Reproductive performance of Bali cattle fol1owing artificial insemination in Bali

Link Symposium for Improved Animal in Southeast Asia"

Reproductive performance of Bali cattle

insemination

in

Bali

K.

I P

B.

and B.

'Faculty of Veterinary Livestock Faculty

(E-mail:

Abstract

Bali cattle, domesticated of Banteng is one of the beef breeds in Indo- nesia. Reproductive performance data of Bali cattle from 5 176 services and 2940 cows were col- lected from Jan to Sep 2003 during an program in Bali. Non-return rate service per conception and rate (58.3) were comparable with other reports, both on Bali

and other breeds. However, calving interval (41 and days open d) were

longer than other breeds. In addition, there was a difference in conception rate between and bull and number of per month

related

to production site centre).

Bali cattle originate from the wild Banteng syn.

and are well utilized in traditional farming on the island of Bali (Darmadja, 1980). As one of indigenous and important beef cattle breeds in Indonesia, Bali cattle contribute to the devel-

opment of livestock and agriculture. The breed is predominant especially in eastern Indonesia NTB, (West and Sulawesi) and Lampung (Talib 2003). The

have a high heat tolerance, are well adapted to the dry-land, efficiently utilize low feed, and is considered to have a high fertility in a harsh environment However, Bali cattle have a

small birth and weaning high calf mortality slow growth rate low milk production (Oka, and are susceptible to infectious diseases, Jemhrana disease (Soeharsono el

Although some reproductive of Bali cattle have been reported previously (Pane

1992, 2003, 2004). on reproductive

artificial insemination

are

limited. was first introduced in cattle in south-

and from 1976 2003). Bali, as source pure Bali cat- tle, has been performed since 1980s with frozen semen produced by the National Centre of

East

Java. Since frozen semen

also

has been produced the local Centre of Bali province. The frozen semen was distributed throughout and also out of Bali. This report de- scribes the reproductive performance of Bali cattle following on the island of Bali using fro- zen semen, produced

by

the Singosari centre and a Local centre. In addition, the effect of month, year, and bull on some was examined.

Material and Methods