THE INFLUENCE OF APPARENT DIGESTIBLE ENERGY AND APPARENT DIGESTIBLE NITROGEN IN THE DIET ON WEIGHT GAIN, FEED CONSUMPTION, AND NITROGEN RETENTION OF GROWING MINK

1962 ◽  
Vol 40 (10) ◽  
pp. 1375-1389 ◽  
Author(s):  
D. G. Sinclair ◽  
E. V. Evans ◽  
I. R. Sibbald

The influences of the apparent digestible energy (A.D.E.) and the apparent digestible nitrogen (A.D.N.) content of the diet on the food consumption, nitrogen retention, and growth of mink from weaning to pelting age have been determined. It was demonstrated with diets containing from 3.33 to 4.21 Cal of A.D.E. and 26.14 to 39.76 mg of A.D.N. per g of dry matter that increasing the available energy and nitrogen in the diet had a beneficial influence on the growth of mink from 6 to 26 weeks of age. A linear relationship existed between the weight of food consumed and the reciprocal of the A.D.E. content of the food, which indicated that food consumption was largely regulated by the digestible energy content of the diet. The percentage of digestible nitrogen retained was curvilinearly related to the A.D.E.:A.D.N. ratio and appeared to be maximal when the diet contained 140 Cal of digestible energy per g of digestible nitrogen.

1962 ◽  
Vol 40 (1) ◽  
pp. 1375-1389 ◽  
Author(s):  
D. G. Sinclair ◽  
E. V. Evans ◽  
I. R. Sibbald

The influences of the apparent digestible energy (A.D.E.) and the apparent digestible nitrogen (A.D.N.) content of the diet on the food consumption, nitrogen retention, and growth of mink from weaning to pelting age have been determined. It was demonstrated with diets containing from 3.33 to 4.21 Cal of A.D.E. and 26.14 to 39.76 mg of A.D.N. per g of dry matter that increasing the available energy and nitrogen in the diet had a beneficial influence on the growth of mink from 6 to 26 weeks of age. A linear relationship existed between the weight of food consumed and the reciprocal of the A.D.E. content of the food, which indicated that food consumption was largely regulated by the digestible energy content of the diet. The percentage of digestible nitrogen retained was curvilinearly related to the A.D.E.:A.D.N. ratio and appeared to be maximal when the diet contained 140 Cal of digestible energy per g of digestible nitrogen.


1974 ◽  
Vol 54 (4) ◽  
pp. 639-644 ◽  
Author(s):  
R. J. BELZILE ◽  
L. S. POLIQUIN ◽  
J. D. JONES

A trial for testing the replacement value of rapeseed flour (RF) (blend of Brassica napus and campestris) for raw meat was conducted with growing-furring mink. The RF contained 67% crude protein and approximately 1/10 of the quantity of glucosinolates normally found in commercial meal. Forty male pastel mink were fed diets containing 0, 6.5, 13.4 and 20% RF (dry-matter basis) from the end of July to pelting. On a dry-matter basis, the diets contained approximately 41% protein and the percentages of protein as RF protein were 0, 4.3, 9 and 12.4. Initially, the animals ate significantly (P < 0.05) more feed and grew significantly (P < 0.05) faster on the 0 and 6.5% RF diets, but later, weight gain and feed consumption were the same for all groups (P > 0.05). After 70 days on trial, weight gain was less (P < 0.05) on the 20% RF diet compared with the 0 and 6.5% diets. There was a significant (P < 0.05) reduction in the apparent digestibilities of dry matter, gross energy and nitrogen, and in nitrogen retention for the mink receiving the diets containing 13.4 and 20% RF. Mink fed the 20% RF diet showed significant (P < 0.05) thyroid hypertrophy, but at slaughter serum protein-bound iodine level was the same (P > 0.05) for all groups. There was little difference among groups with respect to pelt size and pelt quality.


1967 ◽  
Vol 9 (2) ◽  
pp. 141-148 ◽  
Author(s):  
D. J. A. Cole ◽  
J. E. Duckworth ◽  
W. Holmes

1. The voluntary feed intakes of pigs fed on diets having calculated digestible energy contents of 2,970, 3,356, 3,630 and 3,910 kcal/kg. dry matter were measured over four periods from 38 to 105 kg. live-weight.2. The pigs achieved similar daily digestible energy intakes regardless of the digestible energy content of the diet.3. When housed in metabolism crates pigs ate less than when housed in holding pens and the difference was greater than would be expected solely from the reduced exercise of the pigs in crates.4. Daily digestible energy intake was 575 kcal/kg. live-weight 0.675 when the pigs were in holding pens. The daily digestible energy intake of pigs in metabolism crates increased less with live-weight.5. The use of metabolism crates to obtain digestibility coefficients and values for nitrogen retention to be applied to animals housed under other conditions is discussed in relation to the differences found in apparent digestibility coefficients, feed intake and growth rates between pigs in crates and in holding pens.


1976 ◽  
Vol 35 (2) ◽  
pp. 253-258 ◽  
Author(s):  
R. Braude ◽  
H. D. Keal ◽  
M. J. Newport

1. Diets containing different proportions of skim milk and fat, either beef tallow or soya-bean oil, supplemented with fat-soluble vitamins were given to 2-d-old pigs. Each fat source was used in three diets containing approximately 280, 350 and 420 g fat, and 260, 235 and 210 g protein/kg dry matter respectively..2. The diets were given as a milk containing 200 g solids/l during a 26 d experiment. The pigs were given the diet at hourly intervals according to a scale based on live weight..3. Increasing the energy content of the diet, with the accompanying decrease in protein content, had no effect on live-weight gain or feed: gain ratio (g feed dry matter/g live-weight gain) (other than a slight reduction in live-weight gain when beef tallow was used), or on nitrogen retention. However, the fat content of the carcass of the 28-d-old pig was increased, and its protein and ash content were decreased..4. The apparent digestibilities of the fatty acid ranged from 0.96 to 1.00. The faeces from pigs given the soya-bean-oil diets contained some eicosanoic, docosanoic and tetracosanoic acids, presumably of bacterial origin. In general, palmitic and stearic acids were slightly less well digested than oleic and linoleic acids.


2020 ◽  
Vol 3 (2) ◽  
Author(s):  
Rico Rico ◽  
Novi Eka Wati ◽  
Adisti Rastosari

The objective of the researh was to study the effect of additions soybean meal in ration on the feed consumption, daily weight gain and feed convertion in Simmental cattle. The experiment used eight male Simmental cattle around 2 years old with an average weight of 198,65 ± 14,57 kilograms. The cattle kept for 35 days and given rations P0 (rations ranchers) and P1 (rations plus soybean meal). Data was obtained, then analyzed using independent sample t-test assisted with SPSS version 17.00 software. The result showed that the addition of soybean meal did not affect on dry matter consumption, daily weight gain, and feed convertion but, the crude protein consumption was increased. Keywords: dry matter consumption, daily weight gain, feed convertion


2001 ◽  
Vol 2 (2) ◽  
pp. 26-31
Author(s):  
Al Qudri

ABSTRACT. Tempe of soybean is fermented soybean with Rhizopus ologosporus fungus. From a result of researchers, it is the fact that tempe can increase valuable of nutrion and digest capacity and also produce antibiotic . Utilization of abtibiotic in chiken food as stimulus growth in not recommended because it can cause resistance a certain germ and it is presume there are antibiotic residu in egg and chiken meat. It is hope that the use of fermented soybean oil meal can increase nutrient value and digest capacity as well as produce antibiotic, so that it can get a better growth and over come a problem of using antibiotic in chiken food. The study was conducted to evaluate the effect of fermented soybean oil meal utilization in the ration on body weight gain, feed consumption, feed conversion and mortality. The study use 80 unsex day old chick broiler CP-707 and conducted at Poulty Laboratory Product Agriculture Faculty, Syiah Kuala University. Chiken were putting in 27 houses unit, each unit contain of four chiken. The design of experiment was Completely Randomized Design, four treatments and five replication. The treatments were ration contained 0%, 5%, 10% and 15% fermented soybean oil meal as replace the use of soybean oil meal. The protein and energy content of all dietary treatments were equally composed from six weeks investigation, were body weight gain, feed consumption, feed conversion and mortality. The result of the study indicated that up to 10% graded of fermented soybean oil meal in ration were significant difference influenced increase the body weight gain and decrease the feed conversion. The fermented soybeanoil meal) utilization more than 10% were significant difference decrease the body weight gain and increase the feed conversion. If the inclusion was increase the feed consumption would tendency decline. In this study there were no mortality in all treatment. In can be advised from this study that fermented soybean oil meal could be used in broiler ration or in all poulty ration.


1998 ◽  
Vol 1998 ◽  
pp. 33-33
Author(s):  
P.A. Lee ◽  
R.M. Kay

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.


1971 ◽  
Vol 11 (53) ◽  
pp. 610 ◽  
Author(s):  
MC Nottle

In pen feeding trials with eight Merino wethers, digestion coefficients were estimated for rations of cereal chaff-wheat grain-oat grain mixture, and wheat grain and oat grain fed separately at two levels of intake. Digestion coefficients for wheat and oat grain fed at 675 g/day in a double crossover experiment were dry matter 89.4, 80.8 per cent, organic matter 90.1, 82.6 per cent, protein 82.3, 77.6 per cent, ether extract 84.1, 90.9 per cent, crude fibre 33.2, 59.9 per cent, nitrogen free extractives 93.2, 85.8 per cent, energy 88.1, 81.0 per cent, total digestible nutrients 91.6, 87.1 per cent, and starch equivalents 90.7, 85.7. When these grains were fed at 785 g/day there was about 10 per cent improvement in crude fibre digestibility for both grains and 1-2 per cent improvement for other estimations with oats but not with wheat. The gross energy content of the wheat and oat grains when fed at 675 g/day was 4407 and 4700 calories/g dry matter. The digestible energy of the wheat in calories/g dry matter and organic matter was 3869 � 30, 3933 � 30 and for oats 3791 � 59, 3910 � 61. When fed at 785 g/day these values for wheat were 3850 � 50,3911 � 51 and for oats 3796 � 34, 3913 � 51. A highly significant relationship was found between energy and dry matter digestibility which for wheat diets was Y = 1.074x 7.840. r = 0.993 (P<0.001), and for oats and the mixed diet of cereal chaff-oat grain-wheat grain, Y = 0.983x + 1.550. r = 0.996 (P<0.001) where Y = energy and X = dry matter digestibility and r = the coefficient of correlation. Because of the similar digestible energy content of, and the body weight gains of sheep on, these two grains it was concluded that under the present conditions these grains were equivalent weight for weight.


1971 ◽  
Vol 51 (3) ◽  
pp. 757-760 ◽  
Author(s):  
L. SEIER ◽  
R. J. KIRK ◽  
D. B. BRAGG

A series of seven nitrogen balance studies was conducted, with 12 one-year-old male mink, to examine the metabolic effect of furring in mink. The balance studies, each of two days duration, were carried out on July 14–15 and then semi-monthly until October 15–16, inclusive. Feed consumption increased (P < 0.05) a total of 97% during the furring process. Nitrogen retention changed, but not in a manner parallel to feed consumption. Two peaks were observed for nitrogen retention, one occurring on August 18–19 and the second on October 1–2. The October 1–2 nitrogen retention peak coincided with the initiation of hair growth (September 25). No change was noted in dry matter or protein digestibility over the entire test period.


1983 ◽  
Vol 36 (3) ◽  
pp. 371-381 ◽  
Author(s):  
A. G. Kaiser ◽  
D. F. Osbourn ◽  
P. England

ABSTRACTPrimary growths of perennial ryegrass and red clover were ensiled with formic acid (2 1/t fresh crop), o an equal quantity of formic acid together with formaldehyde (46 or 49 g/kg crude protein in the ryegrass or red clover respectively). The four silages were offered ad libitum to 12 groups, each of five British Friesian steer calves, either alone or with urea or maize starch supplements at 18·4 or 185·2 g/kg total dry-matter intake respectively.Digestible organic matter and digestible energy intake, live-weight gain, carcass weight, nitrogen retention and all digestibility measurements were higher on the ryegrass silages than on the red clover silages. However, dry-matter intake was higher on the red clover silages.Formaldehyde treatment reduced lactic and total acid content, and protein degradation in the silages. It also increased intake, live-weight gain and nitrogen retention on ryegrass but not on red clover, the effect being greater when the urea supplement was given. Digestibility measurements were depressed by formaldehyde treatment, although cellulose digestibility was only depressed in the ryegrass silage.Supplementation with starch depressed silage intake and nitrogen and cellulose digestibility, but increased dry matter, organic matter and energy digestibilities, digestible organic matter and digestible energy intakes, live-weight gain and carcass weight. The positive intake, live-weight gain and carcass weight responses were greater on the silages treated with formic acid, while the digestibility and the live-weight gain responses were greater on the red clover silages. Starch supplementation did not improve nitrogen retention.The different animal production responses to formaldehyde treatment on the ryegrass and red clover silages are discussed.


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