Effect of in ovo feeding egg white protein, β-hydroxy-β-methylbutyrate, and carbohydrates on glycogen status and neonatal growth of turkeys
By O. T. Foye, Z. Uni, P. Ferket. 2006
176 citations recorded by the source corpus.
In ovo feeding (IOF), injecting dietary components into the amnion about 1 d prior to internal pipping, may enhance growth by altering glycogen status. This hypothesis was evaluated with 5 IOF solutions containing protein, beta-hydroxy-beta-methylbutyrate (HMB), and carbohydrate. Four IOF treatments were arranged as a factorial of 2 levels of egg white protein (EWP; 0 and 18%) and 2 levels of HMB (0 and 0.1%). An IOF solution of carbohydrates (S; 20% dextrin and 3% maltose) was evaluated for contrast purposes. At 23 d of incubation, 1.5 mL of IOF solution was injected into the amnion of 100 eggs per treatment. At hatch, feed and water were provided ad libitum. At hatch and 3 and 7 d of age, BW were determined, and 10 poults per treatment were sampled to determine liver (LG) and pectoralis muscle (PC) glycogen content. Poults on IOF treatments A (18% EWP), B (18% EWP + HMB), and D (HMB) weighed 6.0, 2.7, and 3.3% more than the controls at hatch, respectively (P < 0.05) with an EWP x HMB interaction (P < 0.05) sustained to 3 and 7 d only in treatment D (P < 0.005). At hatch, A and D poults had greater percentages of PC (P < 0.05) than controls, and the percentage of PC in treatment D was sustained until 7 d. Total LG was enhanced by A and B at 7 d (P < 0.05) over the controls, whereas total PC glycogen was enhanced at 7 d by IOF treatment D (P < 0.05). The IOF A and S poults had greater BW than the controls at hatch only (P < 0.05). The IOF treatment A had greater LG at hatch (P < 0.05), but by 7 d, A and S had greater LG than controls (P < 0.05). Poults fed S in ovo had enhanced total PC glycogen over controls, whereas poults on treatment A had less total PC glycogen than controls (P < 0.05). The results of this experiment demonstrate that IOF of A or S poults may enhance hatch BW and glycogen status of poults during the neonatal period by inclusion of HMB.
Subfields: Animal Science and Zoology, Genetics, Reproductive Medicine
View Paper: https://www.semanticscholar.org/paper/c43f88393d261a351bd98af4deb366e8d8d7aa2b
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- Z. Uni
- J. D. De Oliveira
- R. Molenaar
- I. Reijrink
- R. Meijerhof
- H. V. D. Brand
- P. Ferket
Citations in the corpus
- Meeting embryonic requirements of broilers throughout incubation: a review (2010, background): “Hatchling weight can increase by 5 to 6% due to in ovo feeding (Uni et al., 2005; Foye et al., 2006).”
- Important metabolic pathways in poultry embryos prior to hatch (2008, background): “Even though the pectoral muscle contains less glycogen per unit of mass than the liver, it accounts for the greatest quantity of total glycogen stored in the body (John et al., 1988; Christensen et al., 2001; Uni et al., 2005; Foye et al., 2006).”