Impact of the 2023 Central Utah Grazing Expo
Trenton WildeEric ThackerRyan LarsenChad M PageBurdette BarkerMark NelsonMatt PalmerSteven PriceJacob HadfieldKalen TaylorEthan Gilliam
0
Citation
0
Reference
10
Related Paper
Effects of different grazing patterns on plant community characteristics were investigated in Hulunbeier meadow steppe,five treatments,i.e.SA1(heavy grazing in summer,moderate grazing in autumn),SA2(heavy grazing in summer and autumn),SA3(moderate grazing in summer,heavy grazing in autumn),SA4(moderate grazing in summer and autumn) and SA5(no grazing).The results indicated that the density,height and coverage of most plants in SA3 grazing paddocks were significantly higher than other grazing paddocks;Margalef richness and Shannon-wiener index in SA3 and SA5 grazing paddocks were higher than other grazing paddocks;Simpson and Pielou index of grazing paddocks were not significantly different.The total standing crop of SA1 and SA3 grazing paddocks were higher than the others under grazing paddocks;The vegetative features was relatively well in SA3 paddocks under the different treatment by seasonal grazing control.
Standing crop
Steppe
Cite
Citations (1)
This experiment was carried out in the artificial pasture on grassland demonstration pastoral area of Grassland Research Institute of Chinese Academy of Agricultural Sciences during June to September in 2010.The experiment was designed as rotational grazing group and continuous grazing group,there were three treatments in both rotational grazing group and continuous grazing group,there were 5 rotational grazing areas in every rotational grazing treatment,rotational grazing period was 30 days.The results showed that the effect of different grazing system on pasture dry matter yield was not significant;and that the effect of different grazing system on the nutrition of forage grass was significant(P0.05).The crude protein content of the forage grass in rotational grazing group was higher than that in continuous grazing group,while the NDF content in rotational grazing group was lower than that in continuous grazing group.There were no significant differences in weight gain of sheep between rotational grazing group and continuous grazing group.
Cattle grazing
Cite
Citations (0)
The sheep grazing experiment was carried out in an Inner Mongolian enclosed recovery steppe of the natural grazing pastures in warm season to study the dynamic changes of forage cell wall constituents and nutrients value with the chemical assay and enzymatic analysis.The comparison of grazing systems(control,continuous grazing,4plots rotational grazing,5plots rotational grazing,and 6plots rotational grazing)was made at two levels of grazing intensities(1.0,1.4hm2/un.sh)to create 10treatments and 34pairs of sheep(ewes and their lambs)were grazed over a period of 4months.The results showed,in the whole warm season,forage nutrition contents in different grazing groups were mainly affected by grazing systems significantly on recovering degraded grassland(P0.05).Forage OCW contents in control were significantly higher than those in continuous and rotational grazing groups,then no obvious differences were shown between different rotational grazing groups.The forage high digestibility part(OCC+ Oa)in rotational grazing treatment was obtained high and was significantly higher than continuous grazing treatment.Forage in control showed more Oaand less Ob,and continuous grazing treatment showed reverse trend.There was no obvious difference between forage Oaand Obin rotational grazing groups respectively.The forages obtained higher TDN and ME in rotational grazing groups,especially in August.In the whole warm season,forages in 6plots rotational grazing groups contained the highest nutrients and showed the highest nutritional value.
Steppe
Cite
Citations (0)
The sheep grazing experiment was carried out on the enclosed recovering natural grazing pastures of Dalinuorizhen of Keshiketeng Banner in Inner Mongolia in warm season to study the dynamic changes of forage nutrition contents.Different grazing systems(control,continuous grazing,4 plots rotational grazing,5 plots rotational grazing,and 6 plots rotational grazing) and two kinds of grazing intensities was made by using 2×5 complete random try design.The results showed that initial moisture,CP,EE and Ash contents in forage on no grazing area were higher than that on rotational grazing area and continuous grazing area,ADF and NDF contents were significant lower than that on grazing area;with the continuation of grazing seasons,the decline rate of forage nutritional value on no grazing area was the lowest,next the rotational grazing,last the continuous grazing;there were no significant differences in forage nutrition content among 4 plot rotation,5 plot rotation and 6 plot rotation.Grazing system and grazing intensity had interactive effect on forage nutrition contents.Therefore,rotational grazing showed superiority that with continuation of forage growth seasons,forage nutrition value could be preserved better under proper grazing intensity.
Cite
Citations (1)
Environmental impacts in the Seomjin River Basin were evaluated based on watershed characteristics and climate change using Representative Concentration Pathway 4.5 and 8.5 scenarios provided by the Korea Meteorological Administration. Future dam and tributary inflow from 2000 to 2100 were estimated using a hydrology model. Dam safety evaluation and downstream flow duration curve analyses were performed using a hydraulic structure operation model based on hydrology model flow results. Water quality trends were analyzed through a seasonal Kendall test method using 19 years of water quality data. Dam discharge, tributary inflow, and water quality estimated by hydrology, hydraulic structure operation, and water quality model were used to analyze future influences on water quality trends. New guidelines for managing river environments and climate change issues are provided, allowing a preemptive response. The inflow increase during the flood season was smaller than that during the dry season because of climate change. Furthermore, the water stage of Seomjin or Juam Dam exceeded the designed flood level. It is therefore necessary to study the long-term effects and changes in water quality with regards to future flow rate changes.
Inflow
Dry season
Cite
Citations (6)
Hectare
Allowance (engineering)
Cite
Citations (26)
Abstract The resting and grazing components of grazing management cycles as practised in South Africa are evaluated from the points of view of objective and effect. While the desirability of resting for seeding and an increase in vigour is recognized, little is known of the optimum duration and frequency of rests in the various types of grazing. The upper limit of camp numbers per group of animals beyond which an increase in resting benefit is only slight appears to be approximately six. While continuous grazing is generally believed to be detrimental to sward composition because of selective grazing, it seems that this effect is due rather to incorrect stocking rates than continuous grazing per se. Rotational grazing does, however, offer a means of attaining higher stocking rates without detrimental effects. High Utilization Grazing and High Production Grazing are two different methods of applying rotational grazing which have different objectives and different effects. The most suitable method to use in any situation depends on the nature of the sward and the reaction of the component species to defoliation. However, both methods require multi‐camp systems for best results.
Stocking rate
Cite
Citations (34)
In spring 1952, a trial was laid down at Hurley to compare the botanical effects of five grazing treatments upon a low‐fertility downland permanent pasture. The treatments were: dose and lenient rotational cattle grazing, close rotational sheep grazing and continuous grazing by cattle and by sheep. The trial was concluded in autumn 1955. Continuous cattle grazing and close rotational cattle grazing resulted in a sward with a high proportion of forbs. With sheep under the same grazing systems, grasses predominated. An intermediate grass/forb balance was attained under lenient rotational cattle grazing. Legumes contributed more under rotational grazing than under continuous grazing. The grazing treatments most favourable to the major species were: For creeping bent—both sheep grazing treatments; for ribwort plantain—all cattle grazing treatments; for white clover—all rotational grazing treatments; for cocksfoot—lenient rotational cattle grazing; for ox‐eye daisy—close rotational cattle grazing; for red fescue—lenient rotational cattle grazing and continuous sheep grazing. Bulbous buttercup and rough‐stalked meadow grass showed no significant response to differential grazing treatments. The relative degree of consumption by stock of individual species was estimated by comparing the yields from matched pairs of groups of shoots harvested before and after each grazing spell (rotational treatments) or of areas protected from and exposed to grazing (continuous treatments). A close relationship was established between the intensity of grazing experienced by species and their final status in the swards. Accessibility appeared to be as important as palatability in determining the degree to which individual species were grazed. The resulting swards differed only slightly in agronomic quality. The lack of any clear advantage from rotational grazing was attributed to low levels of plant nutrients, since these probably limited the development of the more valuable grasses and of white clover.
Cattle grazing
Cite
Citations (21)
1. Day-grazing to Protect Sheep against stray dogs was compared with usual all-day-grazing from 13 July 1978 for 81 days. 8 male lambs (about 5 months old) were alloted to both treatments. A commercial concentrate was offered to the half of them (about 250g/head daily). The day-grazing lambs were grazed from 6 a.m. to 6 p.m. for the first 42 days and from 8 a.m. to 4 p.m. for the last 39 days.2. The day-grazing lambs grazed actively. The maximum grazing time of the day-grazing lambs without concentrate reached to 9.8 hours at 12-hour day-grazing and 7.8 hour at 8-hour day-grazing.3. Average daily gains of lambs in the groups of all-day-grazing without concentrate, all-day-grazing with concentrate. day-grazing without concentrate and day-grazing with concentrate were 169g, 206g. 118g and 188g, respectively.4. Although the day-grazing lambs without concentrate were 44.5kg of final body weight, 17.5kg of carcass weight, 45.8 % of dressing percentage and 5.3mm of fat thickness, the day-grazing lambs with concentrate were similare to the all-day-grazing lambs in terms of carcass characteristic. Then the results indicated that day-grazing method would not be suitable for fat-lamb production if lambs were raised without concentrate.
Cite
Citations (0)
1. Four trials on methods of bloat-prevention vare described: ( a ) A comparison of ‘break’ grazing and normal ‘rotational’ grazing without restriction of feed in either case. Break grazing observations covered two and five breaks per day. ( b ) A comparison of these two systems where ‘break’ grazing involved restriction of area available to the cows, and ‘breaks’ varied from seven to eleven per day. ( c ) Comparison of ‘off and on’ grazing with normal rotational methods in an attempt to force changes in grazing pattern. ( d ) Comparison of the same pasture grazed at different lengths under rotational grazing methods. 2. Grazing behaviour and degree of bloat were noted. 3. In general, the results showed that, irrespective of number of breaks, break grazing with or without restriction gave no effective control of bloat. 4. There were definite indications that a strictly enforced system of ‘off and on’ grazing could afford considerable practical control. 5. Long feed proved definitely safer than feed of the same botanical composition grazed at shorter stages of growth. 6. It was found that cows on potentially dangerous grass had short grazing times with few periods of intense activity. Thus, the oft-stated opinion that bloat is caused by cows eating greedily of dangerous pastures was not substantiated. On the contrary, cows on such pasture showed marked reluctance in their grazing activity. 7. Bloat-producing swards were also associated with reduced rumination time, even in respect to cows showing no symptoms. Bloated cows showed generally very low rumination times. 8. Many of these observations were made on identical twins. From the similarity in their behaviour, it can be concluded that inheritance is an important factor affecting the occurrence of bloat amongst cows grazing the same herbage. 9. In the early stages of bloat, ruminal movement and belching increased in frequency and intensity. This is contrary to the theory that bloat is due to rumen atony. Atony was observed only in the advanced stages of the trouble.
Cattle grazing
Cite
Citations (25)