SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549


                                  SCHEDULE 13D

                    UNDER THE SECURITIES EXCHANGE ACT OF 1934
                               (AMENDMENT NO. 1)*



                                  BIGMAR, INC.
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                                (Name of Issuer)

                          COMMON STOCK, $.001 PAR VALUE
--------------------------------------------------------------------------------
                         (Title of Class of Securities)

                                   089893-10-1
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                                 (CUSIP Number)

                               Norman Alpert, Esq.
                        Sonnenschein Nath & Rosenthal LLP
                           1221 Avenue of the Americas
                          New York, New York 10020-1089
                                 (212) 768-6700
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   (Name, Address and Telephone Number of Person Authorized to Receive Notices
                              and Communications)

                                DECEMBER 31, 2003
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             (Date of Event which Requires Filing of this Statement)


If the filing person has previously  filed a statement on Schedule 13G to report
the  acquisition  which is the subject of this  Schedule 13D, and is filing this
schedule because of ss.ss. 240.13d-1(e), 240.13d-1(f) or 240.13d-1(g), check the
following box. [ ]

NOTE:  Schedules  filed in paper format shall include a signed original and five
copies of the schedule,  including all exhibits.  See  ss.240.13d-7(b) for other
parties to whom copies are to be sent.

*The  remainder of this cover page shall be filled out for a reporting  person's
initial filing on this form with respect to the subject class of securities, and
for  any  subsequent   amendment   containing   information  which  would  alter
disclosures provided in a prior cover page.

The information required on the remainder of this cover page shall not be deemed
to be "filed" for the purpose of Section 18 of the  Securities  Exchange  Act of
1934 ("Act") or otherwise  subject to the liabilities of that section of the Act
but  shall be  subject  to all other  provisions  of the Act  (however,  see the
Notes).

                                  Page 1 of 5




                                  SCHEDULE 13D

---------------------- -------------------------------------------- ------------
CUSIP NO. 089893-10-1                                                Page 2 of 5
---------------------- -------------------------------------------- ------------
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  1     NAME OF REPORTING PERSON
        S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS

        Banca del Gottardo
------ -------------------------------------------------------------------------
  2     CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*             (a) [ ]
                                                                      (b) [ ]
------ -------------------------------------------------------------------------
  3     SEC USE ONLY
------ -------------------------------------------------------------------------
  4     SOURCE OF FUNDS*

        WC, OO
------ -------------------------------------------------------------------------
  5     CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO
        ITEMS 2(d) or 2(e)                                                [ ]
------ -------------------------------------------------------------------------
  6     CITIZENSHIP OR PLACE OF ORGANIZATION

        Switzerland
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  NUMBER OF           7          SOLE VOTING POWER  7,201,667
   SHARES         -----------  -------------------------------------------------
BENEFICIALLY          8          SHARED VOTING POWER  1,280,200(1)
  OWNED BY       -----------  --------------------------------------------------
    EACH              9          SOLE DISPOSITIVE POWER  7,201,667
  REPORTING      -----------  --------------------------------------------------
PERSON WITH          10          SHARED DISPOSITIVE POWER  1,280,200(1)
--------------------------------------------------------------------------------
  11    AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
                                 8,481,667
------ -------------------------------------------------------------------------
  12    CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES*
                                                                          [ ]
------ -------------------------------------------------------------------------
  13    PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
                                 47.2%
------ -------------------------------------------------------------------------
  14    TYPE OF REPORTING PERSON*
                                 BK(2)
------ -------------------------------------------------------------------------


                      *SEE INSTRUCTIONS BEFORE FILLING OUT!
          INCLUDE BOTH SIDES OF THE COVER PAGE, RESPONSES TO ITEMS 1-7
      (INCLUDING EXHIBITS) OF THE SCHEDULE AND THE SIGNATURE ATTESTATION.


------------------

(1)  Held for the benefit of third parties or in customer or fiduciary  accounts
     over which the Bank has discretionary authority.

(2)  The  Reporting  Person  has  received  relief  from  the  SEC to  file as a
     "Qualified Institutional Investor."

                                  Page 2 of 5



     This  Amendment No. 1 amends the Statement on Schedule 13D filed on July 7,
2003 (the  "Original  13D")  relating to the Common  Stock,  par value $.001 per
share (the "Shares"),  of Bigmar,  Inc., a Delaware  corporation (the "Issuer").

ITEM 4. PURPOSE OF THE TRANSACTION.

     Item 4 of the original 13D is hereby amended and supplemented as follows:

     The Issuer failed to pay its 4% Convertible Notes due October 29, 2003 (the
"4% Notes") upon the maturity thereof.  The Reporting Person holds CHF 1,500,000
principal  amount  (currently  approximately  $1,199,000)  of the 4%  Notes  and
accounts  managed  on a  discretionary  basis by the  Reporting  Person  hold an
additional CHF 1,300,000 (currently  approximately  $1,039,000) of the 4% Notes.
The Reporting Person is currently evaluating its intentions with respect to, and
possible  actions against,  the Issuer  regarding this default,  and has not yet
decided upon its course of action.

ITEM 5. INTEREST IN SECURITIES OF THE ISSUER.

     Item 5 of the Original 13D is hereby amended and supplemented as follows:

     The  Reporting  Person  continues to  beneficially  own for its own account
7,201,667  shares,  of which  4,628,667 are Shares  issuable upon  conversion of
preferred stock, convertible notes or warrants, at conversion or exercise prices
which are very  substantially  above the  current  market  price of the  Shares.
However, in customer and fiduciary accounts managed by the Reporting Person on a
discretionary  basis, the Reporting Person may now be deemed to beneficially own
1,280,200  Shares,  rather than the 1,495,867  Shares  disclosed in the Original
13D. This  decrease  results from  termination  of  discretionary  mandates from
certain clients as to customer  accounts which held 215,667  Shares.  943,800 of
the 1,280,200  Shares which continue to be managed by the Reporting  Person on a
discretionary  basis are Shares  issuable upon  conversion  of preferred  stock,
convertible  notes or warrants,  at conversion or exercise prices

                                   Page 3 of 5




which are very  substantially  above the  current  market  price of the  Shares.
Accordingly,  the Reporting  Person may be deemed to beneficially  own 8,481,667
Shares  (approximately  47.2% of  outstanding  Shares),  of which  5,572,467 are
Shares  issuable  upon  conversion  of  preferred  stock,  convertible  notes or
warrants  (including  492,800 Shares  issuable upon  conversion of the 4% Notes,
which were not repaid by the Issuer upon  maturity),  at  conversion or exercise
prices  which are very  substantially  above  the  current  market  price of the
Shares. The number of outstanding Shares is based on the last outstanding Shares
number disclosed by the Issuer (10,168,973) in its Form 10-QSB for the Quarterly
Period ended  September 30, 2001,  filed on November 15, 2001, to which has been
added 2,238,000 Shares subsequently issued to the Reporting Person and 5,572,467
Shares issuable to the Reporting Person (or customer or fiduciary accounts which
it manages) upon conversion or exercise of derivative securities. The Issuer may
have issued additional Shares to other persons subsequent to the above-mentioned
2001 Form  10-QSB.  The  outstanding  Shares  number also does not reflect  very
substantial  numbers of Shares which the Reporting  Person believes are issuable
to other persons upon exercise of derivative securities held by them.





                                  Page 4 of 5



                                   SIGNATURES

     After reasonable inquiry and to the best of the undersigned's knowledge and
belief,  the  undersigned  certifies  that  the  information  set  forth in this
statement is true, complete and correct.

Dated: February 5, 2004

                                    BANCA DEL GOTTARDO


                                    By:   /S/ LUCA SONCINI
                                          ------------------------------------
                                          Name:  Luca Soncini
                                          Title: Member of the Executive Board


                                    By:   /S/ FLAVIO FACCHIN
                                          ------------------------------------
                                          Name:  Flavio Facchin
                                          Title:  Director





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