Table 1. FCR (g feed/g gain) of broilers fed on diets containing different levels of FSSM
Diet 7
Control 1.99±0.51a 10% 20% 30%
1.37±0.25a 1.65±0.12a 1.86±0.13a
Experimental time (days) 14
21
2.49±0.46b 1.93±0.08a 1.91±0.12a 1.88±0.19a
1.94±0.21a 1.90±0.19a 1.68±0.04a 1.77±0.10a
28
2.33±0.22a 2.09±0.04a 2.04±0.12a 2.29±0.15a
a-b Different letters in a column indicate significant differences among treatments (P<0.05).
2. Pigs In a study by Batterham (1983), wheat-based diets were formulated in which fish silage partially or completely replaced soybean meal as the protein supplement. The addition of fish silage improved growth rate and feed conversion ratio during the 20 to 45 kg growth phase. Over the 20 to 80 kg growth phase, the beneficial effects of fish silage on growth rate and feed conversion were maintained (Table 2).
Table 2. Response of pigs to diets containing either soybean meal (SBM), soybean meal + fish silage, and fish silage
Parameter SBM
20 to 45 kg growth phase: Gain (g/day)
Carcass gain (g/day) FCR
535 412 2.24
20 to 80 kg growth phase: Gain (g/day)
Carcass gain (g/day) FCR
597 492 2.56
Diets SBM + Silage
546 448 2.26
603 500 2.50
Silage
569 456 2.10
639 531 2.35
3. Quails In the study of Ramirez et al (2013), the inclusion of fish silage in quail diets neither adversely affected the productive parameters, nor the
CONCLUDING REMARKS
In broilers, improvements in performance parameters is not affected by age of the birds, however, in quails the benefits of adding fish silage decreases with age. Both age groups of pigs (20 – 45 kg and 20 – 80 kg) had increased growth rates in fish silage diets compared to soybean diets.
Replacing fishmeal with fish silage (at 250 g/kg feed) results in better specific growth rate and improved feed conversion ratio. Although differences in response between animal species differ, fish silage is a potential protein source in most animal species. Diet inclusion rates are important in determining the value of fish silage in animals.
sensory quality of the meat, nor carcass yield. The feed conversion was better with the inclusion of fish silage (Table 3). However, it can be seen that the feed conversion ratio increases with age.
Table 3. FCR (g feed/g gain) of quails fed with diets containing different levels of fish silage:soybean mixture
Diet 7
1 2 3 4
14
Time (days) 21
28
35
3.10±0.24 2.92±0.22 3.67±0.31 4.63±0.38 5.76±0.50 2.62±0.26 2.65±0.17 3.38±0.37 4.37±0.32 5.48±0.45 3.16±0.19 2.72±0.20 3.62±0.41 4.23±0.47 5.24±0.55 2.85±0.44 2.89±0.36 3.55±0.31 4.11±0.28 4.99±0.51
Diet= (1 = control = 0%, 2 = 10%, 3 = 20%, and 4 = 30%) of fish silage:soybean mixture, respectively.
4. Fish Replacing fishmeal with fish silage (at 250 g/kg feed) incorporated with rice bran in diets for fingerling red tilapia resulted in better specific growth rate and improved feed conversion ratio (Madage et al., 2015). However, concentrations of 500 g/kg and 750 g/kg did not bring additional benefits.
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178x61_v4.indd 1 12-04-16 10:11 FEED COMPOUNDER SEPTEMBER/OCTOBER 2018 PAGE 17
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