Effect of Four Levels of Added Fat on Broiler Breeder Performance

Brake, J.

doi:10.3382/ps.0691659

Cited by 19 publications

(11 citation statements)

References 12 publications

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“…The lack of an effect of dietary energy allotment on fertility and hatchability, expressed either on the basis of all eggs set or of fertile eggs, is in agreement in part with the results of Brake (1990), who showed that increasing energy allotment had no influence on hatchability. However, he showed an improvement in fertility by addition of 4% fat to the diet.…”

Section: Discussionsupporting

confidence: 88%

“…They noted, however, that egg specific gravity was improved when hens were fed 16 or 24% less than the standard feeding regimen. In contrast to current findings, McDaniel et al (1981) and Brake (1990) found that increasing feed and energy intakes had negative influences on eggshell quality. Our results did not support their findings and indicated that dietary energy allotment had no influence on EW, SW, PS, or SWUSA.…”

Section: Discussioncontrasting

confidence: 83%

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Daily Energy Allotments and Performance of Broiler Breeders.

Attia¹,

Burke

Yamani

et al. 1995

Poultry Science

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Arbor Acres broiler breeder hens, 21 to 61 wk of age, were given the daily ME level recommended by the primary breeder for their age and level of production (100% AA) or were given 94 or 88% of that amount. The reduction in daily energy allotment had no effect on age at 50% or age at peak production, but there was a highly significant linear decrease in the eggs per hen from 165 +/- 2.8 in hens given 100% AA to 149 +/- 3.2 and 141 +/- 3.8 in hens given 94 and 88% AA. The percentage of nonlaying hens between 44 and 60 wk of age was substantially increased as daily energy allotment was reduced. The percentage settable eggs was significantly lower in the 100% AA group, but no differences in fertility or hatchability were seen. Chicks per hen fell from 123 +/- 2.4 to 116 +/- 2.4 to 102 +/- 2.6 as energy allotment was progressively reduced. Dietary energy allotment had no effect on egg weight, shell weight, shell characteristics, or proportion of albumen and yolk. Chick weight was unaffected but chicks' liver weight increased with increasing dam energy intake. Percentage lipid in hens' carcasses increased with increasing energy intake and percentage protein and percentage ash decreased.

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Section: Discussionsupporting

confidence: 88%

Section: Discussioncontrasting

confidence: 83%

Daily Energy Allotments and Performance of Broiler Breeders.

Attia¹,

Burke

Yamani

et al. 1995

Poultry Science

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“…In this regard, fatty acids and especially linoleic acid (Brake 1990) and palmitic acid rather than oleic acid (Atteh and Leeson 1985) were observed to decrease eggshell quality, and this was attributed to formation of insoluble mineral soaps. However, Peebles et al (2000) revealed that shell quality of broiler breeder eggs was not affected by dietary fat type and level, while poultry fat increased shell quality compared to corn oil.…”

Section: Discussionmentioning

confidence: 92%

Improving productive and reproductive performance of dual-purpose crossbred hens in the tropics by lecithin supplementation

Attia

Hussein

El-Din

et al. 2008

Trop Anim Health Prod

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In order to study the influence of lecithin and vegetable oils on improving productive and reproductive performance, egg quality, and metabolic profile of dual-purpose crossbred hens in the tropics, a total of 224 hens, 47-wk old, 112 each of Gimmizah and Silver Montazah strains were fed seven isonitrogenous diets. Experimental treatments consisted of feeding seven different diets to layers; four isocaloric diets containing either no added lipid (control), 3% vegetable oil mixture, 3% soy lecithin or 6% soy lecithin; and three high-energy level diets, containing an extra 3% vegetable oil mixture, 3% or 6% soy lecithin added to the control diet. Thus, the experimental design was factorial, consisting of seven lipid treatments by two strains of hens. Results indicate that 3% lecithin as an extra ME source, or feeding 11.72 MJ ME/kg diet containing the same level of lecithin, improved productive and reproductive performance of crossbred hens. Moreover, lecithin at 6% as an extra ME supplement significantly increased yolk percentage and improved Haugh unit score and yolk color, while increasing EE digestibility and plasma total lipids. Hen strain had a significant effect only on digestibility of OM, percentage liver and Haugh unit score, with the Gimmizah strain having higher values.

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“…Fat supplementation of diets is recognized as a valuable and efficient method to meet the high-energy requirements of rapidly growing broilers and high egg-producing hens [2][3][4]. The addition of 2, 4, and 6 % poultry fat to broiler breeder diets, without increasing metabolizable energy intake, has been reported to improve egg production and feed conversion efficiency [5].…”

Section: Introductionmentioning

confidence: 99%

Dietary Supplementation of Organic Selenium Could Improve Performance, Antibody Response, and Yolk Oxidative Stability in Laying Hens Fed on Diets Containing Oxidized Fat

Laika

Jahanian

2015

Biol Trace Elem Res

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The present study was carried out to investigate the effect of dietary supplementation of organic selenium (Se) on performance, egg quality indices, and yolk oxidative stability in laying hens fed diets with different fat sources. A total of 270 Hy-line W-36 Leghorn hens of 47 weeks of age were randomly distributed into the 5 replicate cages of 9 dietary treatments. Experimental diets consisted of a 3 × 3 factorial arrangement of treatments with three different fat sources (soybean oil, SO; yellow grease, YG; and palm fat powder, PFP) and three different levels of supplemental Se (0, 0.2, and 0.4 mg/kg of diet) as supplied by zinc-L-selenomethionine (ZnSeMet) complex, which fed during a 77-day feeding trial including 7 days for adaptation and 70 days as the main recording period. Results showed that the highest (P < 0.05) egg weights assigned to the hens fed on SO-supplemented diets. Hen-day egg production was affected by both dietary fat source (P < 0.01) and Se level (P < 0.05) throughout the trial period. Regardless of dietary fat source, dietary supplementation of ZnSeMet improved (P < 0.05) egg mass during all trial periods. Moreover, the significant (P < 0.05) fat source× Se interactions were observed for egg mass, so that dietary supplementation with 0.4 mg/kg Se was more effective in diets supplemented with YG. Although feed intake was not affected by experimental diets during the first 35-day period, dietary inclusion of PFP reduced feed intake during both second 35-day (P < 0.01) and entire trial period (P < 0.05). The best (P < 0.01) feed conversion ratio during the first 35-day period was assigned to the birds fed on SO-diets, followed by those fed YG-diets. Dietary supplementation of ZnSeMet improved (P < 0.05) feed efficiency during the first 35-day period. Supplementation of ZnSeMet into the diets increased yolk index, with more impact in hens fed on YG-diets. The highest concentration of yolk malondialdehyde was observed in YG-fed groups, and ZnSeMet supplementation of diets decreased (P < 0.05) yolk malondialdehyde. The highest (P<0.01) glutathione peroxidase activity was observed for hens fed on diets supplemented by YG, followed by those on SO-diets. Although different fat sources had no effect on antibody titer against Newcastle disease virus, supplemental ZnSeMet improved (P < 0.05) antibody response. The present findings indicate that dietary supplementation of ZnSeMet could improve performance parameters and egg oxidative stability in laying hens, with the highest impact in diets containing oxidized (high peroxide values) fat sources.

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Effect of Four Levels of Added Fat on Broiler Breeder Performance

Cited by 19 publications

References 12 publications

Daily Energy Allotments and Performance of Broiler Breeders.

Daily Energy Allotments and Performance of Broiler Breeders.

Improving productive and reproductive performance of dual-purpose crossbred hens in the tropics by lecithin supplementation

Dietary Supplementation of Organic Selenium Could Improve Performance, Antibody Response, and Yolk Oxidative Stability in Laying Hens Fed on Diets Containing Oxidized Fat

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