Seasonal Variations of Strontium90 and Calcium Levels in Jersey and Holstein Milk

Journal Article · Sun Apr 01 04:00:00 EST 1962 · Journal of Dairy Science

DOI:https://doi.org/10.3168/jds.S0022-0302(62)89439-9· OSTI ID:4804469

Jarvis, Anita A.; Brown, J. R.; Arnott, D. R.

Strontium^90-, calcium, and S.U. levels were studied in the milk of 2 breeds of dairy cows. Samples collected in the spring of 1961 showed a consistently higher level of strontium⁹⁰ and S.U. values than those collected during the summer. A possible explanation for this is that, in the spring, cows were on feed collected in 1960-when levels of fallout were higher than in 1961. There was a considerable difference between the 2 breeds in both spring and summer seasons with regard to calcium and S.U. values, but there was also a significant intrabreed variation. It was noted that both calcium and lactose levels are higher in Jersey than in Holstein milk. The possibiIity of a bound form of calcium is discussed. (Public Health Eng. Abstr., 42: No. 8, Aug. 1962)

• Research Organization: Univ. of Toronto
• Sponsoring Organization: USDOE
• NSA Number: NSA-16-027503
• OSTI ID: 4804469
• Journal Information: Journal of Dairy Science, Journal Name: Journal of Dairy Science Journal Issue: 4 Vol. 45; ISSN 0022-0302
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

59 BASIC BIOLOGICAL SCIENCES
SEASONS
VALVES