scholarly journals Digestibility of nutrients and nitrogen balance in chicken breeder meat direction of productivity at different levels of lysine in the fodder

2017 ◽  
Vol 19 (74) ◽  
pp. 7-11
Author(s):  
I. I. Ibatullin ◽  
I. I. Ilchuk ◽  
M. Ya. Kryvenok
Keyword(s):  
Nitrogen Balance ◽  
Crude Protein ◽  
Nitrogen Retention ◽  
Protein Digestibility ◽  
The Body ◽  
Nitrogen Excretion ◽  
Control Group ◽  
Breeder Hens ◽  
Most Significant Change ◽  
Reduced Crude Protein

Experimentally determined digestibility of crude protein, crude fat, crude fiber and NFS and nitrogen balance in the body breeder hens, meat direction of productivity. Found that in the first age period – 27–39 weeks, the most significant change digestibility of crude protein for the reduction of lysine in fodder to 0.73%. It was lower than the control group counterparts to 2.46% (Р ˂ 0.05). Also, in the first 13 weeks of oviposition, the increase of lysine in chicken fodder to 0.81% observed increase digestibility of crude protein – at 1.08–2.14%, crude fat – at 0.82–2.70% (Р ˂ 0.05), and NFS – at 0.40–3.56%. In the second age period – 40–65 weeks significantly reduced crude protein digestibility in chickens that consumed the lowest amount of lysine – 0.71%. Factor protein digestibility in poultry this group was lower than control at 2.68% (Р ˂ 0.05). With the increase of lysine in the fodder in the last 25 weeks of oviposition, digestibility of crude protein has not changed, however, crude fat digestibility and NFS increased respectively by 0.64–1.70 and 1.72–2.00%. Digestibility of fat by changing lysine content in the fodder has not changed substantially. Reduction of lysine resulted in an increase in fodder nitrogen excretion of faeces at 7.02–11.00% (Р ˂ 0.05). Changing the content of lysine in the fodder chicken meat direction of productivity has not significantly affected the nitrogen retention in the body and the ratio of pent oxide in the body of the adopted feed.

Utilization of grass-silage nitrogen by growing sheep

1983 ◽  
Vol 100 (1) ◽  
pp. 43-62 ◽  
Author(s):  
Elisabeth Grenet
Keyword(s):  
Organic Matter ◽  
Formic Acid ◽  
Nitrogen Balance ◽  
Crude Protein ◽  
Nitrogen Loss ◽  
Nitrogen Retention ◽  
Protein Digestibility ◽  
Water Soluble ◽  
Nitrogen Intake ◽  
Green Fodder

SUMMARYThe digestibility, the voluntary intake and the nitrogen balance of 108 diets corresponding to 94 silages prepared from 20 fresh crops were measured in growing sheep. Series of silages were made from the same fresh forage. Each series included two controls: a direct-cut silage without additive and a direct-cut silage with formic acid, with a variable number of experimental silages with different additives.Rumen ammonia concentration, measured on rumen-fistulated sheep, decreased when an additive was used. It increased with nitrogen intake and was inversely related to the organic-matter digestibility and the crude-fibre digestibility. It varied with the silage composition.The crude-protein digestibility of direct-cut silages without additives was similar to or slightly higher than the crude-protein digestibility of the fresh crops. The addition of formic acid depressed the digestibility, but the addition of formaldehyde decreased it even more. The urinary nitrogen loss was higher for silages without additive than for the fresh crops and was decreased by the addition of formic acid. The addition of formaldehyde to formic acid had an additive effect.Retained nitrogen was lower in silages without additives (12% of nitrogen intake) than in parent crops (15·7%). It increased when formic acid (15·8%) was added. The addition of formaldehyde at a low rate (1·5 l/t green fodder) to the formic acid did not increase the nitrogen retention whether expressed in g/day or as percentage of nitrogen intake, but the addition of formaldehyde at a high rate (3·5 l/t green fodder) to formic acid decreased nitrogen retention. The other additives based on cereals or whey did not improve the nitrogen balance compared with formic acid. Nitrogen retention differed according to plant species.Retained nitrogen increased with digestible organic-matter intake and nitrogen intake. It increased with the silage water-soluble carbohydrate content. The higher the silage fermentation product content (ammonia, lactic acid, propionic acid), the lower the retained nitrogen. It appears that the nitrogen value of silages can be high provided that the silages are well preserved and that excessive protein breakdown is avoided.

The effect of offering diets with a reduced crude protein and digestible energy content on the retention and excretion of nitrogen by pigs

1998 ◽  
Vol 1998 ◽  
pp. 33-33
Author(s):  
P.A. Lee ◽  
R.M. Kay
Keyword(s):  
Crude Protein ◽  
Energy Content ◽  
Nitrogen Retention ◽  
Nitrogen Excretion ◽  
Finishing Pigs ◽  
Digestible Energy ◽  
Dietary Nitrogen ◽  
Reduced Crude Protein ◽  
Sparing Effect ◽  
The Cost

Manipulation of dietary nitrogen content can reduce nitrogen excretion (NE) by the pig by 40 per cent (Kay and Lee, 1995), which has major implications for pollution legislation. Past work (Kay and Lee, 1996) has shown that whilst reduced crude protein (CP) diets reduce NE whilst maintaining nitrogen retention (NR), there is also an increase in backfat depth at slaughter. This suggests an ‘energy sparing’ effect from the lower levels of excess amino acids which might be exploited to lower the cost of the reduced CP diets. The objective of this experiment was to determine the NR and NE of growing and finishing pigs offered diets with reduced CP and Digestible Energy (DE) contents compared with commercial diets or diets with reduced CP content only.

scholarly journals Early emergence of axons and formation of accessory nerve (XI) in avian embryos

2016 ◽  
Vol 1 (3) ◽  
pp. 654-659 ◽  
Author(s):  
Ziaul Haque ◽  
Azimul Haque ◽  
Qin Pu ◽  
Ruijin Huang
Keyword(s):  
Weight Gain ◽  
Nitrogen Balance ◽  
Control Diet ◽  
Research Work ◽  
Nitrogen Retention ◽  
Live Weight ◽  
The Body ◽  
Control Group ◽  
Feed Conversion ◽  
Feeding Effect

A research work was undertaken to evaluate the feeding effect of tree forages on performance of growing sheep. Twenty growing sheep (in 4 groups) were fed three different tree forage diets. Tree forages Melia azardirachta, Leucaena leucocephala and Artocarpus heterophyllus were supplied in three treatments except one consisted no tree forages which was considered as control. There were significant (p<0.05) differences among the animal groups in terms of total DM and ME intake, although there were no significant differences in the digestibility of DM, OM, CP and ADF. Feeding of tree forages had significant (p<0.05) effect on live weight gain of sheep. Animals fed with tree forage based diets significantly increased weight gain (60.70 and 50.70 g/d for L. leucocephala and A. heterophyllus, respectively) compared to that (45.66 g/d) of control group fed with silage. Feed conversion efficiency (kg feed/kg gain) also showed that animals fed with tree forage of L. leucocephala and M. azardirachta based diets were having significantly (p<0.05) higher efficiency (11.33 and 11.47, respectively) compared to those of A. heterophyllus and control diet (13.77 and 13.33, respectively). The results of nitrogen balance of M. azardirachta and L. leucocephala tree forage had significantly (p<0.05) positive effect on the nitrogen retention in the body of the animals. Intake of all the tree forages was not similar which indicated that all of them were not accepted to the lamb in same level. So, diets with tree forages of L. leucocephala resulted better in terms of weight gain, digestibility and nitrogen balance compared to A. heterophyllu, M. azardirachta and silage (control).Asian J. Med. Biol. Res. December 2015, 1(3): 654-659

Experiments on the nutrition of the dairy heifer: VII. Observations on the effect of the energy intake on the utilization of protein in growth and in lactation

1969 ◽  
Vol 72 (1) ◽  
pp. 13-30 ◽  
Author(s):  
W. H. Broster ◽  
Valerie J. Tuck ◽  
T. Smith ◽  
V. W. Johnson
Keyword(s):  
Weight Gain ◽  
Nitrogen Balance ◽  
Crude Protein ◽  
Nitrogen Loss ◽  
Latin Square ◽  
Nitrogen Retention ◽  
Live Weight ◽  
The Body ◽  
Live Weight Gain ◽  
Digestible Crude Protein

SUMMARYEight feeding trials on cattle showed that the response in live-weight gain was curvilinear when protein or energy level was varied independently in rations based on poor quality roughages to which cereals and groundnut were variously added to give a range of protein and energy intakes. Live-weight gain was increased by 0·12 lb/day for each 0·1 lb additional digestible crude protein/day at levels of intake below 0·7 lb/day and by 0·03 lb/day at higher levels. It was increased by 0·4 lb/day for each additional 0·1 lb starch equivalent daily/100 lb live weight at total intakes below 0·9 lb daily/ 100 lb and by 0·2 lb/day at higher levels. Over the range 0·5–2·0 lb digestible crude protein daily and 0·7–1·2 lb starch equivalent daily/100 lb live weight the effects of these nutrients were additive.A Latin square nitrogen balance trial demonstrated that a portion of the nitrogen from a protein supplement was retained in the body despite the excretion of the greater part of it in the urine and a further part in the faeces. Nitrogen retention was increased by a supplement of readily available energy through a decrease in urinary nitrogen loss. Nitrogen balance was not increased by a supplement of a fibrous energy source because this induced an increase in faecal nitrogen loss.In a further feeding trial milk yield was found to be affected in a similar manner to growth. At a yield of 30 lb/day the response per lb starch equivalent added to the diet was 0·5 lb milk including 0·05 lb solids not fat and to an increase of 0·1 lb digestible crude protein daily it was 0·25 lb milk including 0·025 lb solids not fat.

scholarly journals Effect of feeding tree forages on productive performances on growing sheep

2016 ◽  
Vol 1 (3) ◽  
pp. 648-653 ◽  
Author(s):  
Md Zillur Rahman ◽  
Md Yousuf Ali ◽  
Md Azharul Islam Talukder ◽  
Md Ershaduzzaman ◽  
Most Sumona Akter
Keyword(s):  
Weight Gain ◽  
Nitrogen Balance ◽  
Control Diet ◽  
Research Work ◽  
Nitrogen Retention ◽  
Live Weight ◽  
The Body ◽  
Control Group ◽  
Feed Conversion ◽  
Feeding Effect

A research work was undertaken to evaluate the feeding effect of tree forages on performance of growing sheep. Twenty growing sheep (in 4 groups) were fed three different tree forage diets. Tree forages Melia azardirachta, Leucaena leucocephala and Artocarpus heterophyllus were supplied in three treatments except one consisted no tree forages which was considered as control. There were significant (p<0.05) differences among the animal groups in terms of total DM and ME intake, although there were no significant differences in the digestibility of DM, OM, CP and ADF. Feeding of tree forages had significant (p<0.05) effect on live weight gain of sheep. Animals fed with tree forage based diets significantly increased weight gain (60.70 and 50.70 g/d for L. leucocephala and A. heterophyllus, respectively) compared to that (45.66 g/d) of control group fed with silage. Feed conversion efficiency (kg feed/kg gain) also showed that animals fed with tree forage of L. leucocephala and M. azardirachta based diets were having significantly (p<0.05) higher efficiency (11.33 and 11.47, respectively) compared to those of A. heterophyllus and control diet (13.77 and 13.33, respectively). The results of nitrogen balance of M. azardirachta and L. leucocephala tree forage had significantly (p<0.05) positive effect on the nitrogen retention in the body of the animals. Intake of all the tree forages was not similar which indicated that all of them were not accepted to the lamb in same level. So, diets with tree forages of L. leucocephala resulted better in terms of weight gain, digestibility and nitrogen balance compared to A. heterophyllu, M. azardirachta and silage (control).Asian J. Med. Biol. Res. December 2015, 1(3): 648-653

Nutrient digestibility and nitrogen balance for high-productive cows fed by polysaccharides

2017 ◽  
Author(s):  
А.В. Косолапов
Keyword(s):  
Nitrogen Balance ◽  
Crude Protein ◽  
Reference Group ◽  
Protein Digestibility ◽  
Nutrient Digestibility ◽  
Nitrogen Excretion ◽  
The Third ◽  
Daily Milk Yield ◽  
Nitrogen Secretion ◽  
Daily Milk

Изложены результаты изучения переваримости питательных веществ и баланса азота у высокопродуктивных коров при введении в рацион полисахаридов. Коровы 1-й (контрольной) группы в составе основного рациона получали свекловичную патоку, коровы 2-й и 3-й опытных групп ― полисахариды в количестве 100 и 150 г на голову в сутки. Использование полисахаридов в количестве 150 г способствовало повышению валового удоя 4 % молока на 6,18 %, выхода молочного белка ― на 4,87 %. Суточные удои молока натуральной жирности у коров 3-й опытной группы составляли 33,15 кг, что на 2,27 кг больше, чем в контрольной группе. Переваримость сухого и органического вещества в контрольной и опытных группах достоверно не различалась. Переваримость сырого протеина была выше у животных, получавших полисахариды. Включение в рационы коров полисахаридов в количестве 150 г на голову в сутки способствовало достоверному повышению переваримости сырой клетчатки до 54,4 % против 50,8 % в контроле. Азот рациона лучше переваривался и использовался  в группах, в которых скармливались  полисахариды. Экскреция азота с мочой была наибольшей в контрольной группе и составляла 302,16 г против 296,9 и 283,79 г в 2-й и 3-й опытных группах соответственно. Увеличение выведения азота из организма животных существенно отразилось на его использовании. У животных контрольной группы этот показатель составил 166,31 г, у коров 3-й опытной группы он был достоверно выше и составил 178,72 г. Баланс азота у животных во всех группах был положительный, но в 3-й опытной группе он был выше контроля на 10,5 %. Добавление в рацион 150 г полисахаридов способствовало увеличению выделения азота с молоком и его использованию от принятого с кормом, что в конечном итоге благоприятно сказалось на продуктивности. The cows of the reference group obtained beet molasses, groups 2 and 3 ― 100 and 150 g of polysaccharides per head daily. 150 g of polysaccharides increased gross yield of 4 %–milk by 6.18 %, milk protein ― by 4.87 %. Daily milk yield for the third group made up 33.15 kg, exceeding the reference group by 2.27 kg. Dry and organic matter digestibility had no significant differences among the groups. Crude protein digestibility was higher for the cows fed by polysaccharides. 150 g of polysaccharides significantly increased crude fiber digestibility up to 54.4 % versus 50.8 % of the reference variant. Nitrogen digestibility was better for the second and third groups. Nitrogen excretion via urine for the reference group was 302.16 g versus 296.9 and 283.79 g for the experimental groups. Increase in nitrogen excretion significantly affected its utilization being 166.31 g for the reference group and 178.72 g ― for the third group. All the groups had positive nitrogen balance but the third group exceeded the reference one by 10.5 %. 150 g of polysaccharides increased nitrogen secretion through milk and milk productivity.

The effect of offering diets with a reduced crude protein and digestible energy content on the retention and excretion of nitrogen by pigs

1998 ◽  
Vol 1998 ◽  
pp. 33-33 ◽  
Author(s):  
P.A. Lee ◽  
R.M. Kay
Keyword(s):  
Crude Protein ◽  
Energy Content ◽  
Nitrogen Retention ◽  
Nitrogen Excretion ◽  
Finishing Pigs ◽  
Digestible Energy ◽  
Dietary Nitrogen ◽  
Reduced Crude Protein ◽  
Sparing Effect ◽  
The Cost

Manipulation of dietary nitrogen content can reduce nitrogen excretion (NE) by the pig by 40 per cent (Kay and Lee, 1995), which has major implications for pollution legislation. Past work (Kay and Lee, 1996) has shown that whilst reduced crude protein (CP) diets reduce NE whilst maintaining nitrogen retention (NR), there is also an increase in backfat depth at slaughter. This suggests an ‘energy sparing’ effect from the lower levels of excess amino acids which might be exploited to lower the cost of the reduced CP diets. The objective of this experiment was to determine the NR and NE of growing and finishing pigs offered diets with reduced CP and Digestible Energy (DE) contents compared with commercial diets or diets with reduced CP content only.

The metabolic response to severe head injury

1984 ◽  
Vol 60 (4) ◽  
pp. 687-696 ◽  
Author(s):  
Guy L. Clifton ◽  
Claudia S. Robertson ◽  
Robert G. Grossman ◽  
Susan Hodge ◽  
Richard Foltz ◽  
...  
Keyword(s):  
Body Surface ◽  
Nitrogen Balance ◽  
Metabolic Response ◽  
The Body ◽  
Nitrogen Excretion ◽  
Content Type ◽  
Head Injured ◽  
The Mean ◽  
Metabolic Expenditure ◽  
Injured Patients

✓ Caloric expenditure and nitrogen balance were measured in 14 steroid-treated comatose head-injured patients acutely and up to 28 days after injury. During this period patients were fed with a continuous enteral infusion of a formula containing 2 Kcal/cc and 10 gm nitrogen/liter. Indirect calorimetry was carried out for 102 patient-days. The mean resting metabolic expenditure (RME) for nonsedated nonparalyzed patients was 138% ± 37% of that expected for an uninjured resting person of equivalent age, sex, and body surface area. Nitrogen excretion was measured for 135 patient-days. The mean excretion was 20.2 ± 6.4 gm/day. The mean protein caloric contribution was 23.9% ± 6.7% and was greater than 25% for six patients, compared to normal values of 10% to 15%. Despite hyperalimentation, positive nitrogen balance for any 3-day period was achieved in only seven patients, and required replacement of 161% to 240% of RME with enterally administered formula. Head-injured patients had a metabolic response similar to that reported for patients with burns of 20% to 40% of the body surface.

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.

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