14Results
Table 1. Calving results for 2012-13 and pregnancy diagnosis (Aug 2013) for next season’s calves
Breeder group
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Calving rate (%):
2012-13 calves born/cows mated
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Pregnancy rate (%):
cows preg. Aug 2013 / cows mated Jan 2013
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Pregnancy rate(%) in wet cows: preg. wet cows / total wet cows
|
F1 cows
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54.5 (n=22)
|
72.0 (n=25)
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69.2 (n=13)
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3/4 cows
|
72.5 (n=40)
|
95.0 (n=40)
|
93.1 (n=29)
|
7/8 cows
|
61.1 (n=36)
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63.2 (n=45)
|
77.8 (n=24)
|
15/16 cows
|
50.0 (n=14)
|
68.8 (n=32)
|
71.4 (n=21)
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Two-year-old x-bred heifers (continuous mating)
|
87.9 (n=33)
|
75.0 (n=20)
|
80.0 (n=5)
|
X-bred yearling heifers(continuous mating)
|
n/a
|
38.5 (n=26) mating still continuing
|
n/a
|
Two-year-old purebred heifers(continuous mating)
|
14 / 22 = 63.6%
|
100 (n=27)
|
55.6 (n=9)
|
Purebred yearling heifers (continuous mating)
|
n/a
|
69.2 (n=26)
|
|
Riverine cows
|
49.1 (n=53)
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Jul ’12: 40.5 (n=37)
Sep ’12: 46.9 (n=32)
Apr ‘13: 25.9 (n=27)
|
56.5 (n=23)
30.7 (n=13)
33.3 (n=12)
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Total
|
63.1% (n=220)
|
71.4 (n=241) excluding AI groups
|
74.3 (n=101) excluding AI groups
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Pregnancy rates were higher this year compared with last year. The wet cow pregnancy rate was 24.5% higher than last year. The ¾ riverine cows achieved a 95% pregnancy rate and wet cows achieved a 93% pregnancy rate. Yearling pregnancy rates were also higher this year.
Crossbred calf losses to weaning reached 6% which are similar to those in cattle.
The 100-animal purebred breeder target will be achieved in 2014 as 90 are now available and many 2013 calves will join them next year.
Imported Italian sexed semen trials have indicated that similar conception rates occur as with normal imported buffalo semen. However, semen from a one-sexed sire produced three bull calves out of seven, whilst the other produced only four female calves in all.
Some steers and bulls were sold, mainly to Brunei. There is interest from Vietnam. Southern Australian and Indonesian demand is increasing.
The local Darwin buffalo dairy is expanding and will demonstrate the feasibility of running dairy buffalo in any location in South-East Asia and other tropical areas given certain input requirements and will lay the foundation for future exports of breeders from the NT.
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