The Production of Double Yolked Eggs in the Fowl

Conrad, R. M.; Warren, D. C.

doi:10.3382/ps.0190009

Cited by 27 publications

(12 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Because of the incidence of erratic ovipositions and internal laying, it is difficult to evaluate the sequence length of full-fed broiler breeders. The increased incidence of erratic ovipositions and defective eggs is the result of simultaneous development of follicles (Conrad and Warren, 1940;Jaap and Muir, 1968;Hocking et al, 1987Hocking et al, ,1989 and excessive ovulations (Udale et al, 1972;Whitehead and Hocking, 1988). Excessive ovulations may lead to two or more follicles being ovulated simultaneously or sequentially, resulting in multiple-yolked eggs or more than one egg being laid per day.…”

Section: Discussionmentioning

confidence: 96%

Effect of Feed Allowance During Rearing and Breeding on Female Broiler Breeders.

et al. 1992

View full text Add to dashboard Cite

The influence of feed allowance during rearing (4 to 18 wk) and breeding (18 to 62 wk) on ovarian morphology and egg production was examined. During rearing, beginning at 4 wk of age, 400 Indian River pullets that had been full-fed from 1 day of age either continued to be full-fed (F, n = 200) or were feed restricted (R, n = 200), following commercial practice. At 18 wk of age, 100 birds (within +15% of the mean BW) in each of F and R rearing groups were further assigned to be full-fed (n = 50) or feed restricted (n = 50) during breeding. Thus, based on feed allowance during rearing and breeding, four treatment groups were formed (FF, FR, RF, and RR). Feed restriction during rearing significantly delayed oviduct development and age at sexual maturity (age at first egg). Compared with feed restriction during both rearing and breeding (RR), ad libitum feeding beginning at 18 wk of age (RF) significantly increased the weight of the ovary and the number of large follicles at sexual maturity but did not significantly affect the age at sexual maturity. Feed restriction during rearing, breeding, or both significantly reduced the incidence of erratic ovipositions, defective eggs, and multiple ovulations. The incidence of erratic ovipositions was positively correlated (r = .692, P less than or equal to .001) with the laying of soft-shelled and shell-less eggs and negatively correlated (r = -.508, P less than or equal to .001) with the production of settable eggs to 62 wk of age. Compared with ad libitum feeding, controlled feeding during breeding significantly improved both settable and total egg production. Among the four feeding regimens, Treatment RR resulted in the highest fertility and hatchability.

show abstract

Section: Discussionmentioning

confidence: 96%

Effect of Feed Allowance During Rearing and Breeding on Female Broiler Breeders.

et al. 1992

View full text Add to dashboard Cite

show abstract

“…Conrad and Warren (1940) reported three ways that double yolked eggs might occur. First, 65% of them resulted from the simultaneous development and ovulation of two ova.…”

Section: Introductionmentioning

confidence: 97%

Incidence of Double Yolked Eggs in the Initial Stages of Lay as Affected by Strain and Season of the Year

Christmas

Harms

1982

Poultry Science

View full text Add to dashboard Cite

Data from seven laying trials were summarized to determine the influence of strain and season on the incidence of double yolked eggs in the initial stages of lay. At least 12 strains were studied during each of these trial-year periods. All birds were grown under natural daylight conditions and subjected to 14 hr per day including morning supplemental light (Trials 1 to 4) or 15 hr per day with morning and evening supplemental light (Trials 5 to 7) in the laying house.There were significant strain effects on the incidence of double yolked eggs at the onset of lay. This indicated possible genetic differences among strains for this characteristic. Spring and summer housed laying hens produced a greater number of double yolked eggs than did those hens placed in the laying house in the late fall or winter months. Incidence of double yolked eggs and age at 50% production were significantly correlated; however, this was believed to be a season rather than a within-strain maturity effect.(Key words.-double yolk, laying hens)

show abstract

“…Jaap and Muir (1968) reported that 5 to 12.5% of the eggs were double-yolked from broiler breeder pullets during the first 3 mo of lay. Conrad and Warren (1940) reported that 65% of double-yolked eggs resulted from two simultaneous ovulations, and 25% were caused by the two normal ova developing a day apart and being ovulated simultaneously. Warren and Scott (1935) reported that yolks in double-yolked eggs were not the same weight but were similar to those of single yolks from the same hens.…”

Section: Introductionmentioning

confidence: 98%

A Comparison of Eggshell Weight from Double- and Single-Yolked Eggs

Harms

Abdallah

1995

Poultry Science

View full text Add to dashboard Cite

Three experiments were conducted with Hy-Line W36® commercial layers and two experiments with Arbor Acres broiler breeder hens laying double-yolked eggs. Egg weight, shell weight, percentage shell, and shell weight per unit of surface (SWUSA) were compared for double-yolked and single-yolked eggs. Egg weight and shell weight were heavier from doubleyolked eggs than from single-yolked eggs. However, percentage shell and SWUSA were lower for the double-yolked eggs.

show abstract

The Production of Double Yolked Eggs in the Fowl

Cited by 27 publications

References 3 publications

Effect of Feed Allowance During Rearing and Breeding on Female Broiler Breeders.

Effect of Feed Allowance During Rearing and Breeding on Female Broiler Breeders.

Incidence of Double Yolked Eggs in the Initial Stages of Lay as Affected by Strain and Season of the Year

A Comparison of Eggshell Weight from Double- and Single-Yolked Eggs

Contact Info

Product

Resources

About