Some Factors Affecting Gestation Length and Birth Weight of Beef Cattle

Burris, Martin J.; Blunn, Cecil T.

doi:10.2527/jas1952.11134x

Cited by 56 publications

(27 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…reducing to 7.3% when the age-of-dam effect was removed. The ranking order for breeds and crosses in gestation period was the same for bull and heifer calves in this study, namely: C X F, C X J, H X F, H X J, J X J, F X J, and F X F. The Hereford breed appears characterised by a relatively long gestation period but light birth weight in comparison with other British beef breeds (Burris and Blunn 1952;Anderson and Plum 1965). These characteristics of the Hereford appear to carryover into crosses with Jersey and Friesian cows, The Charolais sire.…”

Section: Discussionmentioning

confidence: 57%

See 1 more Smart Citation

Beef production from the dairy herd: calving performance of cows

Everitt

Jury

1972

New Zealand Journal of Agricultural Research

View full text Add to dashboard Cite

Data are reported on the calving performance of cows in beef production trials in three successive calvings of South Auckland herds. The main comparison of Friesian, Hereford, and Charolais sires over the Jersey cow is supplemented by information on the Friesian cow mated to these three sire breeds and on straightbred Jersey and straightbred Angus calvings.Overall, 81% of ca1vings were unobserved. Eight percent of all ca1vings, or 45% of observed calvings, were assisted. Jersey and Friesian cows required more assistance when calves were sired by Charolais and Friesian sires, and least when Hereford sires were used.Cow mortalities at calving time were greatest for Jersey and Friesian cows in-calf to Charolais sires. Perinatal calf mortalities accounted for 3.5% of all calves born, with a greater mortality of calves by Charolais sires than other breeds.Calves assisted at birth were heavier than those from unassisted calvings, but gestation lengths did not differ significantly. Calves dying at birth had a shorter gestation period and were lighter than surviving calves.There were significant sire and farm effects on birth weight and gestation length of Jersey crossbred calves, and age of dam significantly affected birth weight but not gestation length. Bull calves had longer gestation periods and were heavier at birth than heifers. Sire breed affected calf birth weights in the descending ranking order of Charolais, Friesian, Hereford, and Jersey. Purebred Angus calves were similar in birth weight to Hereford X Jersey crossbreds. Friesian cows produced heavier calves than Jersey cows. Gestation periods were longest for calves with Charolais sires; those sired by the Hereford were next longest; and Friesian and Jersey sire breeds had the shortest gestations.Heritabilities of birth weight and gestation length were calculated as 0.31 and 0.12 respectively.Results are discussed in relation to beef breeding programmes.

show abstract

Section: Discussionmentioning

confidence: 57%

“…Burris and Blunn (1952) found that differences in gestation length accounted for 7.9% of the variance in birth weight. reducing to 7.3% when the age-of-dam effect was removed.…”

Section: Discussionmentioning

confidence: 99%

Beef production from the dairy herd: calving performance of cows

Everitt

Jury

1972

New Zealand Journal of Agricultural Research

View full text Add to dashboard Cite

show abstract

“…Likewise, Carman (1955), in a study of 1 , 646 lactations in two Iowa Holstein herds, found that the age of cow had l itt le relation to breeding efficiency. Burris and Blunn (1952 ), Jafar ~ al . (1950), Knapp~ al .…”

Section: Review Of Literature Effect Of Age Of Dammentioning

confidence: 99%

A Study of the Reproductive Performance of a Purebred Hereford Herd1

Lindley

Easley

Whatley

et al. 1958

Journal of Animal Science

View full text Add to dashboard Cite

“…(1956) adjusted the birth weights of calves from 2, 3, and 4 year old dams by the addition of 10 pounds, 6 pounds and 2 pounds, respectively. In the studies involving Western beef cattle (Koch and Clark, 1955a;Burris and Blunn, 1952;Brinks _et aX. , 1962) and Cornbelt beef cattle (Swiger, 1961) the calves with the heavier birth weights were from cows ranging in age from 5 to 10 years.…”

mentioning

confidence: 99%

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

Drewry

View full text Add to dashboard Cite

Some Factors Affecting Gestation Length and Birth Weight of Beef Cattle

Cited by 56 publications

References 0 publications

Beef production from the dairy herd: calving performance of cows

Beef production from the dairy herd: calving performance of cows

A Study of the Reproductive Performance of a Purebred Hereford Herd1

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

Contact Info

Product

Resources

About