PENGARUH SUPLEMENTASI RAGI LAUT TERHADAP PENAMPILAN AYAM PETELUR
Abstract
ABSTRAK
Satu penelitian telah dilakukan untuk mengetahui pengaruh suplementasi ragi
laut sebagai pakan imbuhan terhadap kinerja ayam petelur dengan menggunakan 120
ekor ayam umur 22 minggu yang dibagi dalam tiga perlakuan pakan: I kontrol dengan
imbuhan zinc-bacitracine, II ragi laut (1 kg/ton pakan) dan III probiotik komersil (1
kg/ton pakan), dengan 4 ulangan (10 ekor/ulangan). Ayam ditempatkan dalam
kandang batere individu, dengan satu tempat pakan untuk setiap ulangan. Pakan dan
air minum diberikan secara bebas selama 16 minggu masa percobaan.
Perlakuan tidak mempunyai pengaruh yang nyata terhadap konsumsi pakan,
namun mempunyai pengaruh yang nyata terhadap % produksi telur harian (%HD),
total produksi masa telur, nilai rasio konversi pakan (FCR) masing masing 77,83 
6,24%; 88,35 1,21%; 89,58 1,14%; 4, 85 0,45 kg/ekor; 5,59 0,03 kg/ekor; 5,65
0,52 kg/ekor; 2,86 0,26; 2,44 0,17; 2,43 0,14 untuk perlakuan I,II dan III.
Berat telur dan tebal kerabangnya tidak dipengaruhi oleh perlakuan, namun
kandungan kolesterol dari kuning telur dipengaruhi secara nyata, masing-masing 4,58 
0,56 mg/100 g, 4,13 0,81 mg/100gram; 3,41 0,34 mg/100 gram untuk perlakuan I,
II dan III.
Aktivitas enzim lipase dalam usus tidak dipengaruhi oleh perlakuan, namun
mempunyai pengaruh yang nyata terhadap enzim amilase dan protease masing masing
58,9; 79,1; 69,5 unit/ml; 1,82; 1,95; 5,28 unit/ml, untuk perlakuan I,II dan III.
Panjang dan jumlah vili secara nyata dipengaruhi oleh perlakuan masing
masing 57,05 7,06 ïm; 62,78 4,69 ïm dan 78,13  11,85 ïm; 12,00 2,16 / 10
cm2; 14,25 1,71 / 10 cm2 ; 16,25 0,96 / 10cm2 untuk perlakuan I, II dan III.
Dari penelian ini disimpulkan bahwa ragi laut dapat digunakan sebagai pakan
imbuhan menggantikan zinc bacitracin, bahkan memberi penampilan yang lebih baik
yang kemungkinan disebabkan oleh lebih tingginya aktivitas enzim pencernaan dalam
usus serta lebih panjang dan banyaknya jumlah vili.
Kata kunci: ragi laut, ayam petelur
ABSTRACT
An experiment has been conducted to study the effect of marine yeast as feed
supplement, using 120, 22 weeks old layers, divided into three treatment : I control
with zinc bacitracine, II marine yeast and III commercial probiotic, with 4 replicates
(10 birds/replicate). The birds were placed in a single battery, with one feeder for each
replication. Feed and drinking water were given ad-libitum during the 16 weeks trial.
The treatment had no significant effect on feed consumption, but significantly
affected % henday (HD) production, total egg-mass production and FCR, which were
77.83 6.24%, 88.35 1.21%, 89.58 1.14%; 4. 85 0,45 kg/head; 5.59 0.03
kg/head; 5,65 0.52 kg/head ;2.86 0.26; 2.44 0.17; 2.43 0.14. for treatment I, II,
and III, respectively.
Egg weight and shell thickness were not affected by treatment, however, the
cholesterol content of the yolk was significantly affected, 4.58 0.56mg/100g, 4.13 
0.81 mg/100gram and 3.41  0.34 mg/100 gram for treatment I, II, and III
respectively.
Lipase enzyme activity in the gut was not affected by the treatment,how ever,
there were a significant effect on amylase and protease enzyme activities 58.9; 79.1 ;
69.5 unit/ml; 1.82; 1,95; 5.28 unit/ml, for treatment I, II, and III, respectively.
The length and number of villi were significantly affected by the treatments,
57,05 7,06 ïm; 62,78 4,69 ïm and 78,13 11,85 ïm; 12,00 2,16 /10 cm2 ; 14.25
1.71 /10cm2 and 16.25 0.96 /10cm2 for treatment I, II, and III, respectively.
From the trial, its concluded that marine yeast could be used as feed
supplement, replacing zinc bacitracine, even with better performance which might due
to higher digestive enzymes activities as well as better length and number of villi.
Key words: marine yeast, layer chicken
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