Live Weight and Milk-Energy Yield in the Nebraska Station Dairy Herd

Davis, H. P.; Morgan, R. F.; Gaines, W.L.

doi:10.3168/jds.s0022-0302(43)92762-6

Cited by 22 publications

(7 citation statements)

References 8 publications

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“…The measurement of heart girth and body weight showed that body fatness or body-weight loss affected correlations between body weight and yield. This finding confirmed the result of Davis et al (1943) (Miller and Hooven, 1969), weights taken at variable times after freshening show a negative component of covariance with yield.…”

Section: Introductionsupporting

confidence: 86%

Influence of Body Size During Lactation on Level of Milk Production

Hickman¹,

Lee²,

Slen³

et al. 1971

Can. J. Anim. Sci.

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Section: Introductionsupporting

confidence: 86%

Influence of Body Size During Lactation on Level of Milk Production

Hickman¹,

Lee²,

Slen³

et al. 1971

Can. J. Anim. Sci.

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“…One of the most comprehensive early studies on the relationship of milk yield to body weight remains that of Davis, Morgan and Gaines (1943), even if one disagrees with their conclusions. In this study, the authors recommend the use of FCM up to 8 months of lactation divided by body weight taken shortly after calving, as a criterion of dairy development.…”

Section: Genetic Differences Within Breedsmentioning

confidence: 99%

Genetic differences in milk production in relation to mature body weight

Taylor¹

1973

Proc. Br. Soc. Anim. Prod (1972)

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“…Davis, Morgan and Gaines (1943) showed that the correlation between body weight and lactation milk yield declines continuously as the weighing of the cows is advanced from the beginning towards the end of the lactation period. Between calf weaning weight and gain (or loss) of dam's weight during lactation there was a highly significant correlation of -0-15 and regression of -0-104 kg per kg.…”

Section: Relationship Between Dam Body Weight and Progeny Performancementioning

confidence: 99%

Crossbreeding beef cattle in Western Uganda. 1. Performance of Ankole, Boran and Zebu Cows

1971

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SUMMARYIn a new ranching area of Uganda recently cleared of trypanosomiasis, with a high level of disease control, adequate water supplies and extensive grazing on free range, three dam breeds, the indigenous Ankole and Zebu, and the Boran from Kenya, were mated to Boran, Angus and Red Poll sires.Under artificial insemination, at least 10 % fewer cows were detected on heat than under natural service, and 15% fewer artificially inseminated cows actually produced calves than did naturally served cows. The introduced Boran females were not inferior in calving percentage to the indigenous Ankole and Zebu.Relationships between dam body weight and progeny performance were investigated. The introduced Boran breeding cows were able to maintain their body weight as least as well as the indigenous Ankole and Zebu cows. While cows which calved regularly and reared their calves could not maintain body weight, it was found that heavier cows conceived at a higher rate than lighter cows, cows heavier at parturition weaned heavier calves than lighter cows, and cows that reared heavier calves lost more, or gained less, body weight than cows that reared lighter calves. It was therefore indicated that investigations into the reduction of lactation stress on cows by such methods as earlier weaning of calves, mating at the most suitable time of year, and possible nutritional supplementation at a stage in the cycle, should be commenced.

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Live Weight and Milk-Energy Yield in the Nebraska Station Dairy Herd

Cited by 22 publications

References 8 publications

Influence of Body Size During Lactation on Level of Milk Production

Influence of Body Size During Lactation on Level of Milk Production

Genetic differences in milk production in relation to mature body weight

Crossbreeding beef cattle in Western Uganda. 1. Performance of Ankole, Boran and Zebu Cows

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