Genetic divergence studies on reproduction and production traits among Gir crosses
Mahendra Gorakh Mote1, Sangita Uddhav Bhoite2, Yogesh Chandrakant Bangar3
1Department of Animal Husbandry and Dairy Science, Mahatma Phule Krishi Vidyapeeth, Rahuri, Maharashtra, 413722, India. mahendramote18@gmail.com.
Abstract:
The study was undertaken to estimate the genetic divergence among FG, IFG, FJG, IFJG, and R crosses of Gir cow on the basis of age at first conception, age at first calving, and lactation milk yield per day of lactation length using Mahalanobis D2 statistics. The genetic groups' influence was significant (P < 0.01) for all traits separately and simultaneously (V test) based on three traits. The differences in the D2 values among all the genetic groups' combinations were significant except IFG with R genetic group combination. The total D2 values for age at first conception (AFCon), age at first calving (AFC), and lactation milk yield per day of lactation length (LMY/LL) were 18.85, 0.06, and 9.01 respectively. The percent contribution of AFCon to the total D2 value was maximum as 67.51 followed by LMY/LL as 32.27 and lowest of AFC as 0.22. Among the clusters formed on the basis of D2 values, IFG, IFJG, and R formed one cluster, whereas, FG and FJG formed second cluster. The magnitude of inter-cluster distance was greater than intra-cluster distance.
Related Concept Videos
Cross Product
The magnitude of the cross product is obtained by multiplying the magnitude of both the vectors and the sine of the angle between them. This means that a larger angle between the vectors will lead to a greater magnitude of the cross product.
Vector Product (Cross Product)
Consider the cross product of two vectors. Imagine rotating the first vector about...
Polygenic Traits
Reproductive Cloning
Somatic Cell Nuclear Transfer
In SCNT, an egg cell is taken from an animal and its nucleus is removed, creating an enucleated egg. Then a somatic...
Multiple Allele Traits
Trait and State Self-Esteem


