Prediction of fecal nitrogen and phosphorus excretion for Chinese Holstein lactating dairy cows1

2017 ◽  
Vol 95 (8) ◽  
pp. 3487-3496
Author(s):  
Q. B. Qu ◽  
P. Yang ◽  
R. Zhao ◽  
S. L. Zhi ◽  
Z. W. Zhai ◽  
...  
Keyword(s):  
Nitrogen And Phosphorus ◽  
Chinese Holstein ◽  
Fecal Nitrogen ◽  
Phosphorus Excretion

Prediction of fecal nitrogen and phosphorus excretion for Chinese Holstein lactating dairy cows

2017 ◽  
Vol 95 (8) ◽  
pp. 3487 ◽  
Author(s):  
Q. B. Qu ◽  
P. Yang ◽  
R. Zhao ◽  
S. L. Zhi ◽  
Z. W. Zhai ◽  
...  
Keyword(s):  
Dairy Cows ◽  
Nitrogen And Phosphorus ◽  
Chinese Holstein ◽  
Fecal Nitrogen ◽  
Phosphorus Excretion ◽  
Lactating Dairy Cows

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

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

Environment-friendly swine feed formulation to reduce nitrogen and phosphorus excretion

1993 ◽  
Vol 8 (3) ◽  
pp. 128-132 ◽  
Author(s):  
Mark S. Honeyman
Keyword(s):  
Amino Acids ◽  
Arable Land ◽  
Swine Manure ◽  
Phosphorus Concentration ◽  
Available Phosphorus ◽  
Nitrogen And Phosphorus ◽  
Feed Formulation ◽  
Phosphorus Excretion ◽  
Swine Operations ◽  
Crystalline Amino Acids

AbstractThe nutrient composition of swine excreta can be altered by manipulating the composition of the pig's diet Several approaches are reviewed: feeding according to the pig's growth phase, formulation according to the feed's digestible amino acids, use of crystalline amino acids, the ideal protein approach, formulation according to available phosphorus, and the addition ofphytase enzymes. Each has the potential to lower nitrogen or phosphorus excretion levels. Together they can dramatically reduce the nitrogen and phosphorus concentration of swine manure, which could be a major advantage in regions with a high density of swine or for swine operations with limited access to arable land. However, the value of the swine manure would be much less as a fertilizer because these two elements are important plant nutrients.

On the Nutrition and Metabolism of Zooplankton VII. Seasonal Survey of Nitrogen and Phosphorus Excretion by Calanus in the Clyde Sea-Area

1970 ◽  
Vol 50 (2) ◽  
pp. 525-560 ◽  
Author(s):  
E. I. Butler ◽  
E. D. S. Corner ◽  
S. M. Marshall
Keyword(s):  
Calanus Finmarchicus ◽  
Soluble Form ◽  
Plant Food ◽  
Detailed Data ◽  
Nitrogen And Phosphorus ◽  
Present Survey ◽  
Short Supply ◽  
Phosphorus Excretion ◽  
Clyde Sea ◽  
Sea Area

In a recent study (Butler, Corner & Marshall, 1969) it was found that the excretion of nitrogen and phosphorus in soluble form by Calanus finmarchicus caught at Garroch Head in the Clyde sea-area was significantly higher in spring when plant food was plentiful, than in autumn when plant food was in relatively short supply. The present survey has extended this earlier study to include more detailed data at all times of the year, particular attention being paid to the spring diatom increase of 1969 when plant food in the sea near Garroch Head rose above the level which Beklemishev (1962) regards as inducing superfluous feeding, a wasteful process partially involving the inefficient assimilation of foodstuffs (see ‘Discussion’, p. 549).

Using Inraporc to Reduce Nitrogen and Phosphorus Excretion

2009 ◽  
Vol 2008 (1) ◽  
pp. 179-194
Author(s):  
Jaap Van Milgen ◽  
Ludovic Brossard ◽  
Alain Valancogne ◽  
Jean-Yves Dourmad
Keyword(s):  
Nitrogen And Phosphorus ◽  
Phosphorus Excretion

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

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