eOrganic author:
Linda Tikofsky, Cornell University
| AUTHOR | COUNTRY | YEAR | # HERDS | # COWS | BULK MILK SCC (cells/ml) | CLINICAL MASTITIS | CONCLUSIONS | ||||
| ORG* | CONV* | ORG* | CONV* | ORG* | CONV* | ORG* | CONV* | ||||
| Weller and Cooper | UK | 1995 | 11 | Year 1: 270,700 Year 2: 299,000 | Year 1: .40/CY Year 2: .46/CY | ||||||
| Busato, et al. | Switzerland | 1997 | 152 | 1907 | 86,000 | High prevalence of subclinical mastitis in Alpine dairies; number of mastitis treatments was that of conventional | |||||
| Hamilton, et al. | Sweden | 1998 | 26 | .09/CY | .15/CY | No evidence to support that cows in organic herds are more prone to disease | |||||
| Weller and Bowling | UK | 1998 | 10 | National data | 250,000 | 167,000 | .35/CY | .37/CY | Clinical mastitis treatment frequency did not differ between organic and conventional herds. | ||
| Hovi and Roderick | UK | 1999 | 16 | 7 | 135,000 | 84,000 | .36/CY (overall) .37/CY(lactation) .28/CY (dry) | .49/CY (overall) .54/CY(lactation) .09/CY (dry) | |||
| Toledo, et al. | Sweden | 2000 | 31 | Small: 175,000 Large: 198,000 | Small: 205,000 Large: 186,000 | ||||||
| Hardeng and Edge | Norway | 2001 | 31 | 93 | 264,000 | 246,000 | lower | higher | Fewer mastitis treatments than conventional | ||
| Bennedsgaard, et al. | Denmark | 2001 | 29 Old organic (OO) 35 Moderately new organic (MO) 18 newly organic (NO) | 99 | 270,000 (OO) 320,000 (MO) 330,000 (NO) | 310,000 | .33/ CY(OO) .50/CY(MO) .46/CY (NO) | .58/CY | The longer a herd is in organic production, the better its cell counts. | ||
| Nauta, et al. | Netherlands | 2002 | 325 newly organic (NO) 42 old organic (OO) | 966 | 19,107 (NO) 2639 (OO) | 115,058 | (cow samples) 70794 (NO) 2639 (OO) | (cow samples) 63,000 | The longer a herd is organic, the higher the somatic cell count score | ||
| Hoerning, et al. | Germany | 2003 | 74 | - | 222,797 | More subclinical mastitis as indicated by higher SCC | |||||
| Ellis, et al. | UK | 2003 | 7 | 7 | 205,615 | 191,400 | Cow cleanliness was related to bulk milk SCC | ||||
| Roesch, et al. | Switzerland | 2007 | Visit 1: 52,700 Visit 2: 55,300 | Visit 1: 38,000 Visit 2: 47,700 | Subclinical mastitis is a greater problem on organic farms but the difference is not marked. | ||||||
* ORG = Organic, CONV = Conventional
