Egg Production and Hatching Performance of Alope and Kalosi Chickens Treated with Varying Frequencies of Bromocriptine as Antiprolactin
Subject Areas :M.M. Ahmad Ruhani 1 , W. Pakiding 2 , H. Hasbi 3 , M.I. Andi Dagong 4
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Keywords: Alope, Kalosi, bromocriptine, egg production, prolactin,
Abstract :
The development of Alope and Kalosi chickens is limited by low egg production caused by the appearance of brooding, which is controlled by an increase in prolactin concentration. The objective of the study was to determine the effect of the administration frequencies of bromocriptine as an anti-prolactin on egg produc-tion, reproductive performance, and concentration of the prolactin hormone as well as egg hatching per-formance of Alope and Kalosi chickens. One hundred and twenty Alope and Kalosi chickens consisting of 96 hens (48 each) and 24 cocks (12 each) aged 43 weeks were used in this study. Chickens were kept in flocks of litter floors with a sex ratio of 1:4. The treatment applied was no bromocriptine administration (control), 600 µg/head of bromocriptine administered orally every one, two, and four weeks with three rep-lications each. Eggs were collected daily followed by hatching. Observation of reproductive organs and blood sampling for prolactin observation were carried out at the end of the study. The results of the study show that the administration of bromocriptine with different frequencies has no significant differences in feed consumption, egg production, egg mass, hen day production, feed conversion ratio, hatchability, hatch-ing weight as well as ovary weight, oviduct weight, abdominal fat weight, and number of follicles. On the contrary, the administration of bromocriptine had significant differences in fertility and prolactin hormone concentration. It can be concluded that bromocriptine administration with different frequencies affects Alope and Kalosi chickens, especially in fertility and prolactin hormone concentration in the blood.
