منابع مشابه
First Report on Standard G-Banded Karyotype of Nili-Ravi Buffalo, Bubalas bubalis
The present study was planned to determine if chromosomal dysmorphology based on G band nomenclature is common in the Nili-Ravi buffalo which is the prime dairy breed thriving predominantly in the Punjab Province of Pakistan. Microscopic screening of 50 good quality metaphase cells from each of 34 male and female buffalo calves revealed the expected chromosome complement of 24 autosomal pairs a...
متن کاملEffect of age and season on some semen parameters of Nili-Ravi buffalo (Bubalus bubalis) bulls
This study was carried out on 16 buffalo bulls (Bubalus bubalis) divided into four age groups, including three healthy (less than 5, 6-10, and more than 11 year old animals), and one abnormal group (6-10 year old bulls having poor semen quality). The study was undertaken for a one year period divided into five seasons (dry summer, humid summer, autumn, winter and spring). Overall semen volume w...
متن کاملCalving day and age at first calving in Angus heifers.
Because of difficulties in data collection and analysis, in most breeds there have been limited ways to evaluate fertility in females on a between-herd basis. The objective of this study was to determine the heritabilities (direct and maternal) for CD (calving day) and AFC (age at first calving) in American Angus heifers and to evaluate the potential for using these traits in genetic improvemen...
متن کاملSemen Characteristics as Influenced by Seasonal and Climatic Variations in Nili-ravi Buffalo Breeding Bulls
The present study was conducted to determine the effect of seasonal and climatic variations on semen characteristics of Nili-Ravi buffalo breeding bulls in Sahiwal and Bahawalpur districts of Punjab, Pakistan. For this purpose, 14 adult NiliRavi buffalo breeding bulls (n=7 from each of Semen Production Unit (SPU) Qadirabad, Sahiwal and SPU Karaniwala, Bahawalpur), were used. Semen samples were ...
متن کاملΒ(1,4)-galactosyltransferase-i Gene Polymorphisms in Pakistani Nili Ravi Buffalo
β4GalT-I interacts with α-lactalbumin to form the lactose synthase in mammary gland. Considering the biological function of the lactose synthase complex, β4GalT-I gene can be considered as a candidate gene for milk production in dairy animals. The bovine β4GalT-I gene, 3,283 base pairs in length, is mapped on chromosome 8. The present research work was planned to identify the polymorphism in β4...
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ژورنال
عنوان ژورنال: Pakistan Journal of Biological Sciences
سال: 1999
ISSN: 1028-8880,1812-5735
DOI: 10.3923/pjbs.1999.438.441