Hostname: page-component-586b7cd67f-gb8f7 Total loading time: 0 Render date: 2024-12-02T19:20:58.511Z Has data issue: false hasContentIssue false
  • English
  • Français

Genetic and environmental effects on milk yield of Pitangueiras cattle

Published online by Cambridge University Press:  02 September 2010

R. B. Lôbo ,
F. A. M. Duarte ,
A. A. M. Gonçalves ,
J. A. Oliveira  and
C. J. Wilcox
R. B. Lôbo
Affiliation:
Department of Genetics, Faculty of Medicine of Ribeirāo Preto, USP, 14100 Ribeirāo Preto, Sāo Paulo, Brazil
F. A. M. Duarte
Affiliation:
Department of Genetics, Faculty of Medicine of Ribeirāo Preto, USP, 14100 Ribeirāo Preto, Sāo Paulo, Brazil
A. A. M. Gonçalves
Affiliation:
Department of Genetics, Faculty of Medicine of Ribeirāo Preto, USP, 14100 Ribeirāo Preto, Sāo Paulo, Brazil
J. A. Oliveira
Affiliation:
Department of Zootechny, Faculty of Agronomy of Ilha Solteira, UNESP, 15378, Ilha Solteira, Sāo Paulo, Brazil
C. J. Wilcox
Affiliation:
Dairy Science Department, Institute of Food and Agricultural Science, University of Florida, Gainesville, Florida 32611, USA
Get access

Abstract

Data from 5270 lactation records of 1380 cows sired by 132 bulls and recorded from 1962 to 1977 were analysed. Statistical analyses, using least squares and maximum likelihood methods, showed significant effects for genetic group, age of cow, month and year of calving, and lactation length. Overall mean milk yield was 2780 kg (CV = 0·31) with mean lactation length of 281 days. Maximum production occurred in the fifth lactation (104 or 105 months of age at calving) with a yield of 1·3 times that of the first lactation. Repeatability estimated by intraclass correlation was 0·40 (s.e. 0·03). Heritability estimated from paternal half-sib correlation was 0·16 (s.e. 0·06). Overall results were very similar to those obtained from research with European breeds in temperate areas.

Type
Research Article
Information
Animal Production , Volume 39 , Issue 2 , October 1984 , pp. 157 - 163
Copyright
Copyright © British Society of Animal Science 1984

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

Cevallos, E., Herrera, M. E., Riera, R., Rios, C. E. and Bodisco, V. 1968. [Behaviour of cattle from the Corora region during the period 1961–1965.] Bol. Tec. M.A.C., No. I.Google Scholar
Dutt, M. and Singh, S. B. 1961. Effect of the season of calving on the milk yield, peak yield and lactation period in Hariana cattle. Indian J. Dairy Sci. 14: 161–165.Google Scholar
Harvey, W. R. 1977. User's guide for LSML76. Mixed model least-squares and maximum likelihood computer program. Ohio State Univ., Columbus. (Mimeograph).Google Scholar
Hayman, R. H. 1974. The development of the Australian milking Zebu. Wld Anim. Rev. 11: 31–35.Google Scholar
Henderson, C. R., Kempthorne, O., Searle, S. R. and Krosigk, C. M. von. 1959. The estimation of environmental and genetic trends from records subject to culling. Biometrics 15: 192–218.CrossRefGoogle Scholar
Kohli, M. L., Suri, K. R., Bhatnagar, V. K. and Lohia, K. L. 1961. Studies of some economic characters in relation to age at first calving in Hariana cattle. Indian J. Dairy Sci. 14: 154–160.Google Scholar
Kooner, D. S. 1963. Heritability and repeatability of milk yield. Indian J. Dairy Sci. 16: 266 (Abstr.).Google Scholar
Lôbo, R. B. 1974. [Genetic evaluation of milk production from the Pitangueiras herd.] M.S. Thesis, Fac. Medicine, Univ. Ribeirao Preto, Sāo Paulo, Brazil.Google Scholar
Lôbo, R. B. 1976. [Genetic study on the reproductive performance and production of Pitangueiras cattle.] Ph.D. Thesis, Fac. Medicine Univ. Ribeirdo Preto, Sāo Paulo, Brazil.Google Scholar
Lôbo, R. B., Duarte, F. A. M. and Bezerra, L. A. F. 1979. Factors affecting milk production of Pitangueiras cattle in Brazil. Revta Bras. Genét. 2: 199–209.Google Scholar
Lôbo, R. B., Seki, K., Masotti, N., Ghion, E. and Nali, L. 1979. [Information on reproductive and productive aspects of a dairy herd in the county of Pirassununga, Sao Paulo, Brazih] VII Reunion Anual da ALPA, Anais, G26.Google Scholar
Lush, J. L. and Shrode, R. R. 1950. Changes in milk production with age and milking frequency. ]. Dairy Sci. 33: 338–357.CrossRefGoogle Scholar
Miller, P. D., Lentz, W. E. and Henderson, C. R. 1970. Joint influence of month and age of calving on milk yield of Holstein cows in the northeastern United States. J. Dairy Sci. 53: 351–357.CrossRefGoogle Scholar
Moya, J. 1977. Maximum likelihood estimation of genetic trends in milk yield and composition in the Florida Experimental Station dairy herd. M.Sc. Thesis, Univ. Florida.Google Scholar
Rodriguez, F. 1974. Age effects upon milk production in Ecuadorian Holsteins. M.Sc. Thesis, Univ. Florida.Google Scholar
Roman, J. 1970. Genetics of milk production in Ecuador. Ph.D. Thesis, Univ. Florida.Google Scholar
Sinha, B. N. 1951. Taylor cows of Patna. Indian vet. J. 27: 272–276.Google ScholarPubMed
Swiger, L. A., Harvey, W. R., Everson, D. O. and Gregory, K. E. 1964. The variance of intraclass correlation involving groups with one observation. Biometrics 20: 818–826.CrossRefGoogle Scholar
Verde, O., Wilcox, C. J., Koger, M., Plasse, D. and Martin, F. G. 1972. [Genetic and environmental influences and their interactive effect on milk production in Venezuela.] Mems Asoc. Lat.-am. Prod. Anim. 7: 117–135.Google Scholar
Wellington, K. E. and Mahadevan, P. 1975. Development of the Jamaica Hope breed of dairy cattle. Wld Anim. Rev. 15: 27–32.Google Scholar