Effect of recombinantly-derived bovine somatotropin on reproductive performance of dairy cattle

W. J. Cole, K. S. Madsen, R. L. Hintz, Robert J Collier

Research output: Contribution to journalArticle

31 Citations (Scopus)

Abstract

Data from 814 cows involved in five separate full lactation studies were used to assess the effect of recombinantly-derived methionyl bovine somatotropin (sometribove) on reproductive performance. Data were separated by parity (first and second or greater), route of administration (intramuscular: i.m. or subcutaneous: s.c.), length of breeding period (number of days in milk), and level of production (high vs low). Through 305 days in milk, pregnancy rates were reduced 18% in primiparous, sometribove-treated (i.m.) cows but were not significantly affected in multiparous cows. No differences were noted in either parity group when sometribove was administered subcutaneously. The level of production was more often found to be a significant factor affecting reproductive parameters than was sometribove administration. In general, length of the breeding period and level of milk production had a greater influence on reproductive performance than treatment with sometribove.

Original languageEnglish (US)
Pages (from-to)573-595
Number of pages23
JournalTheriogenology
Volume36
Issue number4
DOIs
StatePublished - 1991
Externally publishedYes

Fingerprint

somatotropin
dairy cattle
reproductive performance
parity (reproduction)
cows
Milk
milk
Parity
breeding
subcutaneous injection
Breeding
intramuscular injection
pregnancy rate
milk production
lactation
Pregnancy Rate
Lactation
bovine growth hormone
sometribove
Therapeutics

Keywords

  • bovine somatotropin
  • reproductive performance
  • sometribove

ASJC Scopus subject areas

  • Animal Science and Zoology
  • veterinary(all)

Cite this

Effect of recombinantly-derived bovine somatotropin on reproductive performance of dairy cattle. / Cole, W. J.; Madsen, K. S.; Hintz, R. L.; Collier, Robert J.

In: Theriogenology, Vol. 36, No. 4, 1991, p. 573-595.

Research output: Contribution to journalArticle

Cole, W. J. ; Madsen, K. S. ; Hintz, R. L. ; Collier, Robert J. / Effect of recombinantly-derived bovine somatotropin on reproductive performance of dairy cattle. In: Theriogenology. 1991 ; Vol. 36, No. 4. pp. 573-595.
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