Follow
International Journal of Current Microbiology and Applied Sciences (IJCMAS)
IJCMAS is now DOI (CrossRef) registered Research Journal. The DOIs are assigned to all published IJCMAS Articles.
Index Copernicus ICI Journals Master List 2018 - IJCMAS--ICV 2018: 95.39 For more details click here
National Academy of Agricultural Sciences (NAAS) : NAAS Score: *5.38 (2020) [Effective from January 1, 2020]For more details click here

Login as a Reviewer

Indexed in



National Academy of Agricultural Sciences (NAAS)
NAAS Score: *5.38 (2019)
[Effective from January 1, 2019]
For more details click here

ICV 2018: 95.39
Index Copernicus ICI Journals Master List 2017 - IJCMAS--ICV 2018: 95.39
For more details click here

See Guidelines to Authors
Current Issues

Original Research Articles

PRINT ISSN : 2319-7692
Online ISSN : 2319-7706
Issues : 12 per year
Publisher : Excellent Publishers
Email : editorijcmas@gmail.com / submit@ijcmas.com
Editor-in-chief: Dr.M.Prakash
Index Copernicus ICV 2018: 95.39
NAAS RATING 2020: 5.38

Int.J.Curr.Microbiol.App.Sci.2020.9(4): 1503-1511
DOI: https://doi.org/10.20546/ijcmas.2020.904.177


Evaluation of Breeding Bulls for Age at First Calving and First Lactation Milk Yield Based on Performance of their Progeny
Prakash*, K. Anilkumar and V. Jamuna
Department of Animal Genetics and Breeding,College of Veterinary and Animal Sciences, Mannuthy-680 651, Kerala Veterinary and Animal Sciences University, Kerala, India
*Corresponding author
Abstract:

The present study was carried out to find the level of performance of crossbred bulls based on AFC and FLMY of their progenies under the field condition. The data of progenies of 128 crossbred bulls from three different sources BAIF, Pune, GADVASU, Ludhiana and PDC, Meerut formed the experimental units over the period of last 10 year (2006 to 2016). The bulls were placed in three groups based on their exotic inheritance and grouped into seven batches based on period at their use. Analysis of data of 743 progeny of age at first calving and 617 progenies for first lactation milk yield using General Linear Model of SPSS version 21 software was done. There is no significant effect of exotic inheritance of bulls on traits under study. Significant difference between progenies of bulls for AFC and FLMY was noticed. The annual genetic gain during the study is reduction of 9.85 days in AFC and increasing of 81.54 kg in FLMY. It indicates progressive genetic improvement for AFC and FLMY through field progeny testing in crossbred cattle of Kerala.


Keywords: Field progeny testing, Age at first calving, First lactation milk yield
Download this article as Download

How to cite this article:

Prakash, G., K. Anilkumar and Jamuna, V. 2020. Evaluation of Breeding Bulls for Age at First Calving and First Lactation Milk Yield Based on Performance of their Progeny.Int.J.Curr.Microbiol.App.Sci. 9(4): 1503-1511. doi: https://doi.org/10.20546/ijcmas.2020.904.177