scholarly journals Conformation des bovins de race Nélore (Bos indicus) au ranch Kila-département de la Cuvette en République du Congo

2020 ◽  
Vol 43:1 ◽  
pp. 7340-7349
Author(s):  
DIMI NGATSE Silvère ◽  
OGNIKA Alexis Jonas ◽  
AKOUANGO Parisse

L’objectif de l’étude a été d’apprécier la conformation et certaines mensurations de la race bovine Nélore dans le but de maitriser leurs aptitudes à la reproduction. Les animaux avaient trois (3) ans d’âge. Les mensurations et la conformation ont concernées 89 génisses et 28 taurillons en stade de reproduction, sur un troupeau de 2587 têtes. Les mensurations corporelles concernées ont été évaluées par la méthode traditionnelle à la toise et au mètre ruban. Le poids vif moyen des mâles a été de 418,97 kg ± 25,84 kg et celui des femelles de 333,67 ± 33,12 kg. La robe régulière est blanche, uniforme avec des membres sombres aux extrémités chez les mâles. La conformation indique de bonnes aptitudes bouchères et les mâles sont de grande taille. La hauteur au garrot a été de 1,54 ± 0,01 m et 1,48 ± 0,03 m pour les mâles et les femelles respectivement. La longueur scapulo-ischiale a indiqué 1,89 ± 0,03 m et 1,81 ±0,02 pour les mâles et femelles respectivement. Le périmètre thoracique de 1,82 ± 0.03 m et 1,72 ± 0,03 m respectivement pour les mâles et femelles. La liaison corrélative du poids vif a été plus marquée avec la hauteur au garrot (r= 0,926) qu’avec le périmètre thoracique (r= 0,81) et la longueur scapulo-ischiale (r= 0,730). Il est donc important que les éleveurs procèdent à l’étude des mensurations et de conformation des Nelores pour bien apprécier leurs aptitudes futures de reproductions dans une ferme. ABSTRACT The objective of the study was to highlight the morphometric characteristics and conformation of the Nélore bovine breed in order to control their breeding. The animals were all about three (3) years old. The measurements and conformation involved 89 heifers and 28 breeding bulls from a herd of 2,587 heads. The body measurements concerned were evaluated by the traditional method of the measuring board and measuring tape. The average live weight of males was 418.97 kg ± 25.84 kg and that of females 333.67 ± 33.12 kg. The Common coat colour is uniform white, with dark extremities in the males. The conformation indicates good beefing abilities and the males are large. The height at the withers was 1.54 ± 0.01 m and 1.48 ± 0.03 m for males and females respectively. The scapuloischial length of 1.89 ± 0.03 m and 1.81 ± 0.02 for males and females respectively and thoracic perimeter of 1.82 ± 0.03 m and 1.72 ± 0.03 m respectively for males and females. The correlation of body weight was more marked with the height at the withers (r = 0.926) than with the thoracic perimeter (r = 0.81) and the scapuloischial length (r = 0.730). It is therefore important that the breeders study the measurements and conformation in order to appreciate the future breeding abilities of the animals on a farm.

2016 ◽  
Vol 7 (2) ◽  
pp. 73
Author(s):  
Napoleón Mejía ◽  
Claudia Velázquez ◽  
Assefaw Tewolde

This study took place in a cattle ranch working with double-purpose cattle, in the Department of Jutiapa, Guatemala, with the objective of calibrating a model of cattle measuring tape, with body measures, during the months of April, May and July, 1993. The measures were taken from 456 cattle heads, and the measuring variables comprehended: the torax diameter (TD), the body lenghth (BL), the live weight in kilograms (LW), and the age in years (AG). Cattle food was mainly pastures of “African Star” and “Jaragua” varieties, and other natural species. The herd produces milk all year round with a daily milking, and calves suckle until eight months old. The cattle measurements information was analyzed throughout fixed-effect models, including the TD, BL and AG variables, to determine the contribution of each effect for the live weight predictions. Two lineal multiple regressive models were adjusted by natural logarithm and by base-10 for males and females respectively. The analysis determined that in the studied population, the TD, BL and AG variables can be used to predict the live weight, according to the animal’s sex.


2019 ◽  
Vol 53 (4) ◽  
pp. 325-334
Author(s):  
V. N. Peskov ◽  
N. A. Petrenko ◽  
V. Yu. Reminnyi

Abstract We study size-at-age and sexual variability of morphometric characteristics of the marsh frog. According to the size of the body, males were divided into three size-age groups (juvenis, subadultus, adultus), females — into four groups (juvenis, subadultus, adultus, adultus-I). We found that the chronological age of frogs (skeletochronology) does not always correspond to their biological age (size and proportions of the body). We noted that the semi-adult males are reliably larger than females by mean values of 26 studied morphometric characters. Males and females of “adultus” group do not differ by linear body size, significant differences were found in body proportions (7 characters). For the females of “adultus-I” group, the mean values of 26 characters are significantly larger than for “adultus” males. The results of our study showed that with the age of the marsh frog, the level of exhibition, directionality and structure of morphometric sex differences changes.


2008 ◽  
Vol 53 (No. 5) ◽  
pp. 187-194 ◽  
Author(s):  
D. Bureš ◽  
L. Bartoň ◽  
R. Zahrádková ◽  
V. Teslík ◽  
M. Fiedlerová

This study was conducted to evaluate the body weights and measurements of 86 Gascon calves and their dams. The effects of the course of parturition, parity of the dams, sex of the calves, and live- or stillborn calves were analysed. Phenotypic correlations between different measurements and calf birth weight as well as the course of parturition were calculated. Internal pelvic measurements were significantly associated with the occurrence of assisted calvings and stillborn calves. Primiparous cows had a smaller pelvic area, lower live weight, and more frequent difficulty in calving compared to older cows. A higher incidence of difficult calvings was observed in bull-calves due to their higher (<I>P</i> < 0.001) birth weight. High and significant correlation coefficients were determined between the birth weight and body measurements of the calves as well as between the calf birth weight and the course of parturition (<I>r</i> = 0.34; <I>P</i> < 0.01). Negative correlations (<I>r</i> = –0.21 to –0.30) were calculated between the internal pelvic measurements of the cows and the course of parturition score. It was concluded that the internal pelvic measurements of the dam and the size and shape of the calf were the factors influencing the course of parturition in this study to the largest extent.


2007 ◽  
Vol 40 ◽  
pp. 55-64 ◽  
Author(s):  
M. Al-Amin ◽  
A. Nahar ◽  
A.K.F.H. Bhuiyan ◽  
M.O. Faruque

SummaryNorth Bengal Grey (NBG) cattle are an important indigenous cattle genetic resource found mainly in the northern part of Bangladesh. The study was undertaken at Bogra Sadar, Shibgonj and Kahalu Upazila (sub-district) in the Bogra district. The physical and morphological characteristics, and the productive and reproductive performances of NBG cattle were studied. The coat colour of these animals is deep grey to white. The coat colour of the neck region in adult bulls was found to be generally ashy with a range of shades.The body is small, compact and less fleshy. Ear length and ear width were 18.0±0.17 and 11.0±0.21 cm, respectively. The head length average was 38.0±0.56 cm, the head width 16.0±0.17 cm, the foreleg length average 65.0±0.64 cm, the hind leg length 71.0±0.64 cm, the tail length average 71.0±0.67 cm, the horn length average 9.0±0.39 cm, the horn diameter 10.0±0.37 cm, the average teat length 5.0±0.18 cm, the teat diameter 6.0±0.22 cm, the distance betweenthe front teats 7.0±0.13 cm and the distance between the rear teats 7.0±0.13 cm. Body length, height at wither and heart girth in adult cows were 105.0il.20, 94.0+1.12 and 127.0±1.52 cm, respectively.The recorded highest peak milk production per day was 3.5±0.18 kg, lactation length was 219±6.1 days, and the dry period was 180±6.8 days. The average birth weight of calves was 18.4±0.52 kg and mature live weight of cows 241.0±4.0 kg. The age at first heat was 869±29.6 days, age at first calving 1191±19.7 days, gestation length 281±1.3 days, calving interval 442±7.4 days, postpartum heat period 110±4.2 days and the number of services per conception 1.4±0.6. About 54% of total cattle population was NBG cattle in the surveyed area of Bangladesh. The results indicated that the productive and reproductive performance of NBG cattle was better than other non-descript indigenous cattle of Bangladesh. The study further revealed an obvious need for more in-depth and objective information on wider samples of this type of indigenous cattle in order to assess the future need for conservation and improvement programs to be undertaken.


2020 ◽  
Vol 50 (5) ◽  
pp. 62-68
Author(s):  
G. M. Shkyratova ◽  
B. Z. Bazaron ◽  
T. N. Khamiruev ◽  
S. M. Dashinimaev ◽  
N. N. Melnikova

The analysis results of the current state of promising male lines of Zabaikalsky horse breed are presented, a brief description of each line is given. Research material is data from the regional archival documents and summary sheets on the appraisal of horses of pedigree farms ofTrans-BaikalTerritory(2010–2018). The following parameters of horses were studied: type, conformation, adaptive qualities, live weight, measurements (height at withers, body length, chest girth, cannon girth). On the basis of the measurements, the indices of the body build were calculated – index of format and index of blockiness. The current linear structure of Zabaikalsky horse breed is represented by seven lines that have living successors. In the genealogy of the breed, the leading lines are Argali, Kagor, Chetky and Premiere. The most numerous Argali line accounts for 21.6% of the total structure. The line is characterized by the best indicators of height at withers and length of the body, which allows the horses of this line to effectively pasture in winter. The second place in terms of the number of descendants is occupied by the Chetky line (18.9%). These animals have a curl gene in their genotype. The Premier line, whose descendants are distinguished by their tall height (up to146 cm) and long body (up to152 cm), ranks third (15.3%). The Kagor line of the black-marked coat colour type ranks fourth in terms of the number (12.7%). The latter are compact, strong and solid in constitution, with good conformation. On the basis of Argali, Kagor, Chetky and Premier lines, the intra-breed type of Zabaikalsky horses is created, distinguished by a massive constitution and good adaptability to year-round grazing and keeping.


2021 ◽  
Vol 39 (1) ◽  
pp. 169-179
Author(s):  
O. S. Sowande ◽  
B. A Orebela ◽  
O. S Iyasere

The relationships between live weight and eight body measurements of West African Dwarf (WAD) sheep were studied using 300 animals under farm condition. The animals were categorized based on age and sex. Data obtained on height at withers (HW), heart girth (HG), body length (BL), head length (HL), length of hindquarter (LHQ), width of hindquarter (WHQ), head width(HDW), and loin girth (LG) were fitted into simple linear (change in body measurement is directly proportional to weight or body size), allometric (body measurements do not necessarily change in direct proportion to weight or body size), and multiple linear regression models to predict live weight from the body measurements according to age group and sex. Results showed that live weight and body measurements of ewe were higher than that of the ram. Live weight, HG, HW, WHQ, LG, BL, LHQ, HL, and HW increased with the age of the animals. In multiple linear regression model, WHQ, LHQ, HW, HL and HDW best fit the model for sheep aged ≤1; HG, LG, BL and HDW for 2 year-old sheep; HG, BL, and HL best fit the model for sheep 3 years age group; LHQ best fit the model for sheep of 4 years of age; while HL best fits sheep that were in 5 year age category. Coefficients of determination (R2) values for linear and allometric models for predicting the live weight of WAD sheep increased with age in all the body measurements (HW, HG, BL, HL, LHQ, WHQ, HDW and LG). Sex had significant influence on the model with R2 values consistently higher in females except the models for LHQ, WHQ, LG and BL were they the same with the males. Based on R2 values, it was concluded that both linear and allometric regression models could be used to predict live weight from body measurements of WAD sheep.   


2020 ◽  
Vol 18 (1-2) ◽  
Author(s):  
Rajko Roljić ◽  
Vera Nikolić ◽  
Nebojša Savić

This paper presents the information about morphological variability and sexual dimorphism of the stone crayfish (Austropotamobius torrentium) in the area of Korana River in Mrkonjic Grad. The crayfish were caught by hand made baited traps from October 2018 to May 2019. A total of 46 crayfish were caught, of which 33 males and 13 females. The dimensions of eight morphometric characteristics: body weight (W), body length (TBL), rostrum length (ROL), rostrum width (ROW), claw length (CLL), carapace length (CPL), carapace width (CPW) and abdomen length (ABL), were analyzed, both in males and females. Also, the body condition was determined for all individuales. The measurements results of morphometric characteristics partially matched into the alredy known range of variations. These data presens first ones for the observed area. By using Mann-Whitey U-test, it was noted that there are significant differences between the sexes for W, TBL, CLL, CPL, CPW and ABL. These resuls could be explained by sexual dimorphism of the stone crayfish.


2004 ◽  
Vol 34 ◽  
pp. 17-25 ◽  
Author(s):  
G.K. Gaur ◽  
Avtar Singh ◽  
P.K. Singh ◽  
R.K. Pundir

SummaryThis study was undertaken in order to characterize the Ponwar breed and to establish its present status so that suitable breeding strategies and conservation models could be suggested for the overall improvement of the breed.The Ponwar is a draught cattle breed and is native to the Pilibhit District of Uttar Pradesh. The breeding tract lies between latitude 28°4' and 28°8' North and between longitude 79°0' and 80°4' East. The coat colour of these animals is brown or black with white patches in varying proportions. The tail switch is white in black animals and black in those having a greater proportion of white patches. The body is small, compact and non-fleshy, the face is small and narrow and the ears are small. The horns are small to medium and curve inward with pointed tips. The hump is small in females and developed in males. The tail is long and reaches to below the hock. Cows have small udders and teats. The animals of this breed possess an aggressive temperament.The milk production of the Ponwar cows is low, i.e. about 0.5 to 2.5 kg per day for a lactation period of 8 to 10 (average 8.9±0.1) months. Lactation milk yield averaged 462.5±12.1 kg. The age at first calving ranged from 40 to 60 months and the inter-calving period averaged 12.6±0.1 months. The service period in Ponwar cattle varied from 60 to 100 days. The cows remained dry for average of 110.0±2.6 days. Bullocks of this breed can transport an 800 to 1 000 kg load up to 10 kilometres easily. They can plough 0.4 hectares of land in a day working for 6 to 8 hours. Body length, height at wither and heart girth in adult cows averaged 97.1±0.5, 109.0±0.4 and 140.6±0.5 cm, respectively. The animals recorded in the different villages had similar average body measurements corresponding to their category. The survey revealed that about 21% of total cattle population was of Ponwar breed in Puranpur Tehsil. The approximate Ponwar population in the entire breeding tract was estimated as 10 667.


Author(s):  
Rajko Roljić ◽  
Vera Nikolić ◽  
Nebojša Savić

This paper presents the information about morphological variability and sex dimorphism of the Noble crayfish (Astacus astacus) in the area of the Balkana Lake in Mrkonjic Grad. The crayfish were caught by hand made baited traps from October 9nd 2018. until May 31th 2019. A total of 58 crayfish were caught, of which 38 males and 20 females. The eight morphometric characteristics: body weight (W), body length (TBL), claw length (CLL), cephalothorax length (CFL), carapace width (CPW), abdomen length (ABL), rostrum length (ROL) and rostrum width (ROW) were measured, both in males and females. Also, the body condition was determined for all specimens. The results of morphometric characteristics partially matched into the already known range of variations. These data represent first ones for the observed area. The t-test showed that there were significant differences between the sexes in W, TBL, CLL, CFL and CPW which are explained by the emphasized sex dimorphism of the noble crayfish.


2020 ◽  
Vol 40 (2) ◽  
pp. 143-150
Author(s):  
F. A. Aluko ◽  
O. E. Daramola ◽  
B. B. A. Taiwo

One hundred and twenty West African Dwarf goats were used in this study. Observations were made from twelve different towns in Yewa North, Yewa South and Abeokuta North Local Government. West African dwarf goats were evaluated for phenotypic variation at different ages ranges from 1, 2 and 3 years. Variations in live weight and body measurements such as height at wither; body length, heart girth, fore limb length, hind limb length, face length, ear length, ear width, hip width and tail length were taken. The local government areas significantly (P<0.05, 0.001) affected body length, fore limb length, ear length, ear width, hip width and live weight. Age and sex significantly (P<0.01) affected all the body measurements. The mean live weight by age groups are 6.61 + 0.31kg, 13.10 + 0.60kg and 20.18 + 0.95kg for ages 1,2 and 3 respectively. The coat colour varied from black, brown, grey to white in WAD goats. Some colours were in patches, some uniform while others were spotted


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