Voluntary food and calcium intake by the laying hen

Mongin, Pierre; Sauveur, Bernard

doi:10.1080/00071667408416118

Cited by 86 publications

(55 citation statements)

References 14 publications

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“…The pattern of daily feed intake in laying hens is influenced by the egg forming cycle and by photoperiod (Nys et al, 1976;Choi et al, 2004). Thus, hens consumed more diet in the afternoon (Keshavarz, 1998;Dezat et al, 2009), to account for calcium required in eggshell formation (Mongin and Sauveur, 1974). However, the protocol used in the present experiment might limit the birds from overconsuming the balancer diet since this diet was fed in a limited quantity.…”

Section: Discussionmentioning

confidence: 93%

Is sequential feeding of whole wheat more efficient than ground wheat in laying hens?

Faruk

Bouvarel

Mallet

et al. 2011

Animal

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The impact of sequential feeding of whole or ground wheat on the performance of layer hen was investigated using ISABROWN hens from 19 to 42 weeks of age. In addition, the effect of reduced dietary energy content of a complete diet was also investigated. Four treatments were tested. Whole wheat was alternated with a protein-mineral concentrate (balancer diet) in a treatment (sequential whole wheat: SWW), while another treatment alternated ground wheat (sequential ground wheat: SGW) with the same balancer diet. The control (C) was fed a complete layer diet conventionally. Another treatment (low energy: LE) was fed a complete diet conventionally. The diet contained lower energy (10.7 v. 11.6 MJ/kg) compared to the C. Each treatment was allocated 16 cages and each cage contained five birds. Light was provided 16 h daily (0400 to 2000 h). Feed offered was controlled (121 g/bird per day) and distributed twice (2 3 60.5 g) at 4 and 11 h after lights on. In the sequential treatment, only wheat (whole or ground) was fed during the first distribution and the balancer diet during the second distribution. Left over feed was always removed before the next distribution. The total feed intake was not different between SWW and SGW, but the two were lower than C (P , 0.05). Wheat intake was however, lowered with SGW compared to SWW (P , 0.05). Egg production and egg mass (EM) were not different between treatments. Egg weight was lower with SGW than with SWW (P , 0.05), but the two were similar to C. Body weight (BW) was lowered (P , 0.01) with SGW relative to SWW and C, SWW BW being also lower than the C one. The efficiency of egg production was increased (P , 0.01) with the SWW and SGW relative to the control. Birds fed LE had higher feed intake (P , 0.05) but they had similar egg production and EM compared to the two sequential treatments. The efficiency of feed utilization was also reduced (P , 0.01) with LE compared to SWW and SGW. It was concluded that sequential feeding is more efficient than conventional feeding. In addition, whole wheat appeared more efficient than ground wheat in terms of egg and BW.

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Section: Discussionmentioning

confidence: 93%

Is sequential feeding of whole wheat more efficient than ground wheat in laying hens?

Faruk

Bouvarel

Mallet

et al. 2011

Animal

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“…Experiments have been undertaken to determine if it is possible to further improve eggshell quality by substitution of oyster shell for part or all of the ground limestone in the complete laying ration. Several studies have discovered that providing Ca in the form of oyster shells results in higher digestibility and retention than the same amount of calcium carbonate fed as ground limestone (Scott et al, 1971;Mongin & Sauveur, 1974;Roland, 1988). It was hypothesized that the reason for this was that the larger particles of oyster shells took longer to digest because they remained in the gizzard and were slowly dissolved over a prolonged period (Scott et al, 1971).…”

Section: Introductionmentioning

confidence: 99%

Performance and egg quality of aged laying hens fed diets supplemented with meat and bone meal or oyster shell meal

Catli¹,

Bozkurt²,

Küçükyılmaz³

et al. 2012

SA J. An. Sci.

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Meat and bone meal (MBM) and oyster shell meal (OSM) were supplemented to a basal diet (LMS), either alone or in combination, in order to assess the dietary influences of those complementary Ca sources on performance and egg quality of laying hens. Four hundred and thirty-two Brown-Nick hens, at the beginning of their second production period, were divided into four treatment groups with six replicates each. The final body weight of OSM-fed hens was highest, whereas others did not differ significantly. Hens receiving OSM produced more eggs and egg mass along with considerably greater feed intake than those on all the other treatments. Egg weight was not affected by the treatments except for the lower egg weight of the MBM+OSM treatment. Hens fed a diet supplemented with MBM laid at a rate of 1.14%, 3.66% points lower than those on the control and OSM treatments, respectively. Feed efficiency was not influenced by origin of calcium source. Egg shape index and eggshell weight did not differ among treatments. Eggshell thickness and eggshell breaking strength were higher in hens fed with MBM as compared to control and OSM fed birds. Similar to the tendency in shell quality, MBM inclusion in the diet tended to enhance albumen height and Haugh unit. Dietary treatment with OSM resulted in the highest serum Ca and P concentrations. These results indicate that partially replacing limestone with OSM in the laying hen diet provided significant improvements in egg production performance, whereas most of the egg quality traits were enhanced by dietary supplementation with MBM at 4%. ________________________________________________________________________________

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“…Furthermore, if the ability of the laying bird to ingest more calcium just before egg calcification is considered (Mongin and Sauveur, 1974) …”

Section: Introductionmentioning

confidence: 99%

Jejunal calcium permeability in laying hens during egg formation

Nys¹,

Mongin²

1980

Reprod. Nutr. Dévelop.

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Voluntary food and calcium intake by the laying hen

Cited by 86 publications

References 14 publications

Is sequential feeding of whole wheat more efficient than ground wheat in laying hens?

Is sequential feeding of whole wheat more efficient than ground wheat in laying hens?

Performance and egg quality of aged laying hens fed diets supplemented with meat and bone meal or oyster shell meal

Jejunal calcium permeability in laying hens during egg formation

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