NUTRITIVE VALUE OF RAPESEED FLOUR FOR MINK: EFFECTS ON LIVE PERFORMANCE, NUTRIENT UTILIZATION, THYROID FUNCTION AND PELT QUALITY

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.

2012 ◽  
Vol 12 (4) ◽  
pp. 525-537
Author(s):  
Barbara Niwińska ◽  
Krzysztof Bilik

AbstractThe objective of the study was to analyse the effect of enriching milk replacers with crude protein (CP) and/or gross energy (GE) on rearing performance of Polish Holstein-Friesian heifer calves. The study was a 2 × 2 factorial design, with the two factors being CP content (220 and 290 g) and GE content (21 and 23 MJ) of milk replacer dry matter (DM). Thirty-two heifer calves aged 7 days were assigned to 1 of 4 experimental groups (n=8), in which they received limited milk replacer (800 ±10 g DM × day-1) to 56 days of age and the same concentrate mixture ad libitum to 120 days of age. Feeding programme and nutritive value of concentrate mixture were applied as recommended by IZ PIB-INRA feeding standards (2009). Rearing performance was determined from body weight and body size measures at 7, 56 and 120 days of age, and feed and nutrient utilization for weight gain and body size gain during the periods from 7 to 56, 57 to 120 and 7 to 120 days of age. During the liquid feeding period from 7 to 56 days of age, the increase in CP concentration in milk replacers had a statistically significant effect on weight gains, body size (P≤0.05), and utilization of feed DM, CP and GE for weight gain (P≤0.05), while the increase in GE concentration improved daily weight gains and utilization of CP for weight gain (P≤0.05). The increase in CP concentration and the simultaneous decrease in GE concentration had a beneficial effect on the intake of concentrate mixture (statistical tendency, P≤0.1), but its utilization for weight gain was similar in all the experimental groups. Heifer calves that had received protein-rich milk replacers previously, during the period from 57 to 120 days of age ingested more concentrate mixture per day but were less efficient in nutrient utilization for weight gain (statistical tendency, P≤0.1).


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.


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.


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


1974 ◽  
Vol 19 (3) ◽  
pp. 359-365 ◽  
Author(s):  
M. Ivan ◽  
L. R. Giles ◽  
A. R. Alimon ◽  
D. J. Farrell

SUMMARY1. A split-plot design was used to study apparent digestibility of dry matter, gross energy and nitrogen of a whole grain wheat diet and processed (hammermilled, rolled or hammermilled and then steam-pelleted) wheat diets by eight small (33·9 ± 0·1 kg) and eight large (70±1·7 kg) pigs. Metabolizable energy and nitrogen retention were also studied with the small pigs.2. The processed wheat diets were superior to the whole grain wheat diet in all the parameters measured.3. There were no significant differences between the performance of pigs given the differently processed wheat diets.4. Apparent digestibility of dietary components particularly in the whole wheat diet was significantly higher when diets were given to small pigs than when given to large pigs.


1973 ◽  
Vol 53 (2) ◽  
pp. 257-263 ◽  
Author(s):  
G. PELLETIER ◽  
E. DONEFER

Three yearling Cheviot × Suffolk ewes and three Columbia wethers were confined in metabolic cages and fed ad libitum fresh and dried marrow-stem kale (Brassica oleracea var. acephala D.C.) harvested in mid- and late October. Chemical analyses of the forages indicated no marked effects on any of the plant constituents due to drying or advancing maturity. Digestibility measurements demonstrated that marrow-stem kale (MSK) was a highly digestible material with an average dry matter digestibility of 78%. The fresh forages had higher (P < 0.05) dry matter and gross energy digestibility values than the dried form. Dry matter digestibility coefficients were higher (P < 0.05) for late October as compared with the earlier harvest. A trend toward higher (P > 0.05) voluntary intake values due to drying maturity was observed with an average relative intake of 80%. The nutritive value index averaged 65, thus indicating a digestible energy intake similar to a high-quality (legume) forage.


Author(s):  
Thomas LAUWERS ◽  
Jo VICCA ◽  
Joos LATRE ◽  
Didier HUYGENS ◽  
Dirk LIPS

Fodder beets (Beta vulgaris L.) are especially respected for their high feeding value and high netto-energy yield per hectare. The price per nutritive value is lowest as compared to other forages. Preservation of fodders beets demands thorough cleaning without damaging and regularly occurs as a whole in well closed piles. In addition, feeding them to the animals is labour demanding. These disadvantages enforce the research towards other preservation methods which may be able to valorise this valuable type of roughage. The preservation of fodder beets in silages using silo bags, either separately or in combination with maize was investigated. Fodder beets were harvested and ensilaged at the ideal moment of maize harvest (October) or fodder beets were harvested at the ideal moment for fodder beet harvest (November) and consequently ensilaged with previously ensilaged maize. Highest energy yields of the silages were recorded at optimal harvest time for fodder beets. Ensilaging fodder beets separately resulted in large energy losses due to effluent and dry matter losses. Using lab scale silage, possible solutions for these large losses were investigated. Addition of 10% maize did reduce the effluent losses but dry matter losses remained at a high level. Addition of 4,5 l propionic acid per ton beets reduced effluent and dry matter losses sufficiently. Ensilaging foliage was another point of interest. This appeared to result in a lowered energy yield at organic and dry matter basis, an increased amount of ashes and doubling of the iron (Fe) concentration


1978 ◽  
Vol 58 (3) ◽  
pp. 829-841 ◽  
Author(s):  
A. JABBAR MUZTAR ◽  
S. J. SLINGER ◽  
J. H. BURTON

Chemical analyses were conducted on unwashed samples of four aquatic plant species harvested at three progressive dates during 1974. All species showed an extremely high ash content. The ash content increased in Potamogeton spp. with progress in the harvesting time and varied only slightly in Cladophora glomerata. Myriophyllum spicatum and Vallisneria americana, harvested in September, were second growth, which was reflected in the much lower ash and considerably higher organic nutrient levels. The neutral-detergent fiber (NDF) level tended to be higher in all species for samples harvested in September. Acid-detergent fiber (ADF) was also higher during the same month except in Potamogeton spp. With the exception of Potamogeton spp., the level of acid-detergent lignin (ADL) was similar in all species at the different dates. Both NDF and ADF values were inflated because of unavoidable contamination with mineral matter. A further experiment with washed and unwashed plant samples harvested the following year showed that washing decreased the ash content markedly, in most cases with a concomitant increase in proximate constituents and gross energy values. All species, either washed or unwashed, were very low in dry matter (5–20%); the NDF and ADF levels for most plants were similar to those of alfalfa, while ADL content was relatively low. Results indicated that aquatic macrophytes would have nutritive value similar to alfalfa; however, their high ash and low dry matter contents would necessitate quality control and additional processing for possible use as feedstuffs.


1991 ◽  
Vol 71 (1) ◽  
pp. 107-114 ◽  
Author(s):  
Z. Mir ◽  
S. Bittman ◽  
L. Townley-Smith

Two trials were conducted to evaluate the voluntary intake and digestibility of kochia (Kochia scoparia) as hay or silage for sheep. In Trial 1, kochia (KOC) hay substituted for alfalfa hay (AA) at 0, 25, 50 or 75% of complete diets, or 50% AA or 50% KOC with barley (BAR) were fed to 24 mature wethers in a completely randomized design experiment. As the level of KOC in the diet increased, dry matter intake (DMI) of wethers decreased linearly. There were no differences (P > 0.05) in dry matter or fiber digestibilities among the four diets containing AA and KOC hay. Nitrogen and gross energy digestibilities increased linearly (P < 0.05) with decreasing levels of dietary KOC. In trial 2, KOC silage prepared from two ecotypes of KOC (southern and northern), cut at two different dates and fed in a 50:50 combination with AA silage were compared with a diet containing AA silage. DMI and nutrient digestibilities of the AA silage diet were higher (P < 0.05) than those for the diets containing KOC. Results indicate that KOC hay can be fed in high forage or concentrate diets at levels between 25 and 50% of the diet without adverse effects on intake or digestibility. Results also demonstrate that KOC can be preserved by ensiling and that KOC silage can be used in combination with AA silage in diets for sheep. Key words: Kochia, sheep, digestibility, hay, silage


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