An experiment was carried out at Cho Moi district, Long Xuyen city, An Giang province to evaluate the reproductivity of five breeding groups of local doe mated by bucks (New Zealand, California and local). Thirty female rabbits (12 New Zealand and 18 local rabbits) was designed in a completely randomized design with 5 treatments (numbered from 1 to 5) (5 rabbit breedings), 6 replications and one female rabbit per experimental unit. The experiment also evaluated the average daily gain of leverets, fifteen male rabbit flocks at 5 weeks old, were allocated in a completely randomized design with 5 treatments (numbered from 6 to 10) (5 rabbit breedings), 3 replications and one male rabbit flock per experimental unit (individually housed rabbit). The experimental rabbits in all treatments were given a commercial concentrate, and local grasses such as para grass (Brachiaria mutica), water spinach (Ipomoea aquatica), sweet potato (Ipomoea batatas). The animals were fed ad libitum. The results indicated that when the ambient temperature ranging from 23 to 30.5 degrees C (with the humidity ranging from 74 to 84.3 percent), there were no differences on reproductive performance among five female rabbit breeding types and the growth up of their leverets with the exception of weight at birth. However, the intake of concentrate of pure New Zealand (NZ x NZ) and crossbreds (NZ x indigenous) was higher than that of other treatments. Consequently, total feed intake and feed conversion ratio of animals among treatments were statistically different. Otherwise, the body weight gain of rabbit at 4-week old and finishing period was not different significantly. Also the results proved that different crossbreeding types have affected on feed intake and feed conversion ratio of the rabbits.
Lọc theo danh mục
Lượt truy cập :
30,349,171
Xem toàn văn