Published In
Indian Journal of Animal Research
Article Metrics

0
Views
0
Citations
Reviewed By
In this Article
APC
APC cover the cost of turning a manuscript into a published manuscript through peer-review process, editorial work as well as the cost of hosting, distributing, indexing and promoting the manuscript.
Publish With US
Submit your manuscript through user friendly platform and acquire the maximum impact for your research by publishing with ARCC Journals.
Become a Reviewer/Member
Join our esteemed reviewers panel and become an editorial board member with international experts in the domain of numerous specializations.
Open Access
Filling the gap between research and communication ARCC provide Open Access of all journals which empower research community in all the ways which is accessible to all.
Products and Services
We provide prime quality of services to assist you select right product of your requirement.
Support and Policies
Finest policies are designed to ensure world class support to our authors, members and readers. Our efficient team provides best possible support for you.
Follow us
volume 42 issue 1 (march 2008) : 44-48
GENETIC STUDIES ON COMPONENTS OF FIRST LACTATION AND LIFETIME TRAITS IN SAHIWAL CATTLE
1Department of Animal Breeding
CCS Haryana Agricultural University, Hisar-125 004, India
ABSTRACT
Data on 413 Sahiwal cows maintained at Government Livestock Farm, Hisar during 1977-96
were used. Heritability estimates for age at first calving, first lactation milk yield, first lactation length,
first service period, first dry period, first calving interval and first peak yield were 0.49±0.18,
0.13±0.09, 0.47±0.18, 0.25±0.17, 0.46±0.19 and 0.42±0.16, respectively. Heritability estimates
for lifetime performance traits were found to be high and ranged from 0.40±0.19 (no of days in
milk) to 0.91±0.25 (lifetime milk yield). FLMY had high positive genetic correlations with FLL, FSP,
FCI, and FPY but negative with FDP. The corresponding Phenotypic correlations were also significant
and positive with FLL, FSP, FCI and FPY whereas, significant and negative with FDP. First lactation
milk yield and first peak yield had positive genetic correlation with lifetime traits. These results
suggested that selection based on FLMY and FPY individually or in combination would improve
lifetime production.
were used. Heritability estimates for age at first calving, first lactation milk yield, first lactation length,
first service period, first dry period, first calving interval and first peak yield were 0.49±0.18,
0.13±0.09, 0.47±0.18, 0.25±0.17, 0.46±0.19 and 0.42±0.16, respectively. Heritability estimates
for lifetime performance traits were found to be high and ranged from 0.40±0.19 (no of days in
milk) to 0.91±0.25 (lifetime milk yield). FLMY had high positive genetic correlations with FLL, FSP,
FCI, and FPY but negative with FDP. The corresponding Phenotypic correlations were also significant
and positive with FLL, FSP, FCI and FPY whereas, significant and negative with FDP. First lactation
milk yield and first peak yield had positive genetic correlation with lifetime traits. These results
suggested that selection based on FLMY and FPY individually or in combination would improve
lifetime production.
KEYWORDS
REFERENCES
- Acharya, R.M. and Nagpal, M.P. (1971). Indian J. Anim. Sci. 41: 511-514.
- Bhatnagar, D.S., et al. (1983). Indian J. Dairy Sci. 36: 402-406.
- Dalal, D.S., et al. (2002). Indian J. Anim. Sci. 72(5): 398-401.
- Dhaka, S.S. (1997). Ph.D. Thesis, CCS Haryana Agric. Univ., Hisar, India.
- Gandhi,R.S. and Gurnani, M. (1988). Indian J. Anim. Sci. 58: 260-262.
- 48 INDIAN JOURNAL OF ANIMAL RESEARCH
- Henderson, C.R. (1953). Biometrics, 9: 226-252.
- Jai Rath, L.K., et al. (1994). J. Dairy Sci. 77: 303-312.
- Kaushik, S.N., et al., (1994). Indian J. Anim. Sci. 64: 1104-1107.
- Khanna, M.C. and Bhatnagar, D.S. (1986). Indian J. Heridity 18: 11-17.
- Khanna, R.S. and Bhat, P.N. (1971). Indian J. Anim. Sci. 41: 1091-1098.
- Norman, H.D., et al. (1996). J. Dairy Sci. 79: 689-701.
- Panda, P.B. and Sandhu, D.P. (1982). Indian Vet. J. 59: 527-532.
- Pundir, R.K. (1991). Ph.D. Thesis, Indian Veterinary Research Institute, Izatnagar, India.
- Pundir, R.K. and Raheja, K.L. (1994). Indian J. Anim. Sci. 64: 1219-1225.
- Raheja, K.L. (1992). Indian J. Dairy Sci. 45: 64-69.
- Reddy, C.O. and Basu, S.B. (1986). Indian J. Anim. Sci. 56: 1156-1160.
- Reddy, K.M. and Nagarcenkar, R. (1989). Indian J. Dairy Sci. 42(2): 382-383.
- Robertson, A. (1959). Biometrics 15: 469-485.
- Singal, D.K. (1993). M.V.Sc. Thesis, CCS Haryana Agric. Univ., Hisar, India.
- Singh, N. (1998). M.V.Sc. Thesis, CCS Haryana Agric. Univ., Hisar, India.
- Singh, R.N. et al., (1995). J. Dairying, Foods and Home Sci. 14: 61-64.
- Swiger, L.A. et al., (1964). Biometrics, 20: 818-826.
- Thakur, Yash Pal. (1997). Ph.D. Thesis, C.S. Azad Univ. Agric. And Technology,
- Mathura Campus, Mathura, India.
Disclaimer :
All claims expressed in this article are solely those of the authors and do not necessarily represent those of their affiliated organizations, or those of the publisher, the editors and the reviewers. Any product that may be evaluated in this article or claim that may be made by its manufacturer is not guaranteed or endorsed by the publisher.
Copyright :
This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
In this Article
APC
APC cover the cost of turning a manuscript into a published manuscript through peer-review process, editorial work as well as the cost of hosting, distributing, indexing and promoting the manuscript.
Publish With US
Submit your manuscript through user friendly platform and acquire the maximum impact for your research by publishing with ARCC Journals.
Become a Reviewer/Member
Join our esteemed reviewers panel and become an editorial board member with international experts in the domain of numerous specializations.
Open Access
Filling the gap between research and communication ARCC provide Open Access of all journals which empower research community in all the ways which is accessible to all.
Products and Services
We provide prime quality of services to assist you select right product of your requirement.
Support and Policies
Finest policies are designed to ensure world class support to our authors, members and readers. Our efficient team provides best possible support for you.
Follow us
Published In
Indian Journal of Animal Research