The effect of subclinical nematode parasitism on digestion and performance in growing pigs

1980 ◽  
Vol 30 (2) ◽  
pp. 285-294 ◽  
Author(s):  
H. D. Pattison ◽  
R. J. Thomas ◽  
W. C. Smith
Keyword(s):  
Nitrogen Retention ◽  
Live Weight ◽  
Growing Pigs ◽  
Feed Conversion ◽  
Crude Fibre ◽  
Eye Muscle ◽  
Oesophagostomum Dentatum ◽  
Gross Energy ◽  
Tissue Changes ◽  
And Performance

ABSTRACTA preliminary trial established a subclinical level of infection with Oesophagostomum dentatum capable of affecting the performance of growing pigs. Thereafter a slightly higher level of infection (100 000 larvae) was administered to each of 24 individually- and scale-fed pigs to investigate the effect of O. dentatum on performance, digestibility and nitrogen retention over the live-weight range 32 to 64 kg. Worm-free but otherwise similar pigs served as controls. Infection reduced growth rate (12·9 %) and decreased efficiency of feed conversion to body weight (14·9%). There was no effect on killing-out percentage or area of eye muscle in cross-section, but infected pigs had relatively lower backfat depths (5·5 to 12·5 %). Infection did not influence nitrogen retention, but apparent digestibility of the dry matter, organic matter, nitrogen, gross energy and crude fibre was reduced. Possible explanations for these effects are discussed in relation to tissue changes associated with larval development in the large intestine.

The energy and nitrogen metabolism and performance of pigs infected with Oesophagostomum dentatum

1983 ◽  
Vol 36 (1) ◽  
pp. 137-142 ◽  
Author(s):  
M. Stewart ◽  
C. W. Holmes ◽  
W. C. Smith ◽  
W. A. G. Charleston
Keyword(s):  
Clinical Symptoms ◽  
Nitrogen Retention ◽  
Live Weight ◽  
Open Circuit ◽  
Growing Pigs ◽  
Post Mortem ◽  
Oesophagostomum Dentatum ◽  
Gross Energy ◽  
Pig Performance ◽  
And Performance

ABSTRACTThe effect of Oesophagostomum dentatum on the performance of growing pigs over the live-weight range 20 to 80 kg was investigated. Fourteen individually-penned pigs in Experiment 1 and 16 group-penned but individually fed pigs in Experiment 2 were orally dosed once with 80 000 or 20 000 larvae respectively at about 18 kg live weight. Worm-free but otherwise similar pigs served as controls. Three energy and nitrogen balance studies were undertaken in two open-circuit calorimeters on four infected gilts and their paired worm-free counterparts on two levels of feeding at 7, 21 and 49 days after infection. Worm burdens averaging 4 255 and 4 722 in Experiments 1 and 2 respectively were recorded post mortem but performance and carcass measurements were not affected, neither were there any clinical symptoms. No significant differences between infected and worm-free pigs were recorded for either apparent digestibility of nitrogen and gross energy or for nitrogen retention. Possible reasons for the lack of measurable effects on pig performance are discussed.

A comparison of two contrasting types of grain sorghum in the diet of the growing pig

1979 ◽  
Vol 29 (1) ◽  
pp. 143-150 ◽  
Author(s):  
M. Almond ◽  
W. C. Smith ◽  
G. P. Savage ◽  
T. L. J. Lawrence
Keyword(s):  
Crude Protein ◽  
Dry Matter ◽  
Nitrogen Retention ◽  
Live Weight ◽  
Feed Conversion ◽  
Eye Muscle ◽  
Subsequent Trial ◽  
Growing Pig ◽  
Sorghum Variety ◽  
Gross Energy

ABSTRACTA study was undertaken to compare the chemical composition of Texas No. 2 hybrid yellow sorghum with that of a traditional brown-seeded variety and also their digestibility and nitrogen retention in the growing pig. Dry matter, crude protein and gross energy contents and amino acid composition were similar in the two varieties but brown-seeded sorghum had a markedly higher tannin content. In diets containing 70% of either yellow or brown sorghum, N retention was marginally higher on the yellow sorghum diet and apparent digestibility of dry matter, nitrogen and gross energy was improved (0·07, 0·06 and 0·12 units respectively). The improvements in digestible energy and crude protein content of the yellow sorghum diet over the brown-seeded one were 10% and 6% respectively. In a subsequent trial 16 pigs were individually and scale-fed each of the diets over the live-weight range 28 to 81 kg. Growth rates and feed conversion ratios were better on the yellow sorghum diet (10%) but sorghum variety did not influence killing-out percentage, deposition of backfat or area of eye muscle in cross-section.

A note on the use of sorghum as a substitute for maize in a diet for growing pigs

1982 ◽  
Vol 35 (3) ◽  
pp. 443-445
Author(s):  
Paula M. A. A. Serra ◽  
O. E. R. Olivetra ◽  
T. H. Fernandes
Keyword(s):  
Dry Matter ◽  
Nitrogen Retention ◽  
Live Weight ◽  
Conversion Ratio ◽  
Growing Pigs ◽  
Food Conversion ◽  
Feeding Trial ◽  
Crude Fibre ◽  
Growing Pig ◽  
Gross Energy

ABSTRACTAn experiment was undertaken to examine the effect of using sorghum as a substitute for maize on digestibility and nitrogen retention in the growing pig. Two levels of sorghum, 200 and 400 g/kg, substituting for maize on a weight basis, were used. The chemical composition of control and test diets was similar. In the metabolism trial, digestibility coefficients for dry matter, crude fibre, nitrogen and gross energy were significantly lower for the animals given the higher level of sorghum. In the feeding trial, no significant differences were recorded between the three groups in relation to food conversion ratio, daily live-weight gain, killing-out proportion and carcass quality. It is concluded that yellow sorghum may replace up to 400 g of maize per kg in diets for growing pigs without having detrimental effects on animal performance.

A note on the utilization of urea by Sudan desert sheep

1971 ◽  
Vol 13 (1) ◽  
pp. 201-204
Author(s):  
H. M. Hassan ◽  
A. M. S. Mukhtar
Keyword(s):  
Weight Gain ◽  
Crude Protein ◽  
Nitrogen Retention ◽  
Young Male ◽  
Live Weight ◽  
Protein Digestibility ◽  
Feed Conversion ◽  
Crude Fibre ◽  
Live Weight Gain ◽  
Nitrogen Free Extract

SUMMARYSixty-four young male Sudan desert lambs were group-fed for 87 days on four diets, all containing approximately 10% crude protein. The four diets contained 0, 1·3, 1·7 and 2·7% urea, respectively.Average daily gains were 0·15, 0·14, 0·14 and 0·13 kg; feed conversion ratios (kg of feed required to produce 1 kg live-weight gain) were 7·26, 8·14, 8·92 and 7·92; dressing percentages were 43·6, 42·1, 44·1 and 42·3.Digestibility trials with lambs fed on diets with 0 or 2·7% urea gave higher digestibility coefficients for crude fibre and nitrogen-free extract for the urea-supplemented lambs. Crude protein digestibility and nitrogen retention values were lower for urea-supplemented lambs.

scholarly journals EFFECT OF DURATION OF COOKING MUCUNA UTILIS SEED ON PROXIMATE ANALYSIS, LEVELS OF ANTINUTRITIONAL FACTORS AND PERFORMANCE OF BROILER CHICKENS

2021 ◽  
Vol 34 (1) ◽  
pp. 45-53
Author(s):  
C. D. Tuleun ◽  
J. P. Patrick
Keyword(s):  
Hydrogen Cyanide ◽  
Broiler Chickens ◽  
Proximate Analysis ◽  
Antinutritional Factors ◽  
Feed Conversion ◽  
Crude Fibre ◽  
Nitrogen Free Extract ◽  
Gross Energy ◽  
And Performance ◽  
Performance Results

The effect of cooking regime on the proximate composition, gross energy and anti-nutitional factors (trypsin inhibitor, phytic acid, hydrogen cyanide, tannin, oxalates and saponins) of Mucuna utilis seed was investigated. Two experiments were conducted with 120 seven-day old broilers of equal average initial weight to evaluate the effect of duration of cooking mucuna seed at 100oC for 20, 40 and 60 minutes on performance. Results showed that duration of cooking did not have any significant (P >  0.05) effects on the dry matter, crude fibre and gross energy. However, the crude protein, either extract and nitrogen free extract significantly (P < 0.05) decreased. The anti-nutrients; tannins, trypsin inhibitory activity, hydrogen cyanide, total oxalates significantly (P < 0.05) reduced with increase in duration of cooking. Feed intake, weight gain feed conversion efficiency, protein intake and utilization were significantly (P < 0.05) improved with increase in cooking time. It was concluded that raw Mucuna utilis seeds contain high levels of anti-nutritional factors and may be unsuitable as feed ingredient but cooking reduced the anti-nutritive substances in the raw seeds.

Effect of dietary crude fibre level on intake, digestibility and productivity of slow-growing indigenous Venda chickens aged one to 91 days

2017 ◽  
Author(s):  
Muzi M Ginindza ◽  
Jones W Ng’Ambi ◽  
David Norris
Keyword(s):  
Growth Rate ◽  
Nitrogen Retention ◽  
Live Weight ◽  
Quadratic Equation ◽  
Nutrient Digestibility ◽  
Feed Conversion ◽  
Crude Fibre ◽  
Production Parameters ◽  
Optimal Productivity ◽  
Slow Growing

Two experiments were conducted to determine diet crude fibre (CF) levels for optimal productivity of slow-growing indigenous Venda chickens. In each experiment the diets were isocaloric and isonitrogenous but with different CF levels of 2, 3, 5, 6 and 8%. A complete randomised design was used in both experiments, the starter (1-49 days) and finisher (50-91 days). A quadratic equation was used to determine CF levels for optimal productivity. Dietary CF levels of 3.4, 4.0 and 3.0 % optimised growth rate, feed conversion ratio (FCR) and live weight of unsexed Venda chickens (starter), respectively; and higher dietary CF levels resulted in lower (P less tha 0.05) intake and digestibility. Dietary CF levels of 6.5, 4.3, 3.2 and 4.4 % optimised feed intake, growth rate, nitrogen retention and live weight of male Venda chickens (finisher), respectively; while higher dietary CF levels resulted in poor (P less tha 0.05) FCR and nutrient digestibility. The results indicate that different CF levels optimised production parameters, and dietary CF levels for optimal productivity increased as chickens grew older.

Protein levels in diets for European pigs in the tropics. 1. The effect of methionine supplementation on the protein requirement of growing pigs

1975 ◽  
Vol 20 (1) ◽  
pp. 133-146 ◽  
Author(s):  
B. L. Fetuga ◽  
G. M. Babatunde ◽  
V. A. Oyenuga
Keyword(s):  
Protein Level ◽  
Nitrogen Retention ◽  
Live Weight ◽  
Growing Pigs ◽  
Feed Conversion ◽  
Large White ◽  
Dietary Nitrogen ◽  
Protein Levels ◽  
Weight Growth ◽  
Cystine Level

SUMMARYOne hundred and twenty-eight Landrace and Large White pigs were allocated on the basis of sex, litter origin and initial weight to one of 16 treatments, made up of four basal 16, 18, 20 and 22% protein diets, each supplemented with either 0·00, 0·10, 0·15 or 0·20% synthetic DL-methionine, at a common digestible energy level of 3740 kcal/kg. Pigs were reared between 8 and 50 kg live weight. Growth rate of pigs and efficiency of feed conversion were significantly improved as the protein levels were increased up to the 20% protein level, optimal performance being on the 20% protein diet, with added 0·15% methionine, giving a total methionine+cystine level of 0·65% and a lysine level of 1·07%. Addition of synthetic methionine to the diets resulted in significant improvement in the rate and efficiency of gain only at the 16 and 18% protein levels.Carcass leanness and fatness increased and decreased respectively over the whole range of protein levels. Graded addition of DL-methionine within each protein level did not influence carcass characteristics.Nitrogen retention showed optimal utilization of dietary nitrogen to be at the 18% protein level, with a total dietary methionine + cystine level of 0·61%, which was at variance with the levels indicated by both growth and feed efficiency.

scholarly journals Growth performance and bio-economics of growing pigs fed diets containing separately fermented and unfermented cassava tuber wastes

2013 ◽  
Vol 13 (59) ◽  
pp. 7957-7971
Author(s):  
SO Aro ◽  
◽  
JO Agbede ◽  
VA Aletor ◽  
AA Ashimi
Keyword(s):  
Weight Gain ◽  
Body Weight Gain ◽  
Control Diet ◽  
Live Weight ◽  
Dietary Treatment ◽  
Nutrient Digestibility ◽  
Growing Pigs ◽  
Feed Consumption ◽  
Feed Conversion ◽  
Crude Fibre

A feeding trial was conducted to investigate the performance, haematology, nutrient digestibility and economics of production of growing pigs fed diets containing differently fermented cassava starch residue (CSR) and cassava peels (CP) altogether referred to as cassava tuber wastes (CTW). The CSR and CP were each divided into three parts and processed as dry unfermented (UFCRS Diet 2; UFCP Diet 5), naturally fermented (NFCSR Diet 3; NFCP Diet 6) and microbial fermentation by inoculation (MFCSR Diet 4; MFCP Diet 7). Each part was included in a control diet (Diet 1) to replace maize at 20% dietary level to make a total of seven treatments. The final live weight (F LW), total live weight gain (TL G) and total feed consumption (TFC) of pigs fed the control diet were not significantly (p>0.05) different from those fed the test diets. However, the feed conversion ratio (FC R) of pigs fed the control was consistently lower (3.93) than those fed CSR (3.68- 3.30) and CP (3.75- 3.36) - based diets. The response of RBC, WBC, Hb and PCV to the dietary treatment varied significantly (p<0.05) with the CTW -product incorporated into the diets vizs: RBC 10 6 /mm 3 : 7.53 vs CSR (5.71- 6.26) and CP (4.71- 5.75); WBC 10 3 /mm 3 :14.84 vs CSR (9.06- 10.06) and CP (8.53- 10.90) , and PCV%: 36.75 vs CSR (35.75- 36.00) and CP (32.5- 37.00) while the MCHC and differential counts were not significantly (P>0.05) affected. Varied effects on the digestibility of major ingredients in the diets were observed with the digestibility of dry matter (DM) been enhanced : 0.49- 8.68% and 3.10- 7.48%, organic matter (OM): 1.60 -9.37% and 3.41- 8.43%, crude protein: 3.33- 6.17% and 1.18 -4.10% , and crude fibre (CF): 24.37- 30.52% and 2.34- 28.80% by CSR and CP, respectively , over the control diet . T he Mean Apparent Digestibility (MAD) for NFE (CSR 65.07%; CP 69.33%) was higher than that of the control diet (61.49%) . The cost of feed intake per pig decreased : 11.92 -12.76% and 8.38 -14.95% , cost of feed per k g body weight gain: 14.84- 22.66% and 14.84- 21.88% with enhanced gross profit increase of 19.66 -29.02% and 14.37- 26.50% in CSR - and CP -based diets, respectively. It can , therefore, be concluded that CTW products could be included in pig’s diet as an alternative to maize.

The effects of dietary supplementation with lysine and methionine on body and tissue composition in the pig

1969 ◽  
Vol 11 (4) ◽  
pp. 521-532 ◽  
Author(s):  
H. Ostrowski
Keyword(s):  
Total Yield ◽  
Nitrogen Retention ◽  
Live Weight ◽  
Tissue Composition ◽  
Feed Conversion ◽  
Feeding Trial ◽  
Glutamic Oxaloacetic Transaminase ◽  
Muscle Area ◽  
Eye Muscle ◽  
Synthetic Amino Acids

SUMMARYA feeding trial was conducted on 24 individually-fed pigs given either a diet containing plant protein with insufficient Iysine and methionine or the same diet with optimal Iysine and methionine levels. Supplementation of the diet with synthetic amino acids significantly improved daily live-weight gain, feed conversion, nitrogen balance, loin eye muscle area and total yield of lean muscle.Pigs receiving insufficient Iysine and methionine were characterized by lower haemoglobin and creatinine values accompanied by a decreased level of glutamic oxaloacetic transaminase.There were highly significant differences in the blood and liver Iysine levels of the two treatments, and significant differences in the fresh muscle and in the pressed muscle juice Iysine levels.The ratios between liver and blood Iysine levels and between dietary or muscle Iysine levels and % of nitrogen retention were calculated and found to be the same on both treatments.The accumulation of Iysine in liver and muscle was linearly related to the blood Iysine level and to N retention and Iysine intake.

Effect of microbial enzyme supplementation on energy, amino acid digestibility and performance of pigs fed hulless barley based diets

1998 ◽  
Vol 78 (4) ◽  
pp. 625-631 ◽  
Author(s):  
S. K. Baidoo ◽  
Y. G. Liu ◽  
D. Yungblut
Keyword(s):  
Nutrient Utilization ◽  
Growing Pigs ◽  
Canola Meal ◽  
Feed Conversion ◽  
Hulless Barley ◽  
Microbial Enzyme ◽  
Indispensable Amino Acids ◽  
Gross Energy ◽  
Enzyme Supplementation ◽  
And Performance

Two experiments were conducted to investigate the influence of a microbial enzyme preparation on the digestibility and performance of starter-growing pigs fed hulless barley based diets. In the digestibility trial, eight pigs with an average initial body weight of 14.3 ± 0.4 kg initial liveweight were surgically fitted with steered ileo-cecal valve cannulas at the terminal ileum. Two hulless barley varieties (Condor and CDC Buck) were separately used as the dietary energy source (77.6%) with canola meal as the protein supplement (20%). Enzyme supplementation improved (P < 0.05) the ileal dry matter (DM) digestibility by 15.2%, gross energy (GE) by 11.0% and protein by 7.6%. The average apparent ileal digestibility of the indispensable amino acids was improved by 6.9% (P < 0.05), and of nonstarch polysaccharides (NSP) was improved by 90%. The total-tract digestibility of DM was increased by 6.2%, GE by 6% and crude protein (CP) by 9.4% (P < 0.05). Enzyme supplementation tended to enhance digestion in the small intestine instead of the hind-gut as expected. In the growth performance trial, positive responses from enzyme supplementation were observed from both mash and pelleted diets fed to 48 pigs grown from 9 to 60 kg liveweight. The ADG was improved by 8.6% (P < 0.05) and feed conversion by 8.7% (P = 0.09). Pelleting had no adverse effect on enzyme activity. The results demonstrated that the enzyme supplementation improved (P < 0.5) nutrient utilization and performance of pigs fed diets containing hulless barley. Key words: Enzyme, hulless barley, digestibility, performance, swine

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