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بررسی تأثیر بتائین برکمیت و کیفیت آغوز و غلظت فراسنجه‌های‌خونی در میش‌های آبستن سنجابی | ||
| علوم دامی | ||
| مقاله 18، دوره 31، شماره 121، اسفند 1397، صفحه 231-240 اصل مقاله (2.34 M) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22092/asj.2018.120345.1621 | ||
| نویسندگان | ||
| حمیدرضا صحرائی1؛ علی کیانی* 2؛ آرش آذرفر3؛ حسن خمیس آبادی4 | ||
| 1دانشجوی دکتری علوم دامی، دانشگاه لرستان | ||
| 2دانشیار گروه علوم دامی-دانشگاه لرستان | ||
| 3دانشیار گروه علوم دامی ، دانشگاه لرستان | ||
| 4استاد یار بخش تحقیقات علوم دامی، مرکز تحقیقات و آموزش کشاورزی و منابع طبیعی کرمانشاه، سازمان تحقیقات و آموزش کشاورزی، تهران، ایران | ||
| چکیده | ||
| بتائین یک ترکیب دهنده گروه متیل است که در برخی از فرایندهای فیزیولوژیکی از جمله شیردهی موثر باشد. در پژوهش حاضر، تأثیر افزودن بتائین به جیره بر غلظت برخی فراسنجه‌های‌خونی،کمیت وکیفیت آغوز میش‌های سنجابی بررسی شد. تعداد 20 رأس میش چند شکم زایش در ماه آخرآبستنی در دوگروه با جیره پایه (شاهد:6/3±2/71 کیلوگرم وزن بدن) و یا با جیره پایه بعلاوه پنج گرم بتائین در کیلوگرم ماده‌‌‌خشک (بتائین:8/3±6/71 کیلوگرم) تغذیه شد. مصرف خوراک، شاخص وضعیت بدن، و حجم پستان میش‌ها و همچنین غلظت خونی گلوکز، بتاهیدروکسی بوتیرات، آلبومین، پروتئین‌کل، اوره و هموسیستئین سرم در ماه اخر آبستنی تعیین شد. مقدارآغوز تولیدی تا شش ساعت بعد از زایش در دو نوبت با تزریق عضلانی اکسی توسین اندازه‌گیری شد و ترکیبات شیمیایی آن تعیین شد. مکمل بتائین تأثیری بر مقدار مصرف خوراک، شاخص وضعیت بدن، و حجم پستان میش‌ها نداشت. میانگین مقدار آغوز تولیدی(593 در مقابل 365 گرم) و چربی آغوز (93 در مقابل 59 گرم) و غلظت خونی هموسیستئین (4/8 در مقابل 1/8 میکرومول در لیتر) در میش‌هایی که بتائین دریافت کردند بیشتر(05/0P<) از میش‌های شاهد بود. در میش‌های بتائین یک روند کاهشی در غلظت گلوکز (098/0=P،2/3 در مقابل 4/3 میلی‌مول در لیتر) وغلظت بتا-هیدروکسی‌بوتیرات (059/0=P، 46/0در مقابل 82/0 میلی‌مول در لیتر) در مقایسه با میش‌های شاهد مشاهده شد. نتیجه کلی اینکه مصرف 5 گرم بتائین با ازای هر کیلوگرم ماده خشک ضمن تاثیر مثبت بر تولید و درصد چربی آغوز، باعث افزایش غلظت هموسیستئین، و کاهش اجسام‌کتونی احتمالا با کاهش تجزیه چربی در میش‌های آبستن سنجابی شد. | ||
| کلیدواژه‌ها | ||
| بتائین؛ آغوز؛ فراسنجه خونی؛ هموسیستئین؛ میش | ||
| عنوان مقاله [English] | ||
| Effect of betaine supplementation on quantity and quality of colostrum and on circulating blood metabolites in Sanjabi pregnant ewes | ||
| نویسندگان [English] | ||
| Hamid reza Sahraei1؛ Ali Kiani2؛ Arash Azarfar3؛ Hassan Khamisabadi4 | ||
| 1Dep. of Animal Science, Faculty of Agricultural and Nature Resources, University of Lorestan, Khorram Ababd, Iran | ||
| 2Dep. of Animal Science, Faculty of Agricultural and Nature Resources, University of Lorestan, Khorram Ababd, Iran | ||
| 3Dep. of Animal Science, Faculty of Agricultural and Nature Resources, University of Lorestan, Khorram Ababd, Iran | ||
| 4Assistant Professor, Animal Science Department, Kermanshah Agricultural and Natural Resources Research and Education Center, Agricultural Research, Education and Extension Organization (AREEO), Iran. | ||
| چکیده [English] | ||
| Betaine is a methyl group donor that can affect important physiological processes involed with hemocyctein such as lactation. In the present study, the effect of betaine supplementation on concentrations of some blood metabolites, and on quantity of colostrum in pregnant ewes was investigated. Twenty multiparous pregnant Sanjabi ewes were fed either a basal diet (Control: 71.2±3.6 kg BW) or the basal diet supplemented with 5 g per kg dry matter betaine (Betaine: 71.6±3.8 kg BW) during the last month of gestation. Feed intake, body condition score, udder volume, and circulating concentration of glucose, beta-hydroxybutyrate, albumin, total protein, urea and homocysteine were determined during the last month prepartum. The quantity of colostrum was measured in two times with oxytocin ingection until six hours post- partum, and then was analysed for its chemical composions. The dry matter intake, body condition score, and udder volume of ewes in both Control and Betaine were similar. Quantity of colostrum (593 vs. 365 g) and fat (93 vs. 59 g), and blood concentration of hemocystein (8.4 vs. 8.1 µmol/L) in ewes receiving betaine was greater (P <0.05) than those in Control. Ewes in Betaine had a tendency towards lower circulating concentration of glucose (3.2 vs. 3.4 mmol/L, P=0.098), and beta-hydroxybutyrate concentration (0.46 vs. 0.82 mmol/L, P=0.059) than control ewes. In conclusion, dietary supplementation of betaine increased quantilty and fat content of colostrum, increased circulating hemocystein, and reduced circulating ketone bodies most likely via suppresing fatty acid oxidation in Sanjabi pregnant ewes. | ||
| کلیدواژه‌ها [English] | ||
| betaine, Blood metabolites, colostrum, homocysteine, Sheep | ||
| مراجع | ||
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