Utilization of dried microbial cells grown on methanol in a semi-purified diet for growing pigs

D’Mello, J. P. F.; Peers, David G.; Whittemore, C. T.

doi:10.1079/bjn19760095

Cited by 44 publications

(11 citation statements)

References 6 publications

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“…This accords with the findings of Berdanier et al (1967). The present urinary total N excretion of pigs given the proteinfree diet agrees closely with published estimates (Lubaszewska et al 1973;D'Mello et al 1976;Fuller & Crofts 1977) whereas the protein-free urea N excretion is double that given by D' Mello et al (1976).…”

Section: Discussionsupporting

confidence: 95%

Endogenous urinary metabolite excretion in the growing pig

Moughan

Smith

Kies

1987

New Zealand Journal of Agricultural Research

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Endogenous urinary total nitrogen (N) and urea N excretions in the growing pig were measured using either the protein-free or regression method. Eighteen entire male pigs (28 kg liveweight) were randomly and equally allocated between six levels of feeding of a barley diet. Mean daily urinary total N and urea N excretions were determined. The regression of urinary metabolite output on dietary N intake extrapolated to zero N intake gave endogenous urinary total N and urea N excretions of 144.6 and 51.5 mg/kgo. 75 per day, respectively. Corresponding values for six of the pigs subsequently given a protein-free diet for 11 days, with endogenous excretions calculated over the final six days, were 163.3 and 62.2 mg/kgo. 75 per day. The urinary creatinine excretion of the barley-fed pigs was not related to dietary N intake. Mean daily urinary creatinine excretion was 53.1 ± 3.3 mg/kgo. 75 whereas that for pigs given the protein-free diet was 61.2 ± 2.0 mg/kgo. 75 • Although endogenous urinary metabolite losses tended to be higher for pigs on the protein-free feeding regime, endogenous urea N and creatinine N were close to 0.40 and 0.14 of endogenous total N respectively for pigs fed either the protein-free or barley diet.

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Section: Discussionsupporting

confidence: 95%

Endogenous urinary metabolite excretion in the growing pig

Moughan

Smith

Kies

1987

New Zealand Journal of Agricultural Research

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“…It is obvious that the higher intake of the amino acids including that of lysine in the L-lysine sulfate dietary group was due to the presence of the additional amino acids retained in the bacterial cell mass. The present findings were in agreement with an earlier report [9] which indicated that dried microbial cells had amino acid composition comparable to fish meal and its digestibility as a whole and that of its amino acids in particular was rather better than that of fish meal in case of pigs.…”

Section: Discussionsupporting

confidence: 94%

Assessment of the Efficacy of L-Lysine Sulfate vis-à-vis L-Lysine Hydrochloride as Sources of Supplemental Lysine in Broiler Chickens

Bahadur

Haldar

Ghosh

2010

Veterinary Medicine International

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In this study the effects of L-lysine hydrochloride (containing 78.8% available lysine as crystalline lysine) and L-lysine sulfate (containing 51% available lysine in bacterial cell mass) as source of supplemental lysine in broiler chickens was assessed. The basal diet was supplemented with either L-lysine hydrochloride or L-lysine sulfate to meet lysine requirement. Lysine supplementation irrespective of source improved (P < .05) live weight and food conversion. Live weight and food conversion ratio of the L-lysine sulfate group was superior (P < .05) to the L-lysine hydrochloride group. Supplementation of lysine to the basal diet improved breast meat yield (P < .05). Meat protein content and protein accretion increased (P < .01) when L-lysine sulfate was supplemented. Nutrient metabolizability, N retention, protein utilization efficiency and live weight gain : lysine intake ratio also improved (P < .01) with L-lysine sulfate. A fasting trial conducted after the completion of the feeding trial indicated that the birds receiving L-lysine sulfate retained more of their live weight than the control and the L-lysine hydrochloride dietary groups (P < .05). It was concluded that due to the retained bacterial cell mass, L-lysine sulfate may be a superior source of supplemental lysine than L-lysine hydrochloride for broiler chickens.

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“…In both species, allantoin made up more than 90% of the excreted purine base derivatives, and the influence of the other derivatives on the total excretion was negligible. Increased excretion of allantoin has also been observed in pigs fed yeast RNA or other types of bacterial protein (D'Mello et al 1976;Braude et al 1977;Roth & Kirchgessner 1977a, 1977bGreife et al 1984). The observed species differences in terms of total excretion and the ratio between the different purine base derivatives suggested that the minks examined in this experiment decomposed the purine bases to their end-product allantoin more completely than the pigs did.…”

Section: Nucleic Acid and Creatinine Metabolismmentioning

confidence: 50%

Bacterial protein meal in diets for pigs and minks: Comparative studies on protein turnover rate and urinary excretion of purine base derivatives

Hellwing

Tauson

Skrede

et al. 2007

Archives of Animal Nutrition

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The effect of increasing the dietary content of bacterial protein meal (BPM) on protein turnover rate, and on nucleic acid and creatinine metabolism in growing minks and pigs was investigated in two experiments. In each experiment, 16 animals were allocated to four experimental diets. The diets containing no BPM served as controls, i.e. for minks diet M1, for pigs P1; the experimental diets contained increasing levels of BPM to replace fish meal (minks) or soybean meal (pigs), so that up to 17% (P2), 20% (M2), 35% (P3), 40% (M3), 52% (P4), and 60% (M4) of digestible N was BPM derived. Protein turnover rate was measured by means of the end-product method using [15N]glycine as tracer and urinary nitrogen as end-product. In minks, protein flux, synthesis, and breakdown increased significantly with increasing dietary BPM. In pigs, diet had no observed effect on protein turnover rate. The intake of nucleic acid nitrogen (NAN) increased from 0.15 g/kg W0.75 on M1 to 0.26 g/kg W0.75 on M3 and M4 in the mink experiment, and from 0.08 g/kg W0.75 on P1 to 0.33 g/kg W0.75 on P4 in the pig experiment. Increased NAN intake led, in both experiments, to increased allantoin excretion. Analysis of species effects showed that minks excreted 1.72 mmol/ kg W0.75 of allantoin, significantly more than the 0.95 mmol/kg W0.75 excreted by pigs. In minks, approximately 96% of the excreted purine base derivatives consisted of allantoin, whereas in pigs approximately 93% did. Thus, increasing the dietary content of BPM increased protein turnover rate in minks but not in pigs, and allantoin excretion increased with increasing dietary BPM although it seemed that mink decomposed purine bases to their end-product more completely than pigs did. Collectively these data show that BPM is a suitable protein source for pigs and mink, and recorded differences between species were to a large extent due to differences in protein retention capacity and muscle mass.

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Utilization of dried microbial cells grown on methanol in a semi-purified diet for growing pigs

Cited by 44 publications

References 6 publications

Endogenous urinary metabolite excretion in the growing pig

Endogenous urinary metabolite excretion in the growing pig

Assessment of the Efficacy of L-Lysine Sulfate vis-à-vis L-Lysine Hydrochloride as Sources of Supplemental Lysine in Broiler Chickens

Bacterial protein meal in diets for pigs and minks: Comparative studies on protein turnover rate and urinary excretion of purine base derivatives

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