scholarly journals Effects of the amount and quality of dietary protein on nitrogen metabolism and heat production in growing pigs

1987 ◽  
Vol 58 (2) ◽  
pp. 277-285 ◽  
Author(s):  
M. F. Fuller ◽  
A. Cadenhead ◽  
G. Mollison ◽  
B. Seve
Keyword(s):  
Heat Production ◽  
Dietary Protein ◽  
Protein Quality ◽  
Latin Square ◽  
Fat Deposition ◽  
Growing Pigs ◽  
Daily Rate ◽  
Additional Protein ◽  
Made In

1. Eight pigs with a mean weight of 48 kg were given, at a constant daily rate, diets of low (0.15) or high (0.30) protein content, very deficient in lysine, with or without a supplement of L-lysine (3.7 g/kg).2. Measurements of nitrogen and energy metabolism were made in four successive 14 d periods in a Latin-square design.3. The rate of protein accretion was substantially increased by increases in both protein and lysine supply, but the rate of heat production was not significantly changed.4. The rate of fat deposition varied inversely with the rate of protein accretion, being reduced by both protein and lysine supplements.5. The relation between heat production and protein accretion (allowing for a constant energy cost of fat deposition) suggested that heat production increased with additional protein accretion less when protein quality was improved than when more protein was given.

scholarly journals Effect of dietary protein quality on energy metabolism in growing chickens

1995 ◽  
Vol 74 (2) ◽  
pp. 163-172 ◽  
Author(s):  
R. Nieto ◽  
C. Prieto ◽  
I. Fernández-Fígares ◽  
J. F. Aguilera
Keyword(s):  
Dietary Protein ◽  
Crude Protein ◽  
Protein Quality ◽  
Fat Deposition ◽  
Metabolizable Energy ◽  
Energy Costs ◽  
Fast Growing ◽  
Soyabean Meal ◽  
Maintenance Requirements

A slaughter experiment was carried out to study the effect of dietary protein quality on maintenance energy requirements and energy costs for protein accretion and fat deposition in fast-growing broiler-type male chickens. Three isonitrogenous (200 g crude protein/kg DM) and isoenergetic (14 kJ metabolizable energy (ME)/g DM) semipurified diets based on soyabean meal unsupplemented (diet S) or supplemented with 20 g L-lysine/kg (diet SL) or 2 g DL-methionine/kg (diet SM), in order to promote a decrease or an increase in growth rate respectively, were selected and given at four feeding levels (ad lib. or restricted to 40, 28 and 18 g DM/d, on average) to 10-d-old fast-growing male broiler-type chicks for 2 weeks. Both the efficiency with which ME was used to support growth (kg) and the maintenance requirements (MEm) significantly decreased inversely to the biological value of the dietary protein (kg = 0·660, 0·600 and 0·572; MEm = 597, 522 and 464 k.J/kg W0·75 per d, for diets SI, S and SM respectively). The partial efficiencies of use of ME for protein accretion (kp) or fat deposition (kf) were also inversely related, the former increasing with the quality of the protein offered. An alternative procedure was used to try to overcome the statistical problems inherent in the partition of ME between fat and protein.

scholarly journals The effect of dietary protein on reproduction in the mare. VI. Serum progestagen concentrations during pregnancy

1998 ◽  
Vol 69 (4) ◽  
Author(s):  
F.E. Van Niekerk ◽  
C.H. Van Niekerk
Keyword(s):  
Dietary Protein ◽  
Protein Quality ◽  
Amino Acid Content ◽  
Protein Supplementation ◽  
The Other ◽  
Protein Diet ◽  
Sharp Decline ◽  
High Quality Protein ◽  
Essential Amino Acid Content

Sixty-four Thoroughbred and Anglo-Arab mares aged 6-12 years were used, of which 40 were non-lactating and 24 lactating. Foals from these 24 mares were weaned at the age of 6 months. Non-lactating and lactating mares were divided into 4 dietary groups each. The total daily protein intake and the protein quality (essential amino-acid content) differed in the 4 groups of non-lactating and 4 groups of lactating mares. The mares were covered and the effect of the quantity and quality of dietary protein on serum progestagen concentrations during pregnancy was studied. A sharp decline in serum progestagen concentrations was recorded in all dietary groups from Days 18 to 40 of pregnancy, with some individual mares reaching values of less than 4 ng/mℓ. Serum progestagen concentrations recorded in some of the non-lactating mares on the low-quality protein diet increased to higher values (p<0.05) than those of mares in the other 3 dietary groups at 35-140 days of pregnancy. A similar trend was observed for the lactating mares on a low-quality protein diet at 30-84 days of pregnancy. No such trends were observed in any of the other dietary groups. High-quality protein supplementation increased serum progestagen concentrations during the 1st 30 days of pregnancy. Lactation depressed serum progestagen concentrations until after the foals were weaned.

scholarly journals Protein quality in experimental diets and amino acid digestibility

2019 ◽  
Vol 97 (Supplement_2) ◽  
pp. 28-29
Author(s):  
Chan Sol Park ◽  
Olayiwola Adeola
Keyword(s):  
Amino Acid ◽  
Dietary Protein ◽  
Protein Quality ◽  
Sole Source ◽  
Growing Pigs ◽  
Ileal Digestibility ◽  
Distillers Dried Grains ◽  
Low Protein ◽  
Dietary Casein ◽  
Dietary Treatments

Abstract Digestibility of AA in feed ingredients for pigs has been generally determined by feeding semipurified diets containing test ingredients as a sole source of nitrogen. However, malnutrition caused by feeding semi-purified diets may affect the digestibility of AA. Therefore, the hypothesis of this study was that the standardized ileal digestibility (SID) of AA in distillers’ dried grains with solubles (DDGS) are not affected by the addition of casein in experimental diets. In Exp. 1, 20 growing pigs were allotted to dietary treatments including 2 diets containing either 480 g/kg DDGS or 308 g/kg DDGS and 60 g/kg casein. The SID of Lys and Phe for DDGS in the diet containing casein were greater (P < 0.05) than those without casein. Exp. 2 was conducted with 20 growing pigs assigned to dietary treatments containing 0, 55, 110, or 165 g/kg casein while the concentration of DDGS decreased at 466.8, 311.2, 155.6, or 0 g/kg. The SID of most indispensable AA in DDGS linearly (P < 0.05) decreased with increasing concentration of casein. Experiment 3 was conducted to verify that the results of Exp. 1 were affected by the addition of casein or by the concentration of DDGS or both. Twenty growing pigs were assigned to dietary treatments prepared as a 2 × 2 factorial arrangement with the concentration of DDGS at 466.8 or 155.6 g/kg and casein at 0 or 110 g/kg. The SID of most indispensable AA in DDGS at 466.8 g/kg were greater (P < 0.01) than in DDGS at 155.6 g/kg regardless of dietary casein. Overall, the addition of 60 g/kg casein to experimental diets may increase the SID of AA in low-protein quality ingredients but the addition of higher concentration of casein and low concentration of dietary protein from test ingredients may decrease the SID of AA.

Protein Quality of Four Peanut Cultivars Grown at Two Locations

1981 ◽  
Vol 8 (1) ◽  
pp. 61-65
Author(s):  
Josephine Miller ◽  
Timothy H. Sanders
Keyword(s):  
North Carolina ◽  
Dietary Protein ◽  
Nutritional Quality ◽  
Room Temperature ◽  
Protein Quality ◽  
Control Diet ◽  
Peanut Meal ◽  
A Value ◽  
Peanut Cultivars

Abstract Four cultivars of peanuts (Florigiant, Florunner, Starr and Tamnut) grown at two locations (Lewiston, North Carolina (NC) and Stephenville, Texas (TX)) in the National Regional Variety Trials were evaluated for protein nutritional quality. Peanuts, blanched with a minimum of heat treatment and partially defatted on a Carver press, were extracted with hexane at room temperature. Rats were fed these peanut meals to provide 10% of dietary protein (N × 6.25). PER was calculated as the ratio of weight gained to protein consumed for the 28-day feeding period. Adjusted PER values of the 8 peanut meals ranged from 1.3 to 1.7 compared to a value of 2.5 for the casein control diet. No statistically significant differences existed in PER among the 4 cultivars grown in NC. Florunner and Tamnut produced in TX had lower PER values than Florigiant and Starr grown at the same location. Florigiant, Florunner, and Tamnut grown in NC had lower PER values than the same varieties from TX. Rats were fed diets with Florunner peanut meal supplemented with methionine, lysine, and threonine, singly and in all combinations, for 7-day periods. Differences in protein quality between NC and TX-produced peanuts were overcome by addition of methionine to the diets. When all three amino acids were added, peanut meal from both locations supported growth of young rats equal to that of casein.

Effects of dietary protein quality on protein turnover in growing pigs

2000 ◽  
Vol 84 (1-2) ◽  
pp. 29-42 ◽  
Author(s):  
E. Saggau ◽  
R. Schadereit ◽  
M. Beyer ◽  
A. Susenbeth ◽  
J. Voigt ◽  
...  
Keyword(s):  
Dietary Protein ◽  
Protein Turnover ◽  
Protein Quality ◽  
Growing Pigs

Protein quality of Altex canola meal for juvenile chinook salmon (Oncorhynchus tshawytscha) considering dietary protein and 3,5,3′-triiodo-L-thyronine content

Aquaculture ◽  
1983 ◽  
Vol 34 (3-4) ◽  
pp. 213-238 ◽  
Author(s):  
David A. Higgs ◽  
Ulf H.M. Fagerlund ◽  
Jack R. McBride ◽  
M.Dianne Plotnikoff ◽  
Bakhshish S. Dosanjh ◽  
...  
Keyword(s):  
Chinook Salmon ◽  
Dietary Protein ◽  
Oncorhynchus Tshawytscha ◽  
Protein Quality ◽  
Canola Meal ◽  
Juvenile Chinook Salmon ◽  
Juvenile Chinook

The Quality of Fish Flour, Liver Meal, and Visceral Meal as Sources of Dietary Protein

1961 ◽  
Vol 18 (1) ◽  
pp. 85-91
Author(s):  
B. A. Larsen ◽  
W. W. Hawkins
Keyword(s):  
Dietary Protein ◽  
Protein Quality ◽  
Muscle Preparation ◽  
Better Than

Rats were used to test the digestibility and protein quality of dried preparations of muscle and viscera from cod and haddock, and of liver from cod.The digestibility of the preparations from muscle and viscera was good, and better than that of the preparation from liver.The metabolic utilization of nitrogen and the support of growth were good in the case of the muscle preparation, and poor in the case of the visceral and liver preparations.

A nutritional evaluation of diets containing meat meal for growing pigs. 7. The value of meat meal as a potein supplement to barley, oats, sorghum and wheat based diets

1970 ◽  
Vol 10 (46) ◽  
pp. 539 ◽  
Author(s):  
ES Batterham ◽  
MB Manson
Keyword(s):  
Crude Protein ◽  
Dry Matter ◽  
Protein Quality ◽  
Growing Pigs ◽  
Feed Conversion ◽  
Nutritional Evaluation ◽  
Digestible Energy ◽  
Dry Matter Digestibility ◽  
Meat Meal

The comparative value of meat meal as a protein supplement to barley, oats, sorghum, and wheat-based diets was investigated for pigs during the 18-45 kg growth phase. Diets were offered at the rate of 129 kcal digestible energy and 7 g crude protein per kg liveweight per day. Two methods of estimating digestible energy in the diets were also examined. The major differences recorded (Pt0.05) were : Growth rates-Wheat barley and sorghum, oats and barley sorghum. Feed conversion ratios-Wheat barley: oats and sorghum. Protein efficiency ratios-Wheat and oats barley sorghum. Lean in ham-Oats and barley sorghum and wheat. When the magnitude of all differences was considered the results indicated that the protein quality of the sorghum-meat meal diet was lower than that of the other three diets. The correlation between digestible energy values estimated by two methods (energy in feed X dry matter digestibility) and (energy in feed-energy in faeces/feed intake) was significant (r = 0.98)

Digestibility of gross energy and oil of soyabean products for growing pigs

1991 ◽  
Vol 1991 ◽  
pp. 40-40
Author(s):  
J.A. Agunbiade ◽  
J. Wiseman ◽  
D.J.A. Cole
Keyword(s):  
Protein Quality ◽  
Growing Pigs ◽  
Processing Technology ◽  
Considerable Reduction ◽  
Diet Formulation ◽  
Nutritive Values ◽  
Gross Energy ◽  
Soyabean Meal ◽  
Effective Use

The development and improvement in processing technology in recent times has resulted in considerable reduction in trypsin inhibitors and enhancement of protein quality of full-fat soyabeans (FFSB) thus leading to their increased use in relation to soyabean meal (SBM) in animal diets. This study was designed to provide information on the relative nutritive values of the various soya products for their effective use in diet formulation.

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