Eimeria Necatrix Infections and Oleic Acid Absorption in Broilers

Turk, D. E.; Stephens, J. F.

doi:10.3382/ps.0460775

Cited by 18 publications

(3 citation statements)

References 1 publication

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“…This observation is in agreement with results of our previous experiments in- volving E. necatrix (Turk and Stephens, 1967b). However, in the second trial involving E. necatrix infections (Table 4), oleic acid absorption was depressed for a longer period of time (days 6-10) than was zinc absorption.…”

Section: Resultssupporting

confidence: 93%

Effects of Serial Inoculations with Eimeria acervulina or Eimeria necatrix upon Zinc and Oleic Acid Absorption in Chicks ,

Turk

Stephens

1970

Poultry Science

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Section: Resultssupporting

confidence: 93%

Effects of Serial Inoculations with Eimeria acervulina or Eimeria necatrix upon Zinc and Oleic Acid Absorption in Chicks ,

Turk

Stephens

1970

Poultry Science

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“…However, Fetterer et al (2014) showed that the effects of Eimeria (in this case E. maxima) on nutrient transporters could be significant beyond the intestinal region where they mostly colonize (jejunum). The damage caused by these protozoans have been reported to decrease the absorption of iodine, zinc (Turk and Stephens 1966, 1967a, 1967b, and methionine (Ruff 1974), as well as decrease the expression on nutrient transporters and digestive enzymes such as downregulation of aminopeptidase N and sucrase-isomaltase and several AA transporters (Fetterer et al 2014).…”

Section: Gain/bird (G)mentioning

confidence: 99%

The response in jejunal and ileal nutrient and energy digestibility and the expression of markers of intestinal inflammation in broiler chickens to coccidial vaccine challenge and phytase supplementation

Adedokun¹,

Adeola²

2016

Can. J. Anim. Sci.

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The objective of this study was to determine the effect of phytase supplementation and coccidial vaccine challenge (CVC) on jejunal and ileal nutrient and energy digestibility and the expression of genes of some markers of inflammation and nutrient transporters in broilers. Ross 708 broilers (384 males) were randomly assigned to six treatments in a factorial arrangement with two levels of CVC (0× or 25×) and three levels of phytase [0, 1000, or 5000 phytase units (FTU) kg −1 diet] with eight birds per pen and eight replicates per treatment. On day 42 post hatching, 192 birds received no challenge (NCH) or challenged (CHA) with 25× coccidial vaccine. Birds received the experimental diets from day 49 post hatching until day 55. Jejunal dry matter and energy digestibility decreased (P < 0.05) with CVC, but phytase supplementation increased (P < 0.05) nitrogen (49.1%-55.2%) and phosphorus (18.0%-58.3%) digestibility. Ileal nitrogen and P digestibility increased (P < 0.05) with phytase supplementation. In the jejunum, CVC (P = 0.053) and phytase (P = 0.063) showed a tendency to decrease the expression of active sodium-dependent phosphate transporter. The results from this study show that the interaction between CVC and phytase resulted in higher feed efficiency (at the level of 5000 FTU), lower jejunal dry matter digestibility (DMD), and digestible energy (at the level of 1000 FTU). Also, older broilers, especially those with gastrointestinal tract inflammation (CHA), may benefit more from phytase super dosing compared with the NCH birds.

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“…Davies (201), Erasmus et al (254), and Singh and Donovan (723) had also shown reduced absorption of vitamin A on the basis of lowered liver vitamin A content in the presence of coccidiosis. Turk and Stephens (819)(820)(821)(822)(823) concluded from a series of experimental infections that the absorption of zinc and oleic acid could be impaired in broilers, depending on the species of Eimeria used. Chickens infected with E. acervulina exhibit reduced plasma levels of protein, carotene, and vitamin A, as shown by Kouwenhoven and van der Horst (470).…”

Section: B Diseasesmentioning

confidence: 99%