Productive performance of broiler rabbits

2016 ◽  
Author(s):  
R. Lavanya ◽  
M. Mahender ◽  
N. Rajanna ◽  
M. Gnanaprakash
Keyword(s):  
Least Squares ◽  
Analysis Of Variance ◽  
Feed Efficiency ◽  
The Body ◽  
Least Square ◽  
Productive Performance ◽  
Body Weights ◽  
The Difference ◽  
Range Test

The study focuses on the effect of breed on the body weights and average daily gains (ADGs) during pre-weaning (birth-4 weeks) and post-weaning (4-16weeks) of Flemish Giant, Californian White and their Crossbreds. The data was subjected to one way analysis of variance. The difference between the means was tested by significance using Duncan’s multiple range test by programming and processing in computer. The overall least squares mean body weights at birth, 1, 2, 3 and 4 weeks of age were 52.38 ± 0.69, 110.58 ± 1.77, 169.97 ± 3.23, 254.35 ± 5.77 and 398.13 ± 8.44g, respectively. The overall least square means for post-weaning body weights at 6, 8, 10, 12, 14 and 16 weeks of age were 620.90 ± 13.11, 862.50 ± 18.10, 1072.88 ± 21.40, 1302.47 ± 24.69, 1535.12 ± 26.90 and 1733.51 ± 29.09g, respectively. The influence of breed was found to be significant on body weights at all the ages except at birth and on ADGs at all ages during pre-weaning and most of the ages during post-weaning. Feed efficiency of Flemish Giant, Californian White and their crossbreds were studied during post weaning period and observed that FCR (kg DMI/ kg gain) were 3.46, 3.99 and 3.86.

Performance evaluation of Soviet Chinchilla and Californian White rabbit breeds in tropical climatic conditions of India

2017 ◽  
Author(s):  
Uday Kannegundla ◽  
S. Sai Reddy ◽  
M. Gnana Prakash ◽  
M. Mahenderand ◽  
P. Amareswari
Keyword(s):  
Least Squares ◽  
Litter Size ◽  
Climatic Conditions ◽  
Research Station ◽  
Productive Performance ◽  
Litter Weight ◽  
Body Weights ◽  
Genetic And Phenotypic Correlations ◽  
High Heritability ◽  
Size At Birth

Study was conducted to evaluate the performance of Soviet Chinchilla and Californian White rabbit breeds maintained in tropical environment at rabbit research station, Hyderabad, Telangana. Data generated on total of 1364 bunnies, 701 belongings to the Soviet Chinchilla born in 122 litters and 663 bunnies of Californian White born in 124 litters during the period from 2012 to 2015 were utilized to examine the various productive performance traits. The overall least-squares mean litter size and litter weight was 5.52 ± 0.16 and 264.75 ± 7.86 at birth and 3.56 ± 0.17 and 1439.67 ± 72.55 g at weaning, respectively. The overall least-squares mean pre weaning body weights were 48.39 ± 0.48, 113.65 ± 1.38, 161.50 ± 2.03, 226.15 ± 3.47, 417.89 ± 7.53g at birth, 1, 2, 3 and 4 weeks of age and the post weaning weights at 6, 8, 10, 12, 14 and 16 weeks of age were 628.75 ± 13.02, 844.11 ± 14.81, 1040.79 ± 16.42, 1225.96 ± 17.81, 1437.57 ± 20.54 and 1636.99 ± 28.87 g, respectively. Season of birth and litter size at birth showed significant (£0.01) effect on body weights while genetic group, parity of the doe and sex of the bunny had slight effects only. The low to high heritability estimates, genetic and phenotypic correlations of body weights are the indication for improvement of body weights by appropriate breeding plans.

scholarly journals Pengaruh Pemberian Probiotik Berbeda Pada Pakan Komersial Terhadap Pertumbuhan Dan Efisiensi Pakan Ikan Lele Sangkuriang (Clarias Sp.) [ The Present Effect Of Different Probiotics On Commercial Feed Towards Growth And Feed Efficiency Of Sangkuriang Catfish (Clarias Sp.) ]

2019 ◽  
Vol 6 (1) ◽  
pp. 49
Author(s):  
Muhammad Arief, Nur Fitriani, Sri Subekti
Keyword(s):  
Growth Rate ◽  
Experimental Method ◽  
Analysis Of Variance ◽  
Feed Efficiency ◽  
Duncan Multiple Range Test ◽  
Randomized Design ◽  
Commercial Feed ◽  
Completely Randomized Design ◽  
Range Test ◽  
Significant Data

Abstract Freshwater culture commodity such as sangkuriang catfish (Clarias sp.) has high sufficient demand. One way to fullfil necessity of sangkuriang catfis demand is accelerate the growth. The aim of this research is to determine the present effect of different probiotics on commercial feed towards growth and feed efficiency of sangkuriang catfish. The research using experimental method, using Completely Randomized Design (CRD). Sangkuriang catfish kept in 30 days with four treatments and five replications, that is P1 (control), P2 (5% probiotics A), P3 (5% probiotics B), and P4 (5% probiotics C). The obtained data were processed by Analysis of Variance (ANOVA) and followed by Duncan Multiple Range Test if there was significant data. The result showed that different probiotics giving significant effect to growth rate and feed efficiency (p<0,05). The best sangkuriang catfish (Clarias sp.) growth rate is P2 treatment 2,88% ± 0,38, and the lowest is P1 treatment at 1,73% ± 0,7. The best feed efficiency is P2 treatment at 54,69% ± 9,67 and the lowest is P1 treatment at 30,27% ± 12,65

scholarly journals Effect of mating method, sex and birth type on growth of lambs

2013 ◽  
Vol 29 (2) ◽  
pp. 277-286 ◽  
Author(s):  
Zoran Ilic ◽  
A. Jevtic-Vukmirovic ◽  
M.P. Petrovic ◽  
V. Caro-Petrovic ◽  
B. Milosevic ◽  
...  
Keyword(s):  
Body Weight ◽  
Statistical Analysis ◽  
Statistical Significance ◽  
Reproductive Traits ◽  
The Body ◽  
Estrus Synchronization ◽  
Body Weights ◽  
The Difference ◽  
Mating Method ◽  
Birth Type

Estrus synchronization methods was use to control the reproductive traits of sheep, as well as bringing more females at the same stage of estrus and ovulation. According to the points mentioned above, the aim of the present study was to investigate and compare mating method and influence of fixed factors on birth and weaning weight of lambs. Statistical analysis showed that exist difference in the body weights between genotypes of lambs. In the first group, the difference in weight of lambs at birth, regardless of mating method was not significant (P> 0.05), while in the second group, the difference was slightly significant (P <0.05). As for the birth type, sex and within the same genotype, there was a statistical significance (P <0.05) between singles obtained naturally, between the triplets obtained naturally and between triplets received hormonal method. All the differences between body weight at 30 days (mating method, sex and birth type under the same genotype) were statistically significant (P <0.05).The determined differences in the body weights at 60 days (sex, mating method and type of birth under the same genotype) were statistically significant (P <0.05). The results showed that the differences (mating method, sex and type of birth under the same genotype) were statistically significant (P <0.05), except in between body weight at 90 days in twins among two genotypes obtained by natural method, which were not statistically significant (P> 0.05).

Effect of Sex on the Body Weights of Pure Breed Sahiwal Calf under the High Humid Conditions of Assam

2020 ◽  
Author(s):  
Upasana Baruah ◽  
Purabi Kaushik ◽  
G.C. Das ◽  
D. Kalita ◽  
T.K. Amonge ◽  
...  
Keyword(s):  
Analysis Of Variance ◽  
Genetic Improvement ◽  
The Body ◽  
Veterinary Science ◽  
Cattle Farm ◽  
North East India ◽  
North East ◽  
Humid Condition ◽  
Body Weights ◽  
Sahiwal Cattle

Background: Sahiwal is an outstanding milch breed of cattle originated from the Sahiwal area, Montgomery district of Punjab in Pakistan. Performance evaluation of this breed in the high humid condition of north-east India is very much limited. Assam Agricultural University is maintaining a pure herd of Sahiwal cattle in the College of Veterinary Science, Khanapara since August 2017 to conserve, propagate and bring about genetic improvement of this breed.Methods: The study was carried out in Sahiwal cattle farm, College of Veterinary Science, Assam Agricultural University, Khanapara, Guwahati by utilizing 25 numbers of Sahiwal calves. Least squares analysis of variance technique (1975) was undertaken to analyze the body weights of calves at monthly intervals up to six months of age. Result: Overall mean for body weights of calves were found as 26.96 ± 0.27 kg, 32.03 ± 0.47 kg, 37.03 ± 0.62 kg, 42.91 ± 0.76 kg, 48.45 ± 0.77 kg, 55.22 ± 0.77 kg, and 62.08 ± 0.88 kg at the day of birth, 1st month, 2nd month, 3rd month, 4th month, 5th month and 6th month respectively. Analysis of variance revealed that the bodyweight of male calves was significantly heavier than that of the female calves ( less than 0.05).

A note on non-genetic factors affecting body weights of Bikaneri sheep (Magra strain)

1971 ◽  
Vol 13 (2) ◽  
pp. 349-351 ◽  
Author(s):  
S. C. Chopra ◽  
R. M. Acharya
Keyword(s):  
Least Squares ◽  
Genetic Factors ◽  
The Body ◽  
Factors Affecting ◽  
Body Weights

SUMMARYThe least squares analysis on birth, weaning, 6-month and yearling weights in Magra lambs showed that years of lambing, age and weight of dam at lambing and sex of lamb significantly affected all the body weights except the age of dam which did not significantly affect 6-month and yearling weights. Adjustment of these weights for significant effect will be necessary in obtaining estimates of genetic and phenotypic parameters.

Comparing treatment means correctly and appropriately

1985 ◽  
Vol 15 (6) ◽  
pp. 1142-1148 ◽  
Author(s):  
Carl W. Mize ◽  
Richard C. Schultz
Keyword(s):  
Analysis Of Variance ◽  
Multiple Comparison ◽  
Response Models ◽  
Major Treatment ◽  
The Mean ◽  
The Difference ◽  
Set Up ◽  
Multiple Comparison Procedures ◽  
Range Test ◽  
Selection Of

Many researchers set up an experiment, make measurements, do an analysis of variance, calculate the mean response for each treatment, and then try to decide if the treatment means are significantly different and why. Duncan's multiple-range test is frequently used to test the difference among treatment means. It is, however, only one of a number of techniques that can be used to examine treatment means. Some researchers are unaware of the different techniques and that the interpretation of the results of an experiment can be strongly influenced by the technique used. In fact, using an inappropriate technique can lead to making incorrect recommendations and to completely missing major treatment effects. Selection of the appropriate technique to use for a particular experiment depends upon the nature of the treatments and the objectives of the research. This paper discusses four techniques (ranking treatment means, multiple comparison procedures, fitting response models, and using contrasts to make planned comparisons) that can be used to examine treatment means and presents examples of each one.

An Application of Least Squares Method to the Solution of the Inverse Problem of Heat Conduction

1963 ◽  
Vol 85 (4) ◽  
pp. 378-379 ◽  
Author(s):  
Irving Frank
Keyword(s):  
Experimental Data ◽  
Inverse Problem ◽  
Heat Conduction ◽  
Least Squares ◽  
Heat Input ◽  
Least Squares Method ◽  
Least Square Method ◽  
The Body ◽  
Least Square

When the temperature of a body at some point is known, it is generally possible to determine the rate of heat input to the surface of the body. However, when the temperatures are determined experimentally, it will be found that there is some uncertainty in the solution for the rate of heat input. It is suggested that a least square method be used to determine the rate of heat input which best fits the experimental data.

scholarly journals WOOL AND BODY GROWTH IN LAMBS DURING THE FIRST 14 MONTHS OF LIFE

1961 ◽  
Vol 41 (1) ◽  
pp. 78-88 ◽  
Author(s):  
S. B. Slen ◽  
E. C. Banky
Keyword(s):  
Growth Rate ◽  
Quadratic Function ◽  
Growth Period ◽  
The Body ◽  
Sectional Area ◽  
Cross Sectional ◽  
Daily Rate ◽  
Body Weights ◽  
The Difference ◽  
Fleece Weight

Data from 290 grade Corriedale sheep, ranging from 1 to 428 days of age, were used to study the relationships between age and the following characteristics: body weight, staple length, fibre thickness, and clean fleece weight. The difference between means and regressions for sex and type of birth also were evaluated.Body weights increased during the growth period from 50 to 428 days of age but, after 300 days, approached constancy asymptotically. The body weights of single lambs were greater (p <.01) than those of twins; also, wethers were heavier than females at all ages. The average daily rate of gain was higher, though not significantly, for singles and wethers than for twins and females, respectively. However, in the single lambs, the difference in rate of gain between wethers and ewes was significant (p <.05).Staple lengths snowed a declining growth rate with progressing age whereas fibre cross-sectional area showed a linear increase.The increase in clean fleece weight with age was expressed by a quadratic function. The difference in fleece weights between sexes were negligible and the rates of increase were essentially the same. However, there were significant differences (p <.01) in means and regressions between singles and twins.

Genetic and non-genetic factors affecting body weights in Sahiwal × Friesian crosses

1972 ◽  
Vol 14 (3) ◽  
pp. 295-298 ◽  
Author(s):  
V. K. Taneja ◽  
P. N. Bhat
Keyword(s):  
Birth Weight ◽  
Analysis Of Variance ◽  
Genetic Factors ◽  
Dairy Farms ◽  
Least Square ◽  
Factors Affecting ◽  
Genetic Groups ◽  
Body Weights

SUMMARYThe data were collected from seven dairy farms in India on Sahiwal × Friesian crosses over a period of 30 years (1937–1966). There were nine distinct genetic groups (grades); Sahiwal, 1/8, 1/4, 3/8, 1/2, 5/8, 3/4 and 7/8 Friesian and Indian Friesians (animals having 15/16 or more Friesian blood).Least-square analysis of variance was run to examine the effects of grades, farms, periods, seasons, and breed of sire on body weights at birth, 19 weeks, 12 months and 3 years. The effects due to grades, farms and periods were significant for all the traits. The effects due to season and breed of sire were significant for all traits except for weight at 3 years.The least-square constants showed that, with increase in Friesian inheritance, birth weight increased considerably, while the increase in body weights at 19 weeks, 12 months and 3 years was only marked up to the 1/2-Friesian group.

scholarly journals Comparative morphometry of the brainstem of the male and female Helmeted Guinea Fowl (Numida meleagris)

2018 ◽  
Vol 51 (3) ◽  
pp. 121-124
Author(s):  
Mohammed Adam ◽  
Barth Izuchukwu Onyeanusi ◽  
Joseph Olusegun Hambolu ◽  
Suleiman Folorunsho Ambali ◽  
Chikera Samuel Ibe
Keyword(s):  
Medulla Oblongata ◽  
Guinea Fowl ◽  
The Body ◽  
Base Line ◽  
Male And Female ◽  
Numida Meleagris ◽  
Body Weights ◽  
The Mean ◽  
The Difference ◽  
The Brain

Abstract The aim of this study was to obtain base-line morphometric data on the whole brain and brainstem in the adult male and female helmeted guinea fowl (Numida meleagris), and compare the result in the two sexes. Brain samples of seventy adult helmeted guinea fowls, comprising 35 males and 35 females, intended for slaughter, were extracted for the study. The body weights for both male and female helmeted guinea fowls were 1247 ± 5.51 g and 1230 ± 4.85 g, respectively. The mean brain weights were 3.39 ± 0.02 g and 3.47 ± 0.18 g for male and female, respectively, and the difference in the values was not significant (P > 0.05). The lengths of the brain and medulla oblongata, as well as the lengths of the midbrain and mesencephalic tectum, did not differ between the two sexes. Neither the mean weights nor lengths of the pons differed between the two sexes. In conclusion, the results of this study showed that there was no sex dimorphism observed in the morphometry of the midbrain, medulla oblongata and pons in the helmeted guinea fowl.

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