On the Inheritance of Egg Weight

Mostageer, A.; Kamar, G. A. R.

doi:10.3382/ps.0400857

“…These differences may possibly be caused by the fact that different breeds were used in these studies, or the reason may be that the authors begin the investigations with 7 to 9-month-old, 17-week-old, and 20-week-old birds respectively, since Ackert [48] reported that at the age of sexual maturity chickens acquire maximum resistance to A. galli infection. The findings that RIR had the highest egg weight compared to that of Fayoumi and Sonali, and that the egg weight of Sonali was in between the parental breeds are in accordance with observations of other investigators Mostageer, et al [49,50]. The average egg weight of Fayoumi and RIR treated groups is highly consistent with Amer [50], who reported 39.6g and 50.1g, respectively.…”

Section: Discussionsupporting

confidence: 91%

Impact of Helminth Infections on Production of Chickens

Permin¹

2020

BJSTR

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In free-range poultry rearing systems parasitic infections are frequent with prevalence's up to 100 %, which might reduce productivity. Two hundred and seventy 3-week-old chicks of Rhode Island Red (RIR), Fayoumi and Sonali (a cross of male RIR and female Fayouimi) were divided into 6 groups (2 groups for each breed) consisting of 45 chicks. One group of each breed of chickens was given a routine treatment with levamisole hydrochloride (Poulnec®). All chicks were vaccinated against Newcastle disease, Infectious bronchitis, Infectious bursal disease, Fowl pox, and Fowl cholera. Feed and water were provided ad libitum. Furthermore, all groups had access to an open pen. Naturally, infected seeders hens were then used to induce parasitic infections in all experimental chickens. The non-treated chickens had a significantly higher worm burden compared to the treated chickens. All non-treated chickens showed a significantly lower weight gain compared with the treated chickens at the end of experiment. The average age of point of lay was delayed in the non-treated groups compared to treated groups and in case of Sonali non-treated group it was significantly higher compared to treated group. The average number of eggs and the average egg weight were significantly higher in the treated groups compared to non-treated groups. Economic calculations show that the treatment of hens against parasitic infections in free-range chickens increases the net profit pr hen significantly.

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“…These differences may possibly be caused by the fact that different breeds were used in these studies, or the reason may be that the authors begin the investigations with 7 to 9-month-old, 17-week-old, and 20-week-old birds respectively, since Ackert [48] reported that at the age of sexual maturity chickens acquire maximum resistance to A. galli infection. The findings that RIR had the highest egg weight compared to that of Fayoumi and Sonali, and that the egg weight of Sonali was in between the parental breeds are in accordance with observations of other investigators Mostageer, et al [49,50]. The average egg weight of Fayoumi and RIR treated groups is highly consistent with Amer [50], who reported 39.6g and 50.1g, respectively.…”

Section: Discussionsupporting

confidence: 91%

Untitled

2020

BJSTR

0

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In free-range poultry rearing systems parasitic infections are frequent with prevalence's up to 100 %, which might reduce productivity. Two hundred and seventy 3-week-old chicks of Rhode Island Red (RIR), Fayoumi and Sonali (a cross of male RIR and female Fayouimi) were divided into 6 groups (2 groups for each breed) consisting of 45 chicks. One group of each breed of chickens was given a routine treatment with levamisole hydrochloride (Poulnec®). All chicks were vaccinated against Newcastle disease, Infectious bronchitis, Infectious bursal disease, Fowl pox, and Fowl cholera. Feed and water were provided ad libitum. Furthermore, all groups had access to an open pen. Naturally, infected seeders hens were then used to induce parasitic infections in all experimental chickens. The non-treated chickens had a significantly higher worm burden compared to the treated chickens. All non-treated chickens showed a significantly lower weight gain compared with the treated chickens at the end of experiment. The average age of point of lay was delayed in the non-treated groups compared to treated groups and in case of Sonali non-treated group it was significantly higher compared to treated group. The average number of eggs and the average egg weight were significantly higher in the treated groups compared to non-treated groups. Economic calculations show that the treatment of hens against parasitic infections in free-range chickens increases the net profit pr hen significantly.

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“…Parmi les particularités de la race Fayoumi, déjà signalées antérieurement (par exemple M OSTAGEER & K AMAR , 1961 ;G HA rrt et al, 1962 ; AMER, 1972), on retrouve ici, outre la petite taille corporelle et celle des oeufs, la forte proportion de jaune par rapport à l'albumen, et le pourcentage relativement élevé de coquille : le croisement F i est un terme de comparaison, ainsi que les autres lignées de notre laboratoire. La proportion élevée de vitellus provient en partie de la petite taille des &oelig;ufs de cette race, compte tenu de la corrélation négative observée entre poids de l'oeuf et pourcentage de jaune (par exemple BOUGON et al, 1981).…”

Section: Discussionunclassified

Etude des particularités de la poule Fayoumi. III. Ponte, caractéristiques des œufs, efficacité alimentaire et paramètres physiologiques de poules Fayoumi, Rhode-Island et F1 en batteries

MÉRAT¹,

BORDAS²,

et al. 1983

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In Ploufragan, comparison of the parental breeds, Fayoumi and R.I.R., and of the two reciprocal crosses showed a heterosis as the mean value of the crossbreds exceeded that of the parental breeds by about 10 p. 100 for egg number and laying percentage and by 6 p. 100 for food efficiency one the laying year. Differences appeared between the two reciprocal crosses, the a Fayoumi X 9 R.I.R. crossbreds exhibiting a higher laying persistency, a slightly higher egg mass, but a 1.8 g lower mean egg weight. It seems that with and additional selection effort, especially on the R.I.R. strain, the crossbreds may give good production results in laying batteries, especially at a high temperature.

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On the Inheritance of Egg Weight

Cited by 5 publications

References 8 publications

Impact of Helminth Infections on Production of Chickens

Impact of Helminth Infections on Production of Chickens

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Etude des particularités de la poule Fayoumi. III. Ponte, caractéristiques des œufs, efficacité alimentaire et paramètres physiologiques de poules Fayoumi, Rhode-Island et F1 en batteries

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