The effects of genotype on embryonic development in eggs from divergent turkey genotypes

Lilburn, M. S.; Antonelli, Alexandre Coutinho

doi:10.3382/ps.2011-01883

Cited by 7 publications

(2 citation statements)

References 42 publications

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“…Also, Nestor et al (2005) achieved high BW at 16 weeks in the crosses of turkeys whereas the dam was a heavy line and low when the dam was from the light line. Many studies provided evidence that BW at hatching day depends most of all on egg weight, and thus directly on the genotype of the dam (Oblakova et al, 2008;Lilburn and Antonelli, 2012). This explained the higher BW on the hatching day of CC and BC turkeys compared to the BB and CB birds.…”

Section: Discussionmentioning

confidence: 99%

Assessment of Growth, Carcass Traits, and Some Physiological Parameters of Bronze, and White Turkeys (Meleagris Gallopavo), and Their Crosses

Abdel-Kafy

Zayed²,

Behiry³

et al. 2022

EPSJ

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Crossbreeding has the advantage of benefiting from the effect of heterosis. A current crossbreeding experiment was conducted using Black Bronze (BB) and Large White Converter (CC) turkeys. Artificial insemination of 40 mature hens of CC with 6 toms of BB, and 40 mature hens of BB with 6 toms of CC were used to obtain F1 of the two turkey crosses (CB and BC) respectively. A total of 160 poults of the four groups of turkeys were taken in the evaluation in this study. This evaluation included some growth and carcass traits, and some biochemical blood and oxidative profile parameters. It was noticed that the body weight at different ages was higher in the large white turkeys-Converter, CC group, and then the crossbreed BC (BB toms × CC hens) group. The means of daily weight gain (DWG) and feed intake (FI) at different periods of age were highly significant (P≤0.05) high in CC followed by BC and CB turkeys. Feed conversion (FC) reached the lowest values in CC while the BB genotype was having the highest values. The crosses showed significant values in percentages of carcass/live body weight compared to BB. The hind part of the carcass differed significantly (P≤0.05) among the four groups of birds regardless of other parts (neck, wing, and chest/carcass). Blood serum protein, glucose, urea, and albumin levels were not significantly affected by the genotype. However, globulin and triglyceride levels were affected significantly (P≤0.05) by the genotype. Oxidative profile parameters were affected significantly (P≤0.05) by the genotype. The crossbreeding parameters obtained showed that the additive effect was significant for DWG and FI during the periods from hatching to 24 weeks while it was not significant for FC. The additive effects were not significant for carcass traits, and biochemical blood profile parameters except for glutathione reductase and total antioxidant capacity. The cross effect was significant for DWG during the periods hatching-12, only. The cross effect in FI during the period from hatching to 24 weeks was significant while it was not significant in FC. The cross effects of the two reciprocal crosses were not significant in all carcass parameters and biochemical blood profiles. The oxidative profile was not significantly different in the cross effect except for hydrogen peroxide (HP) and; malondialdehyde. Presumably, the crossbreeding between large white Converter turkeys with Bronze turkeys was to benefit from the effect of heterosis. The crosses have a growth performance and carcass traits higher with a relative growth advantage when the hens were Hybrid Converters. The first generation in crossbreeding could be submitted to selection for the constitution of a synthetic strain.

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Section: Discussionmentioning

confidence: 99%

Assessment of Growth, Carcass Traits, and Some Physiological Parameters of Bronze, and White Turkeys (Meleagris Gallopavo), and Their Crosses

Abdel-Kafy

Zayed²,

Behiry³

et al. 2022

EPSJ

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“…By its biological and economic characteristics -this is one of the most promising types of poultry [6][7][8][9]. The biological diversity of poultry by form of breeds, populations, lines is a necessary factor in improving existing and creating new breeding forms [10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Description of productive qualities of Russian selection turkeys

et al. 2020

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The article presents results of comparative assessment of productivity and tribal qualities of six breeds of turkeys at the gene pool economy selection and genetic center «North Caucasus Zonal Poultry Experimental Station» and populations of blue and red turkeys. Among the studied breeds best egg production for primary and middle layers ащк 20 weeks of productive period is noted in silver North Caucasian breed: 50,33 and 64,10 eggs respectively, at intensity 45,19%. For the turkeys of the new gene pool this indicator was more in blue turkeys – 49,32 and 59,28 eggs for primary and middle layers respectively. The highest egg mass was marked in white North Caucasian turkeys – 82,7 g, with Haugh Units (HU) highest value and form index – Uzbek pale yellow breed – 83,6; 69,3% respectively. Thus, we can conclude that selection with domestic breeds of turkeys in centre of collective usage Bioresource breeds collection Selection and Genetic Center «North Caucasus Zonal Poultry Experimental Station» is conducted up to the mark; breeds are preserved and rationally used depending on the tasks. Silver turkeys of the North Caucasian breed and blue turkeys of the new gene pool possessed the best productive qualities.

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REPRODUCTIVE FUNCTION IN HYBRID POULTRY. II. AN IMPACT OF BREEDING FOR TRAITS OTHER THAN PRODUCTIVITY (review)

Zabudskii¹

2015

S-h. biol.

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Herein, the data are summarized on the impact of such selection criteria as poultry cannibalism, ascites resistance, stress responsiveness, and primary immune response to reproductive function in poultry. The selection for one of these signs changes the productivity and other body functions. High-productive meat crosses differ from slow-growing chicks in a susceptibility to ascites (R. Wideman, 2001). Broilers' mortality because of ascites makes 5-10 %, and at the lowered temperature of the environment can reach 50 % calculated from world production (H. Pavlidis et al., 2007). Prerequisites to development of the disorder are formed during embryogenesis (E. Decuypere еt al., 2000). In the embryos who are the descendants of ascite resistant poultry (L ), a relative heart weight is reliable higher, and pipping shells and a hatching occur earlier, than in L + genotype lines for which the hypothyroidism and tachycardia are characteristic (D. Luger et al., 2002). An observed increase in egg incubation period in L + lines can be caused by lower activity of thyroid gland and an increased pCO 2 in egg air camera, and as a result, the embryos suffered from hypoxia. A positive correlation is revealed between the development of lungs and the thyroid gland activity during embryogenesis, i.e. the lungs volume is the larger the higher thyroidal hormone rate, and vice versa (M. Hassanzadeh et al., 2008). In the chickens with better developed lungs, grown up under chronic hypoxia, the mortality from ascites was reliably lower. In L + and L  broilers the mortality was 93.2 and 9.0 %, respectively (S. Druyan, 2009). The heart beating in L + and L  1-day chickens differed, being on average 435 and 404 beats per minute, respectively, but to the day 17 the difference practically leveled (419 and 417 beats per minute, respectively) due to a decreased rate in L + and an increased rate in L . Divergent selection for the feather pecking behavior causes differentiation in reactivity of the neuro-endocrine and immune systems (A. Buitenhuis, 2006). There are the evidences that the optimized incubation protocols for meat hens can prevent broiler chicks from ascites and improve safety of the poultry. Feather pecking reduced in the course of selected is associated with improvements in egg production (number and weight of eggs), but the deterioration in the quality of hatching eggs, the results of incubation, the state of derived chickens and changes of stress responsiveness and(or) immune response. So, the feather pecking rate was reliable lower in L  than in L + poultry, and the number and weight of eggs laid during a month are higher (i.e. 0.38 and 2.01 feather pecking per hour, 1223 and 1132 g, 24.4 and 18.3 eggs, respectively). However, the egg quality in L + hens was better compared to L  , with the Haugh units of 73.0 and 64.9, shell thickness of 38.1 and 37.0 mm, and yolk ration of 30.6 and 29.5 %, respectively (G. Su, 2006). Selection for humoral immune response causes the metabolic changes and influences on the synthesis of prote...

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The effects of genotype on embryonic development in eggs from divergent turkey genotypes

Cited by 7 publications

References 42 publications

Assessment of Growth, Carcass Traits, and Some Physiological Parameters of Bronze, and White Turkeys (Meleagris Gallopavo), and Their Crosses

Assessment of Growth, Carcass Traits, and Some Physiological Parameters of Bronze, and White Turkeys (Meleagris Gallopavo), and Their Crosses

Description of productive qualities of Russian selection turkeys

REPRODUCTIVE FUNCTION IN HYBRID POULTRY. II. AN IMPACT OF BREEDING FOR TRAITS OTHER THAN PRODUCTIVITY (review)

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