Post Embryonic Growth in Relation to Egg Weight

Merritt, E. S.; Gowe, R. S.

doi:10.3382/ps.0440477

Cited by 30 publications

(14 citation statements)

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“…Wiley et al (19503) found that chicks from Small eggs overcame their weight disadvantage. Merritt and Gowe (1965) found significant intra-strain regression coefficient of 65-d body weight on egg weight (b -5-73 g) and in our study a marked weight advantage was still evident in the broiler stock at day 56 (Table 2). It would seem that a 1-g difference in egg weight is reflected in more than 10-g difference in weight at age of marketing.…”

Section: Discussioncontrasting

confidence: 38%

“…Terms & Conditions of access and use can be found at http://www.tandfonline.com/page/ terms-and-conditions INTRODUCTION A maternal effect on the growth of the embryo, although well established in many species oflaboratory and farm animals, has received little attention in poultry. Moreover, the few studies that have been carried out (Wiley, 1950a, b;Krzanowska, 1959;Blyth et al, 1965;Chung and Stadelman, 1965;Merritt and Gowe, 1965) have produced conflicting results. In this study the effect of egg weight and egg constituents on embryonic and post-embryonic growth have been determined.…”

Section: Please Scroll Down For Articlementioning

confidence: 92%

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Maternal effects on embryonic and post‐embryonic growth in poultry

Al‐Murrani

1978

British Poultry Science

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1. It was found that the environment determined by the hen, namely protein, fat and moisture, had no effect on the growth of the embryo during the first 14 d of development. 2. The amount of protein available influenced growth during the last week of incubation but the amount of fat and water had no effect. 3. The regression of embryo on egg weight for the pooled data of large (mean 62 g) and small (53 g) eggs was 0.85 +/- 0.06 at day 20. 4. Embryos from large eggs were significantly heavier than those from small eggs on day 20: this difference persisted to the end of the experiment at 56 d of age when it had increased to 100 g. 5. A 1-g difference in egg weight was reflected in about a 10-g difference in chick weight at 56 d of age.

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Section: Discussioncontrasting

confidence: 38%

Section: Please Scroll Down For Articlementioning

confidence: 92%

Maternal effects on embryonic and post‐embryonic growth in poultry

Al‐Murrani

1978

British Poultry Science

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“…Skoglund, Seegar and Ringrose (1950) found in two trials that chicks of the New Hampshire breed which hatched from larger eggs gave higher 12-week body weight than those hatched from smaller eggs. Similar results were obtained by Goodwin ((1961) and Merritt and Gowe (1965) in heavy breeds. In an experiment where age of dam was confounded with season, Cowen, Bohren and McKean (1964) found in a light breed that increase of egg weight was associated with age.…”

Section: Replacement Of Damssupporting

confidence: 93%

Estimation of genetic gains in populations with overlapping generations¹

Cassuto¹,

Bell²,

Anderson³

1970

British Poultry Science

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“…Similarly, Jull and Heywang (1930) presented data showing an increasingly high positive correlation between egg size and embryo size as hatching time approached. Chick weight, however, has been variously recorded to range from about 62% to 71% of the fresh egg weight (see for example Upp, 1928;Jull and Heywang, 1930;Axelsson, 1954;O'Neil, 1955;Merritt and Gowe, 1965), which suggests there is a considerable amount of variation in chick weight at hatch which is not accounted for by the size of the egg. Simkiss (1980) found it was possible to hatch chicks which had been subjected to a severe water stress by the removal of allantoic fluid or by drilling holes in the shell to increase the water loss from the egg.…”

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confidence: 97%