Day 103 - 14 Mar 95 - Page 44


     
     1        time so that is the way that that is managed.
     2
     3   Q.   Which one is that, the 24 hour one?
     4        A.  Amoxicillin.
     5
     6   MR. JUSTICE BELL:  While you are on that, are you going to ask
     7        about the answer you got the other day about antibiotic
     8        resistance from Mr. Kenny?  I will ask it, if you like.
     9
    10   MS. STEEL:  I cannot remember.
    11
    12   MR. JUSTICE BELL (To the witness):  Because I think it was
    13        inconsistent with something you said when you were
    14        previously here.  Mr. Kenny suggested, when being asked
    15        about a build up of human resistance to antibiotic effect,
    16        that the antibiotics used in animals were not normally the
    17        same as those used in human beings.  You had said when you
    18        were last with us, if my recollection is correct, that,
    19        generally speaking, the same panorama of antibiotics were
    20        used?
    21        A.  There is a similar -- there are similar compounds used
    22        for treating animals.  The only thing is that there is a
    23        much wider variety of antibiotics that are licensed for
    24        treatment of human beings.  So, while we have a choice of
    25        maybe only three or four antibiotics for human beings, they
    26        would have a choice of those plus some others.
    27
    28   Q.   But the ones which you use are ones which are in the
    29        therapy list for ---
    30        A.  Yes they could be, yes.
    31
    32   Q.   -- people?
    33        A.  That is right, yes.
    34
    35   MS. STEEL:  The antibiotics in the water supply, you would still
    36        have to withdraw the antibiotics at a time in the middle of
    37        the treatment for the male birds, would you not?
    38        A.  It depends when you start the treatment.
    39
    40   Q.   There would be some circumstances when that would happen?
    41        A.  It could happen, yes.
    42
    43   MR. JUSTICE BELL:  That is what you have just said, that if you
    44        put it in the water, instead of the feed, you may be able
    45        to keep it down to 24 hours or 48 hours rather than the
    46        longer period which would prevail if it was in feed?
    47        A.  Yes.
    48
    49   Q.   But you still have to have the one or two day break?
    50        A.  That is right. 
    51 
    52   MS. STEEL:  That could affect the likelihood of birds being 
    53        cured or whatever?
    54        A.  Yes, it could do.
    55
    56   Q.   What do you do when the antibiotics are in the water supply
    57        and you have to withdraw them?  Do you actually clean out
    58        the whole system?
    59        A.  No, the antibiotic goes through the system.  We
    60        normally use a pulse dosing system where the daily dose is

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