Survivorship approaches to measuring and comparing cull rates for dairies

Preventive Veterinary Medicine

Volumn 30, Issue 2, 1997, Pages 171-179

  Karuppanan, Palanisamy ^a   Thurmond, Mark C ^b   Gardner, Ian A ^b  

^a Regional Veterinary Laboratory   (Malaysia)

^b UNIVERSITY OF CALIFORNIA   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

AGE; AGING; ANIMAL; ANIMAL HUSBANDRY; ARTICLE; CATTLE; COHORT ANALYSIS; DAIRYING; FEMALE; LACTATION; LIFE TABLE; METHODOLOGY; PHYSIOLOGY; PROSPECTIVE STUDY; SURVIVAL RATE;

AGE FACTORS; AGING; ANIMAL HUSBANDRY; ANIMALS; CATTLE; COHORT STUDIES; DAIRYING; FEMALE; LACTATION; LIFE TABLES; PROSPECTIVE STUDIES; SURVIVAL RATE;

EID: 0031134842     PISSN: 01675877     EISSN: None     Source Type: Journal    
DOI: 10.1016/S0167-5877(96)01076-8     Document Type: Article

References (8)

1. Cobo-Abreu, R., Martin, S.W., Stone, J.B. and Willoughby, R.A., 1979. The rates and patterns of survivorship and disease in a university dairy herd. Can. Vet. J., 20: 177-183.
2. Congleton, W.R., 1988. Dairy cow culling decisions. 2. Profitability and genetic trend in herds with culling on production versus income. J. Dairy Sci., 71: 1905-1915.
3. Cox, D.R., 1972. Regression models and life tables. J. R. Stat. Soc., Ser. B, 34: 187-220.
4. Dohoo, I.R. and Martin, S.W., 1984. Disease, production and culling in Holstein-Friesian cows. V. Survivorship. Prev. Vet. Med., 2: 771-784.
5. Gardner, I.A., Hird, D.W., Utterback, W.W., Danaye-Elmi, C., Heron, B.R., Christiansen, K.H. and Sischo, W.M., 1990. Mortality, morbidity, case-fatality, and culling rates for California dairy cattle as evaluated by the National Animal Health Monitoring System, 1986-87. Prev. Vet. Med., 8: 157-170.
6. Renkema, J.A. and Stelwagen, J., 1979. Economic evaluation of replacement rates in dairy herds. I. Reduction of replacement rates through improved health. Livest. Prod. Sci., 6: 15-27.
7. Rogers, G.W., Van Arendonk, J.A.M. and McDaniel, B.T., 1988a. Influences of production and prices on optimum culling rates and annualized net revenue. J. Dairy Sci., 71: 3453-3462.
8. Rogers, G.W., Van Arendonk, J.A.M. and McDaniel, B.T., 1988b. Influence of involuntary culling on optimum culling rates and annualized net revenue. J. Dairy Sci., 71: 3463-3469.