scholarly journals Using acid insoluble ash marker ratios (diet:digesta) to predict digestibility of wheat and barley metabolizable energy and nitrogen retention in broiler chicks

1998 ◽  
Vol 77 (5) ◽  
pp. 674-679 ◽  
Author(s):  
T.A. Scott ◽  
J.W. Hall
Keyword(s):  
Nitrogen Retention ◽  
Metabolizable Energy ◽  
Broiler Chicks

Influence of faba bean tannins on male broiler chicks: evaluation of hulls from white- and coloured-flowered cultivars and of near-isogenic lines

1993 ◽  
Vol 121 (3) ◽  
pp. 427-436 ◽  
Author(s):  
C. N. Wareham ◽  
J. Wiseman ◽  
D. J. A. Cole
Keyword(s):  
Faba Bean ◽  
Total Concentration ◽  
Daily Intake ◽  
Nitrogen Retention ◽  
Flower Colour ◽  
Metabolizable Energy ◽  
Experimental Unit ◽  
Broiler Chicks ◽  
Dietary Concentration ◽  
Inclusion Rate

SUMMARYThe hulls (seed coat) of tannin-free, white-flowered and tannin-containing, coloured-flowered faba beans (Viciafaba L.) were used in three experiments (1989–90) to investigate the effect of tannins on the apparent metabolizable energy corrected to zero nitrogen retention (AMEN) and apparent metabolizable nitrogen (AMN) of broiler chick diets.In Experiment 1, the effects of four rates of hull inclusion from one white- and one colouredflowered cultivar (0, 28, 56 and 84 g/kg) on dietary AMEN and AMN were studied. There was a significant response of AMEN to hull inclusion rate (P <0·001) but no inclusion rate × cultivar interaction. For dietary AMN there was a significant effect of hull inclusion rate (P <0· 001) but no inclusion rate x cultivar interaction.Experiment 2 consisted of two parts. In both, the total concentration of hulls was 227 g/kg but the ratio of white- to coloured-flowered hulls was varied in five increments; initially over the range 0·42–16·58 g/kg dry matter (DM) and subsequently, with another cultivar, 0·44–7·85 g/kg DM. Synthetic lysine and methionine were added to ensure that the basal diet was not limiting in these amino acids. A significant effect of tannin intake on dietary AMEN and AMN was detected across the greater range of tannin concentrations (P <0·001) but not across the smaller one.Experiment 3 evaluated three pairs of near-isogenic faba bean lines differing only in the gene governing tannin content and flower colour. Diets were formulated using three bean inclusion rates; 200, 400 and 600 g/kg. At each rate the white- and coloured-flowered lines were mixed in the ratios 100:0, 75:25, 50:50, 25:75 and 0:100. The response in carcass nitrogen retention (CNR) to tannin intake was assessed at each bean inclusion rate and for each pair of lines.There was a significant effect of tannin intake on CNR in only one of the nine comparisons and in that case CNR increased as dietary content increased.It was concluded that faba bean tannins can have a negative effect on the dietary AMEN and AMN for chicks when present at a sufficiently high dietary concentration. However, the highest dietary concentration of faba bean tannins in Expt 3 was 10·52 g/kg DM, giving a maximum daily intake of 1·03 g tannins for the two-bird experimental unit. At concentrations and intakes up to this there was no evidence to suggest that faba bean tannins had a significant adverse effect.

scholarly journals Replacement Of Fish Meal With Maggots In Broiler Diets: Effects On Performance And Nutrient Retention

2021 ◽  
Vol 20 ◽  
pp. 44-49 ◽  
Author(s):  
J. O. Atteh ◽  
F. D. Ologbenla
Keyword(s):  
Fish Meal ◽  
Nitrogen Retention ◽  
Nutrient Retention ◽  
Metabolizable Energy ◽  
Partial Replacement ◽  
Broiler Chicks ◽  
Equivalent Weight ◽  
Dietary Level ◽  
Dietary Fish ◽  
The Cost

The effects of replacing 0, 33.3, 66.7 or 100% of dietary fish meal (9%) with housefly maggots (Musca domestica. Linn) was investigated using broilers from day old to 5 weeks of age.  Increasing the dietary level of maggots reduced feed intake and weight gain while increasing the feed: gain ratio (P>0.05), There was however no significant effect of dietary maggots on mortality rate (P>0.05). Replacement of dietary fish meal with maggots caused significant reduction in nitrogen retention (P<0.05) but an increase in fat retention (P>0.05). There was no significant effect of replacing dietary fish meal with maggots on the metabolizable energy value of the diets (P>0.05).  It is concluded that maggots could replace only 33% of dietary fish meal (9%) without compromising performance and nutrient retention in broiler chicks. The cost of harvesting and processing maggots is about 15% of equivalent weight of fish meal, making even partial replacement of fishmeal with maggots economical.

scholarly journals The Effects of Replacing Groundnut Cake with Urea- Treated and Fermented Brewer’s Dried Grains on Nutrient’s Digestibility, Retention and Carcass Characteristics on Broiler Finishers

2021 ◽  
Vol 37 (1) ◽  
pp. 1-12
Author(s):  
J. O. Isikwenu ◽  
O. J. Akpodiete ◽  
S. I. Omeje ◽  
G. O. Okagbare
Keyword(s):  
Crude Protein ◽  
Nitrogen Retention ◽  
Quality Parameters ◽  
Metabolizable Energy ◽  
Broiler Chicks ◽  
Treatment Groups ◽  
Groundnut Cake ◽  
Carcass Measurement ◽  
All Treatment ◽  
Finisher Diets

The effects of replacing groundnut cake(GNC) with urea-treated and fermented brewer's dried grains (BDG) in broiler finisher diets were investigated. urea-treated and fermented BDG was used to replace GDC at 0, 25, 50, 75 and 100% levels in broiler finisher diets. Diets were formulated to be isonitrogenous and isocaloric to provide 20% crude protein and 3000 kcal/kg metabolizable energy. One hundred and ninety five thirty day old broiler chicks of Anak breed (Anak 2000 strain) were randomly allocated to five equal dietart treatments of 13 chicks per replicate and 39 chicks per treatmentand fed ad libitum in rearing cages. At the end of the 8th week, 9 broilers per treatment (3 birds per replicate) were randomly selected from the five treatment groups for metabolic study. At 8 weeks, two birds per replicate were weighed and slaughtered for carcass measurement. Nutrient digestibililty and retention were significantly (P<0.05) influenced by urea-treated and fermented BDG incorporation in the diets. Nitrogen retention values of 63.80±0.32 and 62.15±0.39% for the control and 25% replacement for the levels  of 50, 75 and 100%. Fat retention values of 97.71±0.39 and 92.49±0.66% for 75 and 100% replacement levels (P<0.05) were significantly higher than values of 53.37±2.72, 52.74±1.72, 42.54±2.37 and 42.75±2.67% for 25, 50, 75 and 100% replacement levels. Carcass quality parameters and organ weights were not significantly (P>0.05) different in all treatment groups. Mortality level (5-7%) was normal and evenly spread across all treatment groups. Results indicate that ureat-treated and fermented BDG can completely replace GNC as a plant protein source in broiler finisher diets. 

Nutritional evaluation of wheat 1. Effects of preparation on digestibility of dry matter, energy and nitrogen in pigs

1974 ◽  
Vol 19 (3) ◽  
pp. 359-365 ◽  
Author(s):  
M. Ivan ◽  
L. R. Giles ◽  
A. R. Alimon ◽  
D. J. Farrell
Keyword(s):  
Dry Matter ◽  
Nitrogen Retention ◽  
Metabolizable Energy ◽  
Apparent Digestibility ◽  
Whole Grain ◽  
Whole Wheat ◽  
Gross Energy ◽  
Dietary Components ◽  
Matter Energy ◽  
Plot Design

SUMMARY1. A split-plot design was used to study apparent digestibility of dry matter, gross energy and nitrogen of a whole grain wheat diet and processed (hammermilled, rolled or hammermilled and then steam-pelleted) wheat diets by eight small (33·9 ± 0·1 kg) and eight large (70±1·7 kg) pigs. Metabolizable energy and nitrogen retention were also studied with the small pigs.2. The processed wheat diets were superior to the whole grain wheat diet in all the parameters measured.3. There were no significant differences between the performance of pigs given the differently processed wheat diets.4. Apparent digestibility of dietary components particularly in the whole wheat diet was significantly higher when diets were given to small pigs than when given to large pigs.

The nutritive value for ruminants of a complete processed diet based on barley straw

1970 ◽  
Vol 74 (2) ◽  
pp. 311-314 ◽  
Author(s):  
F. W. Wainman ◽  
K. L. Blaxter ◽  
J. D. Pullar
Keyword(s):  
Organic Matter ◽  
Research Council ◽  
Nutritive Value ◽  
Agricultural Research ◽  
Nitrogen Retention ◽  
Metabolizable Energy ◽  
Barley Straw ◽  
Energy Value ◽  
Agricultural Research Council

SUMMARYCalorimetric experiments were made with a complete extruded diet for ruminants, ‘Ruminant Diet A’ prepared by Messrs U.K. Compound Feeds Ltd. Twelve determinations of energy and nitrogen retention were made using sheep and it was found that the diet had a metabolizable energy value of 2–32 kcal/g organic matter, and the net availabilities of its metabolizable energy were 42–7 % for fattening and 68–0 % for maintenance. These values agreed well with those predicted from equations published by the Agricultural Research Council. On a dry basis the starch equivalent was 38–3 %.

COMPARISON OF INTACT, LATE-CASTRATED, AND DIETHYLSTILBESTROL (DES)-IMPLANTED BOARS WITH BARROWS AND GILTS: NITROGEN AND ENERGY DIGESTIBILITY, NITROGEN RETENTION, CARCASS MEASUREMENTS, MUSCLE ANALYSES, AND RESIDUAL DES IN MUSCLE TISSUE

1973 ◽  
Vol 53 (3) ◽  
pp. 579-585 ◽  
Author(s):  
J. A. NEWELL ◽  
J. P. BOWLAND
Keyword(s):  
Muscle Tissue ◽  
Dry Matter ◽  
General Trend ◽  
Nitrogen Retention ◽  
Carcass Characteristics ◽  
Ash Content ◽  
Metabolizable Energy ◽  
The Other ◽  
Average Weight ◽  
Grade Index

Forty boars, eight barrows, and eight gilts were allotted in groups of four pigs each at an average weight of 13.1 kg. Metabolism studies with a portion of the animals were conducted at 15 and 50 kg liveweight. Although no statistical differences between sexes were found in these studies, barrows tended to digest more nitrogen (N) but to retain less than boars and gilts. N digestibility (DN) and retention (NR) values at 50 kg were higher than those at 15 kg. The three sexes were found to be similar in energy digestibility (DE) and metabolizable energy (ME). Significant differences were found for boars in DE and ME coefficients between the two periods, averaging 83.2 and 85.6% DE in the 15- and 50-kg periods, respectively. At 70 kg, 16 boars were implanted with 96 mg of diethylstilbestrol (DES), 16 boars were castrated, and 8 boars were left intact. Barrows had thicker backfat (P < 0.05) and lower (P < 0.05) grade index than any of the other treatments. Late-castrated boars showed a general trend to revert to the carcass characteristics of barrows but were still superior to barrows at market weight. No significant differences between treatments were found for dry matter, protein, fat, or ash content of the longissimus muscle. No residual DES was found in the muscle tissue of the implanted boars.

scholarly journals Effect of viscosity on digestion of nutrients in conventional and germ-free chicks

2000 ◽  
Vol 83 (5) ◽  
pp. 533-540 ◽  
Author(s):  
D. J. Langhout ◽  
J. B. Schutte ◽  
J. de Jong ◽  
H. Sloetjes ◽  
W. A. Verstegen ◽  
...  
Keyword(s):  
Weight Gain ◽  
Metabolizable Energy ◽  
Broiler Chicks ◽  
Food Utilization ◽  
Γ Irradiation ◽  
N Retention ◽  
Germ Free ◽  
Nutritional Effects ◽  
Digesta Viscosity

A study was conducted with conventional and germ-free broiler chicks to obtain more information on the role of the intestinal microflora in the anti-nutritive effects of NSP in broiler chicks. As the NSP source, highly methylated citrus pectin (HMC) was used at a dose level of 30 g/kg in a maize-based diet. The diets fed to the germ-free chicks were γ-irradiated, whereas those fed to the conventional chicks were not. Feeding the HMC diet to conventional birds depressed weight gain and food utilization (P < 0·05), whereas in germ-free birds only weight gain was reduced (P < 0·05). Feeding the HMC diet to conventional birds reduced digestibilities of energy and starch at the end of the jejunum. Ileal digestibilities of starch and energy were not strongly affected when birds were fed on the HMC-containing diet. Faecal digestibilities of organic matter, crude fat, starch and amino acids, N retention and metabolizable energy were reduced when conventional chicks were fed on the HMC diet. Feeding the HMC diet to germ-free birds hardly affected faecal digestibility of nutrients and N retention, whereas metabolizable energy was increased. Feeding the HMC diet to conventional or germ-free birds increased the viscosity of the digesta in the small intestine. This increase in digesta viscosity was more pronounced in conventional than in germ-free birds. The pH of ileal digesta was reduced when HMC was added to the diet of conventional chicks, but not in germ-free chicks. Feeding the HMC diet to conventional birds markedly affected morphology of the gut wall, whereas in germ-free chicks very little effect was found on gut morphology. Based on the results of the present study, it is concluded that the gastrointestinal microflora mediates the magnitude of the anti-nutritive effects of HMC in broiler chicks. However, the exact role of the microflora in chicks in the magnitude of the anti-nutritional effects of HMC could not be derived from the present study, since the results might have been influenced by γ-irradiation of the diets fed to the germ-free chicks.

The Apparent Digestibility of Nutrients and Energy Value to Pigs of Plantains (Musa Sapientum Var. Paradisiaca Linn)

2021 ◽  
Vol 1 (2) ◽  
pp. 184-191
Author(s):  
V. A. Oyenuga ◽  
B. L. Fetuga
Keyword(s):  
Crude Protein ◽  
Dry Matter ◽  
Nitrogen Retention ◽  
Basal Diet ◽  
Metabolizable Energy ◽  
Apparent Digestibility ◽  
Crude Fibre ◽  
Large White ◽  
High Dry Matter ◽  
Nitrogen Free Extract

The proximate and mineral constituents of six plantain forms, raw green plantain (RGP), cooked green plantain (CGP), raw ripe plantain (RRP), cooked ripe plantain (CRP), green plantain meal (GPM) and ripe plantain meal (RPM) were determined by chemical analysis. 24 large white barrows, weighing initially, between 40-45 kg., were used to study the apparent digestibility of nutrients, digestible energy (DE), metabolizable energy (ME), metabolizable energy corrected for nitrogen retention (ME(n) and total digestible nutrients when the plantains served as the only source of nutrients. In a second experiment ME and ME(n) were measured for the plantain forms using 28 Large White barrows, with diets in which the plantains replaced 50% of maize in a basal diet. All the plantain forms had low fat, crude fibre and crude protein content but high in nitrogen-free extract, phosphorus, potassium and Iron. Identically high dry matter (D.M.) and nitrogen-free extract (N.F.E.) digestion coefficients were obtained for all the plantain forms except RPM, which had significantly lower values. Digestion coefficients for crude protein (46.9, 53.6, 51.8, 34.3,-32.7 %), crude fibre, (46.6, 49.5, 58.7, 62.6, 56.9, 39.6 %), ether extract (55.9, 56.6, 66.9, 69.2, 54.7 and 34.6 %) for RGP, CGP, RRP, CRP, GPM and RPM respectively were considerably lower than for D.M. and N.F.E. The DE, ME ME(n) and TDN values were comparable for all plantain forms except RPM, which had significantly lower values in most cases. The fresh green plantains and green plantain meals had slightly higher energy values than the ripe plantains, even though the nutrients in the ripe plantains were better digested than in the green forms. The results are discussed in relation to variations in the relative proportions of the simple and more complex carbohydrates during ripening.

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