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PubMed2004

A systematic review of interventions to prevent childhood farm injuries.

OBJECTIVE: The goal of the study was to systematically review the global body of evidence surrounding the effectiveness of interventions for the prevention of acute pediatric agricultural injuries. A specific focus was the effectiveness of the North American Guidelines for Children's Agricultural Tasks. METHODS: Two reviewers independently screened studies and applied inclusion criteria on the basis of searches of 17 bibliographic databases (eg, Medline and Embase). We also screened reference lists of relevant studies and contacted experts in the area. Studies were included if they represented primary research, a comparison group was used, the study population included children or the intervention was directly applicable to children, and objective outcomes were reported. Two reviewers independently assessed the methodologic quality of included studies with the Downs and Black checklist. A qualitative analysis was performed because of extensive heterogeneity among studies. RESULTS: We included 23 controlled studies, ie, 4 randomized, controlled trials, 5 controlled trials, and 14 quasiexperimental or observational studies. Only 8 of the relevant studies were published in peer-reviewed journals. School-based programs appeared to be effective at increasing short-term knowledge acquisition; outcomes were enhanced with active, hands-on participation, as opposed to passive activities. Safety day camps showed positive results for knowledge acquisition. Tractor training programs and community- and farm-based interventions showed mixed results. Studies examining the North American Guidelines for Children's Agricultural Tasks suggested that uptake improves if dissemination is accompanied by a farm visit from a safety specialist or if information about child development principles is provided in conjunction with the guidelines. CONCLUSIONS: There is a lack of randomized, controlled trials and community-based trials in this area. Studies primarily examined intermediate outcomes, such as knowledge acquisition; few studies evaluated changes in injury rates. The interventions targeted at children and youths that were evaluated focused on educational interventions. There is both the need and potential for the development and evaluation of injury control interventions for children, particularly programs addressing lethal injuries to young/preschool-aged children.

Accident Prevention↗

PubMed2002

Evidence based vaccinology.

Evidence based vaccinology (EBV) is the identification and use of the best evidence in making and implementing decisions during all of the stages of the life of a vaccine, including pre-licensure vaccine development and post-licensure manufacture and research, and utilization of the vaccine for disease control. Vaccines, unlike most pharmaceuticals, are in a continuous process of development both before and after licensure. Changes in biologics manufacturing technology and changes that vaccines induce in population and disease biology lead to periodic review of regimens (and sometimes dosage) based on changing immunologic data or public perceptions relevant to vaccine safety and effectiveness. EBV includes the use of evidence based medicine (EBM) both in clinical trials and in national disease containment programs. The rationale for EBV is that the highest evidentiary standards are required to maintain a rigorous scientific basis of vaccine quality control in manufacture and to ensure valid determination of vaccine efficacy, field effectiveness and safety profiles (including post-licensure safety monitoring), cost-benefit analyses, and risk:benefit ratios. EBV is increasingly based on statistically validated, clearly defined laboratory, manufacturing, clinical and epidemiological research methods and procedures, codified as good laboratory practices (GLP), good manufacturing practices (GMP), good clinical research practices (GCRP) and in clinical and public health practice (good vaccination practices, GVP). Implementation demands many data-driven decisions made by a spectrum of specialists pre- and post-licensure, and is essential to maintaining public confidence in vaccines.

Clinical Trials as Topic↗

PubMed1998

Parental stress, psychosocial problems and responsiveness in help-seeking parents with small (2-45 months old) children.

Experienced parental stress in 75 mothers and 65 fathers seeking help for their young child (M = 14.5 months; SD = 9.4 months) in a Specialist Child Health Centre was examined and related to child problem load, psychosocial problems and parental problems in responding to the child's signals and demands. Maternal stress level was compared with a population-based sample of 1500 mothers with children of similar ages. The measure of parental stress was a revised Swedish version of the American Parenting Stress Index (Parent Domain). Mothers in the clinical sample indicated higher levels of parental stress compared to fathers in the same families and to mothers in the comparison sample. A clear association was found between higher stress and a global clinical assessment of parental unresponsiveness to the child. Child problem load was associated with mothers' overall stress level. A clinical estimate of the parents' psychosocial situation was also associated with mothers' and fathers' stress level, and gave a large unique contribution to the variability in mothers' stress scores. It was concluded that focus in intervention programs should be on the whole family, and that the father should be seen as a resource that might well be more involved in the caretaking of the child. The study also clearly demonstrated the discriminant and construct validity of the parental stress instrument.

Adult↗

PubMed2003

Specialist nurse supervised in-hospital titration to target dose ACE inhibitor--is it safe and feasible in a community heart failure population?

BACKGROUND: Recently published guidelines from the ESC and practical recommendations from an international group of experts support the up-titration of ACE inhibitors at 1- to 2-week intervals. Observance of these guidelines could contribute to the under-dosing of ACE inhibitors at discharge in patients admitted with heart failure. Specialist heart failure nurse supervision of ACE inhibitor titration during the in-hospital stay could be a safe and effective means of avoiding this problem. OBJECTIVE: This observational study examines the feasibility of specialist heart failure nurse supervised rapid titration of ACE inhibition to at least target dose in sequential, class IV heart failure patients admitted to the cardiology service with left ventricular failure and not previously treated with an ACE inhibitor. METHODS: Fifty-two patients (mean age 71.9+/-11.6 years) were initiated on perindopril and titrated to maximally tolerated dose during the in-hospital phase. Indices of renal function (creatinine, urea, potassium) and systolic blood pressure were observed at baseline and at discharge from hospital and at 3 months. Lengths of stay and titration intervals were recorded. RESULTS: The mean length of stay was 10.3+/-7.7 days and 98% of patients achieved at least target dose of perindopril before discharge. The average time to titration to final dose was 5.5+/-4.2 days. Systolic blood pressure decreased significantly from 132+/-28 mmHg on admission to 117+/-18 mmHg on discharge. Mean baseline urea, creatinine and potassium did not change from admission to discharge (urea 8.4+/-2.5 to 9.2+/-3.9 mmol/l, P=0.15; creatinine 122.7+/-30.3 to 122.4+/-35.4 micromol/l, P=0.93; potassium 4.0+/-0.5 to 4.0+/-0.3 mEq/l, P=0.86). No significant changes were observed in these parameters at 12 weeks. There were no recorded incidences of symptomatic hypotension or progressive renal dysfunction even in patients (n=25) with evidence of chronic renal impairment (creatinine >120 micromol/l). CONCLUSIONS: Specialist heart failure nurse supervised initiation and rapid in-hospital titration of ACE inhibitor to at least target dose is feasible and safe in a severe heart failure population admitted with class IV heart failure. Routine application of this approach may help avoid under-dosing of ACE inhibitors without increasing length of hospital stay, and may reduce outpatient visits to heart failure clinics for titration.

Aged↗

PubMed2005

The association of ambulatory care with breast cancer stage at diagnosis among Medicare beneficiaries.

OBJECTIVE: Although nearly all elderly Americans are insured through Medicare, there is substantial variation in their use of services, which may influence detection of serious illnesses. We examined outpatient care in the 2 years before breast cancer diagnosis to identify women at high risk for limited care and assess the relationship of the physicians seen and number of visits with stage at diagnosis. DESIGN: Retrospective cohort study using cancer registry and Medicare claims data. PATIENTS: Population-based sample of 11,291 women aged > or =67 diagnosed with breast cancer during 1995 to 1996. MEASUREMENTS AND MAIN RESULTS: Ten percent of women had no visits or saw only physicians other than primary care physicians or medical specialists in the 2 years before diagnosis. Such women were more often unmarried, living in urban areas or areas with low median incomes (all P> or =.01). Overall, 11.2% were diagnosed with advanced (stage III/IV) cancer. The adjusted rate was highest among women with no visits (36.2%) or with visits to physicians other than primary care physicians or medical specialists (15.3%) compared to women with visits to either a primary care physician (8.6%) or medical specialist (9.4%) or both (7.8%) (P<.001). The rate of advanced cancer also decreased with increasing number of visits (P<.001). CONCLUSIONS: Even within this insured population, many elderly women had limited or no outpatient care in the 2 years before breast cancer diagnosis, and these women had a markedly increased risk of advanced-stage diagnosis. These women, many of whom were unmarried and living in poor and urban areas, may benefit from targeted outreach or coverage for preventive care visits.

Aged↗

PubMed1997

Sex workers and the control of sexually transmitted disease.

OBJECTIVES: To describe and assess measures to control sexually transmitted diseases (STDs) among sex workers and their partners. METHODS: A review of medical, historical and social literature, focusing on selected cases. RESULTS: Measures to control disease in sex workers today are often prompted by concerns about HIV transmission. However, the literature shows that prostitution varies from one place and time to another, together with the risk of sexually transmitted disease. A broad social definition of prostitution rather than a narrow reference to levels of sexual activity is important for effective disease control, as an understanding of the relation between social disadvantage and sexual activity enables the provision of occupational services that sex workers actually want and use. Social prejudice and legal sanctions cause some sex workers and their partners to avoid even the most appropriate and accessible specialist services. Therefore targeted programmes can only complement, and not replace, general measures to control STDs, which are developed for other social groups or the local population as a whole. CONCLUSIONS: Sex workers and sex work differ from one place to another and so a single model for STD control is inappropriate. None the less, occupational health risks suggest a general need for specialist services. Where these do not compound the disadvantages that sex workers already suffer, medical services are likely to offer significant benefits in prevention, early diagnosis, and treatment of STDs. As the stigma of prostitution leads many people to remain invisible to services, a general health infrastructure and anti-discriminatory measures will be equally important to effective disease control.

Delivery of Health Care↗

PubMed2000

[Consensus on care for the users of the Maintenance Program with Methadone at the health centers of the province of Cádiz].

OBJECTIVES: To reach a consensus on primary care actions concerning transmissible illnesses in users of the methadone maintenance programme. To promote coordination between levels. To find the needs of primary care professionals. DESIGN: Qualitative study based on the nominal group technique. SETTING: Cádiz province, including primary care districts, NHS hospitals and county drug-dependency centres. PARTICIPANTS: 76 health professionals: two doctors and a nurse from each health centre, selected for their experience and motivation; hospital specialists in preventive medicine and internal medicine also with experience and motivation, and with knowledge of primary care; a doctor from each county drug-dependency centre, chosen by the Provincial Drug-Dependency Management. INTERVENTIONS: The study had two phases: a) nominal group technique with homogeneous groups for each professional environment; b) modified nominal group with heterogeneous groups of professionals from all environments by hospital areas. MEASUREMENTS AND MAIN RESULTS: The final result of the study was the overall consensus in the four areas. The prioritized activities focused on "recruitment and study of patients and contacts", "educational and health promotion interventions", "immunisation programme", "monitoring therapy compliance", and "unified record of actions". What was needed to put into practice the interventions was agreed by consensus. CONCLUSIONS: Consensus techniques are a useful tool for planning primary care activities. A high degree of reproducibility can be reached if the participants are properly selected. Restrictions in being able to introduce some of the agreed interventions could be avoided with user participation and involvement of the health authorities.

Humans↗

PubMed2005

The future prospects of Lithuanian family physicians: a 10-year forecasting study.

BACKGROUND: When health care reform was started in 1991, the physician workforce in Lithuania was dominated by specialists, and the specialty of family physician (FP) did not exist at all. During fifteen years of Lithuania's independence this specialty evolved rapidly and over 1,900 FPs were trained or retrained. Since 2003, the Lithuanian health care sector has undergone restructuring to optimize the network of health care institutions as well as the delivery of services; specific attention has been paid to the development of services provided by FPs, with more health care services shifted from the hospital level to the primary health care level. In this paper we analyze if an adequate workforce of FPs will be available in the future to take over new emerging tasks. METHODS: A computer spreadsheet simulation model was used to project the supply of FPs in 2006-2015. The supply was projected according to three scenarios, which took into account different rates of retirement, migration and drop out from training. In addition different population projections and enrollment numbers in residency programs were also considered. Three requirement scenarios were made using different approaches. In the first scenario we used the requirement estimated by a panel of experts using the Delphi technique. The second scenario was based on the number of visits to FPs in 2003 and took into account the goal to increase the number of visits. The third scenario was based on the determination that one FP should serve no more than 2,000 inhabitants. The three scenarios for the projection of supply were compared with the three requirement scenarios. RESULTS: The supply of family physicians will be higher in 2015 compared to 2005 according to all projection scenarios. The largest differences in the supply scenarios were caused by different migration rates, enrollment numbers to training programs and the retirement age. The second supply scenario, which took into account 1.1% annual migration rate, stable enrollment to residency programs and later retirement, appears to be the most probable. The first requirement scenario, which was based on the opinion of well-informed key experts in the field, appears to be the best reflection of FP requirements; however none of the supply scenarios considered would satisfy these requirements. CONCLUSION: Despite the rapid expansion of the FP workforce during the last fifteen years, ten-year forecasts of supply and requirement indicate that the number of FPs in 2015 will not be sufficient. The annual enrollment in residency training programs should be increased by at least 20% for the next three years. Accurate year-by-year monitoring of the workforce is crucial in order to prevent future shortages and to maintain the desired family physician workforce.

Adult↗

PubMed1995

Influence of simulated microgravity on the exercise performance of Fischer 344 rats.

Measurements from mission specialists after space flights or from subjects subjected to head down tilt experiments have demonstrated a decrease in exercise performance. Similar decreases have been reported for rats that have participated in simulated microgravity studies using the head down-tail suspended method of Morey-Holton (HDS). Because it is unclear whether older animal populations would exhibit similar responses, we undertook a HDS study with Fischer 344 male rats.

Aging↗

PubMed2005

Collaboration between Oregon's chronic disease programs and Medicaid to decrease smoking among Medicaid-insured Oregonians with asthma.

BACKGROUND: Environmental tobacco smoke is a leading environmental asthma trigger and has been linked to the development of asthma in children and adults. Smoking cessation and reduced exposure to secondhand tobacco smoke are key components of asthma management. We describe a partnership involving two state agencies and 14 health plans; the goal of the partnership was to decrease smoking and exposure to environmental tobacco smoke among Medicaid-insured Oregonians with asthma. CONTEXT: Oregon's asthma rate is higher than that of the national population, and approximately one third of Oregonians with asthma smoke. The Health Promotion and Chronic Disease Prevention Program (HPCDP) in the Oregon Department of Human Services has collaborated with the Office of Medical Assistance Programs (OMAP) to promote preventive care at the population level. METHODS: Two HPCDP programs--the Oregon Asthma Program and the Oregon Tobacco Prevention and Education Program--worked with OMAP to launch the statewide Asthma-Tobacco Integration Project in 2003. A primary focus of the project is the development of partnerships among health plans, health care providers, and large health care organizations to integrate asthma management and smoking control through systems innovations and provider education. OMAP and its participating health plans also decided to focus cessation efforts on its members with chronic diseases. In addition, HPCDP has collaborated with OMAP to distribute educational tools and information about tobacco's impact on asthma morbidity to Oregon's health care providers who serve low-income Oregonians. CONSEQUENCES: The partnership between OMAP and HPCDP program staff members has allowed them to discuss problems, leverage resources, and obtain support for many public health initiatives. In addition, OMAP-HPCDP collaboration on educational workshops and outreach to health care providers has helped convince quality improvement specialists and administrators about the importance of addressing smoking among patients with asthma. The Asthma-Tobacco Integration Project has also led to formative research aimed at increasing community involvement in promoting tobacco-free environments. INTERPRETATION: Collaboration between HPCDP and OMAP has been an important factor in Oregon's successful smoking cessation efforts in general and in recent efforts to address tobacco use among Oregonians with asthma.

Adult↗

PubMedDate not supplied

Against the odds: breastfeeding experiences of low income mothers.

This qualitative study asked low income mothers about their experiences of breastfeeding care in the health system and about integrating breastfeeding into their daily lives. Focus group interviews were conducted with urban and rural nursing mothers who participated in the WIC Program and were supported by breastfeeding peer counselors. Mothers said that helpful breastfeeding care providers knew correct information, established supportive personal relationships, referred women to breastfeeding specialists for problems, showed enthusiasm for nursing, and facilitated breastfeeding through concrete actions during the prenatal, intrapartum, and postpartum periods. Unhelpful providers missed opportunities to discuss breastfeeding, gave misinformation, encouraged formula supplementation, provided perfunctory or routine breastfeeding care, and were hard to contact when problems arose. Women valued their breastfeeding peer counselors for responding promptly to distress calls, making home visits, being knowledgeable about breastfeeding, providing hands-on assistance, and acting personal and caring. Incorporating breastfeeding into daily activities was a challenge for many mothers. Ambivalence about the physical bond of nursing, personal modesty, and getting on with life at home, work, or school were identified as important issues. Listening to the thoughts and experiences of low income nursing mothers can help health workers to provide more culturally sensitive, effective breastfeeding care to this population.

Adolescent↗

PubMedDate not supplied

Community-based research to explore safer sex behaviors among women: implications for CNS practice.

PURPOSE/OBJECTIVES: This article illustrates how data from community-based surveys can be used to inform clinical nurse specialist (CNS) practice and ultimately influence patient care related to sex behaviors. BACKGROUND/RATIONALE: Clinical nurse specialists design, implement, and evaluate research to develop specific prevention and intervention strategies for populations. Much of this research is conducted in the tertiary setting although many of the interventions are carried out in the community setting. DESCRIPTION OF THE PROJECT: A sample of rural women (N = 578) participated in a community-based survey to determine characteristics which influence safer sex behaviors. OUTCOME: Results of the survey suggest that age, education, and relationship status influence safer sex behaviors. Women in the community tended to believe that safer sex behaviors were linked to pregnancy prevention and lacked understanding about the importance of safer sex behaviors to prevent sexually transmitted diseases including HIV/AIDS. INTERPRETATION/CONCLUSION: The findings of this study can inform CNSs about sex behaviors among women in a selected community, translating community-based research into evidence-based, patient-centered care. IMPLICATIONS FOR NURSING PRACTICE: Results from community-based research can be used to develop educational and prevention programs, and interventions for specialty populations.

Adolescent↗

PubMed2001

[Control of human African trypanosomiasis: back to square one].

The natural history of sleeping sickness is cyclic. The first epidemic outbreak in the 19th century devastated the population and resolved spontaneously for lack of victims. Intensive development during the colonial period and the movement of population that it spawned led to another epidemic in the early 1920s that reached such severe proportions that drastic steps had to be taken. At that time, Jamot was given complete political, administrative, and financial freedom to combat the disease. This program led to the development of the mobile team concept and so-called vertically structured vector control strategy and was so successful that sleeping sickness ceased to be considered as a major public health problem at the beginning of the 1960s. In the ensuing years sleeping sickness was largely neglected. Monitoring the disease required specialized teams that were no longer considered as cost-effective. One by one the measures that had been implemented to control the disease disappeared, thus setting the scene for a new outbreak grew. In 1995, the incidence of sleeping sickness reached the same levels as in the 1920s. The current situation is a classic example of a neglected disease with a paucity of competent specialists, diagnostic tests, effective drugs, and operational facilities. It was not until 2001 that new hope appeared thanks to a combined public- and private-sector initiative allowing restructuring of treatment teams, renovation of facilities, free distribution of drugs, and research to develop new therapeutic agents. Also thanks to the PATTEC initiative, the governments of the African affected nations are showing new in interest in sleeping sickness. However the battle is far from won and much effort will be required. Time is running out and the stakes are high.

Africa↗

PubMed2003

Views of practicing dentists regarding a mandatory fifth year of training.

As part of a U.S. Health Resources and Services Administration-funded evaluation of the impact of federal funding on postgraduate general dentistry programs, a random sample of 6,725 dentists graduating in 1989, 1993, and 1997 were surveyed regarding practice patterns, advanced training, populations served, services provided, and their position on a mandatory fifth year of training. Responses (1,965) showed 48 percent supporting a mandatory year and 52 percent not supportive. Open-ended comments were provided by 1,626 respondents. The main reasons for supporting a mandatory fifth year were the need for more instructional time and need for a transition year. Individual choice, no value in a fifth year of dental school, mentoring available elsewhere, and cost were cited in opposition. The following respondents were significantly more likely than other respondents to support a mandatory fifth year: individuals who had completed an AEGD, GPR, or specialty program; were Asian; held salaried positions in a community clinic, nursing home, or hospital; or described themselves as a consultant. Graduates in 1993 and 1997 were less supportive of a mandatory fifth year than were 1989 graduates. Significant differences in the reasons offered in support of respondents' positions on the issue were observed among AEGD, GPR, specialists, and nonspecialists and the three cohort years.

Attitude of Health Personnel↗

PubMed1989

The United Kingdom national breast screening programme: implications for pathology departments.

Following an assessment of available data it was recommended that a national breast screening programme should be established in the United Kingdom. This advice was accepted by the Government and specific funding provided to implement the service by 1990. It was envisaged that basic screening units would be established to serve a population of 41,500 women aged 50-64 years and that specialist assessment centres would each cover the work from up to three basic screening units. This will require careful organisation and cooperation between different specialties; pathologists must ensure that they are fully consulted. The increased workload will have a significant impact on laboratories and appropriate funding and manpower will be needed. Pathologists will have to provide expertise in the interpretation of diagnostic samples from such techniques as fine needle aspiration cytology and needle localisation biopsies. To ensure the success of the programme a national Quality Assurance scheme is being implemented, and this will include validation of pathology data.

Breast Neoplasms↗

PubMed1997

Implications of managed care for health systems, clinicians, and patients.

The rhetoric and realities of managed care are easily confused. The rapid growth of managed care in the United States has had many implications for patients, doctors, employers, state and federal programmes, the health insurance industry, major medical institutions, medical research, and vulnerable patient populations. It has restricted patients' choice of doctors and limited access to specialists, reduced the professional autonomy and earnings of doctors, shifted power from the non-profit to the for-profit sectors and from hospitals and doctors to private corporations. It has also raised issues about the future structuring and financing of medical education and research and about practice ethics. However, managed care has also accorded greater prominence to the assessment of patient satisfaction, profiling and monitoring of doctors' work, the use of clinical guidelines and quality assurance procedures and indicated the potential to improve the integration and outcome of care.

Choice Behavior↗

PubMed1999

[Work and professional position of medical specialists trained at the Hospital Clinic of Barcelona].

BACKGROUND: To analyze the working and professional position of medical specialists trained at the Hospital Clínic of Barcelona (Spain) during the last years, and to inquiry about their opinion on both the quality of the training that they received and the ways to improve it. POPULATION AND METHODS: Self-administered questionnaire of closed questions send to 402 specialists that finished their residency at our hospital from 1988 to 1996. RESULTS: 128 completed questionnaires were received and analyzed. The median age in this sample was 34 years (range, 29,41, and 58% were males. 94% of those polled are engaged in medical practice as specialists, 76% have a full-time job. 55% of the specialists complement this main job with others, mainly in private practice. The 40% have been sometimes unemployed, and, for half the specialists, more than one year elapsed from the end of residency to the first full-time job. 97% of those polled ranked the quality of the residency training as good, but most of them emphasized the need for more general knowledge and skills, in addition to the specialized training. CONCLUSION: Most medical specialists trained during the last several years have attained what seems to be an stable working and professional position. The scope of the specialists' training programs by must be broaden including more general knowledge and skills.

Adult↗

PubMed1980

A perspective on forage production in Canada.

Over the past decade, the cattle industry has experienced practically a full circle. With the promising beef prices in the early 1970s, with the glut of grain and a generous assist from government incentive programs, the forage acreage and cattle population have increased at a record rate. By 1974, the tide began to turn - grain prices went up sharply and beef prices became sluggish - and by 1976 a major crisis faced the producers. The cattle industry which had been developing on a cheap grain economy was now obliged to rely more on forage for its survival. Unfortunately, the forage was not existent and the only salvation of the industry was the gift of Providence - weather patterns that provided ample moisture conditions and above normal forage crops, the utilization of cereals and the intervention of government cow-calf support programs. Over the past year, the cycle was completed and record beef prices again prevail. The barley bins are full again and the cattlemen are gearing up for a few fat years. Demands for forage seed are brisk and the seeding down of forage acreage is bound to increase substantially over the next few years. And with this increase, cattle population expansion is bound to follow: how much expansion can the economy support? The production cost factors will determine the extent, but one can almost be certain that any expansion will either be modest or of short duration. At least, it should be. If the cattle industry is to establish solid foundations, it cannot be dependent upon the instability of a grain surplus-shortage position. With the present resources and the potential for developing it in direct competition with other crops, one can only expect a small and steady expansion over a long time span. One must agree with the range researchers and specialists of the Canada Research Stations at Lethbridge and Swift Current that pasture and range will continue to be the limiting factors of cattle expansion as they have been for the past 50 years. It is interesting to note that in the Prairie Provinces at least, the number of livestock raised each year has not changed since 1930 although cattle have largely replaced the horses. It is easy to speculate on paper that Canada can double in the next 20 years its forage and cattle production on its large expanses of land on the fringes of the agriculturally settled areas. It is true that these lands, while marginal for cash crops, could produce excellent forage. But at what cost? And what kind of pasture could we grow on them?It is easy to speculate that our livestock geneticists can breed a ruminant-type animal that will feed on poplar saplings and poplar leaves, or develop a new breed of cattle with buffalo vigor that will thrive in the extreme north. But looking at the musk-ox experience in the Northwest Territories and the history of the Wood Buffalo National Park leaves little room for optimism. The present generation is not likely to see in its lifetime the cattle population go beyond the 20 million mark. We can look, however, with good assurance on the present cattle numbers remaining stable and can look forward to gradual increase brought about by normal improvement in both forage and cattle management.Hopefully, both the cattle producer and the veterinarian will be able to reap the benefits of this most important segment of Canada's agricultural industry.

Animal Feed↗