The effect of nitrogen intake, sulphur intake and dietary nitrogen source on the performance of the early weaned calf

1972 ◽  
Vol 12 (59) ◽  
pp. 561 ◽  
Author(s):  
J Leibholz
Keyword(s):  
Blood Plasma ◽  
Dry Matter ◽  
Nitrogen Retention ◽  
Basal Diet ◽  
Sodium Sulphate ◽  
Feed Conversion ◽  
Dietary Nitrogen ◽  
Meat Meal ◽  
Nitrogen Intake ◽  
Cent Nitrogen

An experiment was conducted with 40 male Friesian calves between five and eleven weeks of age to estimate their nitrogen and sulphur requirement. The basal diet contained 2.2 per cent nitrogen which was supplemented with urea or meat meal to 3.1 per cent nitrogen. The urea was added both with and without sodium sulphate. The weight gain and efficiency of feed conversion ratio of the calves fed the diet containing 2.2 per cent nitrogen was lower than that of the calves fed the diets containing 3.1 per cent nitrogen, but they were not affected by the nature of the nitrogen supplement or by the addition of sulphur to the urea supplemented diet which already contained 0.11 per cent sulphur. The apparent digestion of organic matter, dry matter, and nitrogen was greater at six weeks of age than at ten weeks of age. The excretion of nitrogen in the urine was greater in the calves fed the diets containing urea, but there was no difference in nitrogen retention. The retention of sulphur was 0.47 g a day for the calves fed the diet containing 0.11 per cent sulphur compared with 0.85 to 1.75 g a day for the calves fed the other diets. The concentration of urea in the blood plasma was higher in the calves at five weeks of age than at ten weeks of age and increased with increased nitrogen intake. The concentration of urea in the blood plasma was higher in the calves whose diet included urea than in the calves fed the meat meal supplemented diet.

Protein, fat and carbohydrates in the diets of pigs between 7 and 28 days of age

1979 ◽  
Vol 28 (3) ◽  
pp. 391-402 ◽  
Author(s):  
R. H. Wilson ◽  
Jane Leibholz
Keyword(s):  
Crude Protein ◽  
Dry Matter ◽  
Nitrogen Retention ◽  
Milk Proteins ◽  
Live Weight ◽  
Wheat Starch ◽  
Feed Conversion ◽  
Dietary Nitrogen ◽  
Significant Difference ◽  
Weight Gains

ABSTRACTIn two experiments, pigs were weaned at 4 to 5 days of age and offered dry diets based on milk proteins and tallow. Live-weight gains between 7 and 28 days of age were 220 g/day with feed conversion ratios of 0·80 when the optimum diets were given.Expt 1 was a 2 × 2 × 2 factorial with eight pigs per treatment. There were two sources of carbohydrate, lactose and wheat starch, two levels of fat, 40 and 250 g/kg and two levels of crude protein, 140 and 250 g/kg of the diet. There was no significant difference in the performance of pigs when they were fed lactose or wheat starch as the source of carbohydrate. However, the feed intake of the pigs and their weight gains and apparent digestibilities of dry matter and nitrogen were lower when the diets contained 250 g fat/kg than when the diets contained 40 g fat/kg.In Expt 2 six diets were fed to 12 pigs each. The diets contained 150, 180, 210, 240, 270 or 300 g/kg of crude protein. Weight gains and nitrogen retention showed a positive correlation (r= 0·997) with the dietary nitrogen intake but there was no statistical increase in these parameters above the 270 g crude protein/kg level. The apparent digestibilities of dry matter and nitrogen showed a similar trend. A value of 141 mg nitrogen/day per kg M0·75was estimated as the metabolic endogenous loss of nitrogen.

A nutritional evaluation of diets containing meat meal for growing pigs. 2. The effect of level of meat meal or meat and bone meal in wheat-based diets

1969 ◽  
Vol 9 (39) ◽  
pp. 408 ◽  
Author(s):  
ES Batterham ◽  
JM Holder
Keyword(s):  
Organic Matter ◽  
Dry Matter ◽  
Nitrogen Retention ◽  
Growing Pigs ◽  
Meat And Bone Meal ◽  
Feed Conversion ◽  
Bone Meal ◽  
Large White ◽  
Meat Meal ◽  
Organic Matter Digestibility

Wheat based diets containing 10, 20, or 30 per cent of meat meal or meat and bone meal were fed at a daily rate of 3.5 per cent of liveweight to Large White pigs in the 40-160 lb liveweight range. Dry matter and organic matter digestibility and nitrogen retention were determined on pigs fed the meat and bone meal diets. Increasing the inclusion level of both meat meal and meat and bone meal from 10 to 20 per cent significantly increased the lean content of the ham and tended to improve daily gain and feed conversion. Including meat and bone meal at 30 per cent of the diet resulted in a significant depression of growth rate and feed conversion efficiency between 40 and 160 lb liveweight. Dry matter and organic matter digestibility of the diets containing meat and bone meal decreased as the level of meal increased. Nitrogen retention appeared to be greatest at the 20 per cent level.

The effect of urea in the diet of the early-weaned calf on weight gain, nitrogen and sulphur balance, and plasma urea and free amino acid concentrations

1971 ◽  
Vol 22 (4) ◽  
pp. 655 ◽  
Author(s):  
J Leibholz ◽  
RW Naylor
Keyword(s):  
Blood Plasma ◽  
Control Diet ◽  
Nitrogen Concentration ◽  
Amino Nitrogen ◽  
Urea Nitrogen ◽  
Plasma Urea ◽  
Dietary Nitrogen ◽  
Meat Meal ◽  
Nitrogen Intake ◽  
Amino Acid Concentrations

Experiments were conducted with 40 male Friesian calves between 5 and 11 weeks of age. The control diet contained meat meal as the sole protein supplement to grain, and this was replaced by urea to supply 20.1, 39.2, or 55.6% of the dietary nitrogen. The growth rate of the calves, when corrected for digestible dry matter intake, was significantly lower when urea supplied 55.6 % of the dietary nitrogen than when it supplied 0, 20.1, or 39.2% of the dietary nitrogen. The retention of nitrogen and sulphur was lower in the calves given 55.6% of the dietary nitrogen as urea, but the ratio of nitrogen to sulphur retained was constant for all diets. There was a positive correlation between dietary urea nitrogen intake and urea nitrogen concentration in the blood plasma. The urea nitrogen and a-amino nitrogen concentration in the blood plasma was greater in calves at 2 weeks of age than at 11 weeks of age. The concentrations of free glycine, valine, leucine, ornithine, lysine, and histidine in the blood plasma were significantly lower in the calves given the higher levels of urea in the diet.

The Apparent Digestibility of Nutrients and Energy Value to Pigs of Plantains (Musa Sapientum Var. Paradisiaca Linn)

2021 ◽  
Vol 1 (2) ◽  
pp. 184-191
Author(s):  
V. A. Oyenuga ◽  
B. L. Fetuga
Keyword(s):  
Crude Protein ◽  
Dry Matter ◽  
Nitrogen Retention ◽  
Basal Diet ◽  
Metabolizable Energy ◽  
Apparent Digestibility ◽  
Crude Fibre ◽  
Large White ◽  
High Dry Matter ◽  
Nitrogen Free Extract

The proximate and mineral constituents of six plantain forms, raw green plantain (RGP), cooked green plantain (CGP), raw ripe plantain (RRP), cooked ripe plantain (CRP), green plantain meal (GPM) and ripe plantain meal (RPM) were determined by chemical analysis. 24 large white barrows, weighing initially, between 40-45 kg., were used to study the apparent digestibility of nutrients, digestible energy (DE), metabolizable energy (ME), metabolizable energy corrected for nitrogen retention (ME(n) and total digestible nutrients when the plantains served as the only source of nutrients. In a second experiment ME and ME(n) were measured for the plantain forms using 28 Large White barrows, with diets in which the plantains replaced 50% of maize in a basal diet. All the plantain forms had low fat, crude fibre and crude protein content but high in nitrogen-free extract, phosphorus, potassium and Iron. Identically high dry matter (D.M.) and nitrogen-free extract (N.F.E.) digestion coefficients were obtained for all the plantain forms except RPM, which had significantly lower values. Digestion coefficients for crude protein (46.9, 53.6, 51.8, 34.3,-32.7 %), crude fibre, (46.6, 49.5, 58.7, 62.6, 56.9, 39.6 %), ether extract (55.9, 56.6, 66.9, 69.2, 54.7 and 34.6 %) for RGP, CGP, RRP, CRP, GPM and RPM respectively were considerably lower than for D.M. and N.F.E. The DE, ME ME(n) and TDN values were comparable for all plantain forms except RPM, which had significantly lower values in most cases. The fresh green plantains and green plantain meals had slightly higher energy values than the ripe plantains, even though the nutrients in the ripe plantains were better digested than in the green forms. The results are discussed in relation to variations in the relative proportions of the simple and more complex carbohydrates during ripening.

Nitrogen retention during late gestation in the rat in response to marginal zinc intake

1980 ◽  
Vol 239 (2) ◽  
pp. E113-E118 ◽  
Author(s):  
S. Greeley ◽  
G. J. Fosmire ◽  
H. H. Sandstead
Keyword(s):  
Nitrogen Retention ◽  
Basal Diet ◽  
Maternal Plasma ◽  
Late Gestation ◽  
Nitrogen Excretion ◽  
Control Group ◽  
Dietary Zinc ◽  
Dietary Nitrogen ◽  
Multiple Stepwise Regression Analysis ◽  
Zinc Concentrations

This study was conducted to characterize nitrogen retention in response to marginal dietary zinc during gestation. Long-Evans rats were randomly assigned to one of two dietary groups on day 1 of gestation. The dams were fed a basal diet supplemented with either restricted or control levels of zinc. Feces and urine were collected for 24 h on day 20 of pregnancy, and their nitrogen and zinc contents were determined. Urinary and fecal nitrogen excretions were similar for zinc-restricted and control dams, whereas fecal zinc excretions were depressed by feeding the zinc-restricted diet. Mean zinc and nitrogen retentions were negative for the zinc-restricted and positive for the control groups. Multiple stepwise regression analysis showed that nitrogen retention on day 20 depended on both dietary nitrogen and zinc intakes. Zinc-restricted offspring weighed 12% less and the maternal plasma zinc concentrations were reduced by 66% when compared with the control group values on day 22. Marginal dietary zinc and the associated anorexia limited fetal growth without causing excessive nitrogen excretion or severe weight loss.

scholarly journals Effects of Tea Saponin Supplementation on Nutrient Digestibility, Methanogenesis, and Ruminal Microbial Flora in Dorper Crossbred Ewe

Animals ◽  
2019 ◽  
Vol 9 (1) ◽  
pp. 29 ◽  
Author(s):  
Yunlong Liu ◽  
Tao Ma ◽  
Dandan Chen ◽  
Naifeng Zhang ◽  
Bingwen Si ◽  
...  
Keyword(s):  
Nitrogen Retention ◽  
Basal Diet ◽  
Methane Emissions ◽  
Nutrient Digestibility ◽  
Microbial Flora ◽  
Apparent Digestibility ◽  
Tea Saponin ◽  
Nitrogen Intake ◽  
Acid Detergent Fibre ◽  
Dietary Treatments

Two experiments were conducted using Dorper × thin-tailed Han crossbred ewes. In experiment 1, eighteen ewes were randomly assigned to two dietary treatments (a basal diet, or the same basal diet supplemented with 2.0 g tea saponin (TS)/head/day) to investigate the effects of TS supplementation on nutrient digestibility and methane emissions. In experiment 2, six ewes with ruminal cannulae were assigned to the same two dietary treatments as in experiment 1 to investigate the effects of TS supplementation on rumen fermentation and microbial flora. TS supplementation increased the apparent digestibility of organic matter (OM) (p = 0.001), nitrogen (N) (p = 0.036), neutral detergent fibre (NDF) (p = 0.001), and acid detergent fibre (ADF) (p < 0.001). Urinary N (p = 0.001) and fecal N (p = 0.036) output were reduced, and N retention (p = 0.001) and nitrogen retention/nitrogen intake (p = 0.001) were increased. Supplementary TS did not decrease absolute methane emissions (p = 0.519) but decreased methane emissions scaled to metabolic bodyweight by 8.80% (p = 0.006). Ammonia levels decreased (p < 0.001) and total volatile fatty acid levels increased (p = 0.018) in response to TS supplementation. The molar proportion of propionate increased (p = 0.007), whereas the acetate:propionate ratio decreased (p = 0.035). Supplementation with TS increased the population of Fibrobacter succinogenes (p = 0.019), but the population of protozoans tended to decrease (p = 0.054). Supplementation with TS effectively enhanced the apparent digestibility of OM, N, NDF, and ADF, and decreased methane emissions scaled to metabolic bodyweight.

Some factors affecting apparent nitrogen digestibility of roughage diets fed to cattle

1972 ◽  
Vol 78 (2) ◽  
pp. 173-177 ◽  
Author(s):  
J. B. Moran ◽  
J. E. Vercoe
Keyword(s):  
Linear Regression ◽  
Nitrogen Content ◽  
Dry Matter ◽  
Statistical Tests ◽  
Dry Matter Intake ◽  
Zebu Cattle ◽  
Physiological Basis ◽  
Dietary Nitrogen ◽  
Nitrogen Intake ◽  
Faecal Nitrogen

SUMMARYPublished and unpublished results for apparent nitrogen digestibility from 107 digestibility trials with Zebu (Africander, Brahman and their crosses with British cattle) and British breeds of cattle were analysed by regression analyses to determine its relationship with dry matter intake and dietary nitrogen content.The linear regression of apparent nitrogen digestibility on the reciprocal of dietary nitrogen content was an adequate mathematical description of the relation (r = 0·92) and the addition of the reciprocal of nitrogen intake as an independent variable improved the description (r = 0·95) particularly for diets with a low nitrogen content. Both these equations have a physiological basis.Estimates of the true nitrogen digestibility and metabolic faecal nitrogen from the linear regression of apparent nitrogen digestibility on the reciprocal of dietary nitrogen content were 86·8% and 0·49 g/100 g dry-matter intake. Independent estimates of these parameters from a multiple regression of total faecal nitrogen on dry-matter intake and nitrogen intake were 88·7% and 0·46 g/100 g dry-matter intake. The analyses on the breeds suggested that the Zebu cattle may have a higher true digestibility and a lower metabolic faecal nitrogen than the British cattle, although the differences were small and could not be subjected to statistical tests.

Studies on the nutritive value of some common Egyptian feedingstuffs. I. Nitrogen retention and ruminal ammonia curves

1958 ◽  
Vol 51 (2) ◽  
pp. 149-156 ◽  
Author(s):  
K. El-Shazly
Keyword(s):  
Crude Protein ◽  
Nutritive Value ◽  
Fish Meal ◽  
Critical Level ◽  
Linseed Oil ◽  
Nitrogen Retention ◽  
Trifolium Alexandrinum ◽  
Cottonseed Cake ◽  
Meat Meal ◽  
Nitrogen Intake

1. Ten successive trials with two Rahmany adult ewes were carried out with the aim of comparing the nutritive values of the nitrogenous constituents of some concentrates used in Egypt as supplements in summer rations (decorticated cottonseed cake, linseed-oil meal and beans (Vicia faba)) and of animal proteins (meat meal, fish meal and casein) and of barseem (Trifolium alexandrinum). Wheat straw was employed as the main roughage in the ration. Nitrogen intake for all supplements was 10·16 g./day.2. Apparent digestion coefficients for crude protein were estimated. Casein had the highest digestibility coefficient while meat meal was the least digestible.3. Nitrogen retention and ruminal ammonia curves are given for each period. Only three proteins, namely, barseem, cottonseed cake and linseed meal gave positive nitrogen balance at the critical level of nitrogen intake used throughout the trials. Fish meal improved nitrogen retention significantly. Meat meal and beans did not improve nitrogen retention. The addition of 70 g. starch to beans improved nitrogen retention significantly.

scholarly journals The digestibility of biofloc meal from African catfish culture medium as a feed raw material for Pacific white shrimp

2019 ◽  
Vol 18 (1) ◽  
pp. 1-8 ◽  
Author(s):  
Julie Ekasari ◽  
Muhammad Agus Suprayudi ◽  
Putri Elas ◽  
Reza Karunia Senja
Keyword(s):  
Litopenaeus Vannamei ◽  
Dry Matter ◽  
Control Diet ◽  
Basal Diet ◽  
Pacific White Shrimp ◽  
Raw Material ◽  
White Shrimp ◽  
African Catfish ◽  
Feed Conversion ◽  
Dry Matter Digestibility

ABSTRACTThis study was conducted to evaluate the digestibility of biofloc meal collected from catfish culture as a feed raw material for Pacific white shrimp Litopenaeus vannamei diet. A basal feed with 43% crude protein content was used as a control diet and mixed with 2% of binders and 0.5 % of Cr2O3 as a marker for digestibility. The experimental diets were made by mixing 67.5% of the basal diet with 30% of biofloc meal, 2% of binders and 0.5 % of Cr2O3. Nine units of glass tanks (90 cm ×40 cm× 35 cm) filled with 100 L seawater were used as the experimental culture units. White shrimp with an average body weight of 5.61 ± 0.09 g was randomly distributed to each experimental tank at a density of 20 shrimp/tank. The feed was offered at a level of 5% shrimp biomass per day at a frequency of four times a day. The results showed that the dry matter digestibility of feed with 30% biofloc meal in shrimp were similar to that of the reference diet. However, protein and fat digestibility of feed containing biofloc meal were considerably higher than those of the reference diet. Feeding shrimp with 30% biofloc meal diet resulted in higher survival and specific growth rate and lower feed conversion ratio than those of the control. The digestibility of bioflocs dry matter, protein and lipid in Pacific white shrimp obtained in this study were 54.9%, 76.3% and 79.3%, respectively.Keywords: biofloc, digestibility, catfish, shrimp  ABSTRAKPenelitian ini dilakukan untuk mengevaluasi kecernaan tepung bioflok yang diambil dari media pemeliharaan ikan lele sebagai bahan pakan udang vaname Litopenaeus vannamei. Pakan yang mengandung kadar protein 43% digunakan sebagai pakan control dan dicampur dengan 2% binder dan 0.5% Cr2O3 sebagai marker untuk kecernaan. Pakan perlakuan dibuat dengan mencampurkan 67.5% pakan control dengan 30% tepung bioflok, 2% binder dan 0.5% Cr2O3. Penelitian menggunakan sembilan unit akuarium (90 cm ×40 cm ×35 cm) yang diisi 100 L air laut. Udang vaname dengan bobot rata-rata 5.61 ± 0.09 g ditebar secara acak pada setiap akuarium perlakuan pada kepadatan 20 ekor/akuarium. Pakan diberikan dengan tingkat pemberian pakan 5% biomassa per hari sebanyak empat kali sehari. Hasil penelitian ini menunjukkan bahwa kecernaan pakan dengan 30% tepung bioflok tidak berbeda nyata dengan pakan acuan. Namun kecernaan protein dan lemak pakan yang mengandung tepung bioflok terlihat lebih tinggi daripada pakan kontrol. Pemberian pakan dengan tepung bioflok sebanyak 30% juga menghasilkan tingkat kelangsungan hidup, laju pertumbuhan spesifik udang dan rasio konversi pakan yang lebih baik daripada udang yang diberi pakan kontrol. Kecernaan bahan, protein dan lemak tepung bioflok pada udang yang didapat dalam penelitian masing-masing adalah 54.9%, 76.3% dan 79.3%.Kata-kata kunci: bioflok, ikan lele, kecernaan, udang 

scholarly journals Effects of varying levels of dietary palm oil in concentrate rations on dry matter intake, nutrients digestibility and nitrogen retention in Red Sokoto goats

2020 ◽  
Vol 40 (2) ◽  
pp. 122-133
Author(s):  
S. M. Otaru ◽  
A. M. Adamu ◽  
O. W. Ehoche ◽  
H. J. Makun
Keyword(s):  
Adverse Effects ◽  
Palm Oil ◽  
Dry Matter ◽  
Nitrogen Retention ◽  
Basal Diet ◽  
Dry Matter Intake ◽  
Nutrients Digestibility

Twenty Red Sokoto bucks (average liveweight of 21.4±3.2 kg) were used to evaluate the effects of varying levels of palm oil (PO) in concentraterations on nutrients digestibility and nitrogen retention. Five iso-nitrogenous concentrate supplements (CP 160 g/kg concentrate) compounded with 0, 40, 80, 120 and 160 g palm oil/kg of concentrate, were used to supplement a basal diet of wooly finger grass (Digitaria smutsii, Stent) hay. The five supplements were designated as treatments 0-PO (control), 40-PO, 80-PO, 120-PO and 160- PO. The bucks were each fed 536 g/d of hay, and 343 g/d of concentrate to give a ratio of 60:40 hay to concentrate. Results showed that inclusion of PO in the concentrate rations did not affect (P>0.05) total dry matter intake of the goats but intake values declined slightly with further increase in levels of PO beyond 40 g/kg concentrate. No adverse effects on total tract digestibility of nutrients were observed. Nitrogen retention of the goats was positive and not affected (P>0.05) by dietary levels of PO. It was concluded that inclusion of palm oil in the concentrate supplement beyond 40 g/kg level for the Red Sokoto goats marginally depressed total dry matter intake, but had no adverse effects on the total tract digestibility of nutrients and nitrogen retention.

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