The incidence, repeatability and effect on dam performance of twinning in British Friesian cattle

Bowman, J. C.; Hendy, C. R. C.

doi:10.1017/s0003356100028725

Cited by 19 publications

(14 citation statements)

References 5 publications

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“…Depression in 305-day, ME milk yield following a twin birth was evident (P<.05) in twin calvers that gave birth to twins without dystocia and, although not significant (P>.05), in those that showed dystocia with the twin birth. This result agrees with (2,4,9,11). However, no depression in milk yield was in the twin pregnancy lactation of either group, contrary to (14).…”

Section: Means Insupporting

confidence: 90%

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Effects of Twinning on Lactation and Days Open in Holsteins

Chapin¹,

Vleck²

1980

Journal of Dairy Science

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Effects of twinning on lactation and days open in Holsteins were studied from calving records compiled by member surveys of Eastern Artificial Insemination Cooperative. Records of cows with 305-day mature-equivalent records from the Northeast Dairy Records Processing Laboratory were grouped according to whether the twin calving was associated with dystocia. Records of each cow that had a twin calving were paired with records of a single-calving control herdmate. In the twin group of 175 cows associated with dystocia, twin pregnancy had no effect on production; milk and fat production in the lactation initiated by twinning was depressed (137 kg and 7 kg) although not significantly; and days open following twin calving was increased. In the twinning group of 367 cows with no dystocia at twinning, milk and fat production were depressed by 285 kg and 14 kg in the lactation initiated by the twinning. Days open after twinning were increased by about 22 days. These results indicate a negative economic effect of twinning on lactation performance in Holstein cattle. Increased rates of twinning via selection or artificial induction of twinning dairy cattle appear not to be desirable.

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Section: Means Insupporting

confidence: 90%

“…Effects of increased dystocia (5,9) or of prolonged calving interval following twinning (2,4,9,11) also are important considerations. The purpose of this study was to examine production of Holsteins that produced twins to estimate effects of twin pregnancy on milk and fat yields, on the subsequent lactation, and on calving interval.…”

Section: Introductionmentioning

confidence: 99%

Effects of Twinning on Lactation and Days Open in Holsteins

Chapin¹,

Vleck²

1980

Journal of Dairy Science

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“…The decline of 0-05 % fat in the twin lactation following a single birth was significantly different from the increase over the same period of 0-01 % fat among single-birth contemporaries, and accords well with the findings of Bowman and Hendy (1970). A similar difference in lactation length was also found, but the contrast was undoubtedly diminished by truncation at 305 days.…”

supporting

confidence: 86%

A note on the effect of twin births on production in the subsequent lactation

Wood¹

1975

Anim. Prod.

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SUMMARYA study of the British Friesian Cattle Society's herdbook for 1961 showed that twin births were registered from 323 cows which had borne single calves the year before, and which had 2009 contemporaries of the same age calving single births in the same two seasons and in the same herds.Least squares means of milk yield and fat percentage calculated from the truncated 305-day lactation showed that the twin mothers exceeded their contemporaries by 118±47 kg milk in lactations 2 days shorter. After correction for herd and year effects there was no difference between the twin birth lactation yield and the preceding single birth yield.There was a reduction in fat percentage of 0±06% associated with the twin birth lactation.The proportion of a sample of 194 twin mothers failing to calve again was 24±3% against 19±1% of the mothers of single calves, but no reasons for culling had been recorded.

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“…the earlier first calving and the shorter life of the cows in recent years than in the 1920's. Table 13 presents an analysis of variance of the population data for the Swedish Red and White cattle employing the same type of model as that used by BOWMAN and HENDY (1970). The repeatability of twinning (rp) in the population was estimated and since the number of calvings is fairly high, especially in the lower age groups, the estimates show a continuous series of increasing values from two to seven completed calvings in the groups.…”

Section: A Repetition and Repeatabilitymentioning

confidence: 99%

“…These problems have been discussed recently in a comprehensive review by HENDY and BOWMAN (1970). The major topic considered here is the causes of variation in the frequency of MZ and DZ twinning.…”

mentioning

confidence: 99%

Causes of variation in the frequency of monozygous and dizygous twinning in various breeds of cattle

2009

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A statistical investigation has been made comprising 12 European cattle breeds with a total of about 5.3 milj. calvings and 120,000 twin births. Season of conception has a marked influence on the frequency of twin births, one maximum corresponding to spring and another one to autumn conceptions. There are significant breed differences in the relation between age of the cows, measured in parities, and the frequency of monozygous (MZ) as well as dizygous (DZ) twin births. On an average, the DZ frequency increases more than the MZ frequency from the first to the fourth‐fifth calving; then the age‐curves show a plateauing tendency. After the first twin birth, the twinning frequency at the following calvings is 4–5 times higher than in the general population. Apparently, twinning depends on polygenic inheritance and also on various environmental influences, with a threshold for the phenotypic manifestation. It may be assumed that the underlying liability of the cows in a population to bear twins has an approximately normal distribution. The heritability of twinning has been estimated on the binomial p‐scale as well as on the x‐scale of the normal curve. On the p‐scale the heritability of twinning was found to be about 0.02 which corresponds to 0.16 on the x‐scale, although with some differences between breeds.

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The incidence, repeatability and effect on dam performance of twinning in British Friesian cattle

Cited by 19 publications

References 5 publications

Effects of Twinning on Lactation and Days Open in Holsteins

Effects of Twinning on Lactation and Days Open in Holsteins

A note on the effect of twin births on production in the subsequent lactation

Causes of variation in the frequency of monozygous and dizygous twinning in various breeds of cattle

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