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Conselhos para o tratamento da cetose (Confiabilidade em rebanhos Jersey)

NICO

O módulo de apoio à decisão para aconselhamento sobre o tratamento da cetose visa identificar vacas que possam estar sofrendo de cetose e recomenda uma intervenção sanitária.

Para um rebanho 100% Jersey, qual a confiabilidade?

E provavelmente o horizon está setado para que, quando a relação gordura/proteína for superior a 1,3, gera o conselho para a vaca. Mas acredito que seja para rebanhos Holstein. Teria como alterar esta relação gordura/proteína superior a 1,3? Para ter maior assertividade para demais raças?

 

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  • +2

    Hi  ,

    Thank you for your question! The model behind the ketosis advice uses the following criteria:

    • The cow is in early lactation; 
    • The cow has a medium to severe chance of sickness; 
    • Increased fat/protein ratio (the ketosis advice is less reliable in a mixed herd); 
    • Milk yield is lower than predicted milk yield;  
    • Drop in eating time;  
    • Drop in rumination time. 

    We recommend considering all these indicators before deciding whether to apply a treatment. The BHB test remains the most reliable method for confirming ketosis and deciding on treatment.In short:

    The fat/protein ratio is a indicator for detecting ketosis, but it should always be interpreted together with the other parameters listed above.

    Regarding Jersey herds and the threshold


    At the moment, it is not possible to change the fat/protein threshold. But the ratio is higher than 1.3.
    The ratio is calculated as:
    Fat % / Protein %
    A value < 1.0 means that fat % is lower than protein %.

    Examples:

    • Fat 3.2 %, Protein 3.4 % → 3.2 / 3.4 = 0.94 → Inversion
    • Fat 3.8 %, Protein 3.3 % → 1.15 → No remark
    • Fat 5.0 %, Protein 3.0 % → 1.67 → Ketosis remark

  • 0 in reply to Maud Frijhoff

    Makes sense that it’s not just based on fat/protein. If the system also looks at early lactation, milk drop, eating time and rumination, then it’s at least looking at the full picture and not just one number. That’s good. But in a Jersey herd, that fat/protein ratio still needs careful interpretation. Jerseys naturally run higher fat, so you’ll hit higher ratios quicker than Holsteins. A 1.4 or even higher doesn’t automatically mean she’s in ketosis in a Jersey herd, specially if she’s milking strong and looks fine.

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  • 0 in reply to Maud Frijhoff

    Makes sense that it’s not just based on fat/protein. If the system also looks at early lactation, milk drop, eating time and rumination, then it’s at least looking at the full picture and not just one number. That’s good. But in a Jersey herd, that fat/protein ratio still needs careful interpretation. Jerseys naturally run higher fat, so you’ll hit higher ratios quicker than Holsteins. A 1.4 or even higher doesn’t automatically mean she’s in ketosis in a Jersey herd, specially if she’s milking strong and looks fine.

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