3. Results and discussion3.1. NWAC

3. Results and discussion
3.1. NWAC production, processing yield, and fillet composition
Production characteristics were not analyzed separately because
the two sizes of fish were not clearly separated. However, there
were no differences in the total amount of feed fed, overall gross
and net yield, mean fish weight at harvest, FCR, and survival among
dietary treatments (Table 2). This generally agrees with Robinson et
al. (2001), who reported no significant differences in production
characteristics in channel catfish fed 32% protein diets containing 0,
25, or 50% CGF. It should be noted that the control diet used in that
study contained 3% bovine meat and bone/blood meal, which was
slightly different from the control diet used in the present study.
The diets containing 25 or 50% CGF in Robinson et al. (2001) also
had 1.5% bovine meat and bone/blood meal. Hybrid catfish fed the
same diets as in the present study also had no differences in production
characteristics (Hu et al., in revision; Li et al., 2012) compared to
fish fed 28% protein all-plant diets with no CGF or 30% CGF.
No differences were observed in processed yield and fillet proximate
composition among fish fed various diets (Table 3). There was
an interaction between diet type and protein level on weight of fish
selected for processing (Table 3). The reason for the interaction is
not clear, but could be an artifact because there was no interaction
in final fish weight between diet type and protein level. Fish used
for processed yield were selected (not randomly sampled) to fit the
range of fish sizes that were suitable for processing. Studies with hybrid
catfish also showed no significant differences in processed yield
and fillet proximate composition when fed diets with or without
CGF (Hu et al., 2012; Li et al., 2012).
3.2. UAPB production, processing yield, and fillet composition
There were no differences in the total yield, survival, total
amounts of feed fed, feed conversion, or mean weight at harvest of
the larger, carryover fish (Table 4). The principal effect of the different
diets was that the yield of fingerlings fed diets with 32% protein was
higher than that of fingerlings fed diets with 28% protein (Table 4).
Younger fish have higher dietary protein requirements than older
fish due to the faster growth rate of young fish (NRC, 2011). The effect
was not observed in the carryover fish, as yield was similar among
diets.
There was an overall trend toward lower processing yields for fish
fed alternative diets with CGF (Table 5). However, only visceral fat
was significantly lower in catfish fed the alternative diets (Table 5).
Reduced body fat has been observed previously in catfish fed diets

ผลลัพธ์ (แอฟริกา) 1:

3. Resultate en bespreking
3.1. NWAC produksie, verwerking opbrengs, en fillet samestelling
Produksie eienskappe is nie afsonderlik ontleed omdat
die twee groottes van die vis is nie duidelik geskei. Maar daar
was geen verskille in die totale bedrag van voer gevoed, algehele bruto
en netto opbrengs, beteken vis gewig by die oes, VOV en oorlewing onder
dieet behandelings (Tabel 2). Dit stem ooreen met die algemeen Robinson et
al. (2001), wat geen betekenisvolle verskille in die produksie berig
eienskappe in kanaal baber gevoed 32% proteïen dieet bevat 0,
25, of 50% CGF. Dit sal opgemerk word dat die beheer dieet gebruik word in daardie
studie vervat 3% bees vleis en been / bloed eet, wat
effens verskil van die beheer dieet wat in die huidige studie.
Die dieet met 25 of 50% CGF in Robinson et al. (2001) het ook
moes 1,5% bees vleis en been / bloed maaltyd. Hybrid baber gevoed die
dieselfde dieet as in die huidige studie het ook geen verskille in die produksie
eienskappe (Hu et al, in hersiening;.. Li et al, 2012) in vergelyking met
vis gevoed 28% proteïen all-plant dieet met geen CGF of 30 % CGF.
Geen verskille is waargeneem in verwerkte opbrengs en ​​fillet onmiddellike
samestelling onder visse gevoed verskeie dieet (Tabel 3). Daar was
'n interaksie tussen tipe dieet en proteïen vlak oor die gewig van die vis
wat gekies is vir die verwerking van (Tabel 3). Die rede vir die interaksie is
nie duidelik nie, maar 'n juweel kan wees, want daar was geen interaksie
in die finale vis gewig tussen tipe dieet en proteïen vlak. Fish gebruik
vir verwerkte opbrengs gekies is (nie lukraak gemonsterde) om die pas
reeks vis groottes wat geskik is vir die verwerking van was. Studies met hibriede
baber het ook geen beduidende verskille in verwerkte opbrengs
en ​​fillet onmiddellike samestelling wanneer gevoed dieet met of sonder
CGF (Hu et al, 2012;. Li et al, 2012)..
3.2. UAPB produksie, verwerking opbrengs, en fillet samestelling
Daar was geen verskille in die totale opbrengs, oorlewing, totale
bedrae van voer gevoer, voeromset, of gemiddelde gewig by die oes van
die groter, oordrag vis (Tabel 4). Die skoolhoof effek van die verskillende
dieet was dat die opbrengs van vingerlinge gevoed diëte met 32% proteïen was
hoër as dié van vingerlinge gevoed diëte met 28% proteïen (Tabel 4).
Younger vis hoër dieet proteïen vereistes as ouer
vis te danke aan die vinniger groeikoers van jong vis (NRC, 2011). Die effek
was nie waargeneem in die oordrag vis, as opbrengs was soortgelyk onder
dieet.
Daar was 'n algehele neiging tot laer opbrengste verwerking vir visse
gevoed alternatiewe diëte met CGF (Tabel 5). Daar is egter slegs viserale vet
was aansienlik laer in baber gevoer alternatiewe dieet (Tabel 5).
Verlaagde liggaamsvet voorheen waargeneem in baber gevoed dieet