CRITICAL POINTS IN THE FEEDING OF HIGH YIELDING DAIRY COWS IN ASSOCIATION WITH BCS AND METABOLIC PROFILE TEST Gerg - PowerPoint PPT Presentation

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CRITICAL POINTS IN THE FEEDING OF HIGH YIELDING DAIRY COWS IN ASSOCIATION WITH BCS AND METABOLIC PROFILE TEST Gerg

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CRITICAL POINTS IN THE FEEDING OF HIGH YIELDING DAIRY COWS IN ASSOCIATION WITH BCS AND METABOLIC PROFILE TEST Gerg cz, Z., Sz cs, E. University of West Hungary ... – PowerPoint PPT presentation

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Title: CRITICAL POINTS IN THE FEEDING OF HIGH YIELDING DAIRY COWS IN ASSOCIATION WITH BCS AND METABOLIC PROFILE TEST Gerg


1
CRITICAL POINTS IN THE FEEDING OF HIGH YIELDING
DAIRY COWS IN ASSOCIATION WITH BCS AND METABOLIC
PROFILE TESTGergácz, Z., Szucs, E.University
of West Hungary, Faculty of Agricultural and Food
SciencesMosonmagyaróvár, Hungary
2
AIM OF THE STUDY
  • The aim of the study was to analyse the
    relationship between the body condition and the
    results of metabolic profile test have been done
    in dairy cows in different days in milk (DIM).

3
INTRODUCTION
  • Body Condition Score (BCS) is a useful
    management tool to assess body fat stores
    especially in Holstein dairy cows. The method is
    based on a visual and tactile appraisal of
    body fat reserves in the back and
    pelvic regions and BCS is usually scored on a
    scale of 1 to 5. (Edmonson et al. 1989).
  • The BCS has been proposed to measure
    changes in body reserve as a result of negative
    energy balance (Berry et al., 2002).

4
INTRODUCTION
  • Dairy cattle, like most lactating mammals, are
    usually in negative energy balance in the first
    few weeks of lactation (Nielsen, 1999)
  • The selection for milk yield increases the gap
    between energy input and output during early
    lactation because DMI has not been included
    directly in the breeding goal (Veerkamp and
    Brotherstone, 1998)

5
INTRODUCTION
  • High yielding dairy cows express more severe
    prolonged negative energy balance, which
    results in greater biological stress.This
    stress may impact upon the reproduction
    and immune systems leading to fertility and
    health problems during and beyond the
    negative energy balance period (Berry et al.,
    2002).

6
MATERIAL AND METHODS
  • Blood samples (N 1984) were taken
    from clinically healthy, randomly selected
    animals (1-14 days before calving, 1-30
    after calving, and older than 30 days
    after calving). Samples were taken after the
    morning feeding in the 3-5 hours.
  • Physiological values in samples taken
    were analysed as follows bloods
    haemoglobin, the plasmas aceto-acetic acid,
    FFA, glucose, urea concentration and ASTs
    activity value, and the urines pH, NABE and
    urea parameters.
  • Brydl summarized the normal values
    (reference values) characterizing the
    metabolism of dairy cows. (The brown dotted
    lines are shown in the Figures also.)
  • Simultaneously, body condition of all animals
    was evaluated using a 5 point scale.

7
RESULT OF FACTOR ANALYSIS
8
RESULTS
(P0.001)
9
RESULTS
(P0.001)
10
RESULTS
(P0.01)
11
RESULTS
(P0.05)
12
RESULTS
(P0.01)
13
RESULTS
(P0.01)
14
RESULTS
(P0.01)
15
RESULTS
(P0.05)
16
CONCLUSION
  • According to our results could validated may
    estimate the critical periods of lactation
    by the BCS and metabolic profile tests in
    high yielding dairy cows.
  • The largest risks of diseases and economic
    damage were in first 50 DIM after calving. The
    normal rumen functions and the harmonious
    nutriment supply according to the needs
    of the animals should be reinstated by
    optimizing the TMR formulas.
  • The results of the study confirm that
    the body condition scoring is a reliable
    and cheap tool for revealing the risk of
    metabolic disorders caused by malnutrition.

17
AIM OF OUR WORK
18
THANK YOU FOR ATTENTION
Multumesc pentru atentia Dumneavoastra !
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