Performance of Red × Rock Sex-Linked Hens Subjected to Restricted Feeding During the Laying Period

Gerry, R. W.; Muir, F. V.

doi:10.3382/ps.0551941

Cited by 11 publications

(18 citation statements)

References 8 publications

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“…Results shown here and those of Gerry and Muir (1976) and Okonkwo et al (1994) suggest that this may be true. In data shown here, BW, egg production, and egg-mass production were reduced in direct proportion to the feed restriction, while egg weight was reduced to a lesser degree.…”

Section: Discussionsupporting

confidence: 70%

“…Most reports of feed restriction for layers after the eggproduction peak describe a reduction in BW and egg weight (Snetsinger et al 1974;Gerry and Muir 1976;Kuney and Enos 1980;Matsoukas et al 1980;Cunningham and Polte 1984;Cerniglia et al 1984). A reduction in BW might result in increased feed efficiency, and a reduction in egg weight could improve the economic efficiency.…”

Section: Discussionmentioning

confidence: 99%

“…However, it can result in increased economic efficiency (Cunnigham and Polte 1984) in at least three ways. Feed efficiency may be improved (Snetsinger et al 1973;Gerry and Muir 1976;Kari et al 1977), as a greater proportion of the nutrient intake is used for egg production. Mortality may be reduced (Singsen et al 1958;Snetsinger et al 1973), especially for heavy strains.…”

Section: Mots Clésmentioning

confidence: 99%

“…Restriction before the peak of egg production may reduce the BW to less than the ideal for maximum egg production (Summers and Robinson 1995). Restriction after the production peak has been the subject of much scientific and commercial interest.Experimental feed restriction has been carried out by limiting time of access to feeders (Snetsinger et al 1973;Kuney and Enos 1980;Cerniglia et al 1984), restricting the amount of feed (Snetsinger et al 1973;Gerry and Muir 1976;Kari et al 1977;Matsoukas et al 1980; Cunnigham and Polte 1984;Okonkwo et al 1994), and restricting the energy in the feed (Snetsinger et al 1974). In most cases restriction has been accompanied by a decrease in egg production, egg weight, egg mass, or one or more of these, depending on the strain of bird and the level of restriction.…”

mentioning

confidence: 99%

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Effect of feed form, formulation, and restriction on the performance of laying hens

Scott¹,

Silversides²,

Tietge³

et al. 1999

Can. J. Anim. Sci.

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Swift, M. L. 1999. Effect of feed form, formulation, and restriction on the performance of laying hens. Can. J. Anim. Sci. 79: 171-178. A laying trial was performed with 1440 DeKalb ® hens caged at 18 wk of age to test the effect of feed form (expanded pellets or mash) and type of formulation (for crude protein [CP] or for specific amino acids [AA]), and five levels of feed restriction applied at either 24 wk or 32 wk of age. Formulation for CP rather than AA content resulted in 4.4% greater egg production and 7.1% greater production of egg mass in hens fed mash and 4.0% better feed efficiency in hens fed both mash and pellets. Hens fed mash had 2.3% higher feed consumption, suggesting that the hens may prefer mash. Feed restriction reduced body weight and hen-day egg production proportionate to the restriction level, but egg weight was reduced only slightly. These data suggest that care should be exercised in formulating for AA content rather than for CP, especially if feed intake is reduced. This strain of hens was very successful at regulating its feed intake for maximum production, and even a slight feed restriction produced a negative effect on production.Key words: Laying hens, feed restriction, feed form, feed formulation, protein level Scott, T. A., Silversides, F. G., Tietge, D. et Swift, M. L. 1999. L'effet de la forme, la formulation, et la restriction de l'aliment sur la performance des poules pondeuses. Can. J. Anim. Sci. 79: 171-178. Un essai de ponte a été realizé en utilisant 1440 poules DeKalb ® mises en cage à 18 semaines d'âge pour vérifier l'effet de la forme de l'aliment (agglomérée ou farine), le type de formulation (pour protéine brute ou pour des acides aminés spécifiques), et cinq niveaux de restriction alimentaire appliqués à 24 ou 32 semaines d'âge. La formulation pour la protéine brute en lieu de celle pour des acides aminés a produite une production d'oeufs 4,4% plus elevée et de masse d'oeuf 7,1% plus elevées pour les poules alimentées avec la moulée de forme farine et une efficacité alimentaire meilleur de 4,0% pour les poules alimentées avec les deux formes. Les poules alimentées avec la moulée de forme farine ont consumé 2,3% plus, suggérant ainsi une préférence. La restriction alimentaire a réduit le poids corporel et la production d'oeufs par jour en relation directe avec le niveau de restriction, mais le poids de l'oeuf a été reduit moins. Ces données suggèrent qu'il faut faire attention avec la formulation pour les acides aminés surtout avec une consommation reduite d'aliment. Cette souche de poule a réussi trés bien de régler sa consommation pour une production maximale et même une restriction légère a produit un effet negatif sur la production. Mots clés:Poules pondeuses, restriction alimentaire, forme de l'aliment, formulation d'aliments, niveau de protéine Laying hens are much better than broilers at controlling their feed intake, but feed restriction can be used during rearing to control mature BW and reduce feed costs (Gous and Stielau 1976;Summers and Robinson 1995)....

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Section: Discussionsupporting

confidence: 70%

Section: Discussionmentioning

confidence: 99%

Section: Mots Clésmentioning

confidence: 99%

mentioning

confidence: 99%

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Effect of feed form, formulation, and restriction on the performance of laying hens

Scott¹,

Silversides²,

Tietge³

et al. 1999

Can. J. Anim. Sci.

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“…per bird without a concomitant reduction in egg numbers. Gerry and Muir (1976) restricted hens starting at 22 and 32 weeks of age to 95, 90, and 85% of the amount of feed consumed by a full-fed control and evaluated egg returns over feed costs using 10 average egg price values and a feed cost of 13cVkg. Profit potential varied with the amount of restriction and the average egg price used; however, low egg prices tended to favor feed restriction for maximum returns.…”

Section: Introductionmentioning

confidence: 99%

A Comparison of Controlled Feeding Programs for Maximizing Returns of White Leghorn Layers

Cunningham

1984

Poultry Science

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Three controlled feeding programs initiated after peak egg production and a full feeding program were evaluated for their effects on production and income performance of White Leghorn layers. Program 1 consisted of full feeding from 20 to 64 weeks of age. Controlled feeding programs were initiated at 36 weeks and consisted of feeding approximately 105 g/bird/day to 64 weeks (Program 2), a phase reduction feeding program consisting of feeding approximately 105 g/bird/day to 53 weeks of age followed by feeding approximately 95 g/bird/day to 64 weeks (Program 3), and feeding approximately 95 g/bird/day continuously from 36 weeks (Program 4). Controlled feeding programs resulted in significant (P less than .05) reductions in total feed usage compared to full fed birds. Eggs per hen, however, were significantly (P less than .05) reduced only for feeding Programs 3 and 4, and egg weights were reduced only with feeding Program 4. Egg mass production and body weights were significantly affected by controlled feeding programs. Egg grade distributions were not significantly (P greater than .05) different among Programs 1, 2, or 3; however, Program 4 produced a significant (P less than .05) increase in the percentage of medium grade eggs obtained. Egg incomes over pullet and feed costs favored all controlled feeding programs, demonstrating that maximum production levels do not always mean maximum returns.

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Effects of feed restriction on egg production and egg quality of exotic chickens during their second year of production in a Sudano-Sahelian environment

Olawuni

Ubosi

Alaku

1992

Animal Feed Science and Technology

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Performance of Red × Rock Sex-Linked Hens Subjected to Restricted Feeding During the Laying Period

Cited by 11 publications

References 8 publications

Effect of feed form, formulation, and restriction on the performance of laying hens

Effect of feed form, formulation, and restriction on the performance of laying hens

A Comparison of Controlled Feeding Programs for Maximizing Returns of White Leghorn Layers

Effects of feed restriction on egg production and egg quality of exotic chickens during their second year of production in a Sudano-Sahelian environment

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