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  • 1
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Anatomia, histologia, embryologia 19 (1990), S. 0 
    ISSN: 1439-0264
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: On the growth of the skeleton, the body mass and the diameter of muscle fibers in the turkey (Meleagris gallopavo) from birth to day 224Growth of body mass, femur, tibiotarsus, and tarsometatarsus length as well as the diameter of muscle fibers in the M. pectoralis were measured in (Large White) female turkeys between birth and day 224.Growth-specific approximations were established with the Janoschek function as modified by Sager (1978) and with the Logistic function. While the Janoschek function fairly described the growth of the turkey, the Logistic function throughout gave beginning values that were too high and theoretical end values that were too low. Of the five growth parameters that were measured, the diameter of the muscle fibers showed its maximal rate of growth first on day 21. The following decrease in growth rate took the following sequence: length of tarsometatarsus, femur, and tibiotarsus, diameter of muscle fibers, body mass. 99 % of growth had occurred in the tarsometatarsus length on day 109, femur length on day 117, tibiotarsus length on day 138, diameter of muscle fibers on day 166, and the body mass on day 231. A comparison of this growth with that of other domestic fowl showed close relationships between the way turkeys and chickens grow.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Science, Ltd
    Anatomia, histologia, embryologia 28 (1999), S. 0 
    ISSN: 1439-0264
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: The postnatal skeletal and body weight growth of the beagleGrowth of beagles is described on the basis of body weight and 14 bone measures. Eighteen male and 19 female dogs were investigated at 14 different ages from birth to the 13th month of life. Characteristics of the growth curves were evaluated using the modified Janoschek growth curve. For the classification into dwarfish, low, normal, big and gigantic growth, the growth curves are presented with percentiles. The arithmetic means and standard deviations for both sexes are presented in tables. Additionally, the degrees of maturity at birth (relative proportion of final weight or bone measure), the point of inflection for the growth curve, the times to grow to 50 and 95% of the final measures, and the asymptotic measures are also presented in tables. Sex differences in growth for the body weight and bone measures are discussed. Growth differences between large and small dog breeds are considered. The conclusion is drawn that the feeding of dogs has to be adapted to the growth course.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Anatomia, histologia, embryologia 25 (1996), S. 0 
    ISSN: 1439-0264
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Age-related changes in motor endplates were studied in the fibularis longus, semitendinosus and longissimus muscles in pigs. They develop from small, compact AChE-active figures in fetuses to typical myoneuronal synapses with a branched subsynaptical structure of AChE-active units. High correlations were found between size of endplates and both myofibre diameter and body mass. Growth analyses with respect to age, as well as allometrical approaches, showed that endplate growth slightly precedes that of myofibres, with both having similar growth patterns. The morphological changes, however, imply that the increment of synaptical area could lag behind that of myofibres.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Anatomia, histologia, embryologia 24 (1995), S. 0 
    ISSN: 1439-0264
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Das Längenwachstum von Humerus (H), Ulna (U), Femur (F), Tibiotarsus (TT) und Tarsometatarsus (TMT) von Stock-, Peking- und Moschusenten sowie einer Kreuzung aus letzteren wurde zwischen Schlupf und 154. d analysiert. Die Altersklassenmittelwerte wurden durch die modifizierte Janoschek-Funktion approximiert. H und U weisen zum Schlupf die geringsten absoluten und prozentualen (auf den jeweiligen Adultwert bezogen) Längen auf. Innerhalb der Gliedmaßen finden sich weitestgehend identische Wachstumsmuster, wobei F, TT und TMT die höchsten Schlupfreifegrade, deutlich frühere Zuwachsmaxima und ein schnelleres Abwachsen zeigen. Bei den adulten Tieren ergibt sich die Längenrelation H 〉TT 〉 U 〉 F 〉 TMT, bei den Pekinglinien ist jedoch eine Verlängerung des TT zu verzeichnen, so daß dieser vor dem H rangiert. Diese ontogenetischen Proportionsverschiebungen führen zu Überschneidungen der absoluten Wachstumskurven, während bei den prozentualen nur die des F die des TT überkreuzt. Evolutive, domestikative und ökologische Gesichtspunkte dieser Beziehungen werden diskutiert.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Science, Ltd
    Anatomia, histologia, embryologia 28 (1999), S. 0 
    ISSN: 1439-0264
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Growth of the cloacal bursa (bursa of Fabricius) and spleen in ducksThe growth in weight of both the bursa of Fabricius and the spleen was investigated in different stocks of ducks between hatching and 154 days of age. The data were analysed by fitting the Janoschek growth curve and the allometric formula. Both organs showed rapid growth to their maximum dimensions and early points of inflection. The regression of the cloacal bursa started at about 12 weeks of age in Pekins and Mallards. In the Muscovy, the involution begins beyond the period of investigation. Allometrically, a biphasic relationship was found. Starting with positive allometry, the allometric exponent decreased to negative or isometric (Muscovies) values within the second week of age. If the organ weights are compared on the basis of these allometric relationships, Pekins had bursa weights that were about 30 % higher than those in Mallards. For the spleen, there was no difference between wild and domesticated ducks.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Anatomia, histologia, embryologia 23 (1994), S. 0 
    ISSN: 1439-0264
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Anatomia, histologia, embryologia 19 (1990), S. 0 
    ISSN: 1439-0264
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: The capillarization of the M. pectoralis of the Turkey (Meleagris gallopavo) from birth do day 280The capillarization of the M. pectoralis was examined in the turkey as it changed with age. Examined was the density of the muscles fibers (per mm2), the density of the capillaries (per mm2) and the quotient muscle fibers/capillaries. In accordance with the sequence of the original data four functions of organismic growth (slightly altered) were utilized for the approximation of the data for descending amounts: Pütter/Bertalanffy (1920, 1934); Richards (1959; Janoschek enlarged after Sager (1980 and Richards enlarged after Sager (1980). The approximations were made via nonlinear regressions, whereby the sum of the error amounts and the sums of teh error squares served as criteria of quality. The results including the deduced initial and end amounts are combined in tables which also contain the parameter of the way the computations were conducted.
    Type of Medium: Electronic Resource
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