Influence of Dietary Energy Source on Performance and Fatty Liver Syndrome in White Leghorn Laying Hens

Bragg, D. B.; Sim, J. S.; Hodgson, G. C.

doi:10.3382/ps.0520736

Cited by 25 publications

(10 citation statements)

References 13 publications

(8 reference statements)

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“…Within an 11 day period from 133 to 143 days of age pullets fed the low, medium and high energy diets laid 15, 21 and 25 eggs, respectively, while pullets fed low, medium and high fat diets laid 14, 18 and 29 eggs, respectively. The lack of an effect of fat level of the diets from 2 to 18 weeks of age on daily caloric intake (Table 5) is in agreement with the findings reported for laying hens fed diets varying in fat content from 1 to 8% by Donaldson and Gordon (1960) and Bragg et al (1973). The failure of the energy level of the rearing diets to affect live body weights (Table 6) is in agreement with our findings reported previously (Cunningham and Morrison, 1976) and those of Berg and Bearse (1958), Berg (1959) and Berg et al (1963).…”

Section: Resultssupporting

confidence: 91%

Dietary Energy and Fat Content as Factors in the Nutrition of Developing Egg Strain Pullets and Young Hens

Cunningham

Morrison

1977

Poultry Science

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Nine starting and rearing diets (three energy levels each with three fat levels) were fed to commercial White Leghorn chicks from hatch to 20 weeks of age. As noted in the earlier papers of this series, pullets fed the high energy rearing diets showed significant (P = 0.05) reductions in feed intake, however, average daily caloric intake was greater (P = 0.05) for pullets consuming the low energy rearing diets. Fat content of the diet had not influence on either daily feed (g.) or caloric (kcal.) intake. Energy content of the diets failed (P = 0.05) to affect parameters related to body growth and development, hepatic citrate-cleavage and "malic" enzyme activity and liver or body composition. Fat content of the diet depressed hepatic enzyme activity while no effect was noted on body weight, liver weight or body composition. The onset of sexual maturity altered lipid metabolism in the developing pullets. Significant (P = 0.05) energy level by fat level interactions were noted in only two of the 20 parameters studied in this experiment. In vitro assay of hepatic citrate-cleavage and "malic" enzyme activity proved to be of little value in predicting hepatic lipogenic activity and subsequent effects on liver and total body composition.

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Section: Resultssupporting

confidence: 91%

Dietary Energy and Fat Content as Factors in the Nutrition of Developing Egg Strain Pullets and Young Hens

Cunningham

Morrison

1977

Poultry Science

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“…Feeding of low fat diets is known to reduce egg weight [14][15][16][17][18][19]. The change in egg weight after fat feeding is dependent on the level of added fat [15] and on the nature of fat, i. e. fatty acid profile [16,18,19]. It was suggested by Whitehead et al [17] that the increase in egg weight after fat feeding is caused by an increase in weight of albumen which in turn is the result of a stimulated oviduct protein synthesis mediated by a fat feeding induced estrogen plasma elevation.…”

Section: Discussionmentioning

confidence: 99%

“…Higher crude protein content seemed to be especially beneficial for egg and albumen weight when either the low fat diet or the diet with the highest soy oil inclusion (14%) was fed. Feeding of low fat diets is known to reduce egg weight [14][15][16][17][18][19]. The change in egg weight after fat feeding is dependent on the level of added fat [15] and on the nature of fat, i. e. fatty acid profile [16,18,19].…”

Section: Discussionmentioning

confidence: 99%

Effect of soy oil supplementation and protein level in laying hen diets on praecaecal nutrient digestibility, performance, reproductive performance, fatty acid composition of yolk fat, and on other egg quality parameters

Dänicke¹,

Halle

Jeroch³

et al. 2000

Eur. J. Lipid Sci. Technol.

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An experiment was carried out with laying hens in the age of 22—45 weeks to examine the effects of added soy oil (0%, 3.5%, 7%, 10.5%, and 14%) and dietary protein level (13.2% and 16.3%) on laying and reproductive performance, fatty acid composition of yolk fat, and other egg quality parameters. Moreover, digestibility of nutrients and of energy was determined by using a marker technique. Laying intensity and feed intake were not influenced by dietary treatments whereas egg weight and daily egg mass production were significantly improved by soy oil addition in a non‐linear related manner. The feed conversion ratio reached a minimum at soy oil proportions between 3.5% and 10.5%. Reproductive performance in terms of fertilized eggs, hatchability, and mortality of chicks was not affected by dietary treatments. The increase of egg weights due to soy oil addition was accompanied by a simultaneous increase in the proportion of albumen and a decrease of yolk and shell percentage. Palmitic acid (C16:0) and oleic acid (C18:1) proportions in yolk fat decreased as soy oil addition was increased whereas the proportions of linoleic acid (C18:2 n‐6), linolenic acid (C18:3 n‐3), and docosahexaenoic acid (C22:6 n‐3) were increased at the same time. Praecaecal digestibility of crude fat and fatty acids of the diets were non‐linearly improved by soy oil addition. Digestibility of crude protein and amino acids were not affected by either protein content of the diet or by soy oil supplementation. In conclusion, a decrease in dietary protein content from 16.3% to 13.2% did not negatively influence performance of hens and egg quality under the experimental conditions applied. Soy oil addition improved egg quality.

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“…Numerous studies have reported that poultry, which received diets containing oil showed a better growth and laying performance (Joshi and Sell 1964;Bragg et al 1973;de Witt et al 2009). Moreover, in laying hens farming in China, 3-4% canola oil or soybean oil (SO) is commonly included in the daily feed.…”

Section: Introductionmentioning

confidence: 98%

Effect of different fat sources in parental diets on growth performance, villus morphology, digestive enzymes and colorectal microbiota in pigeon squabs

Xie

Wang

et al. 2013

Archives of Animal Nutrition

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The influence of different fat sources in pigeon diets on performance, gut morphology, digestive enzymes and colorectal microbiota of their squabs was investigated from hatching to 28 days of age. Parent White King pigeons (240 males and 240 females) were randomly assigned to four dietary treatments, each including six replications of 10 pairs (one pair per cage). Four hundred eighty newly hatched squabs were randomly allocated, and two squabs were raised by a pair of parent pigeons. Pigeons were fed a basal diet supplemented with 6% lard oil (LO), palm oil (PO), soybean oil (SO) or fish oil (FO), respectively. After four weeks of experimental feeding, FO inclusion caused the lowest body weight gain of squabs and the highest lipase activity in the jejunum content. Compared with other treatments, Group SO showed a greater villus height and duodenal surface area in squabs. In Group PO the alkaline phosphatase activity in duodenal mucosa of squabs was decreased, while in Group LO the alkaline phosphatase activity in the jejunal mucosa was highest. The leucine aminopeptidase (LAP) activity in the duodenal, jejunal and ileal mucosa of squabs was highest in Group SO. In the colorectal content of squabs, in Group LO the highest percentages of microbiota of the enteric group (Clostridium, Bifidobacterium, Coriobacterium and Bacteroides-Porphyromonas-Prevotella) were induced. Because supplementation of SO has beneficial effects on gut development and digestive function at comparable growth performance, it is probably a better choice for oil supplementation in parental pigeon diets.

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Influence of Dietary Energy Source on Performance and Fatty Liver Syndrome in White Leghorn Laying Hens

Cited by 25 publications

References 13 publications

Dietary Energy and Fat Content as Factors in the Nutrition of Developing Egg Strain Pullets and Young Hens

Dietary Energy and Fat Content as Factors in the Nutrition of Developing Egg Strain Pullets and Young Hens

Effect of soy oil supplementation and protein level in laying hen diets on praecaecal nutrient digestibility, performance, reproductive performance, fatty acid composition of yolk fat, and on other egg quality parameters

Effect of different fat sources in parental diets on growth performance, villus morphology, digestive enzymes and colorectal microbiota in pigeon squabs

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