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T H E
A S'rUDY OF
OPERA 'riON 0 F S E L E C T I 0 N
F 0 R P R 0 D U C T I 0 N
ll� A HEW ZEALAND DATfn HERD.
;.,: \ I ' '
Being the Thesis submttted by "BONUS" for the ANIMAL HUSBAUDRY SECTION of the M. AGR. SC. Examinat ton, 191-�0.
. ..
I 1Section , J • •
Section 11.
Se c tion lll.
Se cti on lV.
·section V.
I
S ection Vl.
SecUon Vll .
A S'rUDY OF THE OPERA'l'IOH OF SELECTION J?QI{
PRODUCTION IN A NEW ZEALAND DAIRY HERD.
Contents. Pur:e.
Intpoduction. l.
Source of Data · , Metllod.
A Brief History of the Herd. , 7.
Estaolisl-tment and Pounu::rtioil Stock; Herd Sir es; Br e edina Po licy;
I-I er cl Policy; F'c.wm Po licy; Il erd Numbers; Production Records.
He r d Replac ement St ock - Sou rce and 34.
Supply; Total Calvings and Total Births; Sex Hatios; Uultiple Bidhs;
Dead Births; Female CRJves.
Losses and Disposnls from the Milking 55.
Herd ; Disease; Low P r o auction; Aue ; Accident and Injury; Surplus;
Wastage in relation to Foundotion Stock Family Lines.
Production Recopds 76.
Discussion. too.
Conclusion.
265'9llfassey Renown Heterodyne V.H.C.
Bred & Owned
hlassey Agricultural College.
Born 6th July, 1930.
Natural Photograph 30th Nov� 1940.
Production Records.
Age Calving Date Ui lk 1b s. Test (t Fat/bs. Days.
2 yrs. 5'0 days 2�/8/32 9,117 4.2 397 339
3 lt 74 11 1 /9�3 16,098 4.4 '709 466
4 5' 11 " 3341 47 11 11 1l
�
/6 /6?j
3 6 5' 14,610 15' 45'0 4.2 {�. 1 6oo 660 343 J.l.8t
" 11 312 65' 11 " 10/9�7 14/5. 39 21,43 18,420 5' 4.4 4.02 934 740 348 5307555 T o tar a H e tharland R en own .
B o rn lOth F e bruary 1928.
Breeder: Piri Land C o . , Auckland.
Owner: Hass ey Agr i cultur al C o l l eg e , Palmerston Ho r tll.
Ha tur al Pho t o graph }Oth N ov e mber , 1940.
