scholarly journals Effect of bacterial protein meal grown on natural gas on growth performance and carcass traits of pigs

2004 ◽  
Vol 3 (4) ◽  
pp. 323-336 ◽  
Author(s):  
Margareth Øverland ◽  
Nils Petter Kjos ◽  
Anders Skrede
2003 ◽  
Vol 83 (2) ◽  
pp. 229-237 ◽  
Author(s):  
A. Skrede ◽  
H. Faaland Schøyen ◽  
B. Svihus ◽  
T. Storebakken

Bacterial protein meal (BPM) produced from natural gas by Methylococcus capsulatus (Bath), Alcaligenes acidovorans, Bacillus brevis and Bacillus firmus was studied as a protein source for broiler chickens. Three experiments from day-old to slaughter at 35 d were carried out. In exp. 1, BPM was fed at 0, 20, 40, 60, 80 and 100 g kg-1 diet (as fed) replacing soybean meal protein. Levels of BPM up to 60 g kg-1 had no effect on 0-5 wk gain, while the 80 and 100 g kg-1 levels significantly reduced gain, especially in the 0–2 wk period. In exp. 2, chickens were fed diets containing 0, 30, 60 and 90 g kg-1 BPM and two protein levels, 23 and 21 g kg-1. The highest level of BPM significantly reduced growth, independent of protein level, whereas growth responses to lower levels of BPM were similar to the control diet. In exp. 3, 90 g kg-1 BPM in diets containing 23 g kg-1 protein had no negative effect on growth, but significantly reduced the abdominal fat pad. Overall, substitution of soybean meal protein with increasing levels of BPM significantly lowered feed-to-gain ratio during the last part of the feeding period. Sensory analysis of thigh meat after 2 mo of frozen storage (exp. 1) showed that meat from 35-d-old chickens fed 60 and 100 g kg-1 BPM had less odor intensity and less rancid flavor than meat from control animals fed no BPM. Other sensory attributes were not affected by treatment. Key words: Bacterial protein meal, chicken, growth performance, feed:gain ratio, feed conversion, sensory quality


2005 ◽  
Vol 59 (5) ◽  
pp. 335-352 ◽  
Author(s):  
Anne Louise F. Hellwing ◽  
Anne-Helene Tauson ◽  
Øystein Ahlstrøm ◽  
Anders Skrede

Aquaculture ◽  
2005 ◽  
Vol 248 (1-4) ◽  
pp. 27-33 ◽  
Author(s):  
Hilde Faaland Schøyen ◽  
Janna Randi Kringeland Frøyland ◽  
Stefan Sahlström ◽  
Svein Halvor Knutsen ◽  
Anders Skrede

2007 ◽  
Vol 87 (1) ◽  
pp. 93-102 ◽  
Author(s):  
Hilde Faaland Schøyen ◽  
Kirsti Rouvinen-Watt ◽  
Erik Höglund ◽  
K. Peter Stone ◽  
Anders Skrede

The suitability of bacterial protein meal as a feed ingredient in silver fox diets was examined in an experiment comprising 72 juvenile silver foxes. Bacterial protein meal has a high content of tryptophan, which is the precursor for the neurotransmitter serotonin. The biological hypothesis on which this study was premised was that increased brain serotonin production reduces the fear response, which may lead to better welfare and performance through lower energy expenditure related to fear-induced defensive responses. The effect of substituting 15% fish meal with bacterial protein meal was measured by two behavioural tests, growth performance and fur quality, by comparison with a control diet and a diet supplemented with a high level of synthetic tryptophan. The welfare of the foxes fed the diet supplemented with synthetic tryptophan was considered to be improved, as they used shorter time to approach feed in the presence of a person; thus displayed less fear, than the other two groups after treatment. Weight gain of the foxes during 55 d did not differ among diets, and feed consumption was similar. Live grading of the foxes showed that the dietary treatments did not affect fur quality (P > 0.05). It is concluded that 15% bacterial protein meal can replace fish meal in dry silver fox diets and that a large supplement of tryptophan reduces fear of silver foxes kept in cages. Key words: Bacterial protein meal, tryptophan, serotonin, silver fox, welfare, performance


2006 ◽  
Vol 129 (3-4) ◽  
pp. 237-251 ◽  
Author(s):  
Margareth Øverland ◽  
Odd Helge Romarheim ◽  
Mariann Hovin ◽  
Trond Storebakken ◽  
Anders Skrede

2007 ◽  
Vol 61 (4) ◽  
pp. 276-291 ◽  
Author(s):  
Hilde F. Schøyen ◽  
Birger Svihus ◽  
Trond Storebakken ◽  
Anders Skrede

2014 ◽  
Vol 3 (1) ◽  
pp. 150-157
Author(s):  
Khalid M. Gaafar

The research was conducted to study the effect of feeding broiler chickens on diets containing isomaltooligosaccharides on the growth performance, carcass traits and immune response. 90-one day old broiler chicks were used according to completely randomized two treatment groups and one control, 30 birds each. Birds fed ad-libitum on basal starter and grower-finisher diets for 35 day. Diets of treatment`s groups contained 0.5 g/Kg and 1 g/Kg of Isomaltooligosaccharides, while the control group fed on the basal diets without Isomaltooligosaccharides supplementation. Dietary supplementation of broiler chickens with Isomaltooligosaccharides improved body weight, feed conversion, carcass traits, two lymphoid organs weight and log antibody titer against avian flu vaccine. Most of the highest values were for birds fed low levels of Isomaltooligosaccharides. Feed intake decreases as Isomaltooligosaccharides level increases. Dietary supplementation with Isomaltooligosaccharides did not affect the lipids profile (triglycerides, total cholesterol, LDL and HDL), however the blood VLDL levels decreased with increased levels of Malondialdehyde and Glutathione reductase. Collectively, Dietary supplementation of broiler chickens with 0.5 g/Kg diet of Isomaltooligosaccharides improved growth performance, carcass traits and immune status.


Sign in / Sign up

Export Citation Format

Share Document