The effect of diallel crossing (4 × 4) of different strains of Pekin ducks on body weight and the weight of carcass tissue components

2018 ◽  
Author(s):  
Alina Górska ◽  
J. Górski ◽  
Katarzyna Wolska ◽  
D. Kokoszyński
Keyword(s):  
Body Weight ◽  
Pekin Ducks ◽  
Diallel Crossing ◽  
Different Strains

scholarly journals Investigation on the possibility of spontaneous cure of mice infected with different strains of Trypanosoma cruzi

1994 ◽  
Vol 36 (6) ◽  
pp. 481-484 ◽  
Author(s):  
Juracy B. Magalhães ◽  
Sonia G. Andrade
Keyword(s):  
Body Weight ◽  
Trypanosoma Cruzi ◽  
Chronic Infection ◽  
Initial Phase ◽  
Newborn Mice ◽  
Blood Examination ◽  
Spontaneous Cure ◽  
Single Exception ◽  
Duration Of Infection ◽  
Different Strains

Seventy Swiss mice chronically infected with different strains of Trypanosoma cruzi, with persistently negative parasitemia on routine blood examination were parasitologically investigated to find out whether spontaneous cure occurred. Duration of infection varied from 90 to 250 days in the initial phase of this investigation. Parasitological tests consisted of daily direct blood examination performed during at least 25 days, followed by xenodiagnosis and subinoculation of blood into newborn mice. Mice that persisted negative were treated with Cyclophosphamide with one dose of 250 mg/kg of body weight and then investigated by direct blood examination, xenodiagnosis and subinoculation. A second dose of 250 mg/kg b. w. was given to the persistently negative mice. With one single exception, all mice showed positive parasitological tests in the different stages of the present investigation and we conclude that spontaneous cure did not occur in this group, which is representative of the chronic infection with different strains of T cruzi.

scholarly journals Correlation and path coefficient analysis of body weight and morphometric traits of two exotic genetic groups of ducks in Nigeria

2015 ◽  
Vol 44 (1) ◽  
pp. 1-9 ◽  
Author(s):  
A Yakubu ◽  
MM Muhammed ◽  
MM Ari ◽  
IS Musa-Azara ◽  
JN Omeje
Keyword(s):  
Body Weight ◽  
Path Analysis ◽  
The Body ◽  
Path Coefficient ◽  
Body Parts ◽  
Leg Length ◽  
Morphometric Traits ◽  
Thigh Circumference ◽  
Pekin Ducks ◽  
Plateau State

The study aimed at describing objectively the interdependence between body weight (BWT) and morphometric traits in Khaki Campbell and Pekin ducks using multivariate path analysis technique. Measurements were taken on one hundred and ninety seven (197) randomly selected 10-week old Khaki Campbell and Pekin ducks, respectively in Plateau State, Nigeria. The birds were reared on deep litter in a semi-intensive system where they were kept in a fenced area provided with water ponds and locked up in the poultry house during the night. The body parts measured were, body length (BDL); thigh length (THL); thigh circumference (THC); breast circumference (BTC); bill length (BLL); neck length (NKL); neck circumference (NKC); shank length (SHL); shank width (SHW); total leg length (TLL) and wing length (WL). General linear model was used to study genotype and sex effects. Pekin ducks had a superior advantage (p<0.05) over their Khaki Campbell counterparts in all the body parameters estimated. Sexual dimorphism (p<0.05) was in favour of male ducks.  Pairwise phenotypic correlations between BWT and morphometric traits were positive and significant (p<0.01), ranging from 0.38-0.95 and 0.35-0.92 for Khaki Campbell and Pekin ducks, respectively. Path analysis revealed that BDL was the variable of utmost importance directly influencing BWT in male Khaki Campbell and Pekin ducks (path coefficient=0.535 and 0.508, respectively; p<0.01) while BTC and SHL were the most responsible parameters affecting BWT in female Khaki Campbell and Pekin ducks [path coefficient=0.594 (P<0.01) and 1.197 (p<0.05), respectively]. The optimum regression models for the prediction of BWT in Khaki Campbell ducks included BDL, SHL, BTC and NKC (male)  and BDL, WNL and BTC (female); while in their Pekin counterparts, BDL, BLL and BTC (male) and BDL and SHL (female) were incorporated.DOI: http://dx.doi.org/10.3329/bjas.v44i1.23112            Bang. J. Anim. Sci. 2014. 44 (1): 1-9

scholarly journals Evaluasi Performa dan Income Over Feed & Chick Cost (IOFCC) Tiga Strain Ayam Broiler yang Beredar di Aceh

2020 ◽  
Vol 20 (2) ◽  
Author(s):  
Zulfan Zulfan ◽  
Zulfikar Zulfikar
Keyword(s):  
Body Weight ◽  
Broiler Chickens ◽  
Broiler Chicken ◽  
Body Weight Gain ◽  
Economic Value ◽  
Feed Conversion ◽  
Final Body Weight ◽  
Randomized Design ◽  
Different Strains ◽  
Better Than

ABSTRAK. Penelitian ini bertujuan untuk mengevaluasi performa tiga strain ayam broiler yang umumnya dipelihara di Aceh. Materi yang digunakan adalah 150 ekor anak ayam broiler (DOC) strain Cobb 500, CP 707, dan MB 202 masing-masing berjumlah 50 ekor. Penelitian ini menggunakan Rancangan Acak Lengkap (RAL) yang terdiri dari 3 perlakuan dan 5 ulangan. Setiap ulangan merupakan unit percobaan yang masing-masing terdiri dari 10 ekor anak ayam. Perlakuan adalah tiga strain ayam broiler: Cobb 500 (P1), CP 707 (P2), dan MB 202 (P3). Parameter yang diamati meliputi pertambahan berat badan, konsumsi ransum, konversi ransum (FCR), mortalitas, dan Income over Feed and Chick Cost (IOFCC). Hasil penelitian memperlihatkan performa broiler dipengaruhi oleh jenis strain. Strain MB 202 dan CP 707 memiliki bobot badan akhir (6 minggu) dan konsumsi ransum nyata (P0,05) lebih tinggi daripada Cobb 500. Angka konversi ransum tidak memperlihatkan perbedaan yang nyata antara ketiga strain pada semua umur panen. Nilai IOFCC tertinggi dipengaruhi oleh jenis strain dan lama pemeliharaan. Dari hasil penelitian dapat disimpulkan bahwa performa broiler dipengaruhi oleh kemampuan adaptasi strain terhadap iklim setempat (pesisir Aceh) pada periode berbeda-beda yang dapat memengaruhi tingkat keuntungannya. Strain Cobb 500 memiliki kemampuan adaptasi lebih baik selama periode awal, sedangkan CP 707 dan MB 202 selama periode akhir. (Evaluation of performances and income over feed chick cost (iofcc) of three broiler chicken strains commonly marketed in Aceh) ABSTRACT. The study aimed to evaluate the performances and Income over Feed and Chick Cost (IOFCC) of three broiler chicken strains commonly marketed in Aceh. As many as 150 chicks of three different broiler strains (50 birds each) were used in this study. The study was performed into Completely Randomized Design (CRD) consists of 3 treatments and 5 replications creating 15 experimental units containing 10 birds each. The treatments were 3 different strains of broiler chickens i.e. Cobb 500, CP 707, and MB 202. The birds were reared up to 6 weeks to expose their performances recorded as final body weight, body weight gain, feed intake, and feed conversion, as well as mortality. Economic value was evaluated by calculating IOFCC. Results of study showed that performances of broilers were significantly (P0,05) influenced by the strains. Strains MB 202 and CP 707 represented more superior than Cobb 500 for 5−6 weeks of raising periods. However, the later was not inferior during initial phase close to 4 weeks. There were no significant differences in FCR among all strains for different ages. The IOFCC related to the strains and their marketing ages. The highest IOFCC was obtained by Cobb 500, CP 707, and MB 202 as they were sold at the ages of 4, 5, and 6 weeks, respectively. In conclusion, the achievements of the performances in various broiler strains were affected by the site climate (Aceh) in different stages of their ages. Cobb 500 had proper adaptation during starter, while CP 707 and MB 202 appeared seem to be better than Cobb 500 during finisher period.

scholarly journals Growth Performance, Body Measurements, Carcass and Some Internal Organs Characteristics of Pekin Ducks

Animals ◽  
2019 ◽  
Vol 9 (11) ◽  
pp. 963 ◽  
Author(s):  
Dariusz Kokoszyński ◽  
Rafał Wasilewski ◽  
Mohamed Saleh ◽  
Dariusz Piwczyński ◽  
Henrieta Arpášová ◽  
...  
Keyword(s):  
Body Weight ◽  
Growth Performance ◽  
Liver Weight ◽  
Carcass Composition ◽  
The Body ◽  
Body Measurements ◽  
Internal Organs ◽  
Pekin Ducks ◽  
Unrestricted Access ◽  
Access To Water

Native breeds of ducks have been the subject of many studies in the past, yet the relevant knowledge is still incomplete and needs to be further expanded. The objective of this study was to provide information about differences in growth performance, dressing percentage, carcass composition and digestive morphometry among three lines of Pekin ducks from conservation flocks raised in Poland. The study used 180 sexed Pekin ducks—30 males and 30 females of line P33 (ducks of Polish origin), 30 males and 30 females of line P8 (ducks of Danish origin), and 30 males and 30 females of line P9 (ducks of French origin). Throughout the study (49 d), ducks were confined indoors in six pens. Birds were fed complete commercial diets ad libitum and had unrestricted access to water. The compared lines of ducks differed significantly in body weight from 1 to 49 d of age except of ducks of both sexes at 14 d. At 49 d of age, significant differences were observed between the tested ducks in all the body measurements. Duck genotype had a significant effect on preslaughter body weight, carcass weight and breast muscle, neck and remainders contents, caeca length, liver weight and gizzard percentage. The results show that the tested ducks were significantly different and unique, mainly in terms of the body biometric characteristics.

scholarly journals Comparative Study On Nursing Of Different Strains Of Tilapia (Oreochromis niloticus) In Bangladesh

2016 ◽  
Vol 5 (2) ◽  
pp. 98-106
Author(s):  
MA Hossain ◽  
MJ Islam ◽  
MM Uddin ◽  
MM Hossain ◽  
M Kunda
Keyword(s):  
Growth Rate ◽  
Body Weight ◽  
Survival Rate ◽  
Body Weight Gain ◽  
Stocking Density ◽  
Experimental Period ◽  
Mustard Oil ◽  
Feed Conversion ◽  
Different Strains ◽  
The Individual

This study was conducted to investigate and compare the growth performance of four Tilapia strains in hapa nursing with the aim to find out the best strain of tilapia. The research was conducted by four treatments with five replicates each. The tilapia fry were collected from, BFRI source from BFRI HQ, Mymensingh stocked in Treatment-1; unknown source from Hi-Tech Tilapia Hatchery Dagoanbhuiya, Feni in Treatment-2, Philipine strain from Green Field Tilapia Hatchery, Laxmipur in Treatment-3 and fry from Breeding Cohort, Sonar Bangla Hatchery, Bamna, Barguna in Treatment-4. The Individual stocking weight (g) of fry was average 0.01g. The fries were stocked in 12 hapa at same stocking density of 1200 fish/m2. Each of the hapa was 2m × 1m × 1m size and fixed in an earthen ponds. Supplementary feed with 31.29% of protein level consisting of rice bran (25%), mustard oil cake (15%), wheat flour (30%) and fish meal (30%) was given at the rate of 40% of their body weight per day manually, four times a day at the beginning of the experimental period and reduced to 25% of their body weight and continued up to harvesting period. The results showed that fry of Treatment-4 strain was the best strain and had significantly (p < 0.05) higher final mean body weight (FMBW), mean body weight gain (MBWG), specific growth rate (SGR) (9.75%), gross yield (GY) (2.13) and Net yield (NY) (2.12) than the Treatment-1 , Treatment-2 strains and Treatemnt-3 strain. Treatment-4 strain had the fastest growth rate, whereas the lowest performing strain was that from Treatment-2. We also analyzed survival rate of the fish from stocking to harvest, survival rate was highest in Treatment-4 strain (80%) where lowest is Treatment-3. Treatment-4 stain also showed the best feed conversion ratio (FCR) 1.62 than others. Considering the overall performance it can be concluded that tilapia strain collected from Breeding Cohort source is best among the four strains. However, further research may still be needed to compare more strains from different water body to evaluate the genetic potential for Tilapia.International Journal of Natural Sciences (2015), 5(2) 98-106

ÜBER DEN EXTREMEN GESCHLECHTS-DIMORPHISMUS IM WACHSTUM DER MOSCHUSENTE, CAIRINA MOSCHATA FLEMM.

1964 ◽  
Vol 45 (1) ◽  
pp. 114-121 ◽  
Author(s):  
Hans von Faber
Keyword(s):  
Body Weight ◽  
Sex Difference ◽  
Bone Growth ◽  
The Body ◽  
Epiphyseal Cartilage ◽  
List Type ◽  
Long Bones ◽  
Pekin Ducks ◽  
Leg Bones ◽  
Average Body

ABSTRACT The growth of the long bones and the development of the epiphyseal cartilage were studied in 50 male and 33 female Muscovy ducks from the time of hatching up to the 18th week. An average body weight was measured of 1990 ± 18 g in the females and of 2838 ± 99 g in the males after 10 weeks. No further increase in the body weight was noted in the females. The males continued to grow up to the 18th week and reached a final weight of 4101 ± 62 g. In the femur, the tibiotarsus, and the tarsusmetatarsus a sex difference occurred in the 2nd week and became significant after 4 weeks. The greatest difference was observed in the tibiotarsus which reached a length of 125.4 ± 0.7 mm in the male and 103.2 ± 1.1 mm in the female after 10 weeks. In both sexes the greatest increase of bone length was noted within the first 4 weeks. The bone growth ceased and the epiphyseal cartilage disappeared with about 8 weeks in the female and with about 10 weeks in the male. The humerus, the ulna and the radius were somewhat larger in the female than in the male after 4 weeks. Thereafter a more rapid growth was seen in the male. The greatest sex difference was observed in the humerus which measured 136.0 ± 1.6 mm in the male and 113.8 ± 0.9 mm in the female after 10 weeks. In contrast to the leg bones the greatest increase in body length occurred between the 6th and the 8th week. The bone growth ceased after 10 weeks in the female, and after 12 weeks in the male. Growing males which were treated with 35 mg stilboestrol weighed 2034 ± 90 g after 10 weeks. The long bones only grew to 85–90 % of the normal length. Birds which were allowed to survive a further 8 weeks after the treatment, attained a body weight of 3494 ± 111 g without any further increase in the length of the leg bones and only a slight increase in the length of the wing bones. The dwarfing effect of stilboestrol was not caused by a precocious disappearance of the epiphyseal cartilage. An identical treatment with stilboestrol had in Pekin ducks no effect on body weight or on the long bones.

scholarly journals Effects of Pantothenic Acid Supplementation on Growth Performance, Carcass Traits, Plasma Parameters of Starter White Pekin Ducks Fed a Corn–Soybean Meal Diet

Animals ◽  
2021 ◽  
Vol 11 (10) ◽  
pp. 2872
Author(s):  
Jing Tang ◽  
Yongbao Wu ◽  
Bo Zhang ◽  
Zhiguo Qi ◽  
Dawei Luo ◽  
...  
Keyword(s):  
Body Weight ◽  
Growth Performance ◽  
Carcass Traits ◽  
Pantothenic Acid ◽  
Basal Diet ◽  
Daily Weight Gain ◽  
Plasma Parameters ◽  
Growth Depression ◽  
Acid Supplementation ◽  
Pekin Ducks

This study aimed to evaluate the effects of different dietary pantothenic acid levels on growth performance, carcass traits, and plasma biochemical parameters of starter Pekin ducks from 1 to 21 days of age, as well as the pantothenic acid requirement of starter ducks. A total of 384 one-day-old male white Pekin ducklings were assigned randomly into 6 dietary treatments, each with 8 replicate pens of 8 ducks. Ducks were fed conventional basal corn–soybean diets containing 8.5, 10.5, 12.5, 14.5, 16.5, and 18.5 mg/kg pantothenic acid for 21 days. Growth depression, poor pantothenic acid status, fasting hypoglycemia, and elevated plasma uric acid (UA) content were observed in the ducks fed the pantothenic acid-deficient basal diet (p < 0.05), and these adverse effects were ameliorated by pantothenic acid supplementation. Among all ducks, the birds fed the basal diet with no supplementation of pantothenic acid had the lowest body weight, average daily weight gain (ADG), average daily feed intake (ADFI), breast meat yield, and plasma pantothenic acid and glucose contents (p < 0.05), and the greatest plasma UA content (p < 0.05). In addition, all these parameters showed a linear or quadratic response as dietary pantothenic acid levels increased (p < 0.05). According to broken-line regression, the pantothenic acid requirements of starter male white Pekin ducks for body weight, ADG, and plasma pantothenic acid content were 13.36, 13.29, and 15.0 mg/kg, respectively. The data potentially provides theoretical support for the utilization of pantothenic acid in duck production.

scholarly journals Effects of Phytase Supplementation to Diets with or without Zinc Addition on Growth Performance and Zinc Utilization of White Pekin Ducks

Animals ◽  
2019 ◽  
Vol 9 (5) ◽  
pp. 280 ◽  
Author(s):  
Youssef A. Attia ◽  
Nicola F. Addeo ◽  
Abd Al-Hamid E. Abd Al-Hamid ◽  
Fulvia Bovera
Keyword(s):  
Body Weight ◽  
Feed Intake ◽  
Raw Materials ◽  
Body Weight Gain ◽  
Basal Diet ◽  
The Body ◽  
Control Group ◽  
Feed Conversion ◽  
Pekin Ducks ◽  
Feed Digestibility

The effect of phytase and inorganic Zn supplementation was studied in 180 male White Pekin ducks (WPD) from 1 to 56 days of age. The birds were divided into four groups fed the same basal diet (containing 26 ppm of Zn from raw materials): the control group did not receive Zn supplementation; the second group was supplemented with 30 ppm of Zn oxide; and the third and fourth groups were fed the control and the 30 ppm diets, respectively, both supplemented with 500 U of E. coli phytase. Each group contained five replicates of nine ducks. The body weight and feed intake were recorded at 1, 28 and 56 days of age. At 56 days of age, five birds/group were used to measure feed digestibility and five other birds/group were slaughtered. Zn at 30 ppm increased the body weight gain (BWG, p < 0.01) and feed intake (p < 0.05) and improved the feed conversion (FCR, p < 0.05) of the growing ducks. The Zn retention and Zn level in the excreta increased (p < 0.01) due to Zn supplementation. The addition of phytase improved BWG (p < 0.01) and FCR (p < 0.05) of growing ducks. The use of phytase reduced (p < 0.01) the level of Zn in duck excreta. Phytase supplementation to the basal diet at 30 ppm seems to be adequate to meet Zn requirements for ducks without further Zn additions.

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