Evaluation of some factors involved in reducing browsing damage to eucalypt trees by sheep

1994 ◽  
Vol 34 (5) ◽  
pp. 601 ◽  
Author(s):  
PJ Haines ◽  
AB Bell ◽  
LP Thatcher

These experiments evaluated in northeastern Victoria the factors affecting the severity of browsing damage to eucalypts by sheep. We aimed to develop management options for integrating sheep grazing in agroforestry systems. One-year-old tree seedlings were planted into annual pasture and grazed at high stocking rates (44 sheep/ha) for up to 1 week when the pasture was abundant. In experiments 1 and 2, crossbred weaners almost totally defoliated Eucalyptus camaldulensis (river red gum) seedlings after 96 h grazing; damage from older Merino wethers was minimal. Of the 4 eucalypt species tested for relative acceptability or palatability to crossbred weaners, E. camaldulensis was the most heavily browsed and E. globulus spp. bicostata (southern blue gum), least. The height of the pasture immediately surrounding the seedlings, and therefore visibility of the seedling to the sheep, did not affect browsing extent. In experiment 3, potential repellents were applied either on the ground around E. camaldulensis seedlings or sprinkled on the foliage. Six repellants provided short-term protection from crossbred weaner sheep; Replex 1 and 3, and egg and paint were the most effective. After 4 days grazing, seedlings treated with Replex 3 had sustained 24% mean browsing damage compared with 90% for the control.


1967 ◽  
Vol 7 (24) ◽  
pp. 17 ◽  
Author(s):  
RM Moore ◽  
RJ Hutchings

A description is given of the circumstances in which sudden deaths, now considered to be due to poisoning by tryptamine alkaloids, occurred among sheep grazing Phalaris faberosa L. in the Australian Capital Territory between 1960 and 1965. Mortalities usually occurred in autumn and early winter on pastures that, at the time, were pronouncedly Phalaris dominant. Concentrations of nitrate nitrogen were high in toxic pastures indicating the possibility of a positive relationship between levels of nitrate nitrogen and tryptamine alkaloids in Phalaris. There was a higher proportion of deaths among sheep grazing at low than at high stocking rates. Field evidence indicated that deaths were more likely on deferred and on rotationally grazed than on continuously grazed pastures. Effects of dosing sheep with cobalt chloride and of fasting them for 48 hours before access to a toxic Phalaris pasture were investigated in a short term experiment in 1965. Nearly twenty per cent of the sheep died during the five days that they were on Phalaris pastures. Deaths occurred among fed and fasting sheep. Mortality rates were higher among the hungry sheep but differences due to prior feeding were not statistically significant. Dosing with cobalt chloride at rates higher than those reported effective for chronic Phalaris staggers did not prevent sudden deaths.



Author(s):  
J.E. Radcliffe

A grazing management trial in North Canterbury. compares the effects on burnt gorse, of goats or sheep grazed alone, or in mixtures with two goats equivalent to one sheep, with either rotational grazing or set stocking. Also, sheep alone are mob stocked on burnt gorse, and goats alone, set stocked on unburnt gorse. Goats alone at stocking rates up to 35/ha and a sheep/goat mixture which is rotationally grazed, have reduced gorse to negligible proportions after two years, although relatively few burnt gorse stumps have yet died. Gorse control has been less successful where a sheep/goat mixture has been set stocked or where sheep have been mob stocked at 2001ha. The least effective treatments have been sheep either set stocked or rotationally grazed at up to 17,5/ha. Stands of dense unburnt gorse up to 2m high were reduced from 66% gorse cover to 7% using 44 goats/ha set stocked for one year. Stocking rates of up to IO goats/ha had little effect on land with 50% gorse cover, but 30 goats/ha reduced gorse to 5% cover in the subsequent year. The persistence of five grass species ('Grasslands Nui' perennial ryegrass, 'Grasslands Wana' and 'Grasslands Apanui'cocksfoot, 'Massey Basyn' Yorkshire fog and browntop) and their abilities to suppress gorse, were compared under rotational and set stocked goat managements. After two years, there were no significant differences among grasses under rotational grazing, but browntop had become significantly moresuccessful than Apanui cocksfoot, under set stocking. Gorse cover was-=&% in all grass species treatments, including the unsown control plots, with no significant differences between set stocking and rotational grazing. Keywords: Gorse, goats, sheep, grazing management, ryegrass, cocksfoot, Yorkshire fog, browntop.



VASA ◽  
2012 ◽  
Vol 41 (2) ◽  
pp. 120-124 ◽  
Author(s):  
Asciutto ◽  
Lindblad

Background: The aim of this study is to report the short-term results of catheter-directed foam sclerotherapy (CDFS) in the treatment of axial saphenous vein incompetence. Patients and methods: Data of all patients undergoing CDFS for symptomatic primary incompetence of the great or small saphenous vein were prospectively collected. Treatment results in terms of occlusion rate and patients’ grade of satisfaction were analysed. All successfully treated patients underwent clinical and duplex follow-up examinations one year postoperatively. Results: Between September 2006 and September 2010, 357 limbs (337 patients) were treated with CDFS at our institution. Based on the CEAP classification, 64 were allocated to clinical class C3 , 128 to class C4, 102 to class C5 and 63 to class C6. Of the 188 patients who completed the one year follow up examination, 67 % had a complete and 14 % a near complete obliteration of the treated vessel. An ulcer-healing rate of 54 % was detected. 92 % of the patients were satisfied with the results of treatment. We registered six cases of thrombophlebitis and two cases of venous thromboembolism, all requiring treatment. Conclusions: The short-term results of CDFS in patients with axial vein incompetence are acceptable in terms of occlusion and complications rates.



2020 ◽  
pp. 20-25
Author(s):  
Denise Sackett ◽  
Tala Dajani ◽  
David Shoup ◽  
Uzoma Ikonne

The benefits of breastfeeding are well established. The World Health Organization and the Centers for Disease Control and Prevention recommend that mothers breastfeed infants for at least one year, but most children are not breastfed that long because of many factors. Breastfeeding mothers face many challenges to continued breastfeeding, including medical conditions that arise during this period, such as postpartum depression and lactational mastitis. Because of a perceived lack of consistent guidance on medication safety, it can be difficult for the family physician to treat these conditions while encouraging mothers to continue breastfeeding. The purpose of the current review is to summarize and clarify treatment options for the osteopathic family physician treating lactating mothers. We specifically focus on the pharmacological management of contraception, postpartum depression, and lactational mastitis.



2018 ◽  
Vol 2 (S1) ◽  
pp. e000125
Author(s):  
Khyati Vaja ◽  
Mukesh Suvera

Aims and Objectives: To know the most common surgical problems in pediatric patients presented with inguino-scrotal swellings and management done routinely. Methodology: This study was carried out in the department of general surgery, Sharadaben hospital and pediatric surgery of VS hospital, Ahmedabad. The cases were studied for a period of about one year (January, 2017 to Dec, 2017) and all children below 12 years of age, presenting to us with inguinoscrotal swellings were included in this study. The information was analysed in terms of age, diagnosis, procedure carried out and outcome. Results: Amongst the 150 children under the age of 12 years, 143 patients were males and 7 were females. Among these 150, 52 cases were of hydrocoele, 70 cases of hernia (of which 63 were males and 7 were females), 25 cases of undescended testis and 3 cases of epididymo orchitis were documented. All cases underwent simple herniotomy for hernia and hydrocoele, orchidopexy for undescended testis. The length of hospital stay ranged from 2-4 days with mean of 2.46 days. 11 children in the study were documented to have short term complications, all of which were recognised in the hospital and managed with good results. Conclusion: Hernia and Hydrocoele in children are often congenital and diagnosed clinically (history and examination). Indirect inguinal hernia are more common than other groin hernias. Open herniotomy is the operation of choice for inguinal hernia in children.



Diabetes ◽  
1984 ◽  
Vol 33 (10) ◽  
pp. 995-1001 ◽  
Author(s):  
K. Perlman ◽  
R. M. Ehrlich ◽  
R. M. Filler ◽  
A. M. Albisser


1989 ◽  
Vol 20 (3) ◽  
pp. 119-128 ◽  
Author(s):  
N. Bhana

The objective of this study is to determine whether companies listed on the Johannesburg Stock Exchange overreacted to unexpected favourable and unfavourable company-specific news events during the period 1970 - 1984. The JSE appears to be inefficient in reacting to the announcement of unfavourable news; economically significant abnormal returns up to one year following the event are observed. The JSE does not appear to overreact to news of a favourable nature, there is only weak evidence of short-term overreaction. The selling pressure caused by panic selling could depress prices well below levels justified by the unfavourable news. The magnitude of the overreaction to unfavourable news is sufficient to enable astute investors to outperform the market by taking positions in these securities. Knowledge of the pattern of market overreaction can also be of value to investors for transactions that are to take place anyway.



2021 ◽  
Vol 13 (13) ◽  
pp. 7007
Author(s):  
Habtamu Nebere ◽  
Degefa Tolossa ◽  
Amare Bantider

In Ethiopia, the practice of land management started three decades ago in order to address the problem of land degradation and to further boost agricultural production. However, the impact of land management practices in curbing land degradation problems and improving the productivity of the agricultural sector is insignificant. Various empirical works have previously identified the determinants of the adoption rate of land management practices. However, the sustainability of land management practices after adoption, and the various factors that control the sustainability of implemented land management practices, are not well addressed. This study analyzed the factors affecting the sustainability of land management practices after implementation in Mecha Woreda, northwestern Ethiopia. The study used 378 sample respondents, selected by a systematic random sampling technique. Binary logistic regression was used to analyze the quantitative data, while the qualitative data were qualitatively and concurrently analyzed with the quantitative data. The sustained supply of fodder from the implemented land management practices, as well as improved cattle breed, increases the sustainability of the implemented land management practices. While lack of agreement in the community, lack of enforcing community bylaws, open cattle grazing, lack of benefits of implemented land management practices, acting as barrier for farming practices, poor participation of household heads during planning and decision-making processes, as well as the lack of short-term benefits, reduce the sustainability of the implemented land management practices. Thus, it is better to allow for the full participation of household heads in planning and decision-making processes to bring practical and visible results in land management practices. In addition, recognizing short-term benefits to compensate the land lost in constructing land management structures must be the strategy in land management practices. Finally, reducing the number of cattle and practicing stall feeding is helpful both for the sustainability of land management practices and the productivity of cattle. In line with this, fast-growing fodder grass species have to be introduced for household heads to grow on land management structures and communal grazing fields for stall feeding.



2021 ◽  
pp. 021849232110068
Author(s):  
Simon CY Chow ◽  
Jacky YK Ho ◽  
Micky WT Kwok ◽  
Takuya Fujikawa ◽  
Kevin Lim ◽  
...  

Background Coronary endarterectomy aims to improve completeness of revascularization in patients with occluded coronary vessels. The benefits of coronary endarterectomy remain uncertain. The aim of this study was to evaluate short-term surgical outcomes and factors affecting graft patency post-coronary endarterectomy. Methods Between 2009 and 2019, 81 consecutive patients who had coronary endarterectomy done were evaluated for their perioperative and early results. A total of 36 patients with follow-up coronary studies were included in patency analysis. Mortality rates, major adverse cardiac and cerebrovascular events, and graft patency were outcomes of interest. Survival and risk factor analysis were performed with Kaplan–Meier and logistic regression analysis. Results The average age of the cohort was 61.9 ± 9.29 years. Complete revascularization rate was 95.4% post-coronary endarterectomy. The 30-day and 1-year mortality was 2.5 and 6.2%, respectively. One-year major adverse cardiac and cerebrovascular events rate was 11.1%. Periprocedural myocardial infarction rate was 7.4%. Three patients required repeat revascularization within a mean follow-up duration of 49.6 ± 36.5 months. Overall graft patency was 89.2% at 20.2 months and graft patency post-coronary endarterectomy was 85.4%. Arterial grafts showed 100% patency. Vein grafts to endarterectomized obtuse marginal branch had patency rates of 33.3%. Multiple endarterectomies were associated with worse one-year major adverse cardiac and cerebrovascular events (OR: 28.6 ± 1.16; P = 0.003). Conclusions Coronary endarterectomy facilitates completeness of revascularization and does not increase early mortality. Graft patency post-coronary endarterectomy on obtuse marginal artery was suboptimal. Judicious use of coronary endarterectomy should be practiced to balance the need of completeness of revascularization against the risk of myocardial infarction.



2017 ◽  
Vol 35 (0) ◽  
Author(s):  
J. IQBAL ◽  
H.A. RAUF ◽  
A.N. SHAH ◽  
B. SHAHZAD ◽  
M.A Bukhari

ABSTRACT Selection of tree species under agroforestry systems is crucial to sustain the productivity of a crop. In present study, allelopathic effects of the leaf litters of 5 trees named Rose wood (Dalbergia sissoo), Guava (Pisidium guajava), Eucalyptus (Eucalyptus camaldulensis), Sacred fig (Ficus religiosa) and Jaman (Syzygium cumini) species on wheat growth and yield was examined. Leaf litter of each tress species was mixed in soil with two doses @ 100 and 200 g of leaves of each species per pot. Higher shoot length, shoot dry weight, number of spikelets per spike and biological yield were recorded in 200 g sun dried Jaman (Syzygium cumini) leaves. Total number of tillers per plant and number of ears per plant were higher under the application of Eucalyptus camaldulensis leaves (200 g sun dried) as compared to other treatments. Spike length, grain yield per pot, number of grains per pot and harvest index were maximum in 200 g sun-dried Sacred fig (Ficu sreligiosa) leaves. Majority of the parameters were promoted at lower doses of leaves per pot, however, at higher doses they started inhibiting the growth and grain yield of wheat.



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