scholarly journals Grazing systems and worm control in sheep: a long-term case study involving three management systems with analysis of factors influencing faecal worm egg count

2013 ◽  
Vol 53 (8) ◽  
pp. 765 ◽  
Author(s):  
S. W. Walkden-Brown ◽  
A. F. Colvin ◽  
E. Hall ◽  
M. R. Knox ◽  
D. F. Mackay ◽  
...  
Keyword(s):  
Gastrointestinal Nematode ◽  
Experimental Period ◽  
Gastrointestinal Nematodes ◽  
Anthelmintic Treatment ◽  
Effective Control ◽  
Stocking Rate ◽  
Rotational Grazing ◽  
Treatment Frequency ◽  
Factors Influencing ◽  
Worm Control

Managing infections of sheep with gastrointestinal nematode parasites (worms) and problems of resistance to anthelmintic treatments continue to be major challenges for graziers on the Northern Tablelands of New South Wales, Australia. The whole-farmlet study of grazing enterprises undertaken by the Cicerone Project tested the broad hypotheses that compared with typical management (farmlet B), internal parasites can be more effectively managed with improved nutrition (farmlet A) or by intensive rotational grazing (farmlet C). Further aims were to identify the major sources of variation in faecal worm egg count (WEC) over the 6-year period and to examine the efficacy of the various anthelmintic treatments used during the experiment. This paper describes the management of sheep worms at the whole-farmlet level during the experiment, and analyses data from the routine WEC monitoring (5644 records) and larval differentiation tests (322 records) carried out on behalf of the Cicerone Management Board and by a doctoral candidate. It complements more detailed investigations published elsewhere. Over the period from July 2000 to December 2006, worm infections in ewes, lambs, hoggets and wethers were, with some exceptions, successfully controlled on the farmlets through a combination of regular monitoring of WEC, treatment with a wide array of anthelmintics and grazing management. Farmlet C had lower mean WEC (444 epg) and annual anthelmintic treatment frequency (3.1 treatments/year) over the whole experimental period than farmlets B (1122 epg, 4.3 treatments/year) or A (1374 epg, 4.7 treatments/year). The main factors influencing WEC were the time since the last anthelmintic treatment, and the anthelmintic used at that treatment. The magnitude of these effects dwarfed those of climatic and management factors that might be expected to influence the epidemiology of gastrointestinal nematode infections via environmental or host-mediated mechanisms. Nevertheless management factors associated with stocking rate and grazed proportion (proportion of each farmlet grazed at any one time), and climatic indicators of both temperature and moisture availability had significant effects on WEC. The results show that, in a region with Haemonchus contortus as the major sheep nematode, improved host nutrition in a higher input system (farmlet A) did not provide more effective control of gastrointestinal nematodes than typical management (farmlet B); however, it was observed that gastrointestinal nematode control was no worse on farmlet A than on farmlet B in spite of farmlet A supporting a 48% higher stocking rate by later in the trial period (2005). The study provided strong support for the proposition that intensive rotational grazing (farmlet C) provides more effective control of gastrointestinal nematodes than typical management (farmlet B) as evidenced by significantly lower WEC counts and anthelmintic treatment frequency. Tactical worm control based on routine monitoring of WEC provided adequate control of worms on all three farmlets for much of the experimental period but failed to prevent significant spikes in WEC to values associated with significant production loss on multiple occasions, and significant ewe mortality on farmlets A and B on one occasion.

scholarly journals Milk yield and composition, feed intake and stocking rate of crossbread cows in tropical grasses managed in a rotational grazing system

2010 ◽  
Vol 39 (7) ◽  
pp. 1548-1557 ◽  
Author(s):  
Nelson Massaru Fukumoto ◽  
Julio Cesar Damasceno ◽  
Fermino Deresz ◽  
Carlos Eugênio Martins ◽  
Antônio Carlos Cóser ◽  
...  
Keyword(s):  
Body Weight ◽  
Milk Yield ◽  
Dry Matter ◽  
Experimental Period ◽  
The Body ◽  
Dry Matter Intake ◽  
Panicum Maximum ◽  
Stocking Rate ◽  
Rotational Grazing ◽  
Grazing System

The objective of this study was to evaluate milk yield and composition, dry matter intake, and stocking rate in pastures with tanzania grass (Panicum maximum cv. Tanzânia), star grass (Cynodon nlemfuensis cv. Estrela-Africana), and marandu grass (Brachiaria brizantha cv. Marandu). The grasses were managed in a rotational grazing system with Holstein x Zebu crossbreed cows, with a 30-day resting period and three days of paddock occupation. The pastures were fertilized with 1,000 kg/ha/year using the 20:05:20 (NPK) formula, split in three applications during the rainy season. It was used a complete random block experimental design with three factors being studied and two replications. In the experiment, four cows/paddock were used and, when it was necessary, regulator animals were added in order to obtain a supply of 7% body weight green forage dry matter. The animals were individually fed concentrate at 2 kg/day during the experimental period. Milk yield did not differ among the three grasses, with values of 9.1; 9.1; and 8.7 kg/cow/day for pastures with tanzania grass, star grass and marandu grass, respectively. Similarly, grass did not affect milk chemical composition. Stocking rate was similar among the three grasses, with values of 4.6; 4.5 and 5.0 UA/ha for tanzania grass, star grass and marandu grass, respectively. The highest dry matter intake was observed for tanzania grass with 2.6% of the body weight while stargrass (2.3%) and marandu grass (2.4%) did not differ among each other. The highest dry matter intake on tanzania grass pasture was not reflected on milk yield per animal. Milk yield and composition and stocking rate are similar among the evaluated grasses.

scholarly journals Comparative Efficacy of Barbados Lilac, Pineapple And Benazol® Against Gastrointestinal Nematodes in Cattle

2013 ◽  
Vol 19 (1) ◽  
pp. 51-59
Author(s):  
MR Amin ◽  
M Mostofa ◽  
MA Awal ◽  
ML Sharmin
Keyword(s):  
Body Weight ◽  
Water Extract ◽  
Gastrointestinal Nematode ◽  
Experimental Period ◽  
Gastrointestinal Nematodes ◽  
The Body ◽  
Ananas Comosus ◽  
Total Leukocyte Count ◽  
Melia Azedarach ◽  
Control Group

The effect of barbados lilac (Melia azedarach, Linn., @100 mg/kg bwt. ), pineapple (Ananas comosus, Merr., @100mg/kg bwt.) and Benazol® (albendazole, @7.5 mg/kg bwt.) against natural gastrointestinal nematodes were studied in cattle. Their effect of TEC, Hb, PCV, TLC, ALT, AST and body weight were observed. Twenty four (24) naturally parasitized cattle of BAU Dairy Farm, Mymensingh were randomly divided into four groups, each consisting of six (6) cattle. Water extract of leaves of barbados lilac and pineapple were administered orally to the cattle of group A and B, respectively. Cattle of group C were treated with Benazol® orally. Cattle of group D was kept as infected control group. Fecal samples, body weight, hematological and biochemical parameters were examined before treatment and on 3rd, 10th, 17th and 28th day. A significant (p<0.01) reduction of EPG count was found following administration of barbados lilac (39.11-60.07%), pineapple (29.50-45.36%) and Benazol® (62.19-90.44%) in cattle. Whereas EPG increased significantly (p<0.01) in control group throughout the experimental period. After treatment with barbados lilac, pineapple and Benazol®, total erythrocyte count (TEC), hemoglobin (Hb) content and packed cell volume (PCV) were gradually increased significantly (p<0.01 and p<0.05) in cattle. Conversely, the total leukocyte count (TLC) were decreased significantly (p<0.01 and p<0.05) in treated cattle. The alanine aminotransferase (ALT) and aspartate aminotransferase (AST) level were not significantly changed in the cattle. The body weight was increased significantly (p<0.01 and p<0.05) in barbados lilac, pineapple and Benazol® treated cattle.In contrast, body weight was decreased in control group. The present study reveals that water extracts of barbados lilac leaves were moderately effective and pineapple leaves were relatively less effective against mixed gastrointestinal nematode infections in cattle.DOI: http://dx.doi.org/10.3329/pa.v19i1.17107 Progress. Agric. 19(1): 51 - 59, 2008 

scholarly journals Effects of neem, betel leaf, devil's tree, jute and turmeric against gastrointestinal nematodes in sheep

1970 ◽  
Vol 8 (2) ◽  
pp. 259-263 ◽  
Author(s):  
MR Amin ◽  
M Mostofa ◽  
MN Islam ◽  
MA Asgar
Keyword(s):  
Body Weight ◽  
Hematological Parameters ◽  
Water Extract ◽  
Gastrointestinal Nematode ◽  
Experimental Period ◽  
Gastrointestinal Nematodes ◽  
The Body ◽  
Control Group ◽  
Betel Leaf ◽  
Group A

Effects of neem, betel leaf, devil’s tree, jute and turmeric against natural gastrointestinal nematodes in sheep and on some hematological parameters (TEC, Hb and PCV) and body weight were studied. Thirty (30) naturally parasitized sheep were randomly divided into six groups(A, B, C, D, E and F), each consisting of five sheep. Ten percent water extract of leaves of neem, betel leaf, devil’s tree and jute were administered orally to the sheep of group A, B, C and D, respectively. Sheep of group E was treated orally with 10% water extract of rhizome of turmeric. Sheep of group F was kept as infected control group. Fecal samples, hematological parameters and body weight were examined before treatment and on 7th, 14th, 21st and 28th day. A significant (p<0.01) reduction of EPG count was found following administration of neem (37.60-47.03%), betel leaf (6.43-14.00%), devil’s tree (3.04-11.04%), jute (0.50-5.26%) and turmeric (0.46-8.30) in sheep. The EPG count of the control group (F) were significantly (p<0.01) increased up to the last day of experimental period. After treatment with neem, betel leaf, devil’s tree, jute and turmeric total erythrocyte count (TEC), hemoglobin (Hb) content and packed cell volume (PCV) were increased significantly (p<0.01 and p<0.05) in sheep. The body weight was increased significantly (p<0.01 and p<0.05) in neem, betel leaf, devil’s tree, jute and turmeric treated sheep. On the other hand, body weight was decreased in untreated control group. The present study reveal that 10% water extract of neem was moderately effective and betel leaf, devil’s tree, jute and turmeric were relatively less effective against gastrointestinal nematodes in sheep. Keywords: Neem; Betel leaf; Devil’s tree; Jute; Turmeric; Gastrointestinal nematode DOI: 10.3329/jbau.v8i2.7935 J. Bangladesh Agril. Univ. 8(2): 259-263, 2010  

scholarly journals Livestock weights in response to three whole-farmlet management systems

2013 ◽  
Vol 53 (8) ◽  
pp. 727 ◽  
Author(s):  
G. N. Hinch ◽  
J. Hoad ◽  
M. Lollback ◽  
S. Hatcher ◽  
R. Marchant ◽  
...  
Keyword(s):  
Soil Fertility ◽  
Management Strategies ◽  
Experimental Period ◽  
Supplementary Feeding ◽  
Grazing Management ◽  
Stocking Rate ◽  
Rotational Grazing ◽  
Average Value ◽  
Management Regime ◽  
Similar Range

This paper reports changes in livestock weights recorded in a whole-farmlet experiment, which aimed to examine the profitability and sustainability of three different pasture and grazing management strategies. The assessment of liveweights was considered a key component of measuring the integrated effects of the farmlet-scale treatments. The three farmlets comprised a typical management regime, which employed flexible rotational grazing over eight paddocks with moderate soil fertility (farmlet B), a system based on the same grazing management and paddock number but with higher levels of sown pasture and soil fertility (farmlet A) and a farmlet with moderate soil fertility and intensive rotational grazing over 37 paddocks (farmlet C). Early in the experimental period, there were no significant differences between farmlets in the liveweight of any class of livestock. However, from the second year onwards, as the pasture renovation, soil fertility and grazing management treatments took effect, differences in liveweight between farmlets became more apparent and significant. The stocking rate, which was treated as an emergent property of each farmlet, reached a maximum annual average value after 5 years of 12.6, 8.5 and 7.7 dry sheep equivalents (dse)/ha on farmlets A, B and C representing 84, 113 and 51% of their respective target stocking rates which were 15, 7.5 and 15 dse/ha. The liveweights of ewes, both before joining and during pregnancy, varied with year and farmlet with those on farmlets A and B tending to be significantly heavier than those on farmlet C. From 2003 to 2006, liveweights were significantly (P < 0.001) affected by a wide array of factors and their interactions including: date, ewe age, green digestible herbage, legume herbage mass, proportion of farmlet grazed, stocking rate and level of supplementary feeding. The weights of lambs/weaners/hoggets, both pre- and post-weaning, were at times also higher on farmlets A and B compared with those on farmlet C and were affected by a similar range of factors to those which affected ewe weights. Similar relative differences also applied to the liveweights of the other livestock run on the farmlets, namely wethers and non-reproductive cattle. The results suggest that stocking rate was able to be increased towards the higher target of farmlet A due to the higher level of pasture renovation and soil fertility on that farmlet, which led to high liveweights per head as well as the higher stocking rate. However, as the stocking rate increased on farmlet A, the differences between farmlets in liveweight per head diminished and the need for supplementary feeding increased. In contrast, the intensive rotational grazing practised on farmlet C did not allow the farmlet to increase its stocking rate towards its higher target. It appears that the higher proportion of each of farmlets A and B grazed at any one time allowed all classes of livestock to reach higher liveweights per head than on farmlet C, due presumably to the greater proportion of those two farmlets grazed at any one time.

scholarly journals Effect of level of infection by gastrointestinal nematodes and anthelmintic treatment on milk yield in dairy sheep

Parasite ◽  
2021 ◽  
Vol 28 ◽  
pp. 71
Author(s):  
María Martínez-Valladares ◽  
Elías Martín-Ramos ◽  
Myriam Esteban-Ballesteros ◽  
Rafael Balaña-Fouce ◽  
Francisco Antonio Rojo-Vázquez
Keyword(s):  
Milk Yield ◽  
Gastrointestinal Nematode ◽  
Treated Group ◽  
Gastrointestinal Nematodes ◽  
Anthelmintic Treatment ◽  
Faecal Egg Count ◽  
Total Milk ◽  
The Mean ◽  
Low Levels ◽  
High Level

The effects of gastrointestinal nematode infections and anthelmintic treatment on milk yields was compared between flocks with a low level (LL) of eggs per gram (epg) before partum and with a high level (HL). Faecal egg count reduction tests (FECRTs) were carried out before partum comparing a treated group with netobimin with an untreated group. Ewes belonging to LL flocks produced 55.4% more milk than ewes from HL flocks. A negative correlation was found between the mean epg before treatment and the mean milk yield per flock (r = −0.860; p < 0.01). However, treated ewes produced 10.1% more milk than untreated ewes in LL flocks, although in HL flocks, treated ewes produced less milk (−2.7%). The treatment of flocks even with low levels of infection can improve the milk yields. In this study, the epg before partum had a greater influence on total milk yield than the anthelmintic treatment.

GRAZING SYSTEMS FOR EWES AND LAMBS

1962 ◽  
Vol 42 (2) ◽  
pp. 139-144 ◽  
Author(s):  
F. W. Calder ◽  
J. W. G. Nicholson ◽  
H. M. Cunningham
Keyword(s):  
Experimental Period ◽  
The Other ◽  
Grazing Management ◽  
Management Systems ◽  
Stocking Rate ◽  
Rotational Grazing ◽  
Creep Feeding ◽  
Free Range ◽  
Internal Parasites ◽  
Grazing Systems

Two experiments were conducted to compare forward creep grazing of lambs with other grazing management systems for ewes and lambs. In the first experiment, forward creep grazing with and without creep feeding of concentrates was compared with rotational grazing, using 7 ewes with single lambs per plot of [Formula: see text] acres. The first lambs reached market weight by the 57th day of the experiment, at which time the average lamb gains were higher on the creep grazed-creep fed groups, but there was no difference in the gains on the other two systems. The experiment was continued for 35 days and during this period the lamb gains on the creep grazed plots were higher than on the rotationally grazed areas. This later period coincided with a period of reduced herbage growth due to below normal precipitation. The average daily gains for the entire experimental period were.45,.51 and.57 pounds for rotational, creep, and creep fed-creep grazed systems respectively.In the second experiment, forward creep grazing was compared with rotational grazing and free range grazing, using a higher stocking rate of 8 ewes and 10 lambs per plot. The average daily gains for the experiment were.38,.40 and.34 pounds for rotational, creep grazed, and free range systems respectively. The differences between grazing systems were not statistically significant at P = 0.05. Both the ewe and lamb gains were lower on the free-range system than on the other systems. The ewe gains were higher on the rotationally grazed areas than the forward creep grazed areas in both experiments. This indicates that forward creep grazing of lambs can be advantageous under conditions where herbage is abundant.Evidence obtained from helminth ova counts on fecal samples, and examination of representative digestive tracts of the lambs marketed, indicated that the forward creep grazing of lambs reduced but did not prevent a build-up of internal parasites.

The influence of stocking rate and mixed grazing of Angora goats and Merino sheep on animal and pasture production in southern Australia. 4. Gastrointestinal parasitism

2014 ◽  
Vol 54 (5) ◽  
pp. 587 ◽  
Author(s):  
B. A. McGregor ◽  
P. J. A. Presidente ◽  
N. J. Campbell
Keyword(s):  
Management Practices ◽  
Gastrointestinal Nematode ◽  
Gastrointestinal Nematodes ◽  
Stocking Rate ◽  
Sources Of Information ◽  
Pasture Production ◽  
Merino Sheep ◽  
Sheep And Goats ◽  
Gastrointestinal Parasitism ◽  
The Impact

Gastrointestinal nematodes limit the growth, production and welfare of goats but there are few reliable sources of information for recommending management practices across flocks. The effects of animal species (Angora goat, Merino sheep, mixed-grazed goats and mixed-grazed sheep at the ratio of 1 : 1) and stocking rate (SR: 7.5, 10, 12.5 animals/ha) on gastrointestinal parasitism were determined in a replicated experiment on improved annual temperate pastures in southern Australia, from 1981 to 1984. Detailed monitoring of gastrointestinal nematodes was undertaken on animals before, during (five times per year) and at the conclusion of studies using faecal strongyle egg counts (WEC) and total worm counts. Sheep had a greater proportion of nematodes as Teladorsagia spp. and goats a greater incidence of Trichostrongylus spp. Both goats and sheep developed resistance to Nematodirus spp. during the experiment. WEC was similar in goats and sheep at the start of the experimental period but, thereafter, was consistently greater in goats than in sheep. While WEC was highly related to total worm count, the regressions for sheep and goats were different. Increasing the SR increased the WEC of goats and mixed-grazed goats but not of sheep. During the experiment, WEC declined at 7 and 10 animals/ha but increased at 12.5/ha. Mixed grazing with goats provided beneficial effects for sheep at all stocking rates, but the effects for goats were dependent on the stocking rate, being beneficial at 7.5 and 10/ha but harmful at 12.5/ha. The WEC of separately grazed goats were generally higher than the WEC of mixed grazed goats. The WEC of mixed sheep were lower than those of separately grazed sheep. During the experiment, the WEC of mixed grazed sheep declined faster than the WEC of separately grazed sheep but the WEC of separately grazed goats at 12.5/ha and of mixed grazed goats at 10 and 12.5/ha increased. Under the environmental and pastoral conditions examined, Angora wether goats should not be grazed at SR above those recommended for wether sheep. In the present study, the impact of gastrointestinal-nematode infections in goats was reduced at lower SR. Further, mixed grazing of Angora wether goats with wether sheep at or below the recommended SR resulted in reduced gastrointestinal parasitism for both sheep and goats, compared with monospecific grazing conditions. Goats did not represent a gastrointestinal-nematode hazard to sheep.

scholarly journals Integrated overview of results from a farmlet experiment which compared the effects of pasture inputs and grazing management on profitability and sustainability

2013 ◽  
Vol 53 (8) ◽  
pp. 841 ◽  
Author(s):  
J. M. Scott ◽  
K. Behrendt ◽  
A. Colvin ◽  
F. Scott ◽  
L. M. Shakhane ◽  
...  
Keyword(s):  
Soil Fertility ◽  
Experimental Period ◽  
Perennial Grasses ◽  
High Rate ◽  
Stocking Rate ◽  
Negative Consequences ◽  
Rotational Grazing ◽  
Gross Margin ◽  
Wool Production ◽  
Positive Effects

The Cicerone Project conducted a grazed farmlet experiment on the Northern Tablelands of New South Wales, Australia, from July 2000 to December 2006, to address questions raised by local graziers concerning how they might improve the profitability and sustainability of their grazing enterprises. This unreplicated experiment examined three management systems at a whole-farmlet scale. The control farmlet (farmlet B) represented typical management for the region, with flexible rotational grazing and moderate inputs. A second farmlet (farmlet A) also used flexible rotational grazing but had a higher level of pasture renovation and soil fertility, while the third farmlet (farmlet C) had the same moderate inputs as farmlet B but employed intensive rotational grazing. The present paper provides an integrated overview of the results collated from component papers and discusses the inferences that can be drawn from what was a complex, agroecosystem experiment. The measurements recorded both early and late in the experiment were tabulated for each of the farmlets and compared with each other as relative proportions, allowing visual presentation on a common, indexed scale. Because of equivalent starting conditions, there was little difference between farmlets early in the experimental period (2000–01) across a wide array of measured parameters, including herbage mass, potential pasture growth rate, liveweight, wool production per head, stocking rate, gross margin and equity. Although the experiment experienced drier-than-average conditions, marked differences emerged among farmlets over time, due to the effects of treatments. During the latter half of the experimental period (2003–06), farmlet A showed numerous positive and a few negative consequences of the higher rate of pasture renovation and increased soil fertility compared with the other two farmlets. While intensive rotational grazing resulted in superior control of gastrointestinal nematodes and slightly finer wool, this system had few effects on pastures and no positive effects on sheep liveweights, wool production or stocking rate. Whereas farmlet A showed higher gross margins, it had a negative and lower short-term cash position than did farmlets B and C, due largely to the artificially high rate of pasture renovation undertaken on this farmlet during the experiment. Although farmlet B had the highest cash position at the end of the experiment, this came at a cost of the declining quality of its pastures. Modelling of the farmlet systems allowed the results to be considered over the longer timeframes needed to assess sustainability. Thus, returns on investment were compared over realistic amortisation periods and produced outcomes based on long-term climatic expectations which were compared with those that arose under the drier-than-average conditions experienced during the experimental period. The main factors responsible for lifting the productivity of farmlet A were the sowing of temperate species and increased soil fertility, which enhanced the amount of legume and increased pasture quality and potential pasture growth. The factor that affected farmlet C most was the low proportion of the farmlet grazed at any one time, with high stock density imposed during grazing, which decreased feed intake quality. The paper concludes that more profitable and sustainable outcomes are most likely to arise from grazing enterprises that are proactively managed towards optimal outcomes by maintaining sufficient desirable perennial grasses with adequate legume content, enhancing soil fertility and employing flexible rotational grazing.

scholarly journals Gastrointestinal nematode infection in Purunã heifers raised in conventional and integrated livestock forest systems

2020 ◽  
Vol 21 ◽  
Author(s):  
Barbara Haline Buss BAIAK ◽  
Jennifer Mayara GASPARINA ◽  
José Luis MOLETTA ◽  
Raquel Abdallah da ROCHA
Keyword(s):  
Dry Matter ◽  
Statistical Difference ◽  
Production Systems ◽  
Gastrointestinal Nematode ◽  
Experimental Period ◽  
Gastrointestinal Nematodes ◽  
Nematode Infection ◽  
Infective Larvae ◽  
Fecal Egg Count ◽  
Significant Difference

ABSTRACT The objective of the study was to evaluate the resistance of Purunã heifers to nematode infection in two different production systems. In this study, 29 heifers were divided into eight pickets, four in an integrated livestock forest system (ILF) and four in a conventional pasture system (CPS). Feces were collected monthly to perform the fecal egg count (FEC), evaluate the degree of infection caused by gastrointestinal nematodes in cattle, and carry out coproculture, to identify the genus of the parasites. In addition, animal body weight was determined to evaluate performance. On the same day as the measurements, forage samples were collected to determine the number of infective larvae per kilogram of dry matter (L3/kg DM) in each picket. There were no statistical differences in FECs between the treatments. Although no significant differences were observed in the recovery of L3/kg DM, the contamination was higher in the ILF compared to CPS in December (344 and 37.7 L3/kg DM, respectively) and January (312 and 0 L3/kg DM, respectively). In March, the CPS (321 L3/kg DM) presented higher contamination than the ILF (80.7 L3/kg DM), but with no statistical difference. The weight of the animals was higher for the CPS compared to the ILF treatment throughout the whole experimental period, with a significant difference in December (343.30 kg and 314.08 kg, respectively). The present study demonstrated numerically that greater numbers of L3 were recovered from pasture of the ILF, which could have resulted in higher contamination and lower performance of the animals.

scholarly journals The Roles of Labor and Profitability in Choosing a Grazing Strategy for Beef Production in the U.S. Gulf Coast Region

2008 ◽  
Vol 40 (1) ◽  
pp. 301-313 ◽  
Author(s):  
Jeffrey M. Gillespie ◽  
Wayne Wyatt ◽  
Brad Venuto ◽  
David Blouin ◽  
Robert Boucher
Keyword(s):  
Gulf Coast ◽  
Stocking Rate ◽  
Rotational Grazing ◽  
Data Set ◽  
Time And Motion ◽  
Continuous Grazing ◽  
Labor Requirements ◽  
Gulf Coast Region ◽  
Coast Region ◽  
The U.S

Comparisons are made concerning labor required and profitability associated with continuous grazing at three stocking rates and rotational grazing at a high stocking rate in the U.S. Gulf Coast region. A unique data set was collected using a time and motion study method to determine labor requirements. Profits are lowest for low stocking rate–continuous grazing and high stocking rate–rotational grazing. Total labor and labor in three specific categories are greater on per acre and/or per cow bases with rotational-grazing than with continuous-grazing strategies. These results help to explain relatively low adoption rates of rotational grazing in the region.

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