scholarly journals Comparative analyses of growth response and genetic parameter estimates of some quantitative traits in three broiler strains in South-West, Nigeria

2021 ◽  
Vol 41 (2) ◽  
pp. 12-18
Author(s):  
A. J. Sanda ◽  
O. Olowofeso ◽  
M. A. Adeleke ◽  
A. O. Oso ◽  
S. O. Durosaro ◽  
...  
Keyword(s):  
Body Weight ◽  
Growth Performance ◽  
Broiler Chicken ◽  
Quantitative Traits ◽  
Growth Response ◽  
Genetic Parameter ◽  
Parameter Estimates ◽  
Comparative Analyses ◽  
South West ◽  
Linear Body

A total of 150 pure strain broiler chicks comprising 50 each of Arbor Acre, Marshall and Ross were used for this experiment which lasted 10 weeks at the Poultry Breeding Unit of the Directorate of University Farms (DUFARMS) of the Federal University of Agriculture, Abeokuta (FUNAAB), Ogun State Nigeria. The experiment was carried out to make comparative analyses of growth response and genetic parameter estimates of some quantitative traits (Body weight and linear body measurement) in Arbor Acre, Marshall and Ross broiler chicken strains in South-West, Nigeria. Growth performance data was collected from week 3 to week 10 and analysed using the Generalized Linear Model. Marshall broiler chicken strain had the highest growth rate and better growth performance followed by Ross and Arbor Acre in terms of body weight and linear body dimensions. Marshall and Ross attained mean weight of 1964.50±43.10 g and 1913.02±41.05 g, respectively, which were superior (p < 0.05) to Arbor Acre 1831.63±36.28 g at 10 weeks of age. Marshall Broiler chicken strain also had the highest estimates of heritability for body weight 0.46±0.04, followed by Arbor Acre and Ross with estimates of heritability of 0.38±0.12 and 0.26±0.06, respectively. However considering the linear body measurements, none of the broiler chicken strains maintained high estimates of heritability from 3rd to 10th week.

scholarly journals Are the energy matrix values of the different feed additives in broiler chicken diets could be summed?

2020 ◽  
Vol 16 (1) ◽  
Author(s):  
Abdallah E. Metwally ◽  
Ahmed A. A. Abdel-Wareth ◽  
Ahmed A. Saleh ◽  
Shimaa A. Amer
Keyword(s):  
Body Weight ◽  
Weight Gain ◽  
Growth Performance ◽  
Economic Efficiency ◽  
Broiler Chicken ◽  
Body Weight Gain ◽  
Basal Diet ◽  
Control Group ◽  
Energy Matrix ◽  
Degrading Enzymes

Abstract Background The aim of this study is to investigate whether the energy matrix values of the nonstarch polysaccharide- (NSP-) degrading enzymes, bioemulsifier (LYSOFORTE®), guanidinoacetic acid (CreAMINO®), or their combinations could be summed. The effects of these additives on the growth performance, carcass traits, and economic value of the broiler chicken diets were evaluated. A total of 525-one-day-old Ross chicks with an initial body weight of 42.96 ± 0.87 g were haphazardly allocated into seven groups with five replicates. The seven experimental treatments are as follows: (1) basal diet with no additives (breeder recommendation), which is the control group, (2) basal diet minus 100 kcal/kg supplemented with 0.02% NSP-degrading enzymes (NSP), (3) basal diet minus 50 kcal/kg supplemented with 0.025% emulsifier (LYSOFORTE®), (4) basal diet minus 50 kcal/kg supplemented with 0.06% guanidinoacetic acid (CreAMINO®), (5) basal diet minus 150 kcal/kg supplemented with a mixture of NSP and LYSOFORTE® (NSPL), (6) basal diet minus 100 kcal/kg supplemented with a mixture of NSP and CreAMINO® (NSPC), and (7) basal diet minus 200 kcal/kg supplemented with a mixture of NSP, LYSO, and CreAMINO® (NSPLC). The experiment lasted for 35 days. Results It was found that the final body weight, body weight gain, and relative growth rate were significantly higher in birds fed diets supplemented with NSPL, NSPC, CreAMINO, and LYSO with the reduced energy matrix value. The overall feed conversion ratio was significantly improved due to the supplementation of NSPC, CreAMINO, NSPL, and LYSO with the reduced energy matrix value compared to the control group. Moreover, no significant effect on the carcass criteria was observed by the different treatments. As a result of the dietary supplementation with NSPL, NSPC, CreAMINO®, and LYSO with the reduced energy matrix value, the net profit, total return, economic efficiency, and performance index were increased and the cost of feed per kg of body weight gain was decreased. Conclusion The energy matrix value of NSPL, NSPC, CreAMINO®, and LYSOFORTE could be established in the diets of broiler chickens to improve the growth performance and economic efficiency.

scholarly journals Genetic parameter estimates for important traits on the fifth generation in red tilapia in Vietnam

2021 ◽  
Vol 20 (1) ◽  
pp. 49-57
Author(s):  
Sang V. Nguyen
Keyword(s):  
Body Weight ◽  
Survival Rate ◽  
Genetic Parameters ◽  
Genetic Parameter ◽  
Genetic Correlations ◽  
Parameter Estimates ◽  
Environment Interaction ◽  
Body Colour ◽  
Red Tilapia ◽  
Gxe Interaction

Genetic parameters comprising heritability, genetic correlation and genotype by environment interaction (GxE) for growth survival rate and body colour at harvest were estimated on the 5th selective generation of red tilapia grown in two environments, freshwater and brackishwater ponds. A total of 116 full-half-sib families was produced as well as 4,432 and 3,811 tagged individuals were tested in freshwater and brackishwater ponds, respectively. Genetic parameters were estimated by ASReml 4.1 software. The heritability for body weight and survival rate was high while medium heritability for body colour in freshwater was observed. The heritability for those traits of red tilapia in brackishwater. Together with the figures in earlier publication on previous generations (G1 to G4) in the same selective population, the expected medium to high response acquires if selection is done for each trait. Genetic correlations among harvest body weight, survival rate and body colour are insignificantly different and ranging from -0.25 to 0.37 (P > 0.05). These results implied that selection on one trait do not influence on responses of the other traits. GxE interaction for body weight and body colour between two tested environments is mostly negligible with genetic correlations ranging from 0.63 - 0.80 while it is important for survival trait (rg = -0.17 ± 0.40).

scholarly journals Evaluation of early growth performance of backcross progenies from crossbred gilts mated with their native parents

2021 ◽  
Vol 33 (2) ◽  
pp. 170-177
Author(s):  
P. E. Nwaku ◽  
M. O. Otuma
Keyword(s):  
Body Weight ◽  
Growth Performance ◽  
Body Length ◽  
Feed Efficiency ◽  
The Body ◽  
Body Measurements ◽  
State University ◽  
Weaning Age ◽  
The Mean ◽  
Linear Body

The pre weaning growth performance of piglets from four different cross bred dams mated back to their native parents was studied in the Breeding and Research Farm of Ebonyi State University, Abakaliki. Parameters like body weight, weight gain, feed intake and feed efficiency as well as linear body measurements of body length, heart girth and height  at withers were taken and observed for growth between birth and weaning age of eight weeks. Results Results indicated significant differences (P<0.05) between the main backcross N x (N x LR) and the three other genotypes of N x (N x LW), N x (LR x N) and N x (LW x N) in all parameters. The mean birth weight of the progenies ranged from 1.00±0.60 to 1.60±5kg while the weaning weights were 10.5±0.4 to 16.0±1.0kg respectively. Results further revealed that body weight at weaning correlated responsively with all parameters and these include body length (r=0.858), heart girth (r= 0.446) and height at the withers (r= 0.946). Similarly, body length has a positive correlation with heart girth (r= 0.477) and height at the withers (r= 0.827) whereas hear girth correlated positively with the height at the withers (r= 0.494). Similar trend were obtained in the regression of each of the body measurements on the other in which bodyweight changes depended more on that of body length (0.86) than on heart girth (0.45). Judging from the observed variations existing among the piglets resulting from differnt crossbreed dams in their pre-weaning growth performance, maternal rather than paternal influences appeared to be more important in the traits studied.   

scholarly journals The effects of Myristica fragrans seed meal and Syzygium aromaticum leaf meal dietary supplementation on growth performance and oxidative status of broiler chicken

2020 ◽  
Vol 44 (1) ◽  
Author(s):  
Olufemi Adesanya Adu ◽  
Francis Ayodeji Gbore ◽  
Olugbenga David Oloruntola ◽  
Andrew Bamidele Falowo ◽  
Olumuyiwa Joseph Olarotimi
Keyword(s):  
Body Weight ◽  
Weight Gain ◽  
Glutathione Peroxidase ◽  
Growth Performance ◽  
Broiler Chicken ◽  
Body Weight Gain ◽  
Dietary Supplementation ◽  
Seed Meal ◽  
Syzygium Aromaticum ◽  
Leaf Meal

Abstract Background The study examined the effects of Myristica fragrans seed meal (MSM) and Syzygium aromaticum leaf meal (SLM) dietary supplementation on the growth performance, health status, and meat quality of broiler chicken. Methods A total of two hundred and forty 1-day-old broiler chickens were assigned the four dietary treatments: Diet 1/control (no supplementation), Diet 2 (0.25% MSM), Diet 3 (0.25% SLM), and Diet 4 (0.25% MSCM, i.e., MSM + SLM 1:1). The birds were fed ad libitum throughout the feeding trial. Results The dietary supplementation of 0.25% MSCM resulted in higher body weight gain and lowered feed conversion ratio (p < 0.05) at the finisher stage and overall period, while feed intake was not statistically affected (p > 0.05) across the treatments. The dietary inclusion of MSM, SLM, and MSCM did not significantly influence carcass traits, relative internal organ weights, and haematological indices of the broiler chicken (p > 0.05) except mean cell volume and mean cell haemoglobin content (p < 0.05). The result further revealed that broilers fed diets supplemented with MSM, SLM, and MSCM had higher (p < 0.05) serum catalase, glutathione peroxidase and lowered serum cholesterol compared with control. The meat cholesterol levels and lipid peroxidation of the birds were significantly (p < 0.05) reduced, while glutathione peroxidase was increased by dietary MSM, and MSCM supplementation. Conclusion The MSCM supplementation at 0.25% enhanced the body weight gain, improved serum, and meat glutathione peroxidase and catalase but reduced the broiler’s meat cholesterol level and lipid oxidation.

scholarly journals Growth rate, phenotypic correlation and repeatability estimates of body weight and linear body traits of Cobb and Arbor Acre broiler strains

2020 ◽  
Vol 44 (1) ◽  
pp. 39-47
Author(s):  
O. M. Obike ◽  
R. J. Nosike ◽  
D. N. Onunkwo ◽  
O. C. Obi ◽  
E. N. Obasi ◽  
...  
Keyword(s):  
Body Weight ◽  
Growth Performance ◽  
Wing Length ◽  
Correlation Coefficients ◽  
Phenotypic Selection ◽  
Phenotypic Correlation ◽  
Potential Response ◽  
Stages Of Growth ◽  
High Repeatability ◽  
Linear Body

Correlation coefficients are useful tool in animal breeding as a means of predicting potential response. In this study, body weight (BW) and linear body traits records of Arbor Acre and Cobb broiler strains obtained at 3 – 8 weeks were used to compare the growth performance of the strains as well as estimate the phenotypic correlations (rp ) among BW and the linear body traits. Repeatability (R) values of BW and the linear body traits were estimated at weeks 3, 5 and 7. Atotal of 200 day old chicks, 100 each of Arbor Acre and Cobb were used for the study. The linear body traits considered were body length (BL), shank length (SL), chest circumference (CC), keel length (KL), wing length (WL) and drum stick length (DSL). Significant differences (P<0.05) were observed between the strains for BW and the linear body traits at the various weeks. BW differed significantly at weeks 5, 6 and 7, which ranged from 1036.67 ± 36.93 – 1736.67 ± 46.41 for Arbor Acre and 930.00 ± 20.59 – 1563.33 ± 33.26 for Cobb. Arbor Acre showed significant (P<0.05) superiority to Cobb in their linear body traits in most of the weeks. BW had high significant (P<0.05; P<0.01) positive rp with the linear body traits, which ranged from 0.535 (KL) – 0.842 (BL) for Arbor Acre and 0.523 (SL) – 0.834 (BL) for Cobb. The rp among the linear body traits in both Arbor Acre and Cobb were positive but ranged from moderate to high. The R estimate of BW of Arbor Acre and Cobb were all very highly repeatable at weeks 3, 5 and 7 ranging from 0.90 – 0.99. R values for the linear body traits ranged majorly from moderate {(0.31 – 0.67 and 0.37 – 0.69)}to high {(0.78 – 0.97) and 0.97) and (0.71 – 0.92)} for Arbor Acre and Cobb, respectively across the weeks evaluated. The result of this study indicates that Arbor Acre could be a strain of choice for rearing in our study area owing to its superiority over Cobb in terms of growth performance. All the linear body traits measure were good estimators of BW in both strains as well as each other, implying that any phenotypic selection on one trait will lead to improvement of others. The high repeatability estimates of body weight and some of the linear traits indicate that fewer records would be required to adequately characterize the inherent growing ability of the birds at the various stages of growth.

scholarly journals Phenotypic correlations between body weight and morphometric traits in broiler chicken strains

2020 ◽  
Vol 45 (3) ◽  
Author(s):  
R.J. Nosike ◽  
E.N. Obasi ◽  
R.N. Nwose ◽  
R.O. Igwe ◽  
D.N. Onunkwo ◽  
...  
Keyword(s):  
Body Weight ◽  
Broiler Chicken ◽  
Wing Length ◽  
Measurement Data ◽  
The Body ◽  
Broiler Chicks ◽  
Morphometric Traits ◽  
Morphometric Measurements ◽  
Predict Body Weight ◽  
Linear Body

A total of 270 one day-old broiler chicks comprising of 90 chicks each ofAborAcre, Ross and Marshal Strains were used for the study. The study was carried out to determine the correlation between the body weight and other morphometric measurements in the broiler strains from 2 to 8 weeks of age and predict body weight of the broiler using linear body measurement. Data were collected on body weight and body measurements to include breast length (BRL), thigh width (TW), shank length (SL), keel length (KL), wing length and drumstick length (DL). There were strong positive and significant (p>0.01) correlations between body weight (BWT) and all morphometric traits in the three broiler strains studied, except breast length (BRL) that showed weak but significant (p

scholarly journals Comparative Growth Performance of Kuroiler and Nigerian Indigenous Naked Neck Chickens Kept in a Tropical Environment

2021 ◽  
Author(s):  
ODAH EMMANUEL OKOLI ◽  
Wheto Mathew ◽  
Ojaowo Henry Temitope ◽  
Obanla Fisayo Gideon ◽  
Adebambo Oluwafunmilayo Ayoka ◽  
...  
Keyword(s):  
Body Weight ◽  
Growth Performance ◽  
Growth Patterns ◽  
Growth Stages ◽  
Differential Growth ◽  
Naked Neck ◽  
Chicken Breeds ◽  
And Performance ◽  
The Tropics ◽  
Linear Body

Abstract Chicken production is an essential venture for steady household income generation, poverty alleviation and provision of quality nutritional aids. This study was conducted to compare growth performance of Kuroiler and Nigerian indigenous naked neck chickens reared in the tropics. A total of 538 birds comprising 345 indigenous Nigerian naked neck and 193 Kuroiler chickens genotypes were sampled. Body weight and linear body measurements were observed at 2, 4, 6, 8 and 10th week. Data obtained were subjected to 2-way analysis of variance using GLM procedure of SAS. There exist significant variations in chicken genotype with growth performance. Kuroiler birds significantly showed heavier mean body weight (p<0.05) at various critical growth stages observed than the Nigerian indigenous naked neck chickens reared under same conditions. The influence of genotype and sex on mean body weight and breast girth measures of chickens remain insignificant throughout early growth stages. However, at 6th, 8th and 10th week of age, Kuroiler breeds demonstrated superior growth rate and performance response compared to Nigerian indigenous naked neck fowls. Both chicken breeds exhibited differential growth patterns and sexual dimorphism in favour of male populations. Introduction and crossing of Kuroiler strains with Nigerian indigenous naked neck birds might result in better performance and adaptability.

Sign in / Sign up

Export Citation Format

Share Document