Performance of Laying Hens Fed Diets Containing Soybean Gums, Rapeseed Gums or Rapeseed Meals With and Without Gums

Hulan, H. W.; Proudfoot, F. G.

doi:10.4141/cjas81-127

Cited by 6 publications

(4 citation statements)

References 8 publications

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“…In a study carried out by Hulan & Proudfoot (1981) with hens fed diets containing soybean gum, this byproduct did not significantly affect egg production, but significantly increased the amount of feed required to produce a dozen eggs. However, when egg size was taken into account (kilogram of feed per kilogram of eggs), this difference disappeared, i.e., hens fed diets containing soybean gum consumed more feed but maintained a production rate similar to that of the control hens.…”

Section: Resultsmentioning

confidence: 92%

“…In a study carried out by Hulan & Proudfoot (1981), hens fed diets containing soybean gum consumed more feed but maintained a production rate similar to that of the control hens; however, the addition of this by-product had no effect on the specific gravity and interior quality of eggs. Leeson et al (1977) reported that the inclusion of the gum had no effect on feed intake or egg production.…”

Section: Introductionmentioning

confidence: 93%

“…In poultry feed, its energy value and emulsifying characteristics have been explored (Attia et al, 2009;Borsatti et al, 2018); however, there is not enough information available to recommend its use in broiler chicken feed (Viñado et al, 2019). In the case of laying hens, the information is even more restricted, both regarding the incorporation of gum (Leeson et al, 1977;Hulan & Proudfoot, 1981) or raw lecithin in the feed (Mandalawi, 2015), mainly related to the quality of stored eggs. This is important since, as all products of animal origin, eggs are also perishable and begin to lose their internal quality after posture due to their high content of unsaturated fatty acids (Moura et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

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Use of soybean gum as an emulsifier in diets for commercial laying hens

Souza

Laurentiz

Faria

et al. 2019

Pesq. agropec. bras.

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The objective of this work was to evaluate the influence of the inclusion of soybean (Glycine max) gum in the diet of laying hens on egg production, egg external and internal quality, and economic viability, as well as of temperature and storage time on the oxidative stability of eggs. One hundred and eighty 40-week-old Lohmann-LSL layers were fed 0, 1, 2, 3, 4, and 5% soybean gum in the diet. In the economic analysis, the average productive performance of the layers and the cost of feed were considered. In order to evaluate oxidative stability, eggs were stored at room temperature (~30oC) or refrigerated (5oC) for 0, 7, and 21 days. The inclusion of soybean gum in the diet increased feed intake and also egg production, average weight, and mass. Soybean gum improved external and internal egg quality parameters, but reduced the Haugh unit. Oxidative stability was higher in eggs from hens fed 4% gum, at 5oC, for 21 days; however, the largest economic return was with 1% gum. The inclusion of soybean gum promotes improvements in the production, external and internal quality, and oxidative stability of eggs from commercial laying hens.

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Section: Resultsmentioning

confidence: 92%

Section: Introductionmentioning

confidence: 93%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Use of soybean gum as an emulsifier in diets for commercial laying hens

Souza

Laurentiz

Faria

et al. 2019

Pesq. agropec. bras.

View full text Add to dashboard Cite

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“…Statistical analysis of the data suggest that the incidence of these lesions is significantly correlated to the dietary level of 22:1. When rapeseed meal is fed to the SCWL chicken there is increased mortality from fatty liver syndrome (Jackson, 1969;Hulan and Proudfoot, 1981b). Pearson and Butler (1978) reported that sinusoidal distention is one of the most consistently observed features in birds with fatty liver syndrome.…”

Section: C Q Cmentioning

confidence: 99%

Growth, Heart Weight, Cardiac Lipid, and Pathology of Chickens Fed Soybean Oil or Oil Extracted from Different Rapeseed Cultivars

Hulan¹,

Corner²,

Nash³

et al. 1982

Poultry Science

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A total of 384 male Single Comb White Leghorn chicks of the Hyline strain were randomized in 24 Petersime battery units of 16 birds per unit. Four replicate pens were fed either a basal (control) diet containing no added oil or a diet supplemented with 20% by weight of either soybean oil or rapeseed oil (RSO) from cultivars Tower, Candle, Regular, or R-500. Levels of crucic acid (22:1) in the RSO's ranged from .1 to 51.6%. Four birds from each unit were killed at 4, 8, 12, and 16 weeks for cardiac lipid analysis and pathology. Feeding RSO had no consistent effect on body weights, heart weights, or the heart-to-body weight ratio. Only the diet containing R-500 (51.6% 22:1) consistently increased cardiac lipid levels as measured gravimetrically. Maximum deposition of the long-chain monoenes (22:1) and eicosenoic acids (20:1) occurred in the cardiac lipids by 8 weeks, and the levels remained high throughout the 16-week trial. The relative concentration of these long-chain monoenes in the cardiac lipids was positively correlated to the dietary levels of these acids. The incidence of lesions found in heart, liver, and skeletal muscle was significantly higher in chickens fed RSO's high in 22:1 than in chickens fed control or soybean oil, and the incidence significantly correlated to the level of 22:1 in the diet. The incidence of heart and muscle lesions and sinusoidal distention in chickens fed RSO's low in 22:1 was not significantly different from that of chickens fed the control diet or soybean oil, but the incidence of hepatic necrosis was significantly higher for chickens fed RSO's low in 22:1 compared to those fed the control diet or soybean oil.

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