|
|
علوم دامی ایران، جلد ۴۰، شماره ۳، صفحات ۰-۰
|
|
|
| عنوان فارسی |
تاثیر تغذیه متیونین محافظت شده بر تولید و ترکیبات شیر گاوهای شیرده هلشتاین در اوایل دوره شیردهی |
|
| چکیده فارسی مقاله |
Fifty six Holstein lactating cows (71 days in milk; 35 Kg/day milk production) were employed in a complete block randomized design of repeated measurements. Cows were randomly allocated to two treatments based on their parity. Cows in group 1 were fed a balanced total mixed ration (600 g concentrate /kg DM and 400 g forages /kg DM) with 50 g Rumen Protected Methionine (RPM) per head per day (Methioplus 55%), while cows in group 2 were fed TMR without additive (control group). The experimental period was 40 days with 10 initial days for adaptation. RPM had no effect on milk production, milk composition and dry matter intake. Milk composition namely fat, protein, lactose, solid non fat and total solid percentage did not change by treatment (P>0.05). Cows treated with RPM bore a higher concentration of plasma glucose, and a lower plasma concentration of nonesterified fatty acids (NEFA; P< 0.05). Cows in the two groups did not differ in body condition score changes during the experimental periods. It was concluded that RPM increased plasma glucose, decreased NEFA concentration, and can lead to a decrease in the incidence of ketosis and fatty liver in early lactation cows via improving liver function in fat metabolism and gluconeogenesis. |
|
| کلیدواژه‌های فارسی مقاله |
|
|
| عنوان انگلیسی |
Effects of Feeding Rumen-Protected Methionine on Production Performance and Blood Metabolites of Early Lactating Holstein Cows |
|
| چکیده انگلیسی مقاله |
Fifty six Holstein lactating cows (71 days in milk; 35 Kg/day milk production) were employed in a complete block randomized design of repeated measurements. Cows were randomly allocated to two treatments based on their parity. Cows in group 1 were fed a balanced total mixed ration (600 g concentrate /kg DM and 400 g forages /kg DM) with 50 g Rumen Protected Methionine (RPM) per head per day (Methioplus 55%), while cows in group 2 were fed TMR without additive (control group). The experimental period was 40 days with 10 initial days for adaptation. RPM had no effect on milk production, milk composition and dry matter intake. Milk composition namely fat, protein, lactose, solid non fat and total solid percentage did not change by treatment (P>0.05). Cows treated with RPM bore a higher concentration of plasma glucose, and a lower plasma concentration of nonesterified fatty acids (NEFA; P< 0.05). Cows in the two groups did not differ in body condition score changes during the experimental periods. It was concluded that RPM increased plasma glucose, decreased NEFA concentration, and can lead to a decrease in the incidence of ketosis and fatty liver in early lactation cows via improving liver function in fat metabolism and gluconeogenesis. |
|
| کلیدواژه‌های انگلیسی مقاله |
|
|
| نویسندگان مقاله |
مهدی دهقان بنادکی | dehghan banadaki
حشمت اله بهرامی یکدانگی | bahrami yekdanegi
|
|
| نشانی اینترنتی |
http://ijas.ut.ac.ir/article_20811_dc1bb4907103815eb7bfc7853c160e1b.pdf |
| فایل مقاله |
اشکال در دسترسی به فایل - ./files/site1/rds_journals/954/article-954-194915.pdf |
| کد مقاله (doi) |
|
| زبان مقاله منتشر شده |
fa |
| موضوعات مقاله منتشر شده |
|
| نوع مقاله منتشر شده |
|
|
|
|
برگشت به:
صفحه اول پایگاه |
نسخه مرتبط |
نشریه مرتبط |
فهرست نشریات
|