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تمام زمانها بر حسب GMT + 4 Hours ميباشند
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6 مهر 1385 - 12:09 |
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 نويسنده |
پيام |
دكتر محمد لطفي زاده
كاربر بسيار فعال
عضو شده در: 6 مهر 1385
پست: 202
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| عنوان: اگه گفتيد چرا ...........؟ |
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با سلام و احترام
مي دانيد كه يكي از نامهاي مشهور بيماري Hypocalcemia تب شير است.
به نظر شما درجه حرارت حيوان مبتلا با توجه به نام (تب شير) چند درجه است؟
فكر مي كنيد چرا نام اين بيماري را تــــــــب شــــــــيــــــــر گذاشته اند؟!!!!! |
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8 مهر 1385 - 13:20 |
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| نويسنده |
پيام |
nima
كاربر بسيار فعال
عضو شده در: 4 خرداد 1384
پست: 798
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| عنوان: |
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يك مقاله جمع و جور توي هارد كامپيوترم بود ولي با عرض معذرت فرصت ترجمشو و تايپ مجدد به فارسي اون را ندارم عينا ميگذارم اينجا
| نقل قول: |
Milk Fever occurs in cows around calving. The disease is caused by a low blood calcium level (hypocalcaemia), generally as a result of calving and milk production.
During the final months of pregnancy there is a considerable drain on a cow's blood calcium to supply the developing calf and as a constituent of colostrum and milk. The majority of milk fever cases occur from just before calving to within 10 days after calving although they can occur up to 3 months after calving particularly if a cow is stressed. Milk fever, however, is most commonly seen within 72 hours of calving. All cows are slightly hypocalcaemic at calving but in some cows the lack of calcium becomes so great that clinical signs of milk fever develop.
Generally the disease will show up in cows which are high producers on their third or subsequent calf, and grazing lush pasture. Cows grazing pasture grown on high soil levels of potassium are also susceptible.
The breed of the cow can also influence the chances of a cow developing milk fever. Jerseys are more susceptible to it than Friesians and some families, within various breeds, are more susceptible than others. Inducing an aged cow to calve can increase the risk.
Clinical Signs
The name 'milk fever' is a misnomer because symptoms of the disease do not include a fever at all. In fact, affected cows have a sub-normal or normal body temperature rather than an elevated one.
The clinical signs can be classified into three stages.
In the first stage there is a short period where the cow will act excitedly with stiffening of the muscles and trembling. The cow is usually reluctant to move or eat and later, the hind legs become stiff and the cow staggers. These signs only last for a brief time and often go unnoticed.
Secondly, the cow lies down and cannot get up - this stage is called sternal recumbency. She can sit up and often has a ‘kink’ in her neck, or has her head folded along her flank. She is dull and cold to touch, her body temperature is often lower than normal and her eyes are dry and staring. Breathing becomes heavier and the heartbeat gets faster.
Finally, the cow lies on its side with her legs stretched out (lateral recumbency) and is almost unconscious. Bloat often develops and regurgitation of the rumen contents is likely. If left untreated at this stage most animals die.
Treatment
Treatment for all milk fever cases should be regarded as urgent.
The first thing to do is, ensure that the cow is sitting up to lessen the danger of choking. Prop her up with a bale of hay or a fence post if required.
The standard treatment is to inject a solution of calcium borogluconate under the skin behind the shoulder. Often, other mineral deficiencies such as magnesium and phosphorus contribute to the problem and it is safer to inject a combined mineral solution to cover this possibility. Generally, two packs or bottles are used and the solution should first be warmed to blood temperature (37oC) before injection under the skin.
After the injection, the area should be firmly rubbed to spread the fluid and allow rapid absorption into the blood stream. Cows that are staggering or in sternal recumbency when first treated, should then recover within one or two hours. If the two injections under the skin do not bring the animal to her feet in two hours, or if she is ‘flat out; (lateral recumbency) when first found, it is best to call a veterinarian. Expert veterinary treatment, involving intravenous injections, often gets affected animals back on their feet quickly. Only a veterinarian should carry out intravenous injections as these can cause sudden death if incorrectly performed.
The longer a cow is ‘down’ the greater the chance she will stay that way.
Calves should be removed from affected cows and after treatment cows should be only partially milked out for the next 48 hours to reduce the calcium drain and prevent relapses.
Prevention
Cows should be kept on a low calcium diet while they are dry (not lactating).
This stimulates their calcium regulatory system to keep the blood levels normal by mobilising the body stores of calcium from the bone. When the demand for calcium increases at calving, calcium can then be mobilised much more rapidly from bone than from the feed therefore preventing milk fever.
Research has shown that cows with low blood magnesium levels have a greater chance of getting milk fever. There is evidence to suggest that a magnesium supplement such as magnesium oxide will also help prevent milk fever. This treatment is most effective during grass tetany danger periods, which in Tasmania extends from May to October. Magnesium oxide should be fed at the rate of 50g per cow per day, from at least 10 days prior to calving. Then feed a calcium supplement after calving to prevent further problems at 50g calcium/cow/day. Magnesium oxide can be administered in many forms as a powder dusted onto the paddock or feed source just prior to grazing, as an oral drench or through the water system (if using this option, ensure that cows have no other water sources such as creeks, puddles etc).
It is also possible to inject suspected cows under the skin with calcium borogluconate at, or just after, calving.
Another preventative treatment has been developed using anionic salts. This appears to work well when it is possible to formulate the total ration that the cow eats, eg housed cows. A metabolic acidosis is created in the animal by feeding the anionic salts. This aids the absorption of calcium from bone to meet requirements after calving. In pasture based systems this is not easily achieved because of the variation of anion and cation levels in different pastures. The effect of anionic salts, which are generally unpalatable, in this situation is questionable but in some cases may be effective.
There are several other options that are available that may be more appropriate. If interested in other treatments available, contact your veterinarian for advice as to what the options are and how to best administer them.
Ian Hubble
Principal Dairy Officer, Elliott Research & Demonstration Station
Agdex 410/652
Number 187
ISSN 0159-2971
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8 مهر 1385 - 15:40 |
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| نويسنده |
پيام |
دكتر محمد لطفي زاده
كاربر بسيار فعال
عضو شده در: 6 مهر 1385
پست: 202
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| عنوان: good job!!!!!!!!and thanx |
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با سلام و احترام
از مطلب جمع و جور خوبت ممنون.
همانطور كه در اين مطلب هم اومده مي بينيد كه جواب سوال معلومه :
حيوان اتفاقا در بيماري تب شير درجه حرارت طبيعي و يا حتي كمتر از نرمال را دارد و اطلاق عبارت تب شير به اين بيماري و كلمه تب اشاره به بيماري است و نه تب به معناي افزايش مرضي درجه حرارت بدن.
از مطلبت ممنون
نيما جان اگه دوست داشتي خودت را بيشتر معرفي كن. رشته و كارت درحال حاضر
ضمنا اگر فكر مي كنيد كه اينگونه سوالات و جوابها به بازديد كنندگان سايت از نظر علمي كمك مي كنه مي تونيم اينگونه سوال و جوابها را ادامه بديم.
فكر مي كنم مدير محترم سايت بايد يك تبليغ درست و حسابي براي اين سايت در بين بخصوص دانشجويان دامپزشكي بكنه تا اين سايت بيشتر جون بگيره و محلي براي تبادل مسايل علمي و عملي بين دانشجويان دامپزشكي و همكاران عزيزمان بشه. |
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8 مهر 1385 - 17:57 |
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| نويسنده |
پيام |
nima
كاربر بسيار فعال
عضو شده در: 4 خرداد 1384
پست: 798
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| عنوان: |
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من دانشجوي دكترا دامپزشكي هستم
طرح موضوع به صورت پرسش و پاسخ آن هم هر از گاهي ايده خوبيه بلكه دوستان ياد بگيرند يا اين طور بگم تشويق بشن توي بحث ها وارد شوند. زماني اين شيوه طرح موضوع خوب جواب ميده كه چند نفر پايه بحث باشند و خلاصه تاپيك گرم ميشه و نتيجه اون را هم كل اعضا ميگيرند.بهر حال گاهي سر نخ دادن ميتونه جرقه اي توي ذهن فرد ايجاد كنه كه مطلب بهتر در ذهن بشينه.
ضمنا همين جا بايد بگم كه جناب دكتر اردلان مظاهري براي اين انجمن خيلي زحمت ميكشند . ايشون از وقت استراحت خودشون صرف پايدار نگه داشتن سايت ميگذارن تا ماها بتونيم دور هم جمع بشيم و دانشمونو كامل كنيم در حالي كه ايشون ميتونستند زمانشون را صرف مسائل شخصي بكنند كه اين جاي تقدير داره |
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8 مهر 1385 - 18:19 |
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| نويسنده |
پيام |
دكتر محمد لطفي زاده
كاربر بسيار فعال
عضو شده در: 6 مهر 1385
پست: 202
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| عنوان: ممنون از جوابت.... |
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با سلام و احترام
در مورد زحمات دكتر اردلان كاملا موافقم و همت ايشان بايد ارج نهاد.
در مورد نيماي عزيز هم خوشبختم. ولي نمي دونم سال چندمي؟
اگر تبليغ درستي انجام بشه اين سايت بخوبي پا مي گيره !!!!!
البته من به تازگي با اين سايت آشنا شدم ولي فكرهايي دارم كه انشاءالله در آينده نزديك با دوستان خوبي چون شما و همكار عزيز دكتر اردلان در ميان خواهم گذاشت. |
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25 بهمن 1385 - 1:13 |
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| نويسنده |
پيام |
vet79b
كاربر عادي
عضو شده در: 25 بهمن 1385
پست: 3
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| عنوان: Re: اگه گفتيد چرا ...........؟ |
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| دكتر محمد ل. نوشته است: | با سلام و احترام
مي دانيد كه يكي از نامهاي مشهور بيماري Hypocalcemia تب شير است.
به نظر شما درجه حرارت حيوان مبتلا با توجه به نام (تب شير) چند درجه است؟
فكر مي كنيد چرا نام اين بيماري را تــــــــب شــــــــيــــــــر گذاشته اند؟!!!!! |
با سلام از آنجايي كه در مراحلي از بيماري به دليل ترمورهاي عضلاني ، دماي بدني تا حدودي بالاتر از حد نرمال ميرود شايد به اين دليل نام بيماري را تب شير گذاشته اند. |
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1 اسفند 1385 - 12:52 |
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| نويسنده |
پيام |
دكتر محمد لطفي زاده
كاربر بسيار فعال
عضو شده در: 6 مهر 1385
پست: 202
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| عنوان: تب ؟!!!!!!!!!!!!!!!!!!!!!! |
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با سلام و احترام
و با تشكر از وت 79 كه جواب داده بودند.
بايد عرض كنم كه در اين بيماري اصلا تب به معناي افزايش مرضي درجه حرارت بدن وجود ندارد. به پست هاي بالا نگاه كنيد.
تب در اينجا به معناي بيماري بوده است. فقط همين .... باور كنيد !!!!!!!!!!!!! |
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شما نمي توانيد در اين بخش موضوع جديد پست كنيد
شما نمي توانيد در اين بخش به موضوعها پاسخ دهيد
شما نمي توانيد موضوع هاي خودتان را در اين بخش ويرايش كنيد
شما نمي توانيد موضوع هاي خودتان را در اين بخش حذف كنيد
شما نمي توانيد در اين بخش راي دهيد
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