Lesiones de insuficiencia cardiaca derecha y ascitis en pollos de engorde. de las aves afectadas con las de las aves control de la misma edad, albergadas. incidencia de ascitis en pollos de engorde criados en alturas bajas ( metros alimento granulado mientras que no hubo casos de ascitis en las aves que. INCREMENTO DE ASCITIS EN POLLOS DE ENGRDE EN EL CANTÒN URCUQUI – TUMBABIRO. Acumulaciòn de fluido corporal a nivel de.
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Periquito con ascitis.
Skip to main content. Log In Sign Up. Consequently, the question arises as to whether sufficient genetic diversity remains within industry stocks to address future needs.
With the chicken genome sequence and more than 2. To achieve this assessment, informative SNPs were genotyped on individuals, including commercial birds. The proportion of alleles lacking in commercial populations was assessed by 1 estimating the global SNP allele frequency distribution from a hypothetical ancestral population as a reference, then determining the portion of the distribution lost, and then 2 determining the relationship between allele loss and the inbreeding coefficient.
The missing genetic diversity resulted from the limited number of incorporated breeds. As such, hypothetically combining stocks within a company could recover only preexisting within-breed variability, but not more rare ancestral alleles. We establish that SNP weights act as sentinels of biodiversity and provide an objective assessment of the strains that are most valuable for preserving genetic diversity.
This is the first experimental analysis investigating the extant genetic diversity of virtually an entire agricultural commodity.
ASCITIS EN POLLOS DE ENGRDE EN EL CANTÒN URCUQUI – TUMBABIRO by cinthia pelaez on Prezi
The methods presented are the first to characterize biodiversity in terms of allelic diversity and to objectively link rate of allele loss with the inbreeding coefficient.
Medio ambiente, ingredientes alimenticios, y principalmente por un metabolismo y productividad incrementada: In addition, conditions such as osteoporosis and hypocalcaemia in table-egg chickens reduce egg production and can kill. Some strains of laying hen appear to be more susceptible.
Fatty liver syndrome has been seen in conjunction with cage layer fatigue. It contrasts with another cause of bone mineral loss, osteomalacia, in which defective mineralization of bone tissue occurs, with thick seams enn poorly mineralized organic matrix. Both conditions will lead to poor quality bone, but osteomalacia is primarily associated with nutritional deficiencies of calcium, phosphorus, or vitamin D, whereas osteoporosis is an altogether more complex problem.
Osteoporosis, cage layer fatigue and poor shell quality have a common cause, i. Osteoporosis in laying hens is a condition that involves the progressive loss of structural wves during the laying period. Cortes Sagitales de los Extremos Proximales.
These behaviours can escalate to aggressive pecking, particularly if injury occurs. Scientific study has shown that any or a combination of stressors can also serve as triggers leading to serious aggressive pecking and cannibalism.
Prevention and treatment of cannibalism: Where outbreaks of cannibalism have occurred in a flock, or where there is a reasonable concern that management strategies can not be guaranteed to prevent an outbreak, then beak trimming of the birds may be used as a control measure. Trimming of the sharp tip of the upper, and sometimes also lower, beak reduces the damage that is caused by aggressive pecking. Provision of escape areas may also help in floor-housed flocks.
Other control methods that have been tested include the use of spectacles to prevent forward vision, bits that prevent complete closure of the beak and coloured contact lenses to prevent the identification of blood on another bird.
Many nutritional, medicinal and non-infectious cause of loss in the broiler management strategies have been proposed to industry worldwide. Oils rich in n-3 fatty acids have ventilation, the presence of respiratory disease, been shown to reduce pulmonary hypertension and, high sodium and low dietary phosphorus consequently, ascites incidence.
Periquito con ascitis.
The potential use of levels, hepatotoxins, mycotoxins and flax oil has already been demonstrated, whereas the furazolidone in the feed, vitamin E and effects of other oils rich in n-3 fatty acids fish, linseed and canola oils remain to be investigated.
It was reported that low temperature be a promising field of research in broiler nutrition. In was an easy and economical method to trigger general, reducing the dietary level of salt NaCl ascites. One report has indicated that high nutrient and adding bicarbonates to the diet and drinking metabolic rate could cause ascites, however high water have been proposed as potential.
Diuretics have also shown positive effects, presumably because there is a reduction of sodium and fluid retention in the body; litter humidity however must be closely monitored if diuretics are continuously administered. As the high metabolic rate fast growth is a major factor contributing to the susceptibility of broilers to ascites, early- age feed or nutrient restriction qualitative or quantitative or light restriction in order to slow down the growth rate seem practically viable methods, since final body weight is not compromised.
Optimization of the house temperature and ventilation in cold weather seem helpful practices to decrease ascites incidence. Further studies are needed to elucidate the exact underlying physiological mechanism. Calving and the first month after freshening are critical times for the dairy cow.
The major disorders affecting the fresh cow are usually the result of nutrition and feed management problems.
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