Selection for Increased Weights of Six-Month-Old Beef Calves in a Brahman-Angus Population

Dawson, W. M.; Vernon, E. H.; Baker, A. L.; Warwick, E. J.

doi:10.2527/jas1954.133556x

Cited by 4 publications

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“…1 and 2 showed that male calves exhibited a more marked response to dam age than did female calves. Rollins & Guilbert (1954), Dawson et al (1954) and Pahnish et al (1961) have also noted this effect, although Koch & Clark (1955) published data which showed no evidence of a differential response of this type.…”

Section: B the Response Of Male And Female Calves To The Environmentmentioning

confidence: 95%

“…Most of the reports dealing with the effect of dam age upon weaning weight show that the weaning weight of the calf increases as the dam age increases up to 7-8 years, after which age it declines (Knapp & Philhps, 1942;Koger & Knox, 1945;Dawson, Vernon, Baker & Warwick, 1954;Rollins & Guilbert, 1954;Burgess, Landblom & Stonaker, 1954;Koch & Clark, 1955;McCormick & Southwell, 1957;Marlowe & Gaines, 1958;Brown, 1960;Lasley, Day & Comfort, 1961;Swiger, 1961). Neville (1962), who measured the milk production of beef cows, showed that when 210-day weights were corrected for the weight of dam and for milk production, there was no dam age effect.…”

mentioning

confidence: 99%

“…Knapp & Black (1941) reported differences between bull, heifer and steer calves at weaning. Since then Koger & Knox (1945), Koch (1951), Burgess et al (1954), Dawson et al (1954), Rollins & Guilbert (1954), Koch & Clark (1955), Rollins & Wagnon (1956), Marlowe & Gaines (1958), Koch, Gregory, Ingalls & Arthaud (1959), Blackmore.Marchello &Urick (1960),Brown (1960), Brinks, Clark, Rice & Kieffer (1961), Lasley et al (1961), Pahnish, Stanley, Bogart & Roubicek (1961) and Swiger (1961) have all reported a similar fact. Many of these workers used different methods of standardizing weaning weights, and so strict comparisons are difficult.…”

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Animal production studies in Jamaica. III. The effect of dam age upon the 210-day weights of calves, and the response of male and female calves to different environments

Creek¹,

Nestel²

1964

J. Agric. Sci.

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1. The data used in this study were the estimated 210-day weights of 2351 calves born on eight farms in the years 1958–61. In each year data were only used from herds which recorded at least five calves of each sex in that year. One hundred such herd years were included in the study.2. The mean 210-day difference in weight between male and female calves was 27 lb. 1202 male calves had a mean weight of 380 lb. and 1149 female calves had a mean weight of 353 lb.3. The response of calf weight to age of dam was different in the two sexes. The weight of the female calf was found to increase with dam age in a linear fashion, whereas the response of male calves was best described by a quadratic relationship with the maximum response at a dam age of 8 years.

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Section: B the Response Of Male And Female Calves To The Environmentmentioning

confidence: 95%

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confidence: 99%

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confidence: 99%

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Animal production studies in Jamaica. III. The effect of dam age upon the 210-day weights of calves, and the response of male and female calves to different environments

Creek¹,

Nestel²

1964

J. Agric. Sci.

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“…Personnel associated with Federal Experiment Stations wean calves at 180 days (Dawson _et , 1954;Koch, 1951;Brinks et al, 1961Brinks et al, , 1962.…”

Section: Preweaning Weightsmentioning

confidence: 99%

Beef calf weights at 100 days and 205 days as indicators of dams' producing ability

Drewry

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Birth weights of calves differ among the various beef breeds. In general, calves of the Angus breed are lighter at birth than calves of the Hereford or Shorthorn breeds. Temple (1963) in the 1962-1963 Annual Report of the Southern Regional Beef Cattle Breeding Project (SIO) list by breed the average birth weights of calves born during 1962 as: 60.2 pounds for 1031 Angus, 69.3 pounds for 1731 Hereford, 67.2 pounds for 190 Shorthorns, 74.2 pounds for 96 Santa Gertrudis, 61.8 pounds for 169 Brahman and 68.0 pounds for 70 Brangus. Comfort and Lasley (1960) from a survey of the literature derived average birth weights of 66, 74 and 67 pounds for bulls and 59, 71, and 62 pounds for heifers in the Angus, Hereford and Shorthorn breeds, respectively. Burris and Blunn (1952) at the Nebraska station observed birth weights of 64.2, 67.4 and 64.3 pounds for 502 calves of the Angus, Hereford and Shorthorn breeds, respectively.

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Maternal Effects on Preweaning Growth Rate in Cattle

Deese

Koger

1967

Journal of Animal Science

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Selection for Increased Weights of Six-Month-Old Beef Calves in a Brahman-Angus Population

Cited by 4 publications

References 0 publications

Animal production studies in Jamaica. III. The effect of dam age upon the 210-day weights of calves, and the response of male and female calves to different environments

Animal production studies in Jamaica. III. The effect of dam age upon the 210-day weights of calves, and the response of male and female calves to different environments

Beef calf weights at 100 days and 205 days as indicators of dams' producing ability

Maternal Effects on Preweaning Growth Rate in Cattle

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