Effects of putrescine injection in broiler breeder eggs

Effects of putrescine injection in broiler breeder eggs

The aim of this study was to evaluate the effects of increasing doses of putrescine injected in ovo on hatchability, intestinal morphology and pre‐starter performance of broilers. For this purpose, 720 eggs from broiler breeders were separated into a negative control (no injection) and injection tre...

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Bibliographic Details
Published in:Journal of animal physiology and animal nutrition Vol. 105; no. 2; pp. 294 - 304
Main Authors: Goes, Emanuele Cristiny, Cardoso Dal Pont, Gabriela, Oliveira, Priscila Raijche, Rocha, Chayane, Maiorka, Alex
Format: Journal Article
Language:English
Published: Germany Wiley Subscription Services, Inc 01-03-2021
Subjects:
Animals
biogenic amine
Birds
Breast
Chickens
Eggs
embryo nutrition
Embryos
Goblet cells
Hatchability
in ovo feeding
Incubation
Injection
intestinal development
Intestine
Intestines
Liver
Morphology
Ovum
Polynomials
Putrescine
Putrescine - pharmacology
Regression analysis
Regression models
Statistical analysis
Variance analysis
Villus
Yolk
in ovo feeding
intestinal development
embryo nutrition
biogenic amine
putrescine
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Summary:The aim of this study was to evaluate the effects of increasing doses of putrescine injected in ovo on hatchability, intestinal morphology and pre‐starter performance of broilers. For this purpose, 720 eggs from broiler breeders were separated into a negative control (no injection) and injection treatments with increasing doses of putrescine (0.05; 0.1; 0.15 and 0.2%), totalling five treatments of 144 eggs each. Eggs were distributed in a completely randomized design inside the setter and the injection of solutions occurred at 17 days of incubation. After hatch, 330 birds were housed in mixed lots following the original treatments, totalling 5 treatments of 6 replicates with 11 birds each. Six birds per treatment were weighed and euthanized by cervical dislocation to collect the liver, intestine and breast 24 hr after injection, at hatch and 24 hr after hatch. At 2 days of age, intestines were collected from 4 animals per treatment to analyse histomorphology. The effects of putrescine levels were evaluated by polynomial regression models, ANOVA and Tukey test at 5% probability. The hatchability decreased linearly in response to increased doses of putrescine. The percentage of residual yolk was lower in animals that received putrescine compared to the control. After injection, the percentage of breast increased linearly, and the percentage of intestine had a quadratic response to increased doses of putrescine. However, 24 hr after hatch, the percentage of intestine linearly decreased, and the percentage of liver linearly increased in response to increased doses of putrescine. Villus height increased quadratically, crypt depth decreased linearly, and goblet cells increased linearly in response to the putrescine dose. FI and BWG were not affected in the pre‐starter phase; however, FCR increased in response to increased levels of putrescine. Due to putrescine effects on embryos, it is recommended that the doses injected in ovo not exceed 0.1%.
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content type line 23
ISSN:0931-2439
1439-0396
DOI:10.1111/jpn.13446