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Comparison of Several Turning Frequencies During the Storage Period of Red-Legged Partridge (Alectoris rufa) Hatching Eggs Rev. Bras. Ciênc. Avic.
González-Redondo,P; Martínez-Domínguez,AR.
ABSTRACT The effects of three egg-turning regimes during the pre-incubation storage period on egg weight loss, hatchability, embryonic mortality, chick weight at hatching and incubation length of red-legged partridge (Alectoris rufa) compared with unturned eggs were investigated. Two hundred eggs were allocated to four 50-egg batches stored at 15ºC and 80% RH that being turned one, four and 24 times a day or remaining unturned, respectively. Eggs were incubated at 37.8ºC and 55% RH during the first 21 days and at 37.5ºC and 75% RH until hatching. Fertility was 70.5% and a good hatchability performance was obtained, characterised by 81.6% hatchability of fertile eggs, and weight losses of 0.78% during storage and of 10.04% during the first 21 days of...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Egg turning; Game farming; Hatchability; Red-legged partridge; Egg storage.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000300301
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Efeito da selecao quanto ao peso corporal nas caracteristicas reprodutivas em linhagens de frangos de corte. Repositório Alice
SCHMIDT, G.S.; FIGUEIREDO, E.A.P. de; LEDUR, M.C.; MUNARI, D.P.; GOMES, J.P..
O objetivo deste trabalho foi estudar a resposta a selecao referente a fertilidade e eclodibilidade, baseada na performance familiar. Foram utilizadas quatro linhagens experimentais, duas comerciais (LC1 e LC2) e duas populacoes controle (LLc e PPc). As linhas paternas (LL, ZZ E LCI) foram selecionadas em relacao ao peso corporal (PC) e as maternas (PP, KK e LC2) quanto ao PC e producao de ovos, durante sete geracoes. Com relacao a fertilidade e eclodibilidade, utilizaram-se niveis independentes de descarte. Os coeficientes de regressao dos desvios entre as medias das linhagens selecionadas e controle, na geracao, quanto a fertilidade, foram: -1,01 +-0,34 (LL), -0,62 +- 0,22(ZZ), 0,58 +- 0,21 (PP) e -0,50 +- 0,11% (KK). Em termos de eclodibilidade os...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Fertilidade; Eclodibilidade; Mudanca genetica; Fertility; Hatchability; Genetic change.
Ano: 1998 URL: http://www.alice.cnptia.embrapa.br/handle/doc/89474
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Effect of Egg Position in the Incubator on Broiler Hatching Results Rev. Bras. Ciênc. Avic.
Boz,MA.
ABSTRACT This study investigated whether the effect of egg location during incubation on hatching results in broiler eggs. For this purpose, a total of 756 broiler eggs were incubated for 21 days. The eggs were divided near the door and near the fan, and distributed on top (216 eggs), 324 in the middle (324 eggs), and in the bottom (216 eggs) according to a completely randomized design (CRD). As a result of this study, no significant effect of egg location on incubation yield, hatchability, and embryonic mortalities was found (p>0.05). In some locations the eggs which were closer to the fan had generally higher hatchability (top fan 86.9%, middle fan 69.6%, and bottom fan 81.7%). The value of the incubation yield was among 67.3-85.2%. Embryonic...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Incubator temperature; Incubator position; Hatchability; Broiler hatching egg; Embryonic mortalities.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000400325
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Effect of Egg Weight on External and Internal Qualities, Physiological and Hatching Success of Japanese Quail Eggs (Coturnix coturnix japonica) Rev. Bras. Ciênc. Avic.
Hegab,IM; Hanafy,AM.
ABSTRACT This experiment was conducted to evaluate the effect of egg weight and egg physical characteristics on embryonic development, hatchability, and hatchling weight of Japanese quails (Coturnix coturnix japonica). In total, 689 eggs were classified in two categories: small (<13.5 g) or large (≥13.5 g), and different external eggshell and internal quality traits were measured. On days 6 and 14 of incubation, tissue triiodothyronine (T3) and thyroxine (T4) were extracted from embryos in both egg sizes and analyzed. Relative to internal egg-quality traits, large eggs had significantly higher yolk height, yolk diameter, yolk weight, albumen height, and albumen weight than small eggs (p≤0.01). However, Haugh unit score (p=0.27) was not significantly...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Egg size; Egg quality; Hatchability; Hormones; Parameters.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000300300
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EFFECT OF EGGSHELL COLOR ON THE EGG CHARACTERISTICS AND HATCHABILITY OF GUINEA FOWL (NUMIDA MELEAGRIS) EGGS Rev. Bras. Ciênc. Avic.
Eleroğlu,H; Yıldırım,A; Duman,M; Okur,N.
ABSTRACT The objective of this study was to determine the effects of eggshell color of guinea fowl (Numida meleagris) eggs on eggshell quality and hatchery results. The highest mean grey value (MGV), integrated density (ID), lightness (L*) and Hue angle (H*) values were obtained in eggs with lighter eggshell color. The effects of color difference (DE*) value levels on egg characteristics were evaluated. Eggshell color presented different (p<0.01) MGV, ID, L*, redness (a*), yellowness (b*), H* and Chroma (C*) values. Eggs with lighter color presented thicker eggshells and lower egg weight loss on day 25 of incubation (p<0.05) compared with intermediate and darker eggs. Eggshell color did not have any significant effect on fertility and hatchability...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Guinea fowl (Numida meleagris ); Breeder; Eggshell color; Hatchability.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000500061
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Effect of High Incubation Temperature on the Blood Parameters of Layer Chicks Rev. Bras. Ciênc. Avic.
Sgavioli,S; Santos,ET; Domingues,CHF; Quadros,TCO; Castiblanco,DMC; Andrade-Garcia,GM; Amoroso,L; Nääs,IA; Garcia,RG; Baraldi-Artoni,SM.
ABSTRACT Adequate environmental temperature control is essential for incubation efficiency. Layer breeder eggs (n=360) were weighed and distributed in a completely randomized experimental design with two treatments, consisting of two incubation temperatures (T1=37.5 °C, control; and T2=39.0 °C, hot), with two incubators per temperature, and 90 eggs per incubator, totaling 360 eggs. Hatchability, embryo mortality, and chick cloacal and body surface temperatures were not affected by incubation temperature. Eggs incubated at the hot temperature presented greater egg mass loss and higher eggshell conductance than those incubated at the control temperature. Layer chicks derived from eggs incubated at control temperature showed greater absolute weight, yolk-free...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Body weight; Cloacal temperature; Conductance; Hatchability; Loss of mass.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000600041
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Effect of In Ovo Feeding of L-Glutamine to Chick Embryos Rev. Bras. Ciênc. Avic.
Rufino,JPF; Cruz,FGG; Costa,VR; Silva,AF; Melo,LD; Bezerra,NS.
ABSTRACT In ovo feeding (IOF), injecting nutrients into the amnion of the avian embryo may enhance hatchability, gastrointestinal development and serum metabolism changes. This hypothesis was evaluated with 5 IOF solutions containing L-glutamine. Were used 315 fertile Rhode Island Red eggs were used (breeders with 32-weeks). The experimental design was completely randomized with the treatments constituted by two controls and five solutions containing L-glutamine levels with 45 replicates each. Data collected were subjected to polynomial regression at 5% of significance. Differences (p>0.05) were observed in hatchability and intermediary mortality, with a gradual lower of decrease in hatchability from the IOF of L-glutamine. The yolk sac was higher...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Aminoacid; Biotechnology; Embryo mortality; Hatchability; In ovo feeding.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000400300
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Effect of temperature on incubation period, embryonic mortality, hatch rate, egg water loss and partridge chick weight (Rhynchotus rufescens) Rev. Bras. Ciênc. Avic.
Nakage,ES; Cardozo,JP; Pereira,GT; ,SA; Boleli,IC.
The aim of this study was to determine the effects of incubation temperature (34.5; 35.5; 36.5; 37.5 and 38.5ºC), on incubation period, embryonic mortality, hatching rate, water loss and chick weight at hatch, using daily incubation of partridge (Rhynchotus rufescens) eggs. The highest hatching percentage was obtained between 35.5 and 36.5ºC. Incubation length and temperature were inversely proportional. Water loss was lower in eggs incubated at low temperatures as compared to high temperatures. There was no difference among incubation temperatures in absolute and relative hatchling weights. Early embryonic mortality increased at low temperatures (<35.5ºC), whereas intermediate and late embryonic mortality increased at high temperatures (>36.5ºC)....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Incubation; Hatchability; Mortality; Temperature; Water loss.
Ano: 2003 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2003000200007
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EFFECT OF THERMAL STIMULATION IN EMBRYOS FROM COBB®GENETIC STRAIN UNDER COMMERCIAL SCALE REA
Flores,Fernanda; Nääs,Irenilza De A.; Garcia,Rodrigo G..
ABSTRACT Studies aimed at producing stronger birds and with better growth performance are being developed involving artificial incubation. To that extent, thermal stimulation by the heat of 1.39 ºC and 1ºC above the standard, and by cold of 36 ºC fixed, were applied in the last week of the embryonic development (day 14 to day 18) to Cobb® strain birds of 33 to 53 weeks age. With the purpose of evaluating the behavior of the embryos facing these temperature stimuli to identify what is the best amplitude, frequency and the most appropriate period to perform temperature variation, obtaining more adapted birds to the field. It has been observed that heat or cold stimulation did not cause embryo mortality and did not affect the hatching and the quality of the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Hatchability; Incubation; Chick quality; Thermal variation.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162017000200236
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Effects of Ascorbic Acid Injection in Incubated Eggs Submitted to Heat Stress on Incubation Parameters and Chick Quality Rev. Bras. Ciênc. Avic.
Sgavioli,S; Matos Júnior,JB; Borges,LL; Praes,MFFM; Morita,VS; Zanirato,GL; Garcia,RG; Boleli,IC.
Dose-dependent positive effects on hatchability and hatchling weight have been attributed to ascorbic acid (AA) when eggs were submitted or not to intermittent heat stress during incubation. Fertile breeder (Cobb(r)) eggs were used to determine if the pre-incubation injection of AA in ovo affects the incubation and hatchling quality of egg incubated under thermoneutral or intermittent heat stress conditions. Eggs were not injected or injected with 0, 2,4, or 6% AA/100µL water and incubated at continuous thermoneutral (37.5ºC) or hot (39.0ºC) temperature. Eggshell temperature (EST) increased in the second half of the incubation period in all experimental groups. The EST of non-injected eggs and of those injected with water was higher when incubated at 39°C...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Conductance; Hatchability; Egg mass loss; Hatchling weight; Eggshell temperature.
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015000200181
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Effects of Hen Age and Egg Weight Class on the Hatchability of Free Range Indigenous Chicken Eggs Rev. Bras. Ciênc. Avic.
Abudabos,AM; Aljumaah,RS; Algawaan,AS; Al-Sornokh,H; Al-Atiyat,RM.
ABSTRACT In total, 806 eggs of free-range Hassawi indigenous chickens were collected from local farm in Saudi Arabia. Eggs were weekly collected for 11 weeks. Initial egg weight (IEW) was recorded, and eggs were graded into four classes (A: 35-40 g, B: 40-45 g, C: 45-50 g, and D: 50-55 g). Eggs were stored for seven days at 75-80% relative humidity and 14-16 C, after which egg weight losses (WL0) were calculated. During incubation, eggs were weighed on days 7 (W7) and 14 (W14), and egg weight losses on days 7 (WL7) and 14 (WL14), and total loss (WL0-14) were calculated. Hatchling weight (CW) was measured. The proportion of CW relative to egg weight loss (WL) on days0, 7 and 14 days of incubation (CW:WL0; CW:WL7 and CW:WL14, respectively), and break out...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Egg weight; Embryo mortality; Hassawi chicken; Hatchability; Hen age.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000100033
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Effects of In-Ovo Rutin Injection to Fertile Japanese Quail (Coturnix Coturnix Japonica) Egg on Hatchability, Embryonic Death, Hatchling Weight, and Hatchling Liver Oxidative and Nitrosative Stress Rev. Bras. Ciênc. Avic.
Genc,M; Kandemir,FM; Coban,O.
ABSTRACT This study was conducted with the aim of investigating the effects of the antioxidant rutin injected in fertilized quail eggs on incubation parameters and some hatchling liver biochemical parameters. The study was carried out with 6 groups including a control group and 5 different doses of rutin, and it involved 720 fresh Japanese quail (Coturnix coturnix japonica) eggs. It was observed that rutin dose did not affect the early embryo mortality, whereas intermediate and late embryo mortality rates were higher in all groups given rutin in comparison to the control group. The mean hatchability of fertile eggs and total eggs for the control, 0.25 mg, 0.50 mg, 0.75 mg, 1 mg and 1.5 mg groups were calculated as 82.06, 82.23, 64.43, 68.84, 44.08, 22.95 %...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Hatchability; In-ovo injection; Oxidative stress; Nitrosative stress; Rutin.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000100329
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Effects of Protein in Diet and Sex Ratio on Egg Production, Egg and Hatching Chick Weight, Fertility, Hatchability and Embryonal Mortality in Pheasants (Phasianus Colchicus) Rev. Bras. Ciênc. Avic.
Uğurlu,M; Akdağ,F; Teke,B; Salman,M.
ABSTRACT This study was performed to investigate the effects of crude protein (CP) in diet and sex ratio on egg production, egg and hatching chick weight and hatchability traits in pheasants (Phasianus Colchicus). In this study, the treatment groups were constructed as 15% CP-5:1; 15% CP-7:1; 18% CP-5:1; 18% CP-7:1 for CP and sex (male:female) ratio respectively. The eggs were obtained from 48 weeks old pheasant. In this study, it was determined that there was positive effective on egg production, egg and hatching weight and hatchability of fertile eggs (HFE) for 18% CP. In contrast, fertility (FR) (p<0.05) and hatchability rate of total eggs (HR) (p>0.05), EPEM (p>0.05) and MPEM (p>0.05) tended to decrease with increasing CP. It was found that...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Embryonal mortality; Hatchability; Pheasant; Protein levels; Sex ratio..
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000200231
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Efficacy of insecticides in controlling the corn borer, Ostrinia furnacalis (Guenee) and their effects on natural enemies Thai Agricultural
Watchara Choonhawong; Auranuj Kongkanjana; Boonsom Meksongsee.
2 tables
Palavras-chave: Corn; Maize; Borers; Insecticides; Ostrinia furnacalis; Natural enemies; Sweet corn; Triflumuron; Carbofuran; Kumiphor; Teflubenzuron; Chlorfluazuron; Cypermethrin; Trichogramma; Hatchability; ข้าวโพด; หนอนเจาะลำต้น; สารฆ่าแมลง; แมลงศัตรูธรรมชาติ.
Ano: 1985 URL: http://anchan.lib.ku.ac.th/agnet/handle/001/4573
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Egg hatchability prediction by multiple linear regression and artificial neural networks Rev. Bras. Ciênc. Avic.
Bolzan,AC; Machado,RAF; Piaia,JCZ.
An artificial neural network (ANN) was compared with a multiple linear regression statistical method to predict hatchability in an artificial incubation process. A feedforward neural network architecture was applied. Network trainings were made by the backpropagation algorithm based on data obtained from industrial incubations. The ANN model was chosen as it produced data that fit better the experimental data as compared to the multiple linear regression model, which used coefficients determined by minimum square method. The proposed simulation results of these approaches indicate that this ANN can be used for incubation performance prediction.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Artificial incubation; Artificial neural networks; Hatchability; Multiple linear regression.
Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2008000200004
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Estimating the impact of environmental conditions on hatching results using multivariable analysis Rev. Bras. Ciênc. Avic.
Nääs,IA; Gigli,ACS; Baracho,MS; Almeida Paz,ICL; Salgado,DD.
Hatching results are directly related to environmental and biological surroundings. This research study aimed at evaluating the influence of incubation environmental conditions on hatchability and one-day-old chickling quality of five production flocks using multivariable analysis tool. The experiment was carried out in a commercial hatchery located in the state of São Paulo, Brazil. Environmental variables such as dry bulb temperature, relative humidity, carbon dioxide concentration, and number of colony forming units of fungi were recorded inside a broiler multi-stage setter, a hatcher after eggs transference, and a chick-processing room. The homogeneity of parameter distribution among quadrants inside the setter, the hatcher, and the chick room was...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Broiler chick; Chick quality; Hatchability; Hatchery; Incubation conditions.
Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2008000400004
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Evaluation of the Chloride Requirement of the Broiler Breeder Hen Rev. Bras. Ciênc. Avic.
Harl,JC; Harms,RH; Wilson,HR; Russel,GB.
Two experiments wore conducted to evaluate the chloride requirement of the broiler breeder hen. Experiments were conducted for a twelve-week period and seven experimental diets wore fed. The diets contained the following dietary chloride levels: 0. 040, 0. 047, 0. 054, 0.060, 0.073, 0.09g, and 0. 174%. Sodiam bicarbonate was used to maintain a constant level of sodium. Levels of dietary chloride below 0.054% reduced EF; EW, &amp; EC (ED X (EW-shell wt). Also, the highest level of dietary chloride reduced all characteristics. Dietary chloride did not have a significant effect on body weight gain or fertility and hatchability of eggs. The Nationa/ Research Council (1994) suggests that the broller breeder hen have daily chloride intake of 185 milligrams...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Broiler breeder; Chloride; Egg production; Egg weight; Hatchability.
Ano: 2000 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2000000300007
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Hatching distribution of eggs varying in weight and breeder age Rev. Bras. Ciênc. Avic.
Vieira,SL; Almeida,JG; Lima,AR; Conde,ORA; Olmos,AR.
Broiler chicks from one incubator hatch within long periods of time, which leads to dehydration and reduction in yolk sac reserves of those chicks that have hatched earlier and potentially impairs early performance. The present research investigated the hatching distribution at intervals of incubation using eggs of different weights within one breeder age or eggs from widely different breeder ages. Eggs from breeders at 27 and 59 weeks of age (54 and 69 g) and from breeders at 40 weeks of age, which were graded as light (58 g) and heavy (73 g), were placed in a commercial incubator. There were a total of 1,184 eggs distributed in four treatments and eight replicates: eggs from 27-week-old breeders (27B), eggs from 59-week-old breeders (59B), light eggs...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Breeder age; Egg weight; Hatchability.
Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2005000200002
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HER-2 gene expression in atypical ductal hyperplasia associated with canine mammary carcinomas Arq. Bras. Med. Vet. Zootec.
Ferreira,E.; Bertagnolli,A.C.; Gobbi,H.; Cassali,G.D..
O presente estudo apresenta o comportamento do gene HER2, a partir do uso da técnica de hibridização cromogênica in situ, em hiperplasias ductais atípicas associadas a carcinomas mamários caninos positivos para HER2. Aparentemente, uma fraca expressão da proteína HER2 foi observada nas hiperplasias ductais atípicas, bem como uma ausência de amplificação do seu gene codificador nessas hiperplasias e nos carcinomas mamários associados. O comportamento da proteína HER2 e do seu gene em carcinomas mamários caninos é similar ao observado em alguns subtipos histológicos de tumores mamários humanos, e a ausência dessas alterações sugerem que esse gene poderia aparentemente não estar envolvido com os estágios iniciais de proliferação celular atípica.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Birds; Embryonic development; Hatchability; Prestorage.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352014000200039
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Influence of eggshell colour on egg yolk antibody level, incubation results, and growth in broiler breeders R. Bras. Zootec.
Baylan,Mikail; Celik,Ladine Baykal; Akpinar,Gulsen Copur; Alasahan,Sema; Kucukgul,Altug; Dogan,Sibel Canogullari.
ABSTRACT This study was performed to determine the effect of shell colour in eggs acquired from Ross-308 broiler breeders on the interior and exterior quality of the egg, the antibody content of the egg yolk, and growth performance. The shell colours of a total of 1350 eggs were classified, using a colorimeter, into three groups: dark (E<64), medium (E:64.00-67.00), and light (E>67). The difference between groups with respect to egg weight, shape index, shell weight, and Haugh unit value was significant. Egg yolk antibody content (IgY) was 6.658 mg/mL in the dark colour group, 5.130 mg/mL in the medium colour group, and 5.242 mg/mL in the light colour group. Among incubation characteristics, the fertility rate as, in order, 94.66%, 92.14%, and 87.92%...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Embryonic mortality; Hatchability; Growth performance.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982017000200105
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