Results 261 to 270 of about 162,152 (289)
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Theoretical and Applied Genetics, 1984
Four lines of mice were formed from a common base population and selected for 37 generations for either increased 3-week weight (weaning weight), 6-week weight, 3-6 week gain, or maintained as a randomly bred control line. Realised heritability estimates for short-term (long-term) responses were 0.33±0.20 (0.07±0.10), 0.46±0.14 (0.26±0.09), 0.36±0.14 ...
R L, Baker, E H, Cox, A H, Carter
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Four lines of mice were formed from a common base population and selected for 37 generations for either increased 3-week weight (weaning weight), 6-week weight, 3-6 week gain, or maintained as a randomly bred control line. Realised heritability estimates for short-term (long-term) responses were 0.33±0.20 (0.07±0.10), 0.46±0.14 (0.26±0.09), 0.36±0.14 ...
R L, Baker, E H, Cox, A H, Carter
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Adjustment factors for lamb weaning weight
New Zealand Journal of Agricultural Research, 1985Nine methods of adjusting lamb weaning weight for the effects of age-of-dam, sex, birth-rearing rank, and weaning age were compared.
E.D. Eikje, D.L. Johnson
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Australian Journal of Experimental Agriculture and Animal Husbandry, 1973
Growth data and feed intakes were recorded from 333 male, Friesian calves from birth to 11 weeks of age. The calves came from seven experiments. All calves were weaned from milk replacer at five weeks and fed a starter from two to eleven weeks of age. The average birth weight of the calves was 42.6 kg, they gained 13.6 kg to weaning at five weeks and ...
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Growth data and feed intakes were recorded from 333 male, Friesian calves from birth to 11 weeks of age. The calves came from seven experiments. All calves were weaned from milk replacer at five weeks and fed a starter from two to eleven weeks of age. The average birth weight of the calves was 42.6 kg, they gained 13.6 kg to weaning at five weeks and ...
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The relation of weaning weight to birth weight of lambs
Proceedings of the British Society of Animal Production, 1955It is now a well established fact that high-level nutrition of the in-lamb ewe during the later stages of pregnancy results in heavy lambs of high vitality at birth and in good milking ewes. On the other hand, when ewes are poorly fed during the same period, or suffer a check, they produce underweight lambs of low vitality and have poor milk yields ...
W. Thomson, I. McDonald
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Growth and threshold weaning weights among captive rhesus macaques
American Journal of Physical Anthropology, 1995AbstractInterspecific analyses of infant growth and the time to maternal reconception (or weaning) demonstrate a consistent threshold for weaning weight at close to four times neonate weight, irrespective of the duration of lactation (Lee et al., [1991] J. Zool. Lond.225:99–114).
J E, Bowman, P C, Lee
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Factors associated with average pig weight at weaning on farms using early weaning
Animal Science, 1998AbstractThe objective of this study was to investigate the effect of various factors on average pig weight at weaning on farms using early weaning. Farms were selected based on average weaning age and whether they recorded lactation food intake and litter weights at weaning.
Y. Koketsu, G. D. Dial
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Early weaning is related to weight and rate of weight gain in infancy
Child: Care, Health and Development, 2007AbstractBackground Evidence relating to the effect of early weaning on infant weight and weight gain is conflicting. The aim of this paper is to compare weight and weight gain in two groups of infants; one group weaned before 4 months (early weaned), the other weaned at 4 months or after.Methods Feeding practices were assessed through semistructured ...
Sloan, Seaneen +4 more
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Sire × herd interactions for weaning weight in beef cattle
Journal of Animal Science, 1992Weaning weight records of 44,357 Australian Angus calves produced by 1,020 sires in 90 herds were used to evaluate the importance of sire x herd interactions. Models fitted fixed effects of contemporary group (herd-year-date of weighing subclass), sex, calf age, and dam age and random effects of sire or of sire and sire x herd interaction using REML ...
D R, Notter, B, Tier, K, Meyer
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HERITABILITIES OF WEANING WEIGHT, YEARLING WEIGHT, AND CLEAN FLEECE WEIGHT IN RANGE ROMNELET SHEEP
Canadian Journal of Animal Science, 1961Heritabilities of weaning weight, yearling weight and clean fleece weight for range Romnelet sheep were estimated by the intra-sire regression of daughter on dam from data adjusted for year effects, age of dam, type of birth and rearing and age of lamb or yearling ewe.
J. A. Vesely, S. B. Slen
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SOURCES OF VARIATION IN BEEF CATTLE WEANING WEIGHT
Canadian Journal of Animal Science, 1990Milk production, body condition, body weight and individual feed records for 196 2-yr-old heifers and their calves were used to evaluate sources of variation in weaning weight and its two major components, total energy consumption for the year and efficiency of energy use, defined as weaning weight divided by total energy for cow and calf.
C. A. DINKEL +2 more
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