Variations of Ammonia Emissions from Cattle Operations: Effects of Air Temperature and Dietary Crude Protein Content

2017 ◽  
Vol 60 (1) ◽  
pp. 215-227 ◽  
Keyword(s):  
Protein Content ◽  
Air Temperature ◽  
Crude Protein ◽  
Ammonia Emissions ◽  
Crude Protein Content ◽  
Dietary Crude Protein

Growth and food utilization of the Australian short-finned eel, Anguilla australis australis (Richardson) given paired iso-energetic diets with increasing crude protein content

2006 ◽  
Vol 82 (2) ◽  
pp. 169-174 ◽  
Author(s):  
K. Engin ◽  
C. G. Carter
Keyword(s):  
Protein Content ◽  
Crude Protein ◽  
High Energy ◽  
Whole Body ◽  
Food Utilization ◽  
Crude Protein Content ◽  
Efficiency Ratio ◽  
Body Protein ◽  
Anguilla Australis ◽  
Dietary Crude Protein

AbstractThis study investigated the effects of 100 g/kg increments of crude protein (approx. 250 (P25) to 550 (P55) g/kg of crude protein) in paired iso-energetic diets on the growth performance of the juvenile Australian short-finned eel (1·83 (s.e. 0·01) g average wet weight). The highest growth response was obtained with treatment P45 followed by P35, P55 and P25. It appeared that food efficiency ratio (FER) increased with increasing crude protein content in low energy diets (treatments P25 and P35). However, 100 g/kg increase in dietary crude protein content (from 450 to 550 kg crude protein per kg diet) in high energy diets resulted in lower FER for treatment P55 than for the treatment P45. The protein efficiency ratio (PER, %) was higher in low protein:low energy diets (treatments P25 and P35) than that of high protein:high energy diets (treatments P45 and P55). The protein productive values (PPV, %) for treatments followed a similar trend to PER in this experiment. The lowest PPV was obtained by the treatment P55 and it was significantly different from that of the other three treatments. A proportional increase in dietary crude protein content in paired iso-energetic diets did not significantly change the whole body protein content. However, a small increase in whole body protein content with increasing dietary crude protein in each group was detected. In conclusion, the present study showed protein sparing effects of lipids and carbohydrates in the diets of the short-finned eel. Further studies specifically investigating the effects of dietary carbohydrate to lipid ratios at different protein levels would improve diet formulation and reduce nutrient impact in intensive recirculation systems.

scholarly journals Control of ammonia emissions in naturally ventilated dairy cattle facilities in Portugal

2014 ◽  
Vol 34 (3) ◽  
pp. 600-609 ◽  
Author(s):  
José Pereira ◽  
Henrique Trindade
Keyword(s):  
Dairy Cattle ◽  
Environmental Monitoring ◽  
Protein Content ◽  
Milk Production ◽  
Crude Protein ◽  
Ammonia Emissions ◽  
Crude Protein Content ◽  
Nh3 Emission ◽  
Simple Implementation ◽  
Mitigation Techniques

We conducted a study of the processes associated to NH3 emission in naturally ventilated dairy cattle facilities, having described factors that regulate NH3 emission, as well as methodologies for measuring these emissions at these facilities. Appropriate techniques to mitigate NH3 emission in facilities located in regions with warm climates were also identified. The most effective mitigation techniques with simple implementation include strategies associated to: (i) installation design and flooring, which lead to reduced emissions, (ii) excreta pre-excretion, namely the use of diets with optimized crude protein content and increased milk production at farm level; and (iii) excreta post-excretion, particularly by changing the conditions of environmental monitoring within the premises, practice introduction or additive application in the management of excreta deposited on floors.

Effect of dietary crude protein content on skatole concentration in boar serum

Meat Science ◽  
1992 ◽  
Vol 31 (4) ◽  
pp. 473-479 ◽  
Author(s):  
R.S. Lin ◽  
M.W. Orcutt ◽  
R.D. Allrich ◽  
M.D. Judge
Keyword(s):  
Protein Content ◽  
Crude Protein ◽  
Crude Protein Content ◽  
Dietary Crude Protein

scholarly journals Milk production of Norwegian Red dairy cows on silages presumed either low or optimal in dietary crude protein content

2018 ◽  
Vol 214 ◽  
pp. 42-50 ◽  
Author(s):  
Alemayehu Kidane ◽  
Margareth Øverland ◽  
Liv Torunn Mydland ◽  
Egil Prestløkken
Keyword(s):  
Dairy Cows ◽  
Protein Content ◽  
Milk Production ◽  
Crude Protein ◽  
Crude Protein Content ◽  
Dietary Crude Protein
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