Penggunaan Formula Mineral Lokal dalam Ransum Ayam Petelur
Abstract: A mineral formula
composed of three locally available materials: limestone originated from Bukit
Kamang of West Sumatra, freshwater oyster shell and bone meal and fortified
with micro minerals of Cu, Zn and I was investigated as mineral supplement for
diet of laying hens. The experimental diets were: P0 (diet contained of 6%
commercial mineral), P1 (diet contained of 6% local mineral), P2 (diet
contained of 6% Bukit Kamangs' limestone) and P3 (diet contained of 6% fresh
water oyster shell meal). The total of four experimental diets was then fed to
120 laying hens. The hens were divided into 3 groups based on body weight:
heavy, medium and light. Each group was subdivided into 4 subgroups in
accordance with number of treatments, so that each treatment consisted of 3
replicates containing of 10 hens. Parameters measured included: feed intake,
hen-day egg production, feed conversion ratio (FCR), eggshell quality, mineral
retention and mineral composition of tibia bone. Data were subjected to
statistical analysis using variance analysis in a completely block design with
4 treatments and 3 blocks as replicates The results showed that the egg weight
and eggshell qualities were found not significantly difference, but different mineral
sources gave significant effect on egg production and bone mineralization. The
laying performances and tibia bone weight of chickens fed diet mixed with the
local mineral formula were found not significantly different with those fed
diet mixed with commercial formula, but significantly better (P < 0.05) than
those of fed diet mixed with only limestone or oyster shell. Hens fed with diet
mixed with Bukit Kamangs' limestone showed better performances and heavier
tibia bone than those fed with diet mixed with oyster shell. It was concluded
that the local mineral formula could be used as sole mineral source for laying
hens. The nutritive value of Bukit Kamangs' limestone was better than that of
fresh water oyster shell.
Penulis: Khalil
Kode Jurnal: jppeternakandd100171
