Magnitude of correlation between direct and maternal genetic effects for growth traits in ruminants
Journal Title: Scientific Journal of Review - Year 2013, Vol 2, Issue 4
Abstract
This is a review paper that looks at the influence of sign and magnitude of the correlation between direct and maternal genetic effects for growth traits in sheep, goats and cattle. Considerable debate exists about the validity of results on the factors which influence the sign and magnitude of the correlation between direct and genetic effects of growth traits in sheep, goats and cattle. The current reports on sign and magnitude of the correlation between direct and maternal effects for growth traits in sheep, goats and cattle show that both positive and negative values are possible. It emerged that the use of an appropriate covariance of direct and maternal genetic effects for growth traits in sheep, goats and cattle has a bearing on the accuracy of selected programs. The importance of the correlation between direct and maternal effects for growth traits in sheep, goats and cattle is based on the notion that ignoring the covariance of direct and maternal genetic effects for growth traits in sheep, goats and cattle may distort the ranking of individual animals in a population. The review paper, therefore, concludes that the sign and magnitude of covariance of direct and maternal genetic effects for growth traits in sheep, goats and cattle, is dependent on various factors which include management, breed and data preparation process.
Authors and Affiliations
N. Assan| Department of Agriculture, Faculty of Science and Technology, Zimbabwe Open University, Bulawayo Region, Box 3550, Bulawayo, Zimbabwe.
A comparative study of burnout and mental health with respect to demographic characteristics of male and female employee
Stress is part of life, and is generally associated with a constant change in the circumstances one faces. The term "stress" refers to an internal condition caused by a need , exhaustion or lack of consent. A certain lev...
Review of effects extent and consequences of invalidity in mixed non-stock corporation
Businesses, in commercial law and the bill passed in 2011 was considered, and a general classification of capital companies, individuals, cooperatives are classified as mixed, that is, they will make a few companies. Mix...
Livestock waste and its impact on the environment
Livestock industries produce meat, milk and egg, and also generate large volumes of wastes that could be harmful to the environment if not well managed. The demand for animal products is driven by increasing per capital...
Animal models for diseases of respiratory system
Latest trends in understanding of respiratory diseases in human beings can be derived from thorough clinical studies of these diseases occurring in man, but conducting such studies in man is difficult in terms of experim...
Effectiveness of immunization programs against job stress with relaxation among the staff of Mahallat city
This research studies effectiveness of immunization programs against job stress with relaxation among the staffs. This study is pre-posttest quasi experimental with control groups, which conducted on 40 subjects among di...