Abstract
Excellent performance of bull as sperm producer was needed to maintain and increase the high pregnancy cows rate.The study aimed to determine the effect of mineral-vitamin combining [MVC] and herbs supplementing [HS]on feed intake, feed efficiency, average daily gain[ADG], linear body, semen quality and B/C ratio of OngoleCrossbred bull. Eight animals [aged 3 to 5 years] within initial weight 505.2 ± 70.5 kg were examined. They were grouped in two feed regimes, firstly, the basal diet was given with the inclusion of Vitamin A, E and Zinc-minerals [P1] and secondly, were basal diet plus herbs supplementation [P2]. The basal diet consisted of elephant grass, gliricidia, and commercial concentrates. Feeding was assigned to dry matter[DM] of 3% of body weight [BW] to meet the balance nutrient intake. The experimental which conducted as long as three months, was designed in two treatments and four replicates. Data analysed by using the T-test. There was no significant different between P1 and P2 in the results on feed intake, efficiency, ADG, and linear body. However, the sperm concentration of P1 [1,366.7 ± 768.9 million/ml] was higher[P<0.05] than those of P2 [873,3 ± 488.7 million/ml]. Meanwhile, the sperm viability of P1[90.4 ± 8.5%] was also higher than that of P2 [78.7 ± 16.2%]. Both P1 and P2 were recommended for being usedcommercially [due to requirement of Indonesia National Standard/SNI 4869-1:2017], but the P1 was the efficient one in regards of the B/C ratios.
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