scholarly journals Allometric Growth Patterns of Body and Carcass Components in Ardhi Goat

2013 ◽  
Vol 5 (5) ◽  
pp. 183-189 ◽  
Author(s):  
A. Al-Owaimer ◽  
G. Suliman ◽  
A. El-Waziry ◽  
H. Metwally ◽  
M. Abouheif
Keyword(s):  
Growth Patterns ◽  
Allometric Growth

scholarly journals Allometric growth patterns in hatchery-reared larvae of the catfish Lophiosilurus alexandri (Pisces: Pseudopimelodidae)

2014 ◽  
Vol 66 (1) ◽  
pp. 284-288 ◽  
Author(s):  
R.J. Guimarães-Cruz ◽  
V.C. Veloso-Júnior ◽  
N.G. Sales ◽  
D.A.A. Oliveira ◽  
J.E. Santos
Keyword(s):  
Standard Length ◽  
Growth Analysis ◽  
Body Height ◽  
Growth Patterns ◽  
Head Length ◽  
Allometric Growth ◽  
Positive Relation ◽  
Initial Development ◽  
Eye Diameter ◽  
Head Height

The aim of the present study was to characterize the relationships that occur between morphometric variables of larvae of Lophiosilurus alexandri Steindachner, 1876 through their allometric growth analysis. Total length, head length and body height were correlated with standard length, head height and body height, as well as eye diameter and head height with head length. The results revealed allometric positive relation during the initial development, where the b coefficient varied between 1.10 and 2.81. The variable pre-anal distance in relation to the standard length and the snout length in relation to the head length revealed an allometric negative relation, where the b coefficient was 0.85 and 0.94, respectively.

scholarly journals Length-weight relationship of Threadfin Bream (Nemipterus sp.) in Village Malang Rapat Waters, Bintan Regency, Riau Island

2020 ◽  
Vol 13 (2) ◽  
pp. 449
Author(s):  
Rapita Rapita ◽  
Susiana Susiana ◽  
Rochmady Rochmady
Keyword(s):  
Growth Patterns ◽  
Allometric Growth ◽  
Fish Resources ◽  
Weight Relationship ◽  
Relationship Of

Village Malang Rapat waters are have the potential and habitat of kurisi fish resources (Nemipterus sp.). The research was to determine the length-weight relationship of kurisi fish (Nemipterus sp.) in Village Malang Rapat. Sampling of kurisi fish (Nemipterus sp.) in two months (October-November 2020) is taken once a week based on fishing grounds and habitat. Length-weight relationship of female and male kurisi fish (Nemipterus sp.) were y = 1,1568x2,0659 and y = 1,2123x1,8971 respectively, based on this value show that female and male kurisi fish (Nemipterus sp.) in Village Malang Rapat waters have negative allometric growth patterns (b < 3).

scholarly journals Allometric Growth Patterns of Fine Scale Fish Larvae and Its Ecological Significance

2020 ◽  
Vol 1575 ◽  
pp. 012157
Author(s):  
Guiqiang Yang ◽  
Zhanquan Wang ◽  
Jie He ◽  
Wentong Li ◽  
Ding Yuan
Keyword(s):  
Fish Larvae ◽  
Growth Patterns ◽  
Fine Scale ◽  
Ecological Significance ◽  
Allometric Growth

Growth Patterns of the Rabbit Masticatory Muscles

1990 ◽  
Vol 69 (1) ◽  
pp. 20-25 ◽  
Author(s):  
G.E.J. Langenbach ◽  
W.A. Weijs
Keyword(s):  
Fiber Length ◽  
Masticatory Muscles ◽  
Growth Patterns ◽  
Weight Increase ◽  
Allometric Growth ◽  
Muscle Weight ◽  
Temporal Muscle ◽  
Functional Relationships ◽  
Facial Skull ◽  
Total Muscle

The post-natal growth of the masticatory muscles in the rabbit was examined. By means of anatomical dissection and measurement, total muscle length, muscle fiber length, and muscle weight were determined in animals varying in age between one week and 36 months and exhibiting a 50-fold weight increase. Growth data were fitted by linear regression models with facial skull length used as the independent variable. Many deviations occur from size-dependent isometric growth. The muscles can be divided into three groups, according to their pattern of weight increase: The jaw openers grow negatively allometrically, and their contribution to total muscle weight decreases with time; the temporal muscle grows negatively allometrically but its relative weight proportion remains about the same; the masseter and medial pterygoid muscles have positively allometric growth, and their contribution to total muscle weight increases strongly. Generally, the length of the muscles and of their fibers increases at lower rates than does the length of the facial skull. After weaning, the rate of longitudinal growth drops steeply in some muscles. Total fiber area or physiological cross-section (PCS) of muscles is computed from weight and fiber length. It increases positively allometrically in the jaw closers and negatively allometrically in the jaw openers. In the lateral pterygoid muscle, the increase of PCS changes from negatively- to positively-allometric growth after weaning. The study demonstrates that individual oral muscles follow different patterns of longitudinal and cross-sectional growth, so that their functional capacities (force, range of contraction) and mutual functional relationships are age-dependent.

Influence of breed and sex on the allometric growth patterns of major bovine tissues

1971 ◽  
Vol 13 (2) ◽  
pp. 219-227 ◽  
Author(s):  
H. Mukhoty ◽  
R. T. Berg
Keyword(s):  
Sex Differences ◽  
Marked Effect ◽  
Relative Rate ◽  
Allometric Equation ◽  
Growth Patterns ◽  
Allometric Growth ◽  
Relative Growth ◽  
Stages Of Growth ◽  
Breed Group ◽  
Using Data

SUMMARYThe influence of breed and sex on relative growth patterns of muscle, bone and fat in beef cattle has been investigated. Comparisons were made of growth coefficients estimated using Huxley's (1932) allometric equation relating muscle, bone or fat to muscle plus bone using data from the dissection of half carcasses of 63 young bulls, 106 steers and 22 heifers representing a number of breed groups. Growth coefficients for muscle and for bone were found to be similar among different breed groups of bulls, steers and heifers. The proportion of muscle increased and that of bone decreased as the size of animal, measured by muscle plus bone, increased. Muscle and bone weights adjusted to common muscle plus bone weights were significantly different among breed groups within sex. Differences in amount of muscle relative to bone were therefore established at earlier stages of growth and maintained over the period represented in the present study.Growth coefficients for fat were significantly different among breed groups within sexes.Sex within breed group had no statistically significant influence on growth coefficients for muscle or for bone. Muscle and bone weights adjusted to a common muscle plus bone weight were similar for sex groups within all breed group comparisons. Sex did not have a marked effect on rate of fattening since differences between growth coefficients for fat (between sexes, within breeds) were not statistically significant—although in all comparisons growth coefficients for fat were lowest for bulls, intermediate for steers and highest for heifers. Sexes differed in weight of fat adjusted to common muscle plus bone weight, heifers being fatter than steers and steers fatter than bulls, a difference probably resulting more from early onset of the fattening phase in heifers, followed by steers, rather than relative rate of fattening.

scholarly journals Sexual Allometric Monomorphism in Araucan Pig from Colombia: Preliminary Results

Animals ◽  
2020 ◽  
Vol 10 (10) ◽  
pp. 1763
Author(s):  
Arcesio Salamanca-Carreño ◽  
Jordi Jordana-Vidal ◽  
René Alejandro Crosby-Granados ◽  
José Norberto Arias-Landazábal ◽  
Pere M. Parés-Casanova
Keyword(s):  
Body Size ◽  
Quantitative Traits ◽  
Growth Patterns ◽  
Environmental Adaptation ◽  
Sexual Differences ◽  
Multivariate Approach ◽  
Allometric Growth ◽  
Preliminary Results ◽  
Face Width ◽  
Males And Females

This study aimed to evaluate the allometric growth of the Araucan pig breed, a creole breed from Arauca, East Colombia, locally known as “Sabaneros”, in relation to different quantitative traits and considering genders separately. To do this, a total of 31 male and 27 female Araucan pigs, ranging from 4 to 48 months of age, were studied in order to evaluate their growth patterns, using a multivariate approach. Animals belonged to different farms (“fincas”) of the Department of Arauca, Colombia. From each individual, 10 quantitative traits were obtained: face width, croup height, croup length, croup width, tail base height, hock height, loin height, cannon length, and length and width of ear. Our results, which must be interpreted as preliminary, showed that the Araucan pig is allometrically monomorphic as sexual differences do not increase with body size. We suggest that although males and females have evidently different reproductive roles, during growth they shift the allocation of energy to structures linked to environmental adaptation rather than those linked to reproduction.

An Allometric Analysis of the US Urban System: 1960 – 80

1989 ◽  
Vol 21 (4) ◽  
pp. 463-476 ◽  
Author(s):  
Y Lee
Keyword(s):  
Population Size ◽  
Urban System ◽  
Growth Patterns ◽  
Allometric Growth ◽  
Land Area ◽  
Density Profiles ◽  
The Us ◽  
The Usa ◽  
Allometric Analysis ◽  
The Relationship

In this paper the relationship between urban population size and land area of urbanized areas of the USA in 1960, 1970, and 1980 is analyzed by means of the allometric growth law. The US urban system of each of the above time periods is disaggregated into seven population-size classes and nine geographic regions. A total of fifty-one equations are estimated. Although the statistical results of the allometric equations classified according to population are not satisfactory, the equations classified according to region are superior. Among the major findings for the US urban system are: the existence of the dynamic similarity model, the existence of negative allometry, the lack of support for the hypothesized relationship between the allometric coefficients and the changes in the population density profiles, and that continental USA is divided into regions of ‘negative allometric’ or ‘toward isometric’ and ‘stable’ or ‘unstable’ growth patterns.

The combination of bivariate and multivariate methods to analyze character synchronization and early allometric growth patterns in the stellate sturgeon (Acipenser stellatus) as tools for better understanding larval behavior

2017 ◽  
Vol 74 (10) ◽  
pp. 1528-1537 ◽  
Author(s):  
Hamid Eshaghzadeh ◽  
Carles Alcaraz ◽  
Arash Akbarzadeh ◽  
Enric Gisbert
Keyword(s):  
Principal Component ◽  
Dispersal Distance ◽  
Larval Period ◽  
Growth Patterns ◽  
Allometric Growth ◽  
Morphometric Characters ◽  
Body Regions ◽  
Acipenser Stellatus ◽  
Juvenile Stages ◽  
Median Fins

Multivariate allometry patterns and length at metamorphosis (Lm) were determined in Acipenser stellatus by means of principal component analysis from 12 morphometric characters. The multivariate analysis differentiated three growth stanzas: the prelarval, larval, and early juvenile stages. The prelarval stage comprised the period from hatching (9.7 mm in total length, TL) to the transition to exogenous feeding (17.7 mm TL, Lm1), a period characterized by yolk sac depletion and fast growth of the anterior and posterior body regions. These changes coincided with the development of sensory, feeding, respiratory, and swimming systems to improve foraging behavior and predator avoidance. During the larval period (17.7–52.8 mm, Lm1–Lm2), specimens reached a juvenile phenotype characterized by the development of median fins, elongation and flattening of the snout and formation of bony scutes, and the improvement of their swimming capacities, allowing larvae to regulate their dispersal distance from the spawning grounds. The end of the larval period and acquisition of the juvenile phenotype were found after Lm2 when some variables reached isometry or even displayed a negative allometric growth.

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