Effect of micronization of peas and enzyme supplementation on nutrient excretion and manure volume in growing pigs

2003 ◽  
Vol 83 (4) ◽  
pp. 749-754 ◽  
Author(s):  
Z. Zhang ◽  
C. M. Nyachoti ◽  
S. Arntfield ◽  
W. Guenter ◽  
S. Cenkowski
Keyword(s):  
Urine Volume ◽  
Dietary Treatment ◽  
Growing Pigs ◽  
Nitrogen Excretion ◽  
Pig Manure ◽  
Feed Conversion ◽  
Nitrogen And Phosphorus ◽  
Nutrient Excretion ◽  
Phosphorus Excretion ◽  
Enzyme Supplementation

The effect of micronization of peas and enzyme supplementation on performance, nitrogen and phosphorus excretion as well as manure output was investigated in a study with 12 Cotswold gilts (26.9 ± 3.6 kg initial body weight). Three diets based on barley-raw peas (control), barley-micronized peas, or barley-micronized peas plus a multi-enzyme blend were used. The study was conducted in two blocks and within a block; each diet was randomly assigned to four pigs to give a total of eight observations per diet. Pigs fed micronized peas and micronized peas plus enzyme diets had higher (P < 0.05) feed conversion than the control. Compared with the control, micronization of peas reduced (P < 0.05) wet and dry fecal output by 33 and 25%, respectively. Urine volume was not influenced (P > 0.05) by dietary treatment. Total fecal phosphorus excretion was lower (P < 0.001) in gilts fed the micronized peas or micronized peas plus enzyme diets compared with the control. Micronization of peas reduced (P < 0.05) total nitrogen excretion in pig manure by 21.5% (17.39 vs. 13.65 g d-1). In conclusion, formulating pig grower diets with micronized peas improves nitrogen and phosphorus utilization and reduces total manure volume. Key words: Pigs, nitrogen, phosphorus, manure volume, micronized peas

Effect of dietary particle size and carbohydrase and/or phytase supplementation on nitrogen and phosphorus excretion of grower pigs

2002 ◽  
Vol 82 (4) ◽  
pp. 533-540 ◽  
Author(s):  
M. A. Oryschak ◽  
P. H. Simmins ◽  
R. T. Zijlstra
Keyword(s):  
Particle Size ◽  
Nitrogen And Phosphorus ◽  
Particle Size Reduction ◽  
Total N ◽  
Nutrient Excretion ◽  
Phosphorus Excretion ◽  
Enzyme Supplementation ◽  
Dietary Treatments ◽  
Nitrogen Phosphorus ◽  
Total P

The effect of dietary particle size and enzyme supplementation on N and P excretion were investigated in a 3 × 2 × 2 factorial arrangement, with three particle sizes (400, 700, or 850 μm), two levels of a carbohydrase cocktail [0 or 444 added units (U) β-glucanase plus 1385 added U xylanase kg-1 diet], and two levels of phytase (0 or 374 added U phytase kg-1 diet), for a total of 12 dietary treatments. Diets (70% barley, 25% peas) were formulated to contain 3.25 Mcal digestible energy (DE) kg-1, 1.6 g digestible lysine Mcal-1 DE, and 1.2 g kg-1 available P. Sixty pigs (25.3 ± 1.4 kg) had restricted access (3 × maintenance DE) to feed, and five individual pig observations for each of the 12 mash diets were obtained. Reducing particle size from 700 to 400 µm reduced total P excretion 12% and increased P digestibility and retention 15% (P < 0.05), while phytase reduced total P excretion 28% and increased P digestibility and retention 42% (P < 0.01). Reducing particle size from 850 and 700 to 400 µ m decreased total N excretion 4 and 7%, respectively (P < 0.05). Carbohydrase did not affect P digestibility or excretion (P > 0.10), but increased digestibility of N and energy (P < 0.05). Carbohydrase interacted with particle size for energy digestibility (P < 0.01) and with phytase for N and energy digestibility (P < 0.05). Particle size affected N excretion and energy digestibility more than enzyme supplementation, while phytase affected P excretion more than particle size, suggesting that particle size reduction and phytase supplementation are effective to reduce nutrient excretion of grower pigs. Key words: Particle size, carbohydrase, phytase, pig, nitrogen, phosphorus

scholarly journals Genetics of residual feed intake in growing pigs: Relationships with production traits, and nitrogen and phosphorus excretion traits1

2013 ◽  
Vol 91 (6) ◽  
pp. 2542-2554 ◽  
Author(s):  
R. Saintilan ◽  
I. Mérour ◽  
L. Brossard ◽  
T. Tribout ◽  
J. Y. Dourmad ◽  
...  
Keyword(s):  
Feed Intake ◽  
Residual Feed Intake ◽  
Growing Pigs ◽  
Production Traits ◽  
Nitrogen And Phosphorus ◽  
Phosphorus Excretion

scholarly journals Performance of growing pigs fed diets containing cassava peels meal supplemented with three levels of roxazyme G2G enzyme

2020 ◽  
Vol 45 (3) ◽  
Author(s):  
O.O. Effiong ◽  
B.J. Harry
Keyword(s):  
Weight Gain ◽  
Analysis Data ◽  
Growing Pigs ◽  
Daily Weight Gain ◽  
Feed Conversion ◽  
Average Daily Weight Gain ◽  
Hematological Analysis ◽  
Enzyme Supplementation ◽  
Cassava Peels ◽  
Cassava Peel

This research was designed to evaluate the performance of growing pigs fed diets containing cassava peel meal supplemented with three (3) levels of roxazymeG2 enzyme. Fresh cassava peels were gathered, thinly spread on a concrete floor to dry out and milled prior to proximate analysis and feed formulation. Five experimental diets were formulated. Diet one had maize as main energy source, while Diets 2 to 5 had 50% of maize replaced with cassava peel meal. Diets 3, 4 and 5 were further supplemented with roxazyme G2 non starch polysaccharide enzyme at 1g/kg, 1.5g/kg and 2g/kg, respectively. A total of thirty (30) cross bred growing pigs were selected and distributed into five (5) groups on weight equalization basis with six (6) animals per group. Each group was assigned to one of the five (5) experimental diets in a completely randomized design. The growth and economy of production were monitored throughout the 56-day duration of the trial. At the end of the feeding trial, 10 mLs of blood was collected from three animals on each treatment into sample bottles with EDTA for hematological analysis. Data were subjected to analysis of variance procedures. The results revealed that the three (3) levels of dietary enzyme supplementations did not significantly (P˃0.05) influenced the average daily feed intake but influenced the average daily weight gain and the feed conversion ratio (FCR) significantly. Pigs on diets with 1.5 and 2g/kg enzyme supplementation had the highest average daily weight gain of 0.43kg while those on 2g/kg enzyme supplementation diet had the best FCR with value corresponding to 1.74. Dietary enzyme supplementation reduced (P

scholarly journals Novel transgenic pigs with enhanced growth and reduced environmental impact

eLife ◽  
2018 ◽  
Vol 7 ◽  
Author(s):  
Xianwei Zhang ◽  
Zicong Li ◽  
Huaqiang Yang ◽  
Dewu Liu ◽  
Gengyuan Cai ◽  
...  
Keyword(s):  
Environmental Impact ◽  
Dietary Treatment ◽  
Single Copy ◽  
Wild Type ◽  
Feed Conversion ◽  
Nitrogen And Phosphorus ◽  
Transgenic Pigs ◽  
Environmental Emissions ◽  
Excessive Nutrients ◽  
Feed Conversion Rate

In pig production, inefficient feed digestion causes excessive nutrients such as phosphorus and nitrogen to be released to the environment. To address the issue of environmental emissions, we established transgenic pigs harboring a single-copy quad-cistronic transgene and simultaneously expressing three microbial enzymes, β-glucanase, xylanase, and phytase in the salivary glands. All the transgenic enzymes were successfully expressed, and the digestion of non-starch polysaccharides (NSPs) and phytate in the feedstuff was enhanced. Fecal nitrogen and phosphorus outputs in the transgenic pigs were reduced by 23.2–45.8%, and growth rate improved by 23.0% (gilts) and 24.4% (boars) compared with that of age-matched wild-type littermates under the same dietary treatment. The transgenic pigs showed an 11.5–14.5% improvement in feed conversion rate compared with the wild-type pigs. These findings indicate that the transgenic pigs are promising resources for improving feed efficiency and reducing environmental impact.

scholarly journals Growth performance and bio-economics of growing pigs fed diets containing separately fermented and unfermented cassava tuber wastes

2013 ◽  
Vol 13 (59) ◽  
pp. 7957-7971
Author(s):  
SO Aro ◽  
◽  
JO Agbede ◽  
VA Aletor ◽  
AA Ashimi
Keyword(s):  
Weight Gain ◽  
Body Weight Gain ◽  
Control Diet ◽  
Live Weight ◽  
Dietary Treatment ◽  
Nutrient Digestibility ◽  
Growing Pigs ◽  
Feed Consumption ◽  
Feed Conversion ◽  
Crude Fibre

A feeding trial was conducted to investigate the performance, haematology, nutrient digestibility and economics of production of growing pigs fed diets containing differently fermented cassava starch residue (CSR) and cassava peels (CP) altogether referred to as cassava tuber wastes (CTW). The CSR and CP were each divided into three parts and processed as dry unfermented (UFCRS Diet 2; UFCP Diet 5), naturally fermented (NFCSR Diet 3; NFCP Diet 6) and microbial fermentation by inoculation (MFCSR Diet 4; MFCP Diet 7). Each part was included in a control diet (Diet 1) to replace maize at 20% dietary level to make a total of seven treatments. The final live weight (F LW), total live weight gain (TL G) and total feed consumption (TFC) of pigs fed the control diet were not significantly (p>0.05) different from those fed the test diets. However, the feed conversion ratio (FC R) of pigs fed the control was consistently lower (3.93) than those fed CSR (3.68- 3.30) and CP (3.75- 3.36) - based diets. The response of RBC, WBC, Hb and PCV to the dietary treatment varied significantly (p<0.05) with the CTW -product incorporated into the diets vizs: RBC 10 6 /mm 3 : 7.53 vs CSR (5.71- 6.26) and CP (4.71- 5.75); WBC 10 3 /mm 3 :14.84 vs CSR (9.06- 10.06) and CP (8.53- 10.90) , and PCV%: 36.75 vs CSR (35.75- 36.00) and CP (32.5- 37.00) while the MCHC and differential counts were not significantly (P>0.05) affected. Varied effects on the digestibility of major ingredients in the diets were observed with the digestibility of dry matter (DM) been enhanced : 0.49- 8.68% and 3.10- 7.48%, organic matter (OM): 1.60 -9.37% and 3.41- 8.43%, crude protein: 3.33- 6.17% and 1.18 -4.10% , and crude fibre (CF): 24.37- 30.52% and 2.34- 28.80% by CSR and CP, respectively , over the control diet . T he Mean Apparent Digestibility (MAD) for NFE (CSR 65.07%; CP 69.33%) was higher than that of the control diet (61.49%) . The cost of feed intake per pig decreased : 11.92 -12.76% and 8.38 -14.95% , cost of feed per k g body weight gain: 14.84- 22.66% and 14.84- 21.88% with enhanced gross profit increase of 19.66 -29.02% and 14.37- 26.50% in CSR - and CP -based diets, respectively. It can , therefore, be concluded that CTW products could be included in pig’s diet as an alternative to maize.

Regeneration of nitrogen and phosphorus by bluegill and gizzard shad: effect of feeding history

1995 ◽  
Vol 52 (11) ◽  
pp. 2327-2338 ◽  
Author(s):  
Martha E. Mather ◽  
Michael J. Vanni ◽  
Thomas E. Wissing ◽  
Scott A. Davis ◽  
Maynard H. Schaus
Keyword(s):  
Excretion Rate ◽  
Lepomis Macrochirus ◽  
N:P Ratio ◽  
Nitrogen Excretion ◽  
Gizzard Shad ◽  
Small Fish ◽  
Nitrogen And Phosphorus ◽  
Nutrient Excretion ◽  
N:P Ratios ◽  
Excretion Rates

We combined laboratory and field studies to experimentally assess how the effects of feeding regime and time since feeding influence nitrogen (N), phosphorus (P), and the N:P ratio excreted by two common freshwater fish, bluegill (Lepomis macrochirus) and gizzard shad (Dorosoma cepedianum). In addition, for adult gizzard shad, we modelled excretion rates as a function of the nutrient content of ingested sediment detritus. For both bluegill and gizzard shad, feeding significantly increased nutrient excretion rates and altered excreted N:P ratios. For both species, excretion rates were highest immediately after feeding and declined thereafter. Because the phosphorus excretion rate decreased more rapidly after feeding than did the nitrogen excretion rate, the excreted N:P ratio increased with time since feeding. Young-of-year gizzard shad excreted more nitrogen than adults, resulting in a higher excreted N:P ratio for these small fish. For P, predictions from our model agreed well with our experiments with gizzard shad; for N, the agreement was not as strong yet was still reasonable. In summary, N:P ratios excreted by these fish differed across species, size, and time since feeding. Variation in these factors may explain discrepancies among studies that examine both trophic interactions and nutrient budgets.

Effect of microbial enzyme supplementation on energy, amino acid digestibility and performance of pigs fed hulless barley based diets

1998 ◽  
Vol 78 (4) ◽  
pp. 625-631 ◽  
Author(s):  
S. K. Baidoo ◽  
Y. G. Liu ◽  
D. Yungblut
Keyword(s):  
Nutrient Utilization ◽  
Growing Pigs ◽  
Canola Meal ◽  
Feed Conversion ◽  
Hulless Barley ◽  
Microbial Enzyme ◽  
Indispensable Amino Acids ◽  
Gross Energy ◽  
Enzyme Supplementation ◽  
And Performance

Two experiments were conducted to investigate the influence of a microbial enzyme preparation on the digestibility and performance of starter-growing pigs fed hulless barley based diets. In the digestibility trial, eight pigs with an average initial body weight of 14.3 ± 0.4 kg initial liveweight were surgically fitted with steered ileo-cecal valve cannulas at the terminal ileum. Two hulless barley varieties (Condor and CDC Buck) were separately used as the dietary energy source (77.6%) with canola meal as the protein supplement (20%). Enzyme supplementation improved (P < 0.05) the ileal dry matter (DM) digestibility by 15.2%, gross energy (GE) by 11.0% and protein by 7.6%. The average apparent ileal digestibility of the indispensable amino acids was improved by 6.9% (P < 0.05), and of nonstarch polysaccharides (NSP) was improved by 90%. The total-tract digestibility of DM was increased by 6.2%, GE by 6% and crude protein (CP) by 9.4% (P < 0.05). Enzyme supplementation tended to enhance digestion in the small intestine instead of the hind-gut as expected. In the growth performance trial, positive responses from enzyme supplementation were observed from both mash and pelleted diets fed to 48 pigs grown from 9 to 60 kg liveweight. The ADG was improved by 8.6% (P < 0.05) and feed conversion by 8.7% (P = 0.09). Pelleting had no adverse effect on enzyme activity. The results demonstrated that the enzyme supplementation improved (P < 0.5) nutrient utilization and performance of pigs fed diets containing hulless barley. Key words: Enzyme, hulless barley, digestibility, performance, swine

scholarly journals Environmental Impacts and Their Association With Performance and Excretion Traits in Growing Pigs

2021 ◽  
Vol 8 ◽  
Author(s):  
Alessandra N. T. R. Monteiro ◽  
Ludovic Brossard ◽  
Hélène Gilbert ◽  
Jean-Yves Dourmad
Keyword(s):  
Environmental Impacts ◽  
Body Weight Gain ◽  
Selection Criterion ◽  
Growing Pigs ◽  
Nitrogen Excretion ◽  
Production Traits ◽  
Feed Conversion ◽  
Land Occupation ◽  
Feeding Programs ◽  
Feeding Program

The selection of pigs for improved production traits has been, for a long time, the major driver of pig breeding. More recently, because of the increasing concern with the environment, new selection criteria have been explored, such as nitrogen (N) excretion. However, many studies indicate that life cycle assessment (LCA) provides much better indicators of environmental impacts than excretion. Therefore, the objective of this study was to investigate, using a modeling approach, the relationships between production traits and LCA impacts of individual growing pigs calculated at the farm gate for 1 kg of body weight gain. Performances of pigs were simulated for 2-phase (2P) and precision feeding (PR), using the InraPorc population model (on 1,000 pigs). Nitrogen excretion was positively correlated with feed conversion ratio (FCR; r = +0.96), climate change (CC; r = +0.96), acidification potential (AC; r = +0.97), eutrophication potential (EU; r = +0.97), and land occupation (LO; r = +0.96), whatever the feeding program. However, FCR appeared to be a better indicator of LCA impacts, with very high and positive correlations (r &gt; +0.99) with CC, AC, EU, and LO for both feeding programs. The CC, AC, and EU impacts of pig production for PR feeding were 1.3, 10, and 7.5% lower than for 2P, respectively, but the correlations within each outcome were very similar among feeding programs. It was concluded that the use of FCR as a selection criterion in pig breeding seems to be a promising approach to associate improved performance and low environmental impact of pig fattening.

scholarly journals Effects of ractopamine hydrochloride on nutrient digestibility and nitrogen excretion of finishing beef cattle

2021 ◽  
Author(s):  
B N Harsh ◽  
B J Klatt ◽  
M J Volk ◽  
A R Green-Miller ◽  
J C McCann
Keyword(s):  
Rumen Fluid ◽  
Block Design ◽  
Dietary Treatment ◽  
Feedlot Cattle ◽  
Nutrient Digestibility ◽  
Nitrogen Excretion ◽  
Distillers Grains With Solubles ◽  
Ractopamine Hydrochloride ◽  
Urinary Nitrogen

Abstract The objective was to quantify the effects of the beta-adrenergic agonist (β-AA) ractopamine hydrochloride (Actogain, Zoetis, Parsippany, NJ) on nitrogen excretion and nutrient digestibility in feedlot cattle. In experiment 1, twelve Simmental × Angus steers were blocked by bodyweight (531 ± 16 kg) and used in a randomized complete block design. Dietary treatments included: 1) a control without β-AA (CON) or 2) 400 mg/steer/d ractopamine hydrochloride (RAC) for 35 d before slaughter. Diets contained (DM basis) 55% dry rolled corn, 20% corn silage, 15% modified wet distillers grains with solubles, and 10% supplement. For each block, total collection of feed, orts, feces and urine were conducted for two 5 d sampling periods during week 2 and 4 of RAC supplementation. No interaction (P &gt; 0.21) between treatment and collection period was observed for any parameter evaluated. Dietary treatment had no effect (P = 0.51) on DMI, but RAC had decreased fecal DM output (P = 0.04) compared with CON. Thus, RAC had greater apparent total tract DM digestibility (77.2 vs. 73.5%; P &lt; 0.01), N digestibility (72.4 vs. 69.4%; P = 0.01), and NDF digestibility (65.6 vs. 60.2%; P &lt; 0.01) than CON. Although treatment did not affect nitrogen intake (P = 0.52), RAC tended to reduce total nitrogen excretion (113.3 vs. 126.7 g/d; P = 0.10) compared with CON due to a tendency for decreased fecal nitrogen output (53.9 vs. 61.3 g/d; P = 0.10). However, dietary treatment had no effect (P = 0.53) on urinary nitrogen output or percentage of urinary nitrogen excreted as urea (P = 0.28). Experiment 2 was an in vitro experiment conducted to validate the effects of RAC on nutrient digestibility using Simmental × Angus heifers (451 ± 50 kg). Rumen fluid was collected individually by stomach tube from CON- (n = 9) and RAC-fed (n = 10) heifers to inoculate bottles containing a CON or RAC-containing substrate in a split-plot design. No interaction between rumen fluid source and in vitro substrate was observed. Greater IVDMD (P = 0.01) was observed in rumen fluid from RAC-fed heifers compared with rumen fluid from CON-fed heifers. Inclusion of RAC in the in vitro substrate increased IVDMD (P &lt; 0.01). Overall, feeding RAC increased microbial digestion of the dry-rolled corn-based finishing diet to increase total tract dry mater digestion by 5% and reduce nitrogen excretion by 10.6% in the 35 d period prior to slaughter.

scholarly journals Influence of Enzyme Supplementation in the Diets of Broiler Chickens Formulated with Different Corn Hybrids Dried at Various Temperatures

Animals ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 643
Author(s):  
Franciele C. N. Giacobbo ◽  
Cinthia Eyng ◽  
Ricardo V. Nunes ◽  
Cleison de Souza ◽  
Levy V. Teixeira ◽  
...  
Keyword(s):  
Broiler Chickens ◽  
Nutrient Digestibility ◽  
Conversion Ratio ◽  
Feed Conversion Ratio ◽  
Intestinal Morphology ◽  
Feed Conversion ◽  
Corn Hybrids ◽  
Positive Effects ◽  
Cecal Microbiota ◽  
Enzyme Supplementation

We evaluated the influence of enzymatic supplementation on the growth performance and cecal microbiota of broilers. A total of 2160 1-day-old male chicks were used in a 3 × 2 × 2 factorial arrangement (three corn hybrids, two drying temperatures −80 and 110 °C, with or without the inclusion of an enzymatic blend (amylase, xylanase, and protease) (20 birds/pen, n = 9). For all performance and digestibility parameters, we observed, in general, isolated effects of the corn hybrids and drying temperature. Birds that received the enzymatic blend in the diet showed better weight gain from 1 to 21 days (d) and better digestibility coefficients of nutrients at 42 d. Birds fed diets with corn dried at 80 °C showed a better feed conversion ratio from 1 to 42 d. At 21 d of age, enzymatic supplementation had positive effects on jejunum morphology. Enzyme supplementation increased the abundance of the phylum Tenericutes, class Bacilli and Mollicutes, reduced Clostridia, and increased the abundances of the families Lactobacillaceae, Anaeroplasmataceae, and O_RF39;F. In conclusion, the addition of amylase, xylanase, and protease led to a better nutrient digestibility, performance, and intestinal morphology. In addition, enzyme supplementation changed the diversity, composition, and predicted function of the cecal microbiota at d 21.

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