Genetics of turkeys: Economic traits

Buss, E. G.

doi:10.1079/wps19890010

Cited by 9 publications

(6 citation statements)

References 169 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Friars et al (1963) reported an average improvement in egg production of approximately 3 eggs per hen for an 8-wk production period. Buss (1989) observed egg production in Fj crosses equal to that of the better parental strains. These and other observations have led to the basic conclusion that there is little nonadditive genetic variation for egg production (Kondra and Shoffner, 1955;Nestor, 1971;Nestor, 1985).…”

Section: Contrastsmentioning

confidence: 51%

“…Indeed, when crosses were evaluated based on the aggregate trait of meat yield per dam, only one of the 12 single crosses resulted in an unusually high meat yield (Kondra and Shoffner, 1955). Heterosis has also been reported for egg production (Friars et al, 1963;Buss, 1989), fertility, and hatchability (Kondra and Shoffner, 1955;Friars et al, 1963).…”

Section: Introductionmentioning

confidence: 94%

See 1 more Smart Citation

Genetics of Growth and Reproduction in the Turkey.

1991

View full text Add to dashboard Cite

A commercial sire line (C) and an experimental population selected solely for increased 16-wk BW (F) were reciprocally crossed to produce crossbred F1 and F2 progeny. The F1 and F2 crosses were used to evaluate the presence of nonadditive genetic variance for growth and reproductive traits. The crosses demonstrated improved growth performance as indicated by heterosis for 16- and 20-wk BW. The difference in BW was, however, reversed at maturity as indicated by negative heterosis for BW at maturity. The F1 and F2 crosses also exhibited heterosis for walking ability. Heterosis for reproductive traits was greater than for growth. The F1 crosses produced approximately 20 eggs more in a 180-day production season than the parental populations. This difference was halved in F2 generation hens. Improved egg production was achieved both through an increase in the rate of egg production and through a reduction in broodiness. The present experiment indicates that there is potential for significant heterosis for growth and reproduction in some crosses in the domestic turkey. The results also indicate that heterosis can be considerable, even in crosses of lines which do not differ greatly in BW or reproductive performance.

show abstract

Section: Contrastsmentioning

confidence: 51%

Section: Introductionmentioning

confidence: 94%

Genetics of Growth and Reproduction in the Turkey.

1991

View full text Add to dashboard Cite

show abstract

“…Improvements in body size and conformation of commercial turkey populations have been extensive (Buss, 1989). Progress, however, has not been without substantial losses in reproductive fitness, as indicated by reductions in settable eggs, fertility, and hatchability (McCartney et al, 1968;Nestor, 1985).…”

Section: Introductionmentioning

confidence: 98%

Genetics of Growth and Reproduction in the Turkey.

1991

View full text Add to dashboard Cite

A line of turkeys selected 28 generations for increased 180-day egg production (E) was compared through regression analysis with the randombred control population (RBC1) from which it originated. The only curvilinear trends observed for RBC1 were for egg weight and 8-wk (both sexes) and 16-wk (males) BW. Linear declines in egg production and rate of lay through 84 and 180 days of lay, the number of clutches during the 180-day production period, effective days of egg production, and 16-wk (females) and 20-wk (both sexes) BW were observed for RBC1. The RBC1 turkeys had linear increases in the percentage of broody hens during the first 84 and 180 days of production, the average length of the broody period, and the total number of days lost to broodiness during the 180-day period. When expressed as a deviation from RBC1, positive quadratic curvilinear changes were observed for E turkeys for number of clutches and broody periods, and days lost to broodiness during the first 180 days of production. Percentage hatch of fertile eggs at 8 and 12 wk of production also exhibited a positive quadratic change with generation. Linear increases in egg production, rate of lay, clutch length (average and maximum), number of effective days of production, and percentage hatch of fertile eggs 12 wk into production were observed for E turkeys. There were linear declines in number of days from photostimulation to the production of first egg, number of clutches, and number, average length, and days lost to broodiness for E line turkeys.(ABSTRACT TRUNCATED AT 250 WORDS)

show abstract

“…Therefore, emphasis on maximizing the deboned product has heightened selection emphasis on highly heritable traits such as BW and conformation (Johnson and Asmundson, 1957;Buss, 1989). Therefore, emphasis on maximizing the deboned product has heightened selection emphasis on highly heritable traits such as BW and conformation (Johnson and Asmundson, 1957;Buss, 1989).…”

Section: Introductionmentioning

confidence: 99%

Research Note: Influence of Body Weight Selection on the Growth Curve of Turkeys

1991

View full text Add to dashboard Cite

The growth curve of a population of turkeys selected for increased 16 wk BW (Line F) and a randombred control population (RBC2) was determined. It was concluded that the Gompertz equation best described the growth pattern of Lines F and RBC2 regardless of sex. Line F had higher BW at hatching, BW and slope at point of inflection (POI), and asymptotic BW than Line RBC2. Age at POI and asymptote were achieved later for Line RBC2 than for Line F. Male turkeys had higher BW and age at POI and BW and age at asymptote than females. Slope at POI was greater for females than for males.

show abstract

Genetics of turkeys: Economic traits

Cited by 9 publications

References 169 publications

Genetics of Growth and Reproduction in the Turkey.

Genetics of Growth and Reproduction in the Turkey.

Genetics of Growth and Reproduction in the Turkey.

Research Note: Influence of Body Weight Selection on the Growth Curve of Turkeys

Contact Info

Product

Resources

About