Review of the relationship between milk urea nitrogen and days in milk, parity, and monthly temperature mean in Iranian Holstein cows
نویسندگان
چکیده
منابع مشابه
Genetic Relationship between Milk Production, Calving Ease and Days Open at First Parity in Holstein Cows
Data containing 14,188 lactation and reproductive records of Korean Holstein cows at first parity distributed across 3,734 herd-year-season groups were analyzed to get genetic (co)variance estimates for milk yield, fat yield, calving ease, and days open. Milk and Fat yields were adjusted to 305 d. Heritabilities and genetic correlations were estimated in two different animal models on which wer...
متن کاملGenetic relationship between milk urea nitrogen and reproductive performance in Holstein dairy cows.
The objective of this study was to describe the genetic and phenotypic relationship between milk urea nitrogen (MUN) and reproductive traits in Iranian Holstein dairy cows. Test-day MUN data obtained from 57 301 dairy cows on 20 large dairy herds in Iran between January 2005 and June 2009. Genetic parameters for MUN and reproductive traits were estimated with a five-trait model using ASREML pro...
متن کاملthe relationship between teaching styles and personality types of efl teachers in iranian schools
معلمان یکی از موثرترین عنصر برای موفقیت در هر سیستم آموزشی می باشند. این تحقیق? رابطه بین شخصیت معلمان و سبک های آموزشی شان را در محیط یادگیری زبان انگلیسی در ایران بررسی می کند. بهمین جهت? با توجه به موارد موجود? تعداد 45 نفر از معلمان زبان از مدارس مختلف تبریز انتخاب شدند. اطلاعات از طریق نوع شخصیت معلم و فهرستی از سبکهای آموزشی شان جمع آوری شد. تجزیه و تحلیل داده ها نشان داد که رابطه معنی دا...
the relationship between learners critical thinking ability and their performance in the reading sections of the tofel and ielts test
the study reflected in this thesis aims at finding out relationships between critical thinking (ct), and the reading sections of tofel and ielts tests. the study tries to find any relationships between the ct ability of students and their performance on reading tests of tofel and academic ielts. however, no research has ever been conducted to investigate the relationship between ct and the read...
15 صفحه اولthe relationship between academic self-concept and academic achievement in english and general subjects of the students of high school
according to research, academic self-concept and academic achievement are mutually interdependent. in the present study, the aim was to determine the relationship between the academic self-concept and the academic achievement of students in english as a foreign language and general subjects. the participants were 320 students studying in 4th grade of high school in three cities of noor, nowshah...
ذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Dairy Science
سال: 2012
ISSN: 0022-0302
DOI: 10.3168/jds.2011-4349