@misc{eprints60626,
           title = {EFEKTIVITAS LIMBAH PETERNAKAN ISI RUMEN SAPI CAIR

DALAM KULTUR Thalasiossira sp},
          author = {1754111008 Muhammad Iqbal Ogara},
         address = {UNIVERSITAS LAMPUNG},
       publisher = {FAKULTAS PERTANIAN},
            year = {2021},
             url = {http://digilib.unila.ac.id/60626/},
        abstract = {Isi rumen sapi merupakan salah satu limbah yang berasal dari rumah potong he-
wan (RPH). Isi rumen sapi cair memiliki kandungan nitrogen 111,4 ppm dan kan-
dungan fosfor sebesar 401,79 ppm. Namun menghasilkan N/P ratio yang kecil se-
besar 0,25:1 Oleh karena itu, dalam penelitian ini cairan rumen sapi cair ditingkat-
kan N/P ratio menjadi 10:1 dengan penambahan NaNO3. Kandungan tersebut me-
miliki potensi yang tinggi untuk membuat rumen sapi cair sebagai pupuk alterna-
tif. Penelitian ini bertujuan mengkaji pemanfaatan isi rumen sapi cair sebagai

sumber nutrien dengan dosis yang berbeda dalam kultur Thalasiossira sp. Peneli-
tian ini dilaksanakan di CV. Krakatau Haura Baraka, Merak Belantung, Lampung

Selatan. Rancangan penelitian yang digunakan adalah rancangan acak lengkap
(RAL) dengan 5 perlakuan 3 ulangan, yaitu (A) 1 ml conwy /l air laut, (B) 1 ml isi

rumen sapi cair /l air laut, (C) 10 ml isi rumen sapi cair/l air laut, (D) 1 ml isi ru-
men sapi cair + 0,4 gr NaN03 /l air laut, dan (E) 10 ml isi rumen sapi cair + 0,4 gr

NaN03/l air laut. Parameter yang diamati kepadatan populasi Thalasiossira sp.
ukuran diatom, kadar protein dan kualitas air. Data kepadatan Thalasiossira sp.
diuji menggunakan (ANOVA) dengan tingkat kepercayaan 95\%. Menunjukan

berbeda nyata dan dilanjutkan dengan uji duncan dengan hasil perlakuan A (kon-
trol) merupakan perlakuan terbaik sedangkan keempat perlakuan isi rumen sapi

cair tidak berbeda nyata. Namun pada hari ke-3 kepadatan perlakuan D dan E ti-
dak berbeda nyata dengan perlakuan A (kontrol) Sehingga dapat dipanen pada

hari ke-3. Pengukuran kadar protein berkisar 9,9 ? 11,8\% dan diameter diatom se-
tiap perlakuan berkisar 5 - 10 {\ensuremath{\mu}}m. Pengukuran kualitas air media berada pada ki-
saran suhu 24-26 oC, Nilai pH 7 dan salinitas 32-34 ppt.

Kata kunci : isi rumen sapi cair, nutrien, Thalasiossira sp.The contents of the rumen of cows is one of the waste that comes from the slaugh-
terhouse.The contents of the rumen of cattle liquid nitrogen content 111,4 ppm

and the content of phosphorus by 401,79 ppm. However, generating the N/P ratio
is small at 0.25:1 therefore, in this study, rumen fluid of cattle liquid enhanced the
N/P ratio to 10:1 with the addition of NaNO3. The content has a high potential to
make beef rumen liquid as a fertilizer alternative. This study aims to assess the
utilization of the contents of the rumen liquid cattle as a source of nutrients with
different doses in the culture of the Thalasiossira sp. This study was conducted in

CV. Krakatau Haura Baraka, Merak Belantung, South Lampung. The research de-
sign used was complete randomized design (CRD) with 5 treatments with 3 repli-
cations, namely (A) 1 ml of conwy /l sea water, (B) 1 ml of rumen contents of

cows liquid /l sea water, (C) 10 ml of rumen contents of cows liquid/l sea water,
(D) 1 ml of rumen contents of cows liquid + 0.4 grams of NaN03 /l of sea water,
and (E) 10 ml of rumen contents of cows liquid + 0.4 grams of NaN03/l of sea
water. The parameters of the observed population density Thalasiossira sp. the
size of the diatoms, protein content and water quality. Data density Thalasiossira
sp. tested using (ANOVA) with a confidence level of 95\%. Shows the different
real and continued with Duncan test with the results of treatment A (control) is the
best treatment while the fourth treatment the contents of the rumen of cattle liquid
not significantly different. But on day 3 the density of the treatment D and E were

not significantly different with the Control treatment (A) So that it can be harves-
ted on day 3. Measurement of protein content ranges of 9.9 ? of 11.8\% and the

diameter of the diatom each treatment ranged from 5 - 10 {\ensuremath{\mu}}m. Water quality mea-
surements media are at a temperature range of 24-26 ? c, the Value of pH 7 and

salinity 32-34 ppt.
Keywords : rumen contents of cows liquid, density, Thalasiossira sp. }
}