An evaluation of low-energy feedstuffs in diets for laying hens

Stilborn, H. L.; Waldroup, P. W.

doi:10.1016/0377-8401(90)90147-z

Cited by 3 publications

(2 citation statements)

References 23 publications

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“…In addition, shell thickness significantly increased in eggs laid by hens fed diet with 2800 kcal/kg ME, 0.40% M and supplemented with 20 mg FA/kg as compared to other treatments (Table 4). These findings agree with those reported by Omara et al (2009) and Stilborn and Waldroup (1990), who reported that dietary energy level did not significantly influenced Haugh units values. Haugh units were not influenced significantly by energy and folic acid levels up to 3000 kcal ME/kg and 6 mg/kg, respectively, but influenced by M level up to 0.50% and the effect of interaction among ME, M and FA on Haugh unit was significant (El-Husseiny et al 2005).…”

Section: Egg Qualitysupporting

confidence: 93%

“…Lower dietary energy levels tended to reduce body weight gain when hens fed diets containing a wide range of ME (2500, 2600, 2700 and 2800 kcal ME/kg). This may be attributed to less available energy for fat deposition when lower dietary ME levels are utilized resulting in reducing the amount of weight gain that occurs during the laying period (Stilborn and Waldroup, 1990). Balnave and Robinson (2000) observed that body weight gain of laying hens increased with increasing dietary ME level (2500, 2700 and 2900 kcal ME/kg) in the diet, and concluded that this result may be due to the fact that abdominal fat pad weight (as a proportion of body weight) at termination of the trial was lower for the low ME diet than for the other diets.…”

Section: Productive Performance: Body Weight and Body Weight Changementioning

confidence: 99%

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Effect of Dietary Folic Acid Supplementation to Diets of Low Levels of Energy and Methionine of Developed Laying Hens in Summer Season on Performance, Physiological Status and Immune Response

Nofal¹,

Samak²,

Alderey³

et al. 2018

Journal of Animal and Poultry Production

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The objective of this study was to evaluate the effect of different levels of folic acid (FA) supplementation on productive and physiological performance and immune response of laying hens fed diets varying in methionine (M) and metabolizable energy (ME) levels. A total number of two hundred and sixteen of Silver Montazah laying hens (28 weeks old), were randomly divided into 12 treatment groups (18 hens / each). All birds were housed in individual cages. The experimental design was conducted in 2 x 2 x 3 factorial arrangement of treatments, 2 levels of ME (2800 and 2600 Kcal/Kg diet), two levels of DL-methionine (0.40% and 0.30%) and three levels of folic acid (0.0, 10, and 20 mg /kg feed). The results can be summarized as follows:-Increasing ME significantly increased final body weight (P≤0.01), shell thickness (P≤0.01), plasma total protein, globulin, glucose, cholesterol, triglycerides, egg folate content and hatchability of total fertile eggs while, daily feed intake and feed conversion ratio (FCR) were decreased. -Methionine at a level of 0.40% in the diet increased significantly egg number, albumin%, plasma total protein, globulin and HDL. On the other hand daily feed intake, FCR, shell%, egg shape index% and egg specific gravity were significantly decreased.-Significant increases were observed in egg number, shell thickness, plasma total protein, globulin and egg folate content due to increasing FA supplementation in the diet while, Haugh units, plasma albumin and plasma folate recorded significantly their lowest values.-Feeding hens diet with ME of 2800 kcal/kg and a level of 0.40% M without FA supplementation significantly increased albumen % and plasma triglycerides. In this respect, FA supplementation at a level of 10 mg/kg diet significantly increased plasma HDL. On the other side, FA supplementation at a level of 20 mg/kg diet significantly increased body weight change, daily egg mass, shell thickness, plasma total protein, albumin, globulin and significantly improved hatchability of fertile eggs. In addition, antibody titre against NDV recorded the highest value with insignificant difference as compared to other treatments.-Hens fed diet with 2600 kcal/kg ME and a level of 0.30% M without FA supplementation laid eggs with the highest mean of specific gravity while increasing FA to 10 mg/kg decreased plasma HDL. Increasing the supplementation level of FA in the diet significantly increased daily feed intake while, plasma triglycerides was significantly decreased.-A significant increase was observed in Haugh units attributed to feeding hens diet of ME at level of 2600 kcal/kg and 0.40% M without FA supplementation.

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Section: Egg Qualitysupporting

confidence: 93%

Section: Productive Performance: Body Weight and Body Weight Changementioning

confidence: 99%

Effect of Dietary Folic Acid Supplementation to Diets of Low Levels of Energy and Methionine of Developed Laying Hens in Summer Season on Performance, Physiological Status and Immune Response

Nofal¹,

Samak²,

Alderey³

et al. 2018

Journal of Animal and Poultry Production

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Blend of oil palm slurry and rice bran as feed ingredient for broiler chickens

Atuahene

Donkoh

Ntim

2000

Animal Feed Science and Technology

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Effects of wheat cultivar, metabolizable energy level, and xylanase supplementation to laying hens diet on performance, egg quality traits, and selected blood parameters

Mirzaee

Torki

Habibian

2014

Span. j. agric. res.

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A 2 x 2 x 2 factorial arrangement of treatments was conducted to evaluate the effects of two dietary apparent metabolizable energy (AME) levels (2,720 and 2,580 kcal kg-1 diet) and enzyme (0 and 0.3 g kg-1 diet, Grindazym® GP 15,000 with mostly xylanase activity) supplementation on the performance of laying hens fed diets based on two wheat cultivars (Marvdasht and Sardari). Experimental diets were formulated to have a constant energy to protein ratio and were fed to 65-wk-old Lohmann LSL-Lite laying hens for 7 wk. The lower level of AME reduced egg production and egg mass (p<0.05) and increased feed conversion ratio (p<0.05). Enzyme addition increased feed intake of the birds fed a diet with Sardari cultivar (p<0.05) but had no effect on feed intake of the birds fed a diet with Marvdasht cultivar (p>0.05). Nevertheless, birds receiving diets based on Marvdasht cultivar had higher feed intake and egg mass than that of those receiving diets based on Sardari cultivar (p<0.05). The birds fed diets based on Marvdasht cultivar produced less undesired eggs and had better yolk color as compared with the birds fed diets based on Sardari cultivar (p<0.05). The serum concentration of glucose increased by enzyme supplementation when birds receiving lower AME level (p<0.05). These results indicate that enzyme supplementation may have a positive effect on the feed intake of laying hens when fed on wheat-based diets; however, this effect is cultivar dependent and does not necessarily mean that enzyme supplementation always benefit production.

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An evaluation of low-energy feedstuffs in diets for laying hens

Cited by 3 publications

References 23 publications

Effect of Dietary Folic Acid Supplementation to Diets of Low Levels of Energy and Methionine of Developed Laying Hens in Summer Season on Performance, Physiological Status and Immune Response

Effect of Dietary Folic Acid Supplementation to Diets of Low Levels of Energy and Methionine of Developed Laying Hens in Summer Season on Performance, Physiological Status and Immune Response

Blend of oil palm slurry and rice bran as feed ingredient for broiler chickens

Effects of wheat cultivar, metabolizable energy level, and xylanase supplementation to laying hens diet on performance, egg quality traits, and selected blood parameters

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