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العنوان
Genetic evaluation of some economic traits in Egyptian buffaloes =
المؤلف
Elbanhawy, Kholood Ahmed Khaled
هيئة الاعداد
باحث / Kholood Ahmed Khaled Elbanhawy
مشرف / Adel Saied Ahmed Elbarbary
مشرف / Mohamed Hassan Hammoud
مشرف / Mohamed Mahmoud Salem
مشرف / Dalia Kassem
الموضوع
Animal products.
تاريخ النشر
2019.
عدد الصفحات
69 p. :
اللغة
الإنجليزية
الدرجة
ماجستير
التخصص
العلوم الزراعية والبيولوجية
الناشر
تاريخ الإجازة
10/12/2019
مكان الإجازة
اتحاد مكتبات الجامعات المصرية - Animal and Fish Production
الفهرس
Only 14 pages are availabe for public view

from 86

from 86

Abstract

It is concluded that herd and year of calving were important factors affecting the studied traits, while season of calving was not important factor in terms of their effects on the studied traits.
Heritability estimates ranged between low values for total number of parities to high value observed for total lifetime milk production.
Genetic correlations ranged between negative and low value (between calving interval and total number of parties) and high and positive value (between total lifetime milk yield and total lifetime lactation period).
Phenotypic correlation were all positive, ranging between low (between total number of parities and adjusted milk yield) to high (between total lifetime milk yield and total lifetime lactation period) values.
The genetic trends of animals and dam breeding value were insignificant for all studied traits indicating that the programs of selection was not applied for these population. In current study, the animal genetic trend was positive for all traits except AFC.