The economic lifetime of the cows in the big trap articles
The economic lifetime of the cow:
Make sure that the cows until after the second benefit of the belly, because the positive economic impact on the return on investment for livestock. تعمقی that there is behind this, is that the cost of education and the education costs and the cost of …
Make sure that the cows until after the second benefit of the belly, because the positive economic impact on the return on investment for livestock. تعمقی that there is behind this, is that the cost of education and the education costs and fixed costs and variable after the third and carried more belly. Economic lifetime as the ability of a cow in 48 months or so delay غیراختیاری stay in the herd-definition, so the economic lifetime of the lactation number cows that have completed an minimizes or expected to finish up before deleting, it is said.
The economic benefits remain a profitable cattle for a long time to completely clear on the ratio of price to the price of food produced during the life of the milk cow. Increase the life span of a positive economic impact to the economy, while reducing the proportion of food prices to the price of milk. Cow milk production if economically at an accepted level and the price of meat is also cheap, cattle should not be removed.
Increase the longevity of the economic gaudar that allows optional removal on reproductive function due to less concentration and number of required replacement heifers each year.
The economic impact of genetics on longevity
Fitness, part of the important decisions taken about the choice in the herd milk. To increase the longevity of the economic efficiency should be the main goal of genetic selection. The economic importance of a trait, in the second level of heritability and the communication it is this trait with the other in terms of adjectives in the genetic program of several writers. how the impact of the various adjectives on the cow herd survival have attention.
Characteristics of the important economic effects of poison has meaning can directly increase the cost of the treatment Sam and indirectly reduce یاعث production of milk, reduce fertility, remove as early as possible and reduce the lifespan of animals in the herd. Further increase the angle of the poison and poison length being shorter with increasing survival rates and open days in the herd.
The depth of the breast and head posture pacifier with economic lifetime. Apart from production, the height of the rear connection of the breast, the breast, the establishment of the front-end connection head height and bone quality, baby, stay healthy cows in the herd will have the most impact. گاوهایی with less chance of mammary, connections are removed. In the meantime the head گاوهایی pacifier front they are central, (e) the ones that are internal and external head papillae, the chances of survival are greater.
The economic lifetime of the inheritance possible or not?
Based on (2000) – USDA estimate transfer AIPL adjectives (PTA) for economic long 09, 0. If the estimate for the size of the body move adjectives 4, 0; results for the survival of a cow in the herd, genetic management of the above.
Environmental aspects affecting economic life span
Although the goal of sustaining long-term production of cow's milk but detects and removes the interest, a relentless cattle is necessary. The main reason for the removal of the cows in the herd of 13 Western Dakota in the form of (1) has been shown.
Although the cause of death to cows, producing low (disconnected by management) and sell to dairies that ranchers purposes any control over it, but this process will lose almost 35% of the total removal remove cows make up. From the perspective of management, probably still delete because 65 percent of medical intervention to cause. If the management factors with high impact on the hands and feet, the Nazis and the mastitis identified and measured properly, will improve the economic lifetime.
The operating management and possible solutions
The position of the
Cow comfort in increasing the economic life span, the most importance. Weak keep the stall design and makes the necessary size of the cow the rest (lying to 12 hours per day).
راهروهایی that is very rough, slippery or wet due to sanitary drainage water the cows are prone to laminitis. Inflammation of the hoof with لامینایتیس syndrome, white line and detachment and heel the wounds.
The disease is the most costly disease, poison the cattle industry is milky. This disease can be directly (treatment) or indirectly (the costs arising from the reduction in reproductive performance, reduce production or early removal of cows) would increase the cost of livestock. The work done at the University of Michigan shows that if the cows are cows لنگشی group arrived, eight times more likely to remove.
The most important factor in health and a productive life of a cow, the perfect food. Must be نظارتیدقیق on the feed program reviews from birth to end of life for beef production. Most diseases are directly or indirectly connected with inadequate feeding of nutrients on the trap cheeks. Hard creation, متریت breast and trap pairs hold, directly or indirectly are associated with the quality of food. Nutritional disorders such as: هیپوکلسیمی, fatty liver, کتوز, شیردان, somewhere here and limping acidosis may be the result of inadequate nutrient rations. Being an inadequate amount of effective fiber in the ration can be the result of low forage to concentrate ratio, different amounts of fermented grain or particle size.
Although all of these nutrients to the supposedly identify and supply but how to combine them, the transfer of nutrients and food selection by cattle can cause problems away from waiting in the health of the cow.
Some control methods control the amount of rations, including livestock, Champ of dry matter intake and control changes the consistency of the Kodo undigested materials in it. If gaodaran wait to see the milk composition changes, it is possible to prevent these problems, it's too late.
Water and air
Always remember that the temperature changes at the end of seasons affect on food needs. تعدیلات ration and management should be coordinated with these changes. If gaodaran in this brief work, health, current production of milk and animal reproduction may be affected and would eventually be removed from the herd of cows early.
General principles of management and دوشیدن
Mastitis, probably one of the most important cause of reducing the production of milk and remove the cows. Generally the production of milk cows with clinical mastitis in the abdomen first, 277 kg and cows in the belly of a second and more, 454 kg reduced. The annual rate of mastitis can be caused by more than 35 percent of the herd. Simple management operations such as: at the end of دوشیدن cows have mastitis, can have an impact on the economic lifetime of the cows. With instructions from the National Assembly of mastitis (NMC), can be used to increase the economic lifetime of the cow, including:
-گاوهایی that more than 20 percent less than the average of their production of the herd.
-Abdominal کهبیش of the first 30 percent of cows less than average herd production are to delete.
-گاوهایی with clinical mastitis and chronic.
Low cattle-calves sell production.
Although some of these guidelines may be at the start of the economic decline is indicative of a lifetime, but if it is true, the accuracy of the shots. According to the National Assembly, the most practical way of mastitis, eliminate the acute infection, remove the cows. Keep گاوهایی that permanently holds large numbers of body cells, has little justification, because the anhabeh as a source of infection and the risk of getting to act with غیرعفونی cattle herd is also increasing. Source: itp