; diet B (1) 12·90, (2) 16·50, (3) 0·94; diet C (1) 14·96, (2) 19·20, (3) 1·09 and diet D (1) 18·28, (2) 23·30, (3) 1·32. To give the required daily nutrient intakes, relative to diet A (100) the intakes of diets B, C and D were 87·5, 75·0 and 62·5 respectively. Growth rates, carcass weights (from dissimilar but non-significantly different slaughter weights), killing-out percentages and the digestible energy required to produce a unit of carcass improved progressively from diet A to diet D. In these variables the significant differences tended to lie between diets A and B on the one hand compared with diets C and D on the other. The weights of lean tissue dissected from the carcass were similar for all pigs. The weights of dissected fatty tissue and backfat thicknesses increased from diet B to C to D but only the differences between diets B and D were statistically significant.

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