scholarly journals Influence of mineral fertilization on some biological and productive indicators of natural meadow of Agrostis capillaris-Festuca fallax type in the Rhodope Mountains (Southern Bulgaria)

2012 ◽  
Vol 28 (3) ◽  
pp. 613-622
Author(s):  
Ya. Kozhouharov ◽  
V. Lingorski
Keyword(s):  
Protein Content ◽  
Crude Protein ◽  
Crude Protein Content ◽  
Agrostis Capillaris ◽  
Mineral Fertilization ◽  
Clear Tendency ◽  
Chemical Indicators ◽  
Nitrogen Free Extract ◽  
Dry Biomass ◽  
Positive Effect

The experiment with natural meadow of Agrostis capillaris - Festuca fallax type in Rhodope Mountains (Smolyan region, Southern Bulgaria) shows that according to fertilization variants there is a clear tendency towards earlier start of active vegetation and its next phenophases. Most and almost equal amounts of dry biomass (4.38 and 4.31 t.ha-1) were reported in fertilization with N160P80K80 and N160P80, which exceeded the unfertilized control by 128.12 and 124.48%, respectively. Compared with unfertilized variant, the crude protein content increased in all fertilizing variants, as in complete mineral fertilization with N80-160 accumulates the crudest protein - respectively 314 g.kg-1 and 318 g.kg-1. As regards to other studying chemical indicators of the forage (crude fiber, crude fat, crude ash and nitrogen-free extract substances) the mineral fertilization also had an expressed positive effect.

scholarly journals Chemical composition of some plants used as feed for rabbits in Bauchi metropolis

2021 ◽  
Vol 30 (1) ◽  
pp. 32-36
Author(s):  
B. K Musa
Keyword(s):  
Chemical Composition ◽  
Protein Content ◽  
Crude Protein ◽  
Dry Season ◽  
Nutrient Composition ◽  
Crude Protein Content ◽  
Nitrogen Free Extract

The study examined the nutrient composition of twelve plants species used as feed in Bauchi metropolis. They were collected during the month of April which is considered the peak of the dry season. The plants were divided into four groups: Trees, grasses, leguminous herbs, and non-leguminous herbs. The result showed that the crude protein content ranged from 13.61% for the leguminous herbs to 17.9% for the non-leguminous herbs. The result also showed that the plants have light nitrogen free extract and mineral requirement of rabbits with little supplementation especially during the dry season when there is acute shortage of feeds.

scholarly journals Management system and mineral nitrogen rate impact on the barley grain composition and its nutritional value for ruminants

2011 ◽  
Vol 48 (No. 10) ◽  
pp. 463-470
Author(s):  
B. Čeh Brežnik ◽  
I. Šantavec ◽  
A. Tajnšek
Keyword(s):  
Protein Content ◽  
Crude Protein ◽  
Nutritive Value ◽  
Barley Grain ◽  
Crude Protein Content ◽  
Grain Composition ◽  
Mineral N ◽  
Nitrogen Free Extract ◽  
Extract Content ◽  
N Rates

Many factors, most notably climate, soil, genotype and fertilising, can influence barley grain composition and its nutritive value. The aim of the research was to evaluate the impact of mineral N rate in different management systems in the static long-term experiment with three years field rotation of grain maize, wheat and barley on the chemical composition of winter barley and its nutritive value for ruminants. Crude protein content and metabolizable crude protein content were increasing with increased mineral N rates. Higher yield meant lower crude protein and metabolizable crude protein content in all mineral N rates. The average crude protein content of barley grain, presented in DLG tables (1997), which is 12.4%, was in MM and SM reached by fertilising rate 110 kg N/ha. A significant impact of mineral N fertilising on crude ash, ether extract and crude fibre content could not be confirmed, nitrogen-free extract content was decreasing with increased mineral N rates. A significant impact of the management system on the Weende analysis parameters, net energy for lactation, metabolizable energy and metabolizable crude protein could not be confirmed. At both analyses a significant impact of the season was confirmed on crude protein content and nitrogen-free extract content. Although the protein content was increasing with increased mineral N rate from 9.2–14.2% (for 35%) ME content and NEL content did not significantly differ considering mineral N rate; ME/ha and NEL/ha increasing with increased mineral N rates was the result of the yield increasing with increased mineral N rates.

Early productivity and crude protein content of establishing forage swards composed of combinations of native grass and legume species in mixed-grassland ecoregions

2013 ◽  
Vol 93 (3) ◽  
pp. 445-454 ◽  
Author(s):  
Jenalee M. Mischkolz ◽  
Michael P. Schellenberg ◽  
Eric G. Lamb
Keyword(s):  
Protein Content ◽  
Crude Protein ◽  
Plant Density ◽  
Warm Season ◽  
Forage Yield ◽  
Schizachyrium Scoparium ◽  
Legume Species ◽  
Crude Protein Content ◽  
Native Grass ◽  
Western Wheatgrass

Mischkolz, J. M., Schellenberg, M. P. and Lamb, E. G. 2013. Early productivity and crude protein content of establishing forage swards composed of combinations of native grass and legume species in mixed-grassland ecoregions. Can. J. Plant Sci. 93: 445–454. We evaluated the early establishment productivity of forage swards of native, perennial, cool and warm season grasses, and legumes as they have the potential to provide non-invasive, productive, and drought resistant rangelands. Seven species with agronomic potential and a broad native geographic distribution were selected for testing including: nodding brome [Bromus anomalus (Coult.)], blue bunch wheatgrass [Pseudoregneria spicata (Pursh)], western wheatgrass [Pascopyrum smithii (Rydb.)], side oats grama [Bouteloua curtipendula (Michx.)], little blue stem [Schizachyrium scoparium (Michx.)], purple prairie clover [Dalea purpurea (Vent.)], and white prairie clover [Dalea candida (Willd.)]. Forage swards, including all seven monocultures, 21 two-species mixtures and a mixture with all species, were planted in two sites, Saskatoon and Swift Current, Saskatchewan. Western wheatgrass (WWG) had the highest overall plant density and the strongest effect on the forage yield of the forage swards; however, productivity and crude protein content were not reduced when other species were also included in the forage sward. Dalea spp. did not establish as well as the other species, but had the highest crude protein concentrations. This work provides insight into forage sward development at the establishment stage; additional work is required to determine long-term species impacts for well established forage swards.

99 Relationship between crude protein content and larval growth in Tenebrio molitor

2021 ◽  
Vol 12 (1) ◽  
pp. 78
Author(s):  
Kerensa Hawkey ◽  
Jon Stubberfield ◽  
Tim Parr ◽  
John Brameld ◽  
Andrew Salter
Keyword(s):  
Protein Content ◽  
Crude Protein ◽  
Larval Growth ◽  
Tenebrio Molitor ◽  
Crude Protein Content

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.

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