scholarly journals Effect of body weight of laying hens on production traits of broiler parents

2017 ◽  
Vol 33 (2) ◽  
pp. 201-209
Author(s):  
Vladan Djermanovic ◽  
Sreten Mitrovic ◽  
Milena Milojevic
Keyword(s):  
Body Weight ◽  
Laying Hens ◽  
Correlation Coefficients ◽  
The Body ◽  
Production Cycle ◽  
Productive Capacity ◽  
Production Traits ◽  
Phenotype Correlation ◽  
The Difference ◽  
Cycle 24

Certain investigations have been conducted in two broiler breeder flocks of Ross 308 and Cobb 500 hybrids. At the beginning of the production cycle (24 weeks of age), an average laying hens? body weight of 2680.40 g was found in the case of Ross 308 hybrid, and 2697.80 g in the case of Cobb 500 hybrid. During 42nd week of age (the middle of the production cycle), the body weight of laying hens was 3565.10 g (Ross 308) and 3599.05 g (Cobb 500), while at the end of the production cycle (61 weeks of age) the body weight of laying hens of Ross 308 hybrid was 3841.50 g, and 3850.00 g of Cobb 500. Identified differences in body weight of laying hens (17.40 g, 33.95 g, 8.50 g) in certain periods of the production cycle, as well as the difference in body weight of laying hens for the entire production cycle (23.26 g) were not statistically significant (P>0.05). More specific observation of the effect of body weight of laying hens on productive capacity of broiler breeders was determined by calculating the coefficients of phenotype correlation between the indicators studied. Thus, statistically significant (P<0.001, P<0.01, P<0.05) coefficients of phenotype correlation between the body weight of laying hens and the majority of production indicators have been determined, while statistically significant (P<0.001, P<0.01, P<0.05) correlation coefficients between the body weight of laying hens and the intensity of laying capacity for hatching and fertilized eggs have been determined, but for a shorter period of the production cycle.

scholarly journals Phenotypic correlation of hens body weight and reproductive traits of broiler parents

2016 ◽  
Vol 32 (2) ◽  
pp. 175-183
Author(s):  
Vladan Djermanovic ◽  
Sreten Mitrovic ◽  
Zivan Jokic ◽  
Goran Stanisic
Keyword(s):  
Body Weight ◽  
Correlation Coefficients ◽  
Reproductive Traits ◽  
Phenotypic Correlation ◽  
Production Cycle ◽  
The Difference ◽  
The Impact

Examinations were conducted in two flocks of broiler parents? hybrids Ross 308 and Cobb 500. At the beginning of the production cycle (24th weeks of age) was determined that the average hens body weight of hybrid Ross 308 was 2680.40 g, and to hybrid Cobb 500 was 2697.80 g. At 42nd weeks of age (middle of the production cycle) hens body weight was 3565.10 g (Ross 308) and 3599.05 g (Cobb 500), while at the end of the production cycle (61st weeks of age) hens body weight of hybrid Ross 308 was 3841.50 g, and to the Cobb 500 was 3850.00 g. Determined differences of hens body weight (17.40 g, 33.95 g and 8.50 g) in specific periods of the production cycle, and the difference in hens body weight for the entire cycle (23.26 g) weren?t statistically significant (P>0.05). Specific consideration of the impact of hens? body weight on reproductive performances of broiler parents was determined by calculating the coefficients of phenotypic correlation among the tested indicators. Thus, between hens body weight and most reproductive indicators of broiler parents were determined statistically very significant (P<0.001) coefficients of phenotypic correlation, while between hens body weight and the percentages of chickens feasibility from fertilized eggs were determined significant (P<0.001; P<0.01; P<0.05) correlation coefficients for a slightly shorter period than anticipated production cycle.

Growth performance, correlation and regression estimates of seven-chicken strains in South-Western Nigeria

2020 ◽  
Vol 45 (2) ◽  
pp. 40-48
Author(s):  
A. J. Atansuyi ◽  
U. C. Ihendu ◽  
C. A. Chineke
Keyword(s):  
Body Weight ◽  
Growth Performance ◽  
Correlation Coefficients ◽  
Tail Length ◽  
Experimental Period ◽  
The Body ◽  
Coefficient Of Determination ◽  
Indigenous Chicken ◽  
Randomized Design ◽  
Study Results

This study was conducted to determine the growth performance, correlation and regression estimates of seven-chicken strains in South-western Nigeria using a total of 300 day-old chicks. The birds were divided into seven groups based on their strain. The seven strains are Normal feather (NF), Fulani ecotype (FE), Frizzle feather (FF), naked neck (NN) and Transylvania indigenous strains while Hubbard and Marshal were meat-type exotic chickens. There were forty- five (45) unsexed day-old chicks in each strain except the Frizzle feather that were 30 in number. Completely randomized design (CRD) was used for the trial that lasted for 8 weeks. The birds were fed experimental diets ad libitum throughout the period of the study. Results showed that there were significant differences (p<0.05) in the initial and final weights of the birds. It was observed that exotic strains weighed heavier (3569.73gHB) than their indigenous counterparts (1391.11gNF). However, the Fulani ecotype weighed heaviest (1840.99g) among Nigeria indigenous strains during the experimental period. This showed that FE strains are generally heavy breed chicken and could be incorporated into a meat producing indigenous chicken if improved upon. The result of the correlation coefficients showed that a very strong, positive and highly significant (P<0.001) relationship existed between body weights and linear body measurements as most of the values are (>0.40). All the body parameter examined had significant (p<0.01) and direct relationship with the body weight. Shoulder-to-tail length (STL) had the highest coefficient of 0.98.The high correlation estimates obtained in this study could be as a result of pleiotropy, heterozygosity or linkage of genes in the birds. The three functions were highly significant (p<0.05) for all the parameters studied. This shows that the functions well described the parameters. On the basis of coefficient of determination (R ), the body weight of poultry birds at any age can be predicted most accurately with BRG using cubic function.

scholarly journals Morphological characterization of Arab and Oromo goats in northwestern Ethiopia

2021 ◽  
Vol 10 (1) ◽  
Author(s):  
Oumer Sheriff ◽  
Kefyalew Alemayehu ◽  
Aynalem Haile
Keyword(s):  
Body Weight ◽  
Coat Color ◽  
Strong Association ◽  
Correlation Coefficients ◽  
Field Research ◽  
Morphological Characterization ◽  
The Body ◽  
Regression Equations ◽  
Body Measurements ◽  
Chest Girth

Abstract Background An exploratory field research was conducted in northwestern Ethiopia, to characterize the morphological features of Arab and Oromo goat populations as an input to design community-based breeding programs. Ten qualitative and nine quantitative traits were considered from 747 randomly selected goats. All data collected during the study period were analyzed using R statistical software. Results Plain white coat color was predominantly observed in Arab goats (33.72%) while plain brown (deep and light) coat color was the most frequent in Oromo goats (27.81%). The morphometric measurements indicated that Oromo goats have significantly higher body weight and linear body measurements than Arab goats. Positive, strong and highly significant correlations were obtained between body weight and most of the body measurements in both goat populations. The highest correlation coefficients of chest girth with body weight for Arab (r  =  0.95) and Oromo (r  =  0.92) goat populations demonstrated a strong association between these variables. Live body weight could be predicted with regression equations of y  =  − 33.65  +  0.89  ×  for Arab goats (R2  =  90) and y  =  − 37.55  +  0.94  ×  for Oromo goats (R2  =  85), where y and x are body weight and chest girth, respectively, in these goat types. Conclusions The morphological variations obtained in this study could be complemented by performance data and molecular characterization using DNA markers to guide the overall goat conservation and formulation of appropriate breeding and selection strategies.

scholarly journals The Influence of the Mineral-Microbial Preparation on Ammonia Concentration and Productivity in Laying Hens Houses

Atmosphere ◽  
2019 ◽  
Vol 10 (12) ◽  
pp. 751 ◽  
Author(s):  
Remigiusz Gałęcki ◽  
Michał Dąbrowski ◽  
Tadeusz Bakuła ◽  
Kazimierz Obremski ◽  
Adriana Nowak ◽  
...  
Keyword(s):  
Body Weight ◽  
Linear Correlation ◽  
Egg Production ◽  
Laying Hens ◽  
Animal Health ◽  
The Body ◽  
Control Group ◽  
Microbial Composition ◽  
Experimental Group ◽  
Campylobacter Spp

The aim of this study was to evaluate the influence of the biopreparation Deodoric® on ammonia (NH3) concentration, performance, and hygiene standards in laying hen (ROSS-308) production. Statistically significant differences in NH3 concentration and the body weight of laying hens were observed between the control group (C) and the experimental group (E) where Deodoric® was applied at the set dose. In the control group, an increase in NH3 concentration could have contributed to the decrease in the body weight of laying hens, egg production, and % hen day egg production, whereas no such correlations were observed in the experimental group. A moderate linear correlation between NH3 concentration vs. humidity (r = 0.68), air flow (r = 0.48) and weakly linear correlation between NH3 concentration and age of birds (r = 0.27) was noted in group C. In group E, NH3 concentration vs. temperature (r = 0.27) and humidity (r = 0.14) were weakly correlated. Statistical analysis of changes in the microbial counts isolated from manure revealed a significant decrease of mesophilic microorganisms on day 28 decrease of Campylobacter spp. days 14 and 84 in group E. However, for the entire experimental model no statistically significant changes in the number of Campylobacter spp. and mesophilic bacteria were found. The tested preparation did not cause changes in the microbial composition of tissue swabs. Deodoric® contributes to animal welfare by reducing the ammonia concentrations in poultry houses. It is also recommended for use in poultry farms to improve animal health and performance and to generate benefits for producers.

Genetic studies of South Australian Merino sheep. 2. Environmental effects on wool and body traits at 15-16 months of age

1981 ◽  
Vol 32 (4) ◽  
pp. 657 ◽  
Author(s):  
IP Gregory ◽  
RW Ponzoni
Keyword(s):  
Body Weight ◽  
Surface Area ◽  
Multiple Birth ◽  
Production Traits ◽  
Merino Sheep ◽  
Main Production ◽  
The Difference ◽  
Fleece Weight ◽  
Main Components ◽  
Australian Merino

The effects of years, sex, type of birth (i.e. whether or not multiple birth) and age of dam on 26 wool and body traits of South Australian Merino sheep were estimated by least-squares analysis. Years and sex had highly significant effects on all traits. Of the main production traits, type of birth had a significant effect on body weight, greasy and clean fleece weight and total wool follicle number, while age of dam only had a significant effect on body weight and greasy fleece weight. The possible consequences of failing to correct body weight and greasy and clean fleece weights for type of birth and age of dam were considered and it was concluded that, although in some years correction of these traits may not be warranted, in other years correction may be necessary to prevent selection against fecundity and an increase in the generation interval. The main components contributing to the 6.0 % difference between fleece weights of singles and twins were surface area, total follicle number and wrinkle score. The difference between fleece weights of animals from older ewes and animals from maidens was only 1.5 %; surface area was the main contributor to this deviation.

scholarly journals Effect of certain haematinics on body weight and haemato-biochemical changes in laboratory mice

1970 ◽  
pp. 103-105
Author(s):  
M Jahan ◽  
N Ahmad ◽  
M Myenuddin
Keyword(s):  
Body Weight ◽  
Vitamin B12 ◽  
Biochemical Changes ◽  
The Body ◽  
Treatment Groups ◽  
Group A ◽  
The Difference ◽  
Group B ◽  
Physiology Laboratory ◽  
Hb Concentration

A total of 24, six weeks old mice were used to study the body weight and haemato-biochemical changes following administering of different haematinics (CuSO4, FeSO4 and Vitamin B12). The experiment was performed in Physiology laboratory, Department of Physiology, Faculty of Veterinary Science, Bangladesh Agricultural University, Mymensingh, from February to March 2006. They were randomly assigned to one of four equal groups (n = 6). In addition to normal rat pellets Group A was supplemented with CuSO4 @ 0.6mg/mice/day orally, Group B with FeSO4 @ 1.2mg/mice/day orally, and Group C with Vitamin B12 (Cytamin®, Glaxo) @ 0.004mg/mice intramuscularly at every 7 days. Group D was considered as control and was also supplemented with rat pellets. Increased body weight was observed in all haematinic treated mice but group B had a significant (p < 0.05) higher weight gain compared to the control. TEC and PCV increased significantly (p < 0.05) in all the treatment groups compared to the control. Statistically insignificant (p > 0.05) increase in TLC was also recorded in all the treated groups. Hb concentration increased for all the treatment groups. The ESR values of the experimental mice were negligible in first hour. The serum transaminases (SGPT and SGOT) increased in all treated groups but the difference in group A was significant (p < 0.05) compared to the control. Blood urea was recorded significantly (P < 0.01) higher for group A and lower for group C compared to the control. This study can be helpful to study the effect of particular haematinic on animal especially on simple stomach animal and human being as mice is used as human and animal model. Key words: Haematinics, haemato-biochemical parameters, mice DOI = 10.3329/bjvm.v5i1.1325 Bangl. J. Vet. Med. (2007). 5 (1 & 2): 103-105

THE POOL SIZE, TURNOVER RATE, AND OXIDATION RATE OF BODY GLUCOSE IN ANESTHETIZED WARM- AND COLD-ACCLIMATED RATS EXPOSED TO A WARM ENVIRONMENT

1959 ◽  
Vol 37 (1) ◽  
pp. 285-295 ◽  
Author(s):  
Florent Depocas
Keyword(s):  
Body Weight ◽  
Plasma Glucose ◽  
Turnover Time ◽  
The Body ◽  
Pool Size ◽  
Glucose Turnover ◽  
Oxidation Rates ◽  
Warm Environment ◽  
Essentially Normal ◽  
The Difference

The size and space of the body glucose pool along with its turnover and oxidation rates have been measured in anesthetized 30° and 6 °C acclimated rats by a method involving continuous intravenous injection of small amounts of D-glucose uniformly labelled with C14 and attainment of relatively constant specific activities of plasma glucose and respiratory CO2. Values of glucose pool space in warm-acclimated rats (essentially normal animals) were in accord with those found in the dog by a similar method. Results obtained on warm-acclimated rats indicated that previous published values of turnover and oxidation rates of glucose for normal rats were high by a factor of approximately 2 to 4. There was, however, close agreement between the values of turnover time of body glucose pool measured by the continuous infusion procedure and those obtained by others with the single intravenous or intraperitoneal injection procedure. In cold-acclimated rats, average absolute values of glucose pool size were significantly smaller than in warm-acclimated rats but the difference was lost when results were related to body weight. Small, non-significant differences in values of glucose pool size per 100 g body weight and in plasma glucose concentration combined to give a significantly larger glucose space in cold-than in warm-acclimated rats. Glucose turnover and oxidation rates, the ratio between these two quantities, and the proportion of respiratory CO2 derived from glucose oxidation were not significantly different in the two groups of rats, thus indicating that cold acclimation is not associated with major alterations in glucose metabolism at least when studied on fully fed anesthetized animals at 30 °C.

scholarly journals The Evaluation of the Body Weight Lowering Effects of Herbal Extract THI on Exercising Healthy Overweight Humans: A Randomized Double-Blind, Placebo-Controlled Trial

2013 ◽  
Vol 2013 ◽  
pp. 1-8 ◽  
Author(s):  
Soo Hyun Cho ◽  
Yoosik Yoon ◽  
Young Yang
Keyword(s):  
Body Weight ◽  
Controlled Trial ◽  
Safety Evaluation ◽  
Hdl Cholesterol ◽  
Treated Group ◽  
The Body ◽  
Herbal Extract ◽  
Double Blind ◽  
The Difference ◽  
Group 2

We investigated the effects of herbal extracts, a mixture of Scutellariae Radix and Platycodi Radix containing the active ingredients Baicalin and Saponin (target herbal ingredient (THI)), on lowering body weight. The present study was a prospective, randomized, double-blind, and placebo-controlled trial carried out at the outpatient department of a hospital over a period of 2 months. Group 1 patients (n=30) received THI, and group 2 patients (n=23) received placebo three times a day before meals. Weight, waist circumference, BMI, total cholesterol, triglycerides, HDL cholesterol, LDL cholesterol, and glucose were measured at baseline and again at the 2nd month. For safety evaluation, various hematological and biochemical parameters were assessed. Values of mean change of weight in the THI-treated group were−1.16±1.41 kg and in the placebo-treated group were−0.24±1.70 kg, respectively. The difference in mean change of weight in the THI-treated group compared with that in the placebo-treated group was statistically significant (P<0.05). The incidence of subjective and objective adverse drug reactions was insignificant (P>0.05). THI was statistically significant in its effectiveness on the weight loss.

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