Herd health and health management in organic versus conventional dairy herds in Norway

Valle, Paul Steinar; Lien, Gudbrand; Flåten, Ola; Koesling, Matthias; Ebbesvik, Martha

doi:10.1016/j.livsci.2007.02.005

Cited by 47 publications

(58 citation statements)

References 22 publications

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“…Lund and Algers (2003) also concluded in their literature review that 'health and welfare in organic herds are the same or better (and thus less stressful) than in conventional herds'. This is also confirmed by several other studies (Roesch et al, 2007;Valle et al, 2007;Fall and Emanuelson, 2009;Garmo et al, 2010). The current study has confirmed as well that the expressed heterosis is reasonably independent of the environment of the animal.…”

Section: Farm Systems and Breedssupporting

confidence: 92%

“…Reasons why there could be differences are, first, because parity seems to have an influence on the expression of heterosis (Touchberry, 1992). The average age of cows on organic farms is generally slightly higher (Valle et al, 2007); that is, in the Netherlands 6 months older than conventional cows (Smolders et al, 2005), and therefore the effect of parity might be different on organic farms than on conventional farms. Second, the effect of heterosis is generally higher in a stressful environment compared with a supportive environment (Barlow, 1981).…”

Section: Discussionmentioning

confidence: 99%

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Suitability of cross-bred cows for organic farms based on cross-breeding effects on production and functional traits

Haas

Smolders

Hoorneman

et al. 2013

Animal

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Data from 113 Dutch organic farms were analysed to determine the effect of cross-breeding on production and functional traits. In total, data on 33 788 lactations between January 2003 and February 2009 from 15 015 cows were available. Holstein-Friesian pure-bred cows produced most kg of milk in 305 days, but with the lowest percentages of fat and protein of all pure-bred cows in the data set. Cross-breeding Holstein dairy cows with other breeds (Brown Swiss, Dutch Friesian, Groningen White Headed, Jersey, Meuse Rhine Yssel, Montbé liarde or Fleckvieh) decreased milk production, but improved fertility and udder health in most crossbred animals. In most breeds, heterosis had a significant effect (P , 0.05) on milk (kg in 305 days), fat and protein-corrected milk production (kg in 305 days) and calving interval (CI) in the favourable direction (i.e. more milk, shorter CI), but unfavourably for somatic cell count (higher cell count). Recombination was unfavourable for the milk production traits, but favourable for the functional traits (fertility and udder health). Farm characteristics, like soil type or housing system, affected the regression coefficients on breed components significantly. The effect of the Holstein breed on milk yield was twice as large in cubicle housing as in other housing systems. Jerseys had a negative effect on fertility only on farms on sandy soils. Hence, breed effects differ across farming systems in the organic farming and farmers can use such information to dovetail their farming system with the type of cow they use.

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Section: Farm Systems and Breedssupporting

confidence: 92%

Section: Discussionmentioning

confidence: 99%

Suitability of cross-bred cows for organic farms based on cross-breeding effects on production and functional traits

Haas

Smolders

Hoorneman

et al. 2013

Animal

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“…Ca, Zn, Mg and Cu contents did not significantly differ in both types of milks, but the Fe content was higher in organic milk. Such data are similar to what has been reported by the researchers in different countries [9,33].…”

Section: Chemical Composition Of Milksupporting

confidence: 92%

Increased CLA content in organic milk fermented by bifidobacteria or yoghurt cultures

Florence

Silva

Santo

et al. 2009

Dairy Sci. Technol.

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-This study investigates the kinetics of acidification, fatty acid (FA) profile and conjugated linoleic acid (CLA, C18:2 c9, t11) content in fermented milks prepared from organic and conventional milk. Fermented milks were manufactured with five mixed cultures: four different strains of Bifidobacterium animalis subsp. lactis (BL04, B94, BB12 and HN019) and Lactobacillus delbrueckii subsp. bulgaricus LB340, in co-culture with Streptococcus thermophilus TA040. The composition of milk was evaluated, and the kinetics of acidification was followed by continuous pH measurement using the Cinac system. The profile of FA, including CLA, was analyzed by gas chromatography. The chemical composition of conventional and organic milk was similar, with the exception of protein and Fe, the concentrations of which were higher in the organic milk. The rate of acidification was significantly influenced by the type of milk and the bacterial strain used. Co-cultures St-HN019 and St-BB12 showed higher maximal acidification rates in both milks. Final counts of S. thermophilus (9.0-10.1 log 10 colony forming units (CFU)·mL −1 ), Lactobacillus bulgaricus (8.2-8.5 log 10 CFU·mL −1 ) and B. animalis subsp. lactis strains (8.3-9.3 log 10 CFU·mL −1 ) did not differ significantly in either milk. Unexpectedly, all fermented organic milks contained significantly higher amounts of CLA than the same milk before fermentation, whereas CLA amounts did not change during fermentation of conventional milk. Regardless of the type of milk, CLA was found to be significantly positively correlated with trans-vaccenic acid and negatively correlated with linoleic acid. Moreover, the CLA contents were significantly higher in fermented milks showing shorter fermentation times. acidification profile / fermented milk / Bifidobacterium animalis subsp. lactis / organic milk / conjugated linoleic acid / trans-vaccenic acid Article published by EDP Sciences 料乳中，St-HN019 和 St-BB12 共发酵菌株表现出最大的酸化速率; S. thermophilus (9.0 10.1 log 10 cfu·mL −1 )、L. bulgaricus (8.2 8.5 log 10 cfu·mL −1 ) 和 B. animalis subsp. lactis strains (8.3 9.3 log 10 cfu·mL −1 ) 在两种乳中的最后菌数没有显著差异○ 出乎意料的是有机乳发酵后 CLA 含量显著地提高，但是普通乳发酵前后 CLA 含量没有变化○ 如果不考虑乳的类型，CLA 含量与反式-十八碳烯酸呈正相关，与亚油酸含量呈负相关○ 此外，发酵时间短的发酵乳中 CLA 含量较高○ 酸化特性 / 益生性发酵乳 / 有机乳 / 共轭亚油酸 / 反式-十八碳烯酸 Résumé -Teneur en acide linoléique conjugué accrue dans des laits biologiques fermentés par des bifidobactéries et des levains à yaourt. Cette étude a pour but d'examiner les cinétiques d'acidification, les profils en acides gras et les teneurs en acide linoléique conjugué (CLA, C18:2 c9, t11) de laits fermentés préparés à partir de lait biologique et conventionnel. Des laits fermentés ont été produits avec cinq types de cultures mixtes : quatre souches de Bifidobacterium animalis subsp. lactis (BL04, B94, BB12 et HN019) et Lactobacillus delbrueckii subsp. bulgaricus LB340, en co-culture avec S. thermophilus TA040. La composition du lait était évaluée et les cinétiques d'acidification étaient suivies par mesure continue du pH à l'aide du système C...

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“…The farmers were going through an empowering development process, enabling and stimulating them to take decisions and improve their own life situations based on an analysis of the herd and farm situation (Vaarst, 2007). In a recent Norwegian study it was concluded that the difference in incidence rate of veterinary treatment between organic and conventional herds was related to differences in attitudes towards treatment (Valle et al, 2007). Based on the results of this study, the authors suggest a similar conclusion and that profound change can be introduced over a short period of time when the farmers are motivated.…”

Section: Patterns Of Reducing Antibiotic Usesupporting

confidence: 55%

Reducing use of antimicrobials — Experiences from an intervention study in organic dairy herds in Denmark

2010

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With the aim of phasing out the use of antimicrobials 23 Danish organic dairy producers from the same organic dairy company participated in Stable School farmer groups from February 2004 to March 2005 in order to go through a common learning and development process towards their common goal. Data on production and herd health were evaluated from two years before to three years after the start of the Stable Schools. For comparison, data was collected from the remaining 35 herds delivering to the same dairy company, 118 organic dairy herds delivering to other dairies and 115 conventional herds. On average, the project herds were smaller with lower production and had half the incidence rate of mastitis treatment than the organic herds from other dairies before the start of the project. The incidence rate of mastitis treatments was reduced considerably from 20 treatments per 100 cow years to 10 treatments per 100 cow years after the project period. Somatic cell count (SCC) and scores for acute and chronic intramammary infections did not change significantly during the study period, and milk production increased at the same rate as in the other herd groups. The incidence rate of mastitis treatments or the reduction of the incidence rate could be related to the herd SCC or the prevalence of blind quarters. The incidence rates of locomotive disorders and reproductive disorders were lower in the project herds compared with herds from other dairies before the project start, and the differences increased during the project period though the reduction of the incidence rates in the project herds was not statistically significant. It is concluded that the farmers participating in the Stable Schools managed to reduce the use of antimicrobials in their herds also after the project period without apparent negative effects on production and udder and herd health.

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Herd health and health management in organic versus conventional dairy herds in Norway

Cited by 47 publications

References 22 publications

Suitability of cross-bred cows for organic farms based on cross-breeding effects on production and functional traits

Suitability of cross-bred cows for organic farms based on cross-breeding effects on production and functional traits

Increased CLA content in organic milk fermented by bifidobacteria or yoghurt cultures

Reducing use of antimicrobials — Experiences from an intervention study in organic dairy herds in Denmark

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