scholarly journals Some Factors Affecting Egg Weight in the Domestic Fowl

1933 ◽  
Vol 12 (2) ◽  
pp. 97-111 ◽  
Author(s):  
Raymond T. Parkhurst
Keyword(s):  
Domestic Fowl ◽  
Egg Weight ◽  
Factors Affecting

Some observations on factors affecting myoglobin concentrations in muscle

1950 ◽  
Vol 40 (4) ◽  
pp. 356-366 ◽  
Author(s):  
R. A. Lawrie
Keyword(s):  
Domestic Fowl ◽  
Adult Animal ◽  
Significant Rise ◽  
Longissimus Dorsi ◽  
Probability Level ◽  
Factors Affecting ◽  
Relationship Of

1. The myoglobin contents of selected muscles in horse, pig, domestic fowl and pigeon, and in the foetuses of horse, pig, sheep and cattle, have been determined.2. The order of increasing concentration of myoglobin in the adult animal (4 years) is given by the series heart, longissimus dorsi, diaphragm and psoas, the figures for draught horse being, respectively, 0·325, 0·465, 0·610 and 0·705% and for pig, 0·203, 0·280, 0·350 and 0·435%, and the ratios of these concentrations being the same in each animal.3. In both draught horse and pig, it is shown that the concentration of the pigment rises rapidly from birth, and that, after 2 years in the horse, and 1 year in the pig, it remains fairly constant, except in the case of horse psoas and diaphragm where there is a slow, but significant, rise throughout life.4. This relationship of myoglobin with age has been shown to be significant at a probability level of 0·1%.

scholarly journals Relation of Body Weight and Egg Weight in the Domestic Fowl

1935 ◽  
Vol 14 (4) ◽  
pp. 232-236 ◽  
Author(s):  
E.M. Funk
Keyword(s):  
Body Weight ◽  
Domestic Fowl ◽  
Egg Weight

scholarly journals Some Factors Affecting Egg Size in the Domestic Fowl

1933 ◽  
Vol 12 (6) ◽  
pp. 362-367 ◽  
Author(s):  
Noel L. Bennion ◽  
D.C. Warren
Keyword(s):  
Domestic Fowl ◽  
Egg Size ◽  
Factors Affecting

scholarly journals PERFORMANCES OF THE INDIGENOUS CHICKENS OF NIGERIA AND THE APOLLO 1. EGG WEIGHT, RATE OF PRODUCTION AND FACTORS AFFECTING THEM

2021 ◽  
Vol 4 (1) ◽  
pp. 67-79
Author(s):  
A. Osu ◽  
D. Almut
Keyword(s):  
Body Weight ◽  
Sexual Maturity ◽  
Egg Production ◽  
Indigenous Chicken ◽  
Egg Weight ◽  
Factors Affecting ◽  
Indigenous Chickens ◽  
Breed Differences ◽  
Two Generations

Data on the Ife Breed of the indigenous chicken and the Apollo, an imported commercial egg strain were analysed for effect of breed, time and generation of hatch, body weight at various ages, and age at sexual maturity on egg weight and rate of egg production to eight months. There were highly significant generation and breed differences, with a mean of 116 eggs for the Ife Breed compared to 106 for the Apollo over two generations. Other factors that significantly affected egg production were body weight and age at sexual maturity, and mature egg weight. Mean pullet year egg weight showed breed and hatch differences and were significantly affected by body weight and age at sexual maturity. Mean egg weight for the Ife Breed was 32.3 compared to 48.7 for the Apollo.

scholarly journals Chemical analysis and quality assessment of Nigerian indigenous domestic fowl and quail eggs produced at Songhai delta farms

2020 ◽  
Vol 47 (5) ◽  
pp. 192-203
Author(s):  
G. I. O. Odafe-Shalom ◽  
E. O. Owen
Keyword(s):  
Chemical Analysis ◽  
Domestic Fowl ◽  
Crude Protein ◽  
Relative Proportion ◽  
Chemical Compositions ◽  
Ether Extract ◽  
Potential Health ◽  
Egg Weight ◽  
Physical Measurements ◽  
Whole Egg

The quail and indigenous domestic fowl (IDF) are purebred birds that have received little or no genetic manipulation and intensive husbandry in Nigeria. Recently awareness is being created of the potential health value and functional properties of their eggs in industry. This necessitated the interest to examine the indices of egg quality by physical measurements and by chemical analysis of the eggs of the two species. Results showed higher values in IDF eggs for indices of egg size - longitudinal and latitudinal circumference and shell thickness. Weight indices – whole egg weight, albumen weight, and yolk weight, albumen height and yolk height recorded higher values in the IDF eggs. Whole egg weight was 36.51±3.25g for IDF egg, significantly (p<0.01) higher than the whole weight, 9.75±1.32g, of quail egg. Also the relative weight (proportion) of shell to total egg weight was higher in the IDF egg (10.74%) than in quail egg (9.56%). However, the proportions of albumen and yolk (49.38% and 41.01%) in quail egg were higher than the corresponding values in IDF egg (40.59%, and 48.68%). The Haugh unit HU and yolk index YI values of quail eggs were significantly higher (P< 0.05) and (P<0.01) respectively than the values in IDF eggs. The approximate chemical compositions (g/100gdm) of quail eggs were moisture content - 68.12, crude protein-13.45, ether extract-10.45, soluble carbohydrates-4.46, and ash-3.10; whereas IDF eggs measured 71.51, 12.63, 9.74, 3.56 and 2.5 respectively. The differences in crude protein and ether extract values were not significant (p>0.05) for the two sets of eggs.     La caille et la volaille domestique indigène (le 'IDF') sont des oiseaux de race pure qui ont subi peu ou pas de manipulation génétique et un élevage intensif au Nigeria. Récemment, on a pris conscience de la valeur potentielle pour la santé et des propriétés fonctionnelles de leurs oeufs dans l'industrie. Ceci a nécessité l'intérêt d'examiner les indices de qualité des oeufs par des mesures physiques et par analyse chimique des oeufs des deux espèces. Les résultats ont montré des valeurs plus élevées dans les oeufs 'IDF' pour les indices de taille des oeufs - circonférence longitudinale et latitudinale et épaisseur de la coquille. Les indices de poids - le poids de l'oeuf entier, le poids de l'albumen et le poids du jaune, la hauteur de l'albumen et la hauteur du jaune ont enregistré des valeurs plus élevées dans les oeufs 'IDF'. Le poids de l'oeuf entier était de 36.51 ± 3.25 g pour l'oeuf de la 'FIL', significativement (p <0.01) supérieur au poids total, 9.75 ± 1.32 g, de l'oeuf de caille. De plus, le poids relative (proportion) de la coquille par rapport au poids total de l'oeuf était plus élevé dans l'oeuf 'FIL' (10.74%) que dans l'oeuf de caille (9.56%). Cependant, les proportions d'albumen et de jaune (49.38% et 41.01%) dans l'oeuf de caille étaient supérieures aux valeurs correspondantes dans l'oeuf 'IDF' (40.59% et 48.68%). Les valeurs de l'unité de Haugh 'HU' et de l'indice du jaune 'YI' des oeufs de caille étaient significativement plus élevées (P <0.05) et (P <0.01) respectivement que les valeurs des oeufs 'IDF'. 68.12, protéine brute-13.45, extrait d'éther- 10.45, glucides solubles-4.46 et cendre-3.10; tandis que les oeufs du 'FIL' mesuraient respectivement 71.51, 12.63, 9.74, 3.56 et 2.5. Les différences entre les valeurs de proteins brutes et d'extrait d'éther n'étaient pas significatives (p> 0.05) pour les deux ensembles d'oeufs.

Sire × hatching season interaction in egg production traits within flocks of domestic fowl

1979 ◽  
Vol 30 (5) ◽  
pp. 991
Author(s):  
BH Yoo ◽  
BL Sheldon
Keyword(s):  
Domestic Fowl ◽  
Variance Component ◽  
Egg Production ◽  
Production Traits ◽  
White Leghorn ◽  
Egg Weight ◽  
Sib Families ◽  
Selection For ◽  
Efficiency Of Selection ◽  
Season Interaction

The extent of sire x hatching season interaction in egg production characters has been studied in White Leghorn, Australorp and Synthetic flocks in which half-sib families bred from the same sires were mated largely to the same dams for spring and autumn hatchings. Interaction appeared to be more important in White Leghorn and Synthetic than in Australorp. The estimate of variance component for interaction was not consistent among the three flocks, and it was important only in certain flocks for different characters: age at first egg, part-annual hen-housed production (PHP), and egg weight at 34 and 62 (EWL) weeks of age in Synthetic; and annual survivors' production and egg specific gravity at 62 weeks of age (SGL) in White Leghorn. Comparison of within-season and across-seasons heritabilities showed that the former could be on average more than 45% higher than the latter in PHP, EWL, SGL and annual hen-housed production. As the estimates of the genetic correlation coefficient between seasons tend to be below 1.0 for many characters in White Leghorn and Synthetic, the sire x hatching season interaction may need to be taken into account and investigated further to improve the efficiency of selection for egg production.

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