Caracterización de mortalidad embrionaria en pollos de engorde

S, Adriana Peñuela; Hernández, Aureliano

doi:10.21897/rmvz.1245

Cited by 3 publications

(4 citation statements)

References 21 publications

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“…There are numerous causes of embryo mortality, such as insufficient time of egg storage, incorrect incubation temperatures, inadequate humidity or ventilation, mechanical impact during transport, contamination, or nutritional deficiencies. Early embryonic mortality on average was 6.75%; this was slightly lower than that observed by [ 31 ], but greater than the guidelines at 3.5% [ 23 ]. In our study, there was a significant reduction in late embryonic mortality as well as pips in the egg shell with an increasing phytase supplementation in breeder diets.…”

Section: Discussioncontrasting

confidence: 54%

“…The increased early embryonic mortality in the diets with increased doses of phytase in the breeder diet was not expected. Nonetheless, the increase in early deaths combined with the decrease in late deaths could indicate an increase in carbohydrate metabolism during the embryonic growth cycle of the chick, which could result in toxic byproducts such as CO 2 or lactic acid very early in the embryonic stage before the establishment of adequate respiratory surfaces, as stated by [ 31 ].…”

Section: Discussionmentioning

confidence: 99%

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Influence of Dietary Phytase Inclusion Rates on Yolk Inositol Concentration, Hatchability, Chick Quality, and Early Growth Performance

Granghelli

Walk²,

Gomes

et al. 2023

Animals

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The aim of this study was to determine the influence of dietary phytase in breeder hens on yolk nutrients, hatchability, chick quality, and growth rate of their progeny, and their subsequent performance to 42 d post-hatch when fed diets with the same phytase concentrations. Breeder hens (n = 216) were divided into 3 groups receiving nutrient-adequate diets with reduced calcium (Ca) and phosphorus (P) (by 0.16% and 0.15%, respectively), supplemented with either 500, 1500, or 4500 FTU/kg phytase from 27 to 50 weeks of age. Eggs were collected at 38 weeks of age and incubated. On the day of hatch, the chick quality and hatchability were determined, and 18 chicks/group were euthanized for yolk sac collection and the determination of inositol and glycerol concentrations. The remaining chicks were divided into three groups, receiving different diets with reduced Ca and P (by 0.16% and 0.15%, respectively), supplemented with 0, 500, or 1500 FTU/kg phytase to 42 d post-hatch. Increasing the phytase concentration in the breeder hen diet linearly (p < 0.05) increased the number of early embryo deaths and decreased the number of late deaths and pips. The inositol concentration in the yolk sac at day of hatch increased (quadratic; p < 0.05) as the phytase dose increased in the breeder hen diet. The breeder hen diet (p < 0.05) influenced the body weight (BW), feed intake (FI), and feed conversion ratio (FCR) up to 21 days of age. The supplementation of breeder hen diets with 1500 FTU/kg phytase increased the concentration of sodium (Na), magnesium (Mg), potassium (K), manganese (Mn), and zinc (Zn) in the yolk sac. The inclusion of phytase doses up to 4500 FTU/kg appeared to influence embryo mortality, chick feed intake, and BW gain to 21 days and the FCR throughout the entire production phase.

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Section: Discussioncontrasting

confidence: 54%

Section: Discussionmentioning

confidence: 99%

Influence of Dietary Phytase Inclusion Rates on Yolk Inositol Concentration, Hatchability, Chick Quality, and Early Growth Performance

Granghelli

Walk²,

Gomes

et al. 2023

Animals

View full text Add to dashboard Cite

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“…Heavier eggs are produced by older breeder flocks containing lower yolk percent and chick weight at hatch (Ulmer‐Franco et al, 2010). Most of the embryonic mortality takes place during the late incubation phase (Peñuela & Hernandez, 2018). The reason behind this could be related to the limited availability of nutrients.…”

Section: Discussionmentioning

confidence: 99%

“…Due to this advancement, the importance of embryonic life is continuously increasing. The chicken egg is a closed system and due to nutritional constrain, almost 5% of the embryos do not survive the last week of the incubation period (Peñuela & Hernandez, 2018). Newly hatched chicks can be without feed and water for up to 72 hours due to variations in hatching and shipping time (Willemsen et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

In ovo feeding of vitamins in broilers: A comprehensive meta‐analysis of hatchability and growth performance

Ncho,

Bakhsh,

Goel

2023

Animal Physiology Nutrition

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In ovo feeding has been introduced as a cost‐effective method to improve hatchability and broiler performance. Specifically, several studies have focused on the impact of vitamins. However, due to variations in experimental conditions across all trials, drawing general conclusions appears challenging. Therefore, we conducted a meta‐analysis of 17 published papers, including a maximum of 134 sample size to evaluate the potential effects of in ovo feeding of vitamins in broilers. Studies were retrieved by consulting scientific repositories such as Pubmed, Scopus, Scielo, Web of Science, and Google Scholar. A binary logistic model was used to determine the parameters influencing hatchability. To assess variations in hatchling weight and growth parameters based on the vitamin category, a mixed model analysis of variance was performed, considering the study as a random effect and the vitamin category as a fixed effect. Finally, a linear mixed model was used to develop equations that explain the evolution of growth parameters based on vitamin concentration, volume, and day of injection. The results revealed that for better hatchability, it is preferable to consider heavier eggs (p = 0.007), lower volumes (p = 0.039), and late injection (p = 0.022). Vitamin E was associated with higher hatchling weight (p = 0.037), while vitamin C exhibited the lowest overall feed conversion ratio (p = 0.042). Interactions were observed between the day of injection and vitamin concentration or volume of injection for all studied growth parameters. In summary, the findings of this study suggest that hatchability during in ovo feeding is influenced by technique‐related parameters, whereas growth parameters can be modulated by the category of vitamin injected. Consequently, this study lays the groundwork for future investigations assessing the effects of in ovo feeding in broilers, as it highlights the relationship between the methodology and potential outcomes.

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Incubation characteristics and their relation to the age of the parent flock for broiler production

Genchev,

Lukanov,

Petrov

2024

Mediterranean Agricultural Sciences

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The aim of this study was to examine the incubation characteristics of hatching eggs from one of the widely distributed hybrid combinations of classic broilers globally and to trace the dynamics of their changes depending on the age of the parental flock. The study covered a 12-year period - between 2011 to 2023. The share of quality chicks hatched ranged from 76.8% to 91.6%, with average values of 84.1-84.3%, while the share of culled chickens was within the normal range (0.4 to 1.7%). The proportion of culled eggs during candling on the 7th day varied between 4.3% and 14.7%, with average values of 7.64-8.24%. With the increase in the age of the parental flock, there was a stable tendency to increase the share of culled eggs at the first test egg cull, particularly due to the increase of the share of infertile eggs. The age of the parental flock determined more than 38% of the manifestation of the egg fertility trait and about 45% of that of quality chicks. Its influence on total embryonic mortality was significantly weaker (R2= 0.1456). The study of the relationship between the traits “share of quality chicks” and “share of infertile eggs” showed that in the examined dataset, the correlation between them was moderate, negative (r= -0.472±0.100 at P

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Caracterización de mortalidad embrionaria en pollos de engorde

Cited by 3 publications

References 21 publications

Influence of Dietary Phytase Inclusion Rates on Yolk Inositol Concentration, Hatchability, Chick Quality, and Early Growth Performance

Influence of Dietary Phytase Inclusion Rates on Yolk Inositol Concentration, Hatchability, Chick Quality, and Early Growth Performance

In ovo feeding of vitamins in broilers: A comprehensive meta‐analysis of hatchability and growth performance

Incubation characteristics and their relation to the age of the parent flock for broiler production

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