Advanced SearchSearch Tips
Replacement and Lifetime Production Traits: Effect of Non-genetic Factors and Sire Evaluation
facebook(new window)  Pirnt(new window) E-mail(new window) Excel Download
 Title & Authors
Replacement and Lifetime Production Traits: Effect of Non-genetic Factors and Sire Evaluation
Singh, S.; Khanna, A.S.; Singh, R.P.;
  PDF(new window)
The present investigation was undertaken to study the effects of non-genetic factors and association among replacement and lifetime production traits. The data on 542 Holstein Friesian cows maintained during 1975-98 at State Cattle Breeding Project, Sector III, Hisar, were utilized. The average sex-ratio, abnormal births, mortality, culling and replacement rates on total calf born and total female calf born basis were 51.62, 8.50, 17.52, 31.05, 22.78 and 51.41 per cent, respectively. The study revealed that a minimum of 4 to 5 progenies are required per cow over its lifetime to replace itself. It indicated that each cow should produce a minimum of 2 female calves during its life so as to replace herself before being lost. The least-squares means for productive herd life, longevity and lifetime production were and days and , respectively. The heritability estimates for all replacement traits were very low indicating that sire selection may bring no desirable change in these traits. Heritability estimates were , and for corresponding lifetime production traits. Breeding values and ranking of sires were generated for replacement and lifetime production traits to estimate the rank correlations between these traits. Moderate desirable rank correlations were obtained between replacement rate and lifetime production traits indicating that sires proven on the basis of milk production are also expected to have better replacement rate.
Dietary Xylitol;Nitrogen Retention;Stimulation;Broiler Chicks;
 Cited by
Durocq, V., R. L. Quaas, E. J. Pollak and G. Cassella. 1988. Length of productive life of dairy cows. 2. Variance component estimation and sire evaluation. J. Dairy Sci. 71:3071-3079.

Harvey, W. R. 1980. Least-squares analysis of data with unequal sub-class numbers. U.S.D.A. ARS 20-28, USA.

Hegde, M. E. and D. S. Bhatnagar. 1985. Lifetime performance of different genetic groups of Brown Swiss crossbred cows. Indian J. Dairy Sci. 38:321-326.

Khanna, A. S., A. K. Sikka, A. K. Sinha and S. C. Chopra. 1983. Factors affecting incidence of abnormal births in crossbred cattle. Trop. Vet. Anim. Sci. 27:105-110.

Lathwal, S. S., S. S. Tomar, G. S. Verma and R. K. Malik. 1993. Factors affecting replacement rate in a herd of Red Sindhi cows. Indian J. Dairy Sci. 46:349-352.

Rawal, S. C. and S. S. Tomar. 1995. Genetic study of sex-ratio in a herd of Sahiwal cattle. Indian J. Dairy Sci. 48:311-312.

Rawal, S. C. and S. S. Tomar. 1996. Incidence and inheritance of mortality and culling rates in Tharparkar female calves up to maturity. Indian J. Dairy Sci. 49:685-688.

Reddy, C. O. and S. B. Basu. 1985. Factors affecting profit function and production traits in crossbred cattle. Indian J. Anim. Sci. 55:35-41.

Robertson, A. and I. M. Lerner. 1949. The heritability of all-ornone traits: Viability of poultry. Genetics 34:395.

Rogers, G. W., G. L. Hargrove, J. B. Cooper and H. D. Norman 1991. Management and genetic influence on survival in Jerseys. J. Dairy Sci. 74:279-285.

Sethi, R. K. and M. K. Rao. 1981. Variation in sex-ratio in dairy cattle. Indian J. Dairy Sci. 34:454-456.

Sharma, K. N. S. and D. K. Jain. 1984. Factors affecting pre-natal mortality in bovines. I. Breed, year and season differences. Indian J. Anim. Sci. 54:297-300.

Tomar, S. S. 1984. Inheritance of certain threshold characters in Murrah buffaloes. Ph.D. Thesis, Kurukshetra Univ., Kurukshetra.

Tomar, S. S. and G. S. Verma. 1988. Genetic and non-genetic variations in components of replacement rates in Tharparkar cattle. Indian J. Dairy Sci. 41:94-100.