Effect of Age on the Immune and Visceral Organ Weights and Cecal Traits in Modern Broilers
| Autor: | Yordan Martínez, Edison Altamirano, Patricio E. Paz, M. Valdivié, Victoria Ortega |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
040301 veterinary sciences
animal diseases cecal pH Physiology Spleen Biology broiler digestive system Article 0403 veterinary science chemistry.chemical_compound Cecum digestive organ Immune system cecal lactic acid bacteria lcsh:Zoology medicine lcsh:QL1-991 Gizzard lcsh:Veterinary medicine General Veterinary 0402 animal and dairy science Broiler Proventriculus 04 agricultural and veterinary sciences 040201 dairy & animal science Small intestine Lactic acid medicine.anatomical_structure chemistry age lcsh:SF600-1100 Animal Science and Zoology |
| Zdroj: | Animals Volume 11 Issue 3 Animals : an Open Access Journal from MDPI Animals, Vol 11, Iss 845, p 845 (2021) |
| ISSN: | 2076-2615 |
| DOI: | 10.3390/ani11030845 |
| Popis: | Simple Summary Currently, due to the high developments achieved in the poultry industry especially in genetics, management, nutrition, health, and animal welfare, modern broilers reach slaughter weight at an earlier age, which in turn has brought about notable changes in the morphophysiology of these birds. The following research proposes to determine the effect of age on visceral and immune organ weight, cecal pH, and cecal lactic acid bacteria in Ross 308® broilers, up to 10 days old. It was concluded that the immune and visceral organs increase their absolute and relative weight according to age and on days 9 and 10 the highest growth rate of the organs was found, furthermore, the colonization of the cecal lactic acid bacteria is established before 10 days of life (as the most critical stage), although with variable changes for intestinal pH. The correlation showed, in addition, a significant association between the organs evaluated, as well as for the cecum relative weight and the cecal lactic bacteria count. These results could contribute to updating knowledge on immunological activity, cecal microbiology, and the functioning of the digestive system, as well as for the development of new nutritional requirements and the optimization of dietary formulations. Abstract This study aimed to determine the effect of age on the immune and visceral organ weights and cecal traits in modern broilers. 200 male Ross® 308 broilers were randomly selected, then 20 broilers were slaughtered every day (up to 10 days old) after six hours of fasting. All the organs measured had a progressive increase in absolute weight as the days progressed, apart from the spleen, which decreased its absolute weight on day 5, even though on day 10 it showed the highest values. Moreover, the small intestine relative weight increased from the fourth to the ninth day and was correlated (p ≤ 0.05) with the relative weight of the proventriculus, gizzard, small intestine, and cecum, although without statistical association with the of the heart. There was a correlation between the cecum relative weight and the cecal lactic acid bacteria, and between the primary lymphoid organs. The pH (from 5.74 to 7.40) and cecal lactic acid bacteria (from 6.11 to 8.79 log 10 CFU/g) changed according to the age of the broilers. The results could contribute to the understanding of the physiology and intestinal microbiology of the first 10 days old of modern broilers, which is crucial to improve the genetic expression of these animals. |
| Databáze: | OpenAIRE |
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