EFFECTS OF EGG WEIGHT ON POSTHATCHING GROWTH RATE OF BROILER CHICKS

1973 ◽  
Vol 53 (4) ◽  
pp. 665-668 ◽  
Author(s):  
E. E. GARDINER
Keyword(s):  
Body Weight ◽  
Group Analysis ◽  
Broiler Chicks ◽  
Weight Group ◽  
Egg Weight ◽  
Growing Period ◽  
Commercial Broiler ◽  
Males And Females ◽  
Hatching Eggs ◽  
Weight Groups

Eggs obtained from a commercial broiler hatching-egg producer were assigned by weight to seven groups and set for hatching. After hatching, equal numbers of male and female chicks were placed in floor pens according to egg weight groups and weighed at day-old and weekly for 8 wk. Three additional groups of chicks consisted of: equal numbers of females from each egg weight group; equal numbers of males from each egg weight group; and equal numbers of males and females from each egg weight group. Analysis of the data indicated that the influence of egg weight on chick weight decreased with time. Significant differences in body weight among groups occurred for all ages for the females, whereas no significant differences occurred for the last two ages for the males. Chicks grown in the mixed egg weight groups did not differ from those grown separately. Even though statistical evidence indicated that egg weight did influence 8-wk body weight of females, factors such as cost of producing hatching eggs, price of day-old chicks, hatchability of eggs, length of growing period, and availability of hatching eggs, would have to be taken into consideration before deciding whether or not smaller eggs could be used profitably in the industry.

scholarly journals Fast Focus Ultrasound Liver Technique for the Assessment of Cystic Echinococcosis in Sheep

Animals ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 452 ◽  
Author(s):  
Giuliano Borriello ◽  
Jacopo Guccione ◽  
Antonio Di Loria ◽  
Antonio Bosco ◽  
Paola Pepe ◽  
...  
Keyword(s):  
Body Weight ◽  
Focused Ultrasound ◽  
Ultrasound Examination ◽  
Focus Ultrasound ◽  
The Body ◽  
Weight Group ◽  
Ultrasound Technique ◽  
Female Sheep ◽  
Weight Groups ◽  
Diagnostic Outcomes

A complete ultrasound examination (cUS) of the liver was performed on 172 female sheep and compared to the performance of a fast-focused ultrasound technique to diagnose echinococcal cysts. The scanned area was divided in: HYP (right hypocondrium), zone (Z)1 from HYP to the 11th intercostal space (IS), Z2 (10th–8th IS) and Z3 (7th–5th IS). Contiguous scans were also examined (HYP + Z1, Z1 + Z2, Z2 + Z3). Furthermore, during the procedures, the sheep were divided into three groups according to the body weight: Group (G) 1 (lighter), G2 (medium), and G3 (heavier). Finally, diagnostic outcomes were compared with necropsy findings. cUS obtained the highest values of sensitivity (Se) (91%), Specificity (Sp) (80%), and positive-zones (124/138, 90%), as compared to the other scans. cUS was also characterized by high values of Se and Sp and was able to identify a great number of positive-zones, when sheep were divided by body-weight groups. Similar performances were obtained in G1 by HYP (Se: 91%–Sp: 82%; 18/20, 90% of positive-zones) and HYP + Z1 scans (Se: 91%–Sp: 82; 90% of positive-zones, 18/20). Thus, in lighter breeds, the examination of HYP and HYP + Z1 scan windows could be considered reliable techniques for identifying the infected animals, while in heavier sheep the cUS still represents the best option.

scholarly journals Effects of storage period and egg weight of Japanese quail eggs on hatching results (short communication)

2005 ◽  
Vol 48 (5) ◽  
pp. 518-526
Author(s):  
I. Seker ◽  
S. Kul ◽  
M. Bayraktar
Keyword(s):  
Storage Period ◽  
Fertility Rate ◽  
Embryonic Mortality ◽  
Light Weight ◽  
Egg Weight ◽  
Heavy Weight ◽  
Japanese Quails ◽  
Early Embryonic Mortality ◽  
Hatching Eggs ◽  
Weight Groups

Abstract. This study was undertaken to determine the effects of storage period and egg weight of hatching eggs of Japanese quails on fertility, hatchability results. Eggs were obtained 150 females quails, all at 15 weeks of age. A total of 1942 hatching eggs were separated into 3 groups as light-weight (9.50-10.50 g), medium-weight (10.51-11.50 g), and heavy-weight (11.51-12.50 g). Based on storage period, eggs were divided into 5 groups as group 1 (0-3 days), group 2 (4-6 days), group 3 (7-9 days), group 4 (10-12 days), and group 5 (13-15 days). The influence of storage period on hatchability of fertile eggs and early, middle, and late period embryonic mortality rates was found significant (P<0.01). The effect of egg weight on fertility rate, hatchability of fertile eggs and early embryonic mortality was significant (P<0.05, P<0.01). The significant differences between storage period groups were observed in hatchability of fertile eggs. The differences between egg weight groups for fertility rate, hatchability of fertile eggs and early embryonic mortality was significantly higher in light weight group than the other egg weight groups. Results of this study concluded that a 12 day pre-incubation storage of hatching eggs of Japanese quails did not appreciably affect hatching parameters. Use of medium or heavy weight eggs for hatching may reduce early embryonic mortality rate.

Subchronic Toxicity of Monensin in Broiler Chickens

1983 ◽  
Vol 20 (3) ◽  
pp. 353-359 ◽  
Author(s):  
D. D. Wagner ◽  
R. D. Furrow ◽  
B. D. Bradley
Keyword(s):  
Body Weight ◽  
Feed Efficiency ◽  
Broiler Chickens ◽  
Continuous Monitoring ◽  
Body Weight Gain ◽  
Liver Weight ◽  
Broiler Chicks ◽  
Subchronic Toxicity ◽  
Toxic Dose ◽  
Growing Period

One hundred ninety-two male broiler chicks were dosed with monensin at concentrations of 0, 121, or 242 mg/kg feed throughout the normal growing period (50 days). Body weight gain and feed efficiency were determined weekly, and cardiac muscle was examined grossly and histologically at the end of the experiment. Livers also were weighed and examined grossly. Feed intake was determined daily, allowing continuous monitoring of drug intake. No depressing effects of the drug on growth rate and efficiency were observed until after four weeks, and then were evident only in the chicks receiving the 242 mg/kg diet. Subepicardial hemorrhage and congestion occurred in 40% of the hearts from the chickens fed the high monensin dose and were nonexistent in the other treatments. There appeared to be an inverse relationship between monensin dose and liver weight. The paralytic effects previously reported from acute dosing experiments were not observed. The results show that the heart and probably the liver are sensitive indicators of monensin toxicity and that the subchronic toxic dose is less than 18 mg/kg body weight per day.

Assessment of pre and post-incubation parameters in Uttara breeder hens

2016 ◽  
Author(s):  
M. K. Singh ◽  
Shive Kumar ◽  
R. K. Sharma ◽  
S. K. Singh ◽  
Brijesh Singh ◽  
...  
Keyword(s):  
Uniform Size ◽  
Egg Weight ◽  
Breeder Hens ◽  
Chick Quality ◽  
Hatching Eggs ◽  
Weight Groups

A study was conducted to determine the effects of pre-incubation egg parameters on post-incubation parameters in Uttara breeder hens. A total of 2,890 hatching eggs were classified according to three egg weight groups viz. small (44-52 g); medium (53-57 g) and large (58-68 g). Results indicated that large-sized eggs produced chicks with higher hatch-weight than medium and small-sized eggs. However, no differences were observed for fertility and hatchability rates but significant differences were found for chick quality and chick weight. It was therefore concluded from the results of the present study that sorting of eggs by weight prior to incubation might be advantageous in producing uniform size hatchlings to meet specific market demands with focus on breeding for obtaining maximum number of saleable chicks.

scholarly journals Japon Bıldırcınlarında Yumurta Ağırlığı, Kuluçka Sıcaklığı ve Kabuk Sıcaklığının Kuluçka Sonuçlarına Etkilerinin Belirlenmesi

2021 ◽  
Vol 9 (1) ◽  
pp. 234-240
Author(s):  
Sancar Kansak ◽  
Sedat Aktan
Keyword(s):  
Japanese Quail ◽  
Water Loss ◽  
Relative Weight ◽  
Late Period ◽  
Egg Weight ◽  
Development Period ◽  
Shell Temperature ◽  
Hatching Eggs ◽  
Weight Groups

In this study, a total of 402 Japanese quail hatching eggs from 32 weeks of age flock to determine shell temperature, temperature differences between shell and setter temperatures, relative weight (water) loss from eggs in setter period and effects on incubation results. All the eggs were divided into two egg weight groups (≤12 g and >12 g) and they were randomly and equally distributed to the setter trays. As expected, day old chick weight was significantly affected by the egg weight. The lighter eggs lost more water than heavier ones. Although the embryo cannot produce a noticeable level of heat in the first half of the development period (endothermic phase), since it begins to generate more noticeable heat in the second half (exothermic phase), the shell temperature is found to be higher than the setter temperature. This table is more pronounced in heavier eggs. In the first half of the development period, while the shell temperature was higher in light eggs than in heavy ones, the shell temperature, in egg weight groups, was differed by the setter floors during the latter half. Generally, in this late period, when the growing embryo now produces more noticeable heat, the higher shell temperatures were measured in heavier eggs and in eggs where set in upper-trays. The lighter eggs where set in lower-trays were found to be having lower shell temperatures than the eggs in all other combinations. Late embryonic mortalities were higher in heavier eggs.

scholarly journals Antioxidant Capacity and Hepatoprotective Effect of Silymarin Against Salinomycin – Induced Toxicity in Adult Rabbits

2021 ◽  
Author(s):  
Ahmed Hamdy ghonaim ◽  
Mai G Hopo ◽  
tarek AboElnaga ◽  
Rania Abdelrahman Elgawish ◽  
RH Abdou ◽  
...  
Keyword(s):  
Body Weight ◽  
Low Density Lipoprotein ◽  
Relative Weight ◽  
Density Lipoprotein ◽  
Control Group ◽  
Weight Group ◽  
Group 4 ◽  
Body Weights ◽  
Group 5 ◽  
Weight Groups

Abstract Salinomycin was evaluated for its toxicity and silymarin for prophylactic management in male rabbits. Male rabbits were randomly divided into 7 groups with 7 rabbits / each. Groups 1, 2, 3 were kept as control group, salinomycin (20 mg / kg ration) and salinomycin (40 mg / kg ration), respectively. Group 4 was fed on feed containing salinomycin (20 mg / kg ration) and silymarin (6.5 mg / kg body weight). Group 5 received feed containing salinomycin (40 mg / kg ration) and silymarin (13 mg / kg body weight). Groups 6 and 7 were nourished feed containing silymarin (6.5 and 13 mg / kg body weight), respectively. Duration of the experiment was 28 days. Weekly body weights showed a significant reduction in the 3rd group when compared with control group. The activity of Malondialdhyde and the values of aspartate aminotransferase, alanine aminotransferase, total protein, albumin, total cholesterol, triglycerides, low density lipoprotein, urea and creatinine were significantly elevated in 2nd and 3rd group while glutathione, catalase, superoxide dismutase and high density lipoprotein were significantly lowered when compared with control group. Thus, it is clarified that salinomycin toxicity is owed to oxidative damage and the usage of silymarin in feed tends to treat and prevent any accidental toxicity. Relative weight of the liver increased significantly in 3rd group. There were mild pathologic changes in liver of 2nd group while there were sever pathologic changes at 3rd group when compared with control group.

scholarly journals Fertility, Body Weight and Survivability of Two Lines of Broiler Stock under Selection

2021 ◽  
Vol 43 (2) ◽  
pp. 19-27
Author(s):  
A. K Olutunmogun ◽  
A.U Umar, ◽  
I. A Adeyinka ◽  
E. O Adejoh-Ubani ◽  
B.I Nwag ◽  
...  
Keyword(s):  
Body Weight ◽  
Survival Rate ◽  
Broiler Chicks ◽  
Hybrid Strain ◽  
Egg Weight ◽  
Broiler Breeder ◽  
Pooled Data ◽  
Correlation And Regression Analysis ◽  
Breeder Hens ◽  
Selection For

This study was conducted to evaluate the performance of two lines of broiler breeders under selection. The traits of interest were fertility, body weight and survival rate. A total of 120 day-old broiler chicks were hatched from two lines of broiler breeder chickens under selection (Sire and Dam lines). The chicks were hatched from a population of breeder hens and cocks with a mating ratio of 1 broiler cock to 6 broiler hens (1:6). Eggs were collected and pedigreed according to the lines and sire information. The eggs were weighed on a Camry model digital sensitive scale in grams. Eggs were set and hatched in a Buckeye incubator. Each hatched chick was tagged and weighed at hatching and then weekly up to 8 weeks. Data were analyzed using general linear model (GLM). Correlation and regression analysis were based on pooled data from both lines. Results showed that the lines differed with respect to fertility (67.67% and 83.00%), hatchability (77.79 and 49.00) and survival rate (77.78 and 94.14).Also changes in body weight increased as their ages increased with the dam line being superior. There was a low R2 value of between 0.05 – 0.33 when egg weight and hatch weight were pooled and considered as independent variables. In conclusion the lines were superior to each other differently as the sire line had better egg weight and hatchability while the dam line was better in fertility, survival rate and body weight performance. This variation in traits can be used in selection for hybrid strain in the broiler

Effect of supplementing selenized yeast on performance and anti-oxidant responses in Vanaraja and commercial broiler chickens

2018 ◽  
Author(s):  
B. Prakash ◽  
S. V. Rama Rao ◽  
M.V.L.N. Raju ◽  
C. Sreenivasa Reddy
Keyword(s):  
Body Weight ◽  
Weight Gain ◽  
Broiler Chicken ◽  
Body Weight Gain ◽  
Reductase Activity ◽  
Control Diet ◽  
The Body ◽  
Broiler Chicks ◽  
Commercial Broiler ◽  
Anti Oxidant

The study was conducted to determine the efficacy of organic Se produced through Saccharomyces cerevisiae from sodium selenite in the diet of Vanaraja and commercial broiler chicken. The trial was conducted in day-old Vanaraja chicks (n=160), which were randomly distributed into 4 dietary groups having 5 chicks in each of 8 replicates. The basal diet (BD) was formulated and supplemented with calculated quantity of organic Se to formulate the different experimental diets and fed up to 5 weeks. The second experiment in day-old commercial broiler chicks (n=350), which were randomly distributed into 7 dietary groups having 5 chicks in each of 10 replicates. The experimental birds were fed BD (diet I) with 0.2 mg/kg organic Se (diet II), 0.4 mg/kg organic Se (diet III) and 0.6 mg/kg organic Se (diet IV), and BD with 0.2 mg/kg inorganic Se (diet V), 0.4 mg/kg inorganic Se (diet VI) and 0.6 mg/kg inorganic Se (diet VII) up to 6 weeks. The body weight gain during 5th week was higher (P Lass Than 0.05) in the birds fed with diet supplemented 0.3 mg/kg of the organic Se compared to the other groups. However, feed intake and feed conversion ratio (FCR) among different groups did not vary (P>0.05) throughout the experiment. The activity of glutathione peroxidase was higher (P Lass Than 0.01) among the groups fed the diets containing organic Se (0.2, 0.3 and 0.4 mg/kg) compared to the control diet in experiment I. In experiment II, body weight gain and FCR at the end of the experiment were improved significantly (P Lass Than 0.01) in the group fed 0.2 mg/kg organic Se compared to control. Alanine transaminase, Aspartate aminotransferase, triglycerides and cholesterol levels were lower in groups fed diets supplemented organic Se compared to control or inorganic Se fed groups. Whereas, glutathione reductase activity was significantly higher among the groups supplemented organic Se compared to other dietary groups. Based on the results it can be concluded that supplementing organic Se up to 0.3 mg/kg enhanced the body weight gain and anti-oxidant enzyme activity in Vanaraja and commercial broiler chicken.

Effect of dietary supplementation of herbal growth promoteron performance of commercial broiler chicken

2016 ◽  
Author(s):  
J. D. Mahanta ◽  
B. Borgohain ◽  
Mihir Sharma ◽  
D. Sapcota ◽  
Jakir Hussain
Keyword(s):  
Body Weight ◽  
Broiler Chicken ◽  
Dietary Supplementation ◽  
Basal Diet ◽  
Broiler Chicks ◽  
Growth Promoter ◽  
Feed Conversion ◽  
Final Body Weight ◽  
Commercial Broiler ◽  
Similar Body

The present study was conducted to evaluate the effect of a Commercial Herbal Growth Promoter (CHGP) with a combination of selective nine numbers of herbs on the performance of broiler chicken. A total of 120 day-old commercial broiler chicks having similar body weight from a single hatch were procured and chicks were randomly distributed into four groups viz, T0 (standard basal diet as control), T1 (basal diet + 1.0 % CHGP powder), T2 (basal diet + 2.0 % CHGP powder) and T3 (basal diet + 3.0 % CHGP powder) comprising 30 chicks in each groups. All the birds were managed under uniform managemental condition. The final body weight was significantly (P£0.01) highest in T2 (2059.83 g) followed by T3 (1956.67 g), T0 (1845.33 g) and T1 (1825.17 g). In respect of overall Feed Conversion Ratios (FCR), T2 group showed significantly (P£0.05) best FCR value of 1.69 followed by T3 (1.77), T0 (1.85) and T1 (1.87). The study revealed that there was increased body weight, improved FCR, higher BPEI, cent per cent livability and increased gross profit per broiler in birds offered 2% CHGP powder as herbal growth promoter.

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