EFFECTS OF FEEDING MILK REPLACERS CONTAINING LOW-ERUCIC ACID RAPESEED OIL ON GROWTH, NUTRIENT DIGESTIBILITY, MEAT QUALITY AND HISTOLOGICAL CHANGES IN TISSUES OF VEAL CALVES

1978 ◽  
Vol 58 (3) ◽  
pp. 465-470 ◽  
Author(s):  
J. R. SEOANE ◽  
A. D. L. GORRILL ◽  
J. W. G. NICHOLSON ◽  
E. LARMOND ◽  
R. G. STEVENSON
Keyword(s):  
Erucic Acid ◽  
Feed Efficiency ◽  
Rapeseed Oil ◽  
Nitrogen Retention ◽  
Nutrient Digestibility ◽  
Long Term Effects ◽  
Veal Calves ◽  
Low Erucic Acid ◽  
Dietary Treatments ◽  
Milk Replacers

Sixteen Holstein bull calves were used during 62–82 days to study the long-term effects of substituting 0, 25, 50 and 75% of the animal fat (tallow) with low-erucic acid rapeseed oil (Span) in milk replacers for veal calves. Growth rates and feed efficiency were affected by the dietary treatments. The highest level of substitution (75%) did not affect the digestibility of the energy or the dry matter, but did decrease average daily gains, feed efficiency and the apparent digestibility of dietary nitrogen (P < 0.05). Nitrogen retention and utilization were not affected by the dietary treatments. The histological analyses of various internal organs did not reveal any treatment effects. The evaluation of carcass quality showed no differences in flavor but there was a non-linear decrease in tenderness of the meat with increasing levels of rapeseed oil in the diets. The 75% level of substitution resulted in tougher meat than the 25% level treatment.

LOW-GLUCOSINOLATE, LOW-ERUCIC ACID FULL-FAT RAPESEED (CV. TOWER) AS A PROTEIN AND ENERGY SOURCE IN LAMB MILK REPLACERS

1976 ◽  
Vol 56 (3) ◽  
pp. 393-400
Author(s):  
J. R. SEOANE ◽  
A. D. L. GORRILL ◽  
L. CRAMPTON ◽  
J. W. G. NICHOLSON ◽  
J. D. JONES ◽  
...  
Keyword(s):  
Erucic Acid ◽  
Dry Matter ◽  
Milk Protein ◽  
Detrimental Effect ◽  
Average Daily Gain ◽  
Cholesterol Levels ◽  
Low Erucic Acid ◽  
Dietary Treatments ◽  
Milk Replacers ◽  
Daily Gain

Dehulled, low-erucic acid–low-glucosinolate, full-fat rapeseed (FFRS), was studied as a protein source in milk replacers for lambs. Before being incorporated into the milk replacers to provide 25% (FFRS-25) or 50% (FFRS-50) of the total dietary protein, the FFRS was either passed through a colloid mill (milled) or left unmilled. When compared with an all-milk protein diet (FFRS-0), inclusion of the unmilled FFRS decreased the digestibilities of dry matter, nitrogen and energy (P < 0.01). Addition of unmilled FFRS to the milk replacer also decreased N retention (P < 0.01), but did not affect average daily gain. Addition of the milled FFRS to the milk replacers resulted in higher digestibilities of dry matter, nitrogen and energy and better retention of nitrogen than when the unmilled FFRS was added. However, the colloid-milled FFRS diet still was not as highly digestible as the all-milk diet. Increasing the level of substitution with milled FFRS from 25 to 50% produced a further decrease of about 4 units in the digestion coefficients and of 9 units in the retention of nitrogen expressed as a percent of the intake. Serum cholesterol levels just prior to and 2 h after feeding were not affected by the dietary treatments. Histology of liver biopsy samples taken at 22 days of age and of hearts and livers at market weight showed no detrimental effect on these organs from feeding low-erucic acid, low-glucosinolate FFRS to lambs. Based on growth trials it is concluded that low-erucic acid, low-glucosinolate FFRS, after colloid milling, can replace from 25 to 50% of the milk protein and most of the fat in lamb milk replacers without significantly affecting animal performance.

NUTRIENT DIGESTION AND NITROGEN RETENTION BY LAMBS FED MILK REPLACERS CONTAINING SOLVENT-EXTRACTED OR FULL-FAT PRODUCTS FROM DIFFERENT RAPESEED CULTIVARS

1976 ◽  
Vol 56 (3) ◽  
pp. 401-408 ◽  
Author(s):  
A. D. L. GORRILL ◽  
J. R. SEOANE ◽  
J. W. G. NICHOLSON ◽  
J. D. JONES
Keyword(s):  
Erucic Acid ◽  
Dietary Protein ◽  
Dry Matter ◽  
Nutritive Value ◽  
Nitrogen Retention ◽  
Protein Concentrate ◽  
Good Source ◽  
Heated Water ◽  
Low Erucic Acid ◽  
Milk Replacers

Bronowski, Oro and Tower rapeseed were dehulled, heated, and water- and solvent-extracted to produce a protein concentrate (RPC) or only dehulled, heated and water-extracted to produce a full-fat rapeseed material (FFRS). These materials were added to lamb milk replacers to provide up to 50% of the dietary protein. RPC materials from the three cultivars were highly digestible (89% or more of dry matter) and produced similar values for nitrogen retention (60% of intake) by lambs. The FFRS materials were poorly digested (79% of dry matter or less) and generally decreased lamb performance. When the FFRS was passed through a colloid mill, digestibility values and retention of nitrogen increased to values equivalent to those obtained with RPC. Homogenization of the colloid-milled FFRS did not further improve its nutritive value for preruminant lambs. Thus, low-glucosinolate, low-erucic acid rapeseed which has been dehulled, heated, water-extracted and colloid-milled is a good source of protein and energy for lamb milk replacers.

RESPONSE OF CHICKS TO THE FEEDING OF DIFFERENT RAPESEED OILS AND RAPESEED OIL FRACTIONS

1977 ◽  
Vol 57 (1) ◽  
pp. 137-140 ◽  
Author(s):  
B. E. MARCH
Keyword(s):  
Growth Rate ◽  
Erucic Acid ◽  
Growth Rates ◽  
Feed Efficiency ◽  
Rapeseed Oil ◽  
Mineral Content ◽  
Corn Oil ◽  
Feed Utilization ◽  
Oil Fractions ◽  
Low Erucic Acid

Growth rates of chicks and efficiency of feed utilization were similar when the diet contained 4% of either rapeseed oil or corn oil in one experiment and when the diet contained 10% of either rapeseed oil or soybean oil in a second experiment. Gums from high or low erucic acid rapeseed at dietary levels of 4–5% resulted in growth rates and feed efficiency similar to those obtained with the oils. Acidulated soapstock and non-acidulated soapstock from high and low erucic acid rapeseed, fed in comparison with oils, gave favorable results for growth rate. The non-acidulated soapstocks, probably as a result of their 6% mineral content, reduced feed efficiency slightly. There was no mortality attributable to any of the oils or oil fractions.

LOW- AND HIGH-GLUCOSINOLATE RAPESEED FLOURS AND RAPESEED OIL IN MILK REPLACERS FOR CALVES: THEIR EFFECTS ON GROWTH, NUTRIENT DIGESTION AND NITROGEN RETENTION

1976 ◽  
Vol 56 (3) ◽  
pp. 409-416 ◽  
Author(s):  
A. D. L. GORRILL ◽  
J. W. G. NICHOLSON ◽  
J. D. JONES
Keyword(s):  
Rapeseed Oil ◽  
Milk Protein ◽  
Nitrogen Retention ◽  
Rapeseed Meal ◽  
Milk Replacer ◽  
Bull Calves ◽  
Calf Performance ◽  
Protein Milk ◽  
Low Erucic Acid ◽  
Milk Replacers

Calf milk replacers were formulated to contain up to 50% of the total nitrogen from dehulled rapeseed meal (RF), or up to 60% from dehulled, heated, water- and solvent-extracted Bronowski rapeseed protein concentrate (RPC). Apparent digestion coefficients of RF were less than for RPC or all-milk protein diets. Nitrogen digestibilities of the diets were 86, 80, 78 and 72%, respectively, when high-glucosinolate RF supplied 0, 12.5, 25 or 50% of the nitrogen (P < 0.01). When low-glucosinolate RF supplied 50% of the nitrogen, the calves digested 79% of the total diet nitrogen compared with 73.8% when high-glucosinolate RF was used. The inclusion of 5 or 10% low-erucic acid rapeseed oil to replace an equivalent weight of tallow in the high-glucosinolate RF diet increased the digestion coefficients to values nearly equal to those for the same level of nitrogen from low-glucosinolate RF. Milk replacer containing 60% of the protein from RPC reduced (P < 0.05) apparent nitrogen digestion and retention by bull calves and growth of heifer calves to weaning compared with an all-milk protein milk replacer. However, growth of heifer calves to 15 or 26 wk of age was equal for both milk replacers. The use of RPC to supply 30% of the protein in the milk replacer had no significant effects on calf performance before or after weaning.

The effect of enzyme supplementation of a wheat/barley-based starter diet on nutrient faecal digestibility in early weaned piglets

1991 ◽  
Vol 1991 ◽  
pp. 23-23 ◽  
Author(s):  
Johan Inborr ◽  
Hadden Graham
Keyword(s):  
Soybean Meal ◽  
Nitrogen Retention ◽  
Nutrient Digestibility ◽  
Weaned Piglets ◽  
Enzyme Product ◽  
Enzyme Supplementation ◽  
Dietary Treatments

The objectives of this experiment were to investigate the effect of adding a multi-enzyme product to a diet based on wheat, barley and soybean meal on faecal nutrient digestibility and nitrogen retention in early-weaned piglets.A total of 36 pigs, weaned between 21 and 25 days of age, were assigned on weight and litter origin basis to two dietary treatments and placed in flat-deck pens of 6 pigs each. The design of the pens allowed total collection of urine and faeces separately.

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.

THE INFLUENCE OF HIGH AND LOW ERUCIC ACID RAPESEED OILS ON THE PRODUCTIVE PERFORMANCE OF LAYING HENS AND ON THE LIPID FRACTION OF EGG YOLK

1974 ◽  
Vol 54 (3) ◽  
pp. 403-410 ◽  
Author(s):  
H. VOGTMANN ◽  
D. R. CLANDININ ◽  
R. T. HARDIN
Keyword(s):  
Fatty Acids ◽  
Fatty Acid ◽  
Soybean Oil ◽  
Erucic Acid ◽  
Rapeseed Oil ◽  
Fatty Acid Content ◽  
Egg Yolk ◽  
Productive Performance ◽  
Egg Weight ◽  
Low Erucic Acid

The effects of including 5 or 15% of high (regular) and low (Span) erucic acid rapeseed oils or soybean oil on productive performance, total lipid and fatty acid content of egg yolk, and distribution of fatty acids in egg yolk fat were studied. Feed intake varied according to the dietary energy content. However, 15% high erucic acid rapeseed oil decreased feed intake and egg production in comparison with 15% low erucic acid rapeseed oil or soybean oil. Hens receiving rations containing soybean oil produced larger eggs in the treatment than in the pre-treatment period. Five percent regular rapeseed oil in the diet led to a small increase in egg weight, whereas inclusion of 15% regular rapeseed oil in the diet led to a decrease in egg weight. Diets containing the Span oil gave intermediate results. Although the total lipid and total fatty acid content in egg yolk remained constant, the fatty acid composition changed significantly with the experimental diets. The concentration of saturated fatty acids in eggs produced by hens fed diets containing the regular rapeseed oil or low erucic acid rapeseed oil (Span oil) decreased only to a small extent and not in proportion to the amount of these fatty acids present in the diets; but the oleic acid concentration in eggs produced by the hens fed diets containing the rapeseed oil was high. Only 0.2% of erucic acid was found in eggs when 15% regular rapeseed oil was fed to laying hens. The laying hen seems to be able to maintain the level of saturated and monounsaturated fatty acids in yolk lipids in a physiological range. The results indicate that in the laying hen, a partial degradation of erucic acid to gadoleic acid and oleic acid takes place.

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