The Effect of Different Zinc Sources on Biochemical Parameters, Intestinal Morphology, Carcass Characteristics and Performance in Finishing Lambs

Esfiokhi, S H Mousavi; Norouzian, M. A.; Najafi, Ali

doi:10.1007/s12011-023-03675-3

Cited by 1 publication

(1 citation statement)

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“…Supplementary zinc has been reported to improve intestinal permeability and upregulate expression of tight junction proteins in the intestines [ 9 , 10 ]. Finishing lambs supplemented with differing zinc sources showed improvements in final body weight, average daily gain, feed conversion, dry matter digestibility, and jejunal villus width compared to non-supplemented lambs [ 11 ]. Additionally, Esfiokhi et al [ 11 ] reported that lambs supplemented with organic zinc sources had improved duodenal villus width and ileal villus height compared to non-supplemented lambs.…”

Section: Introductionmentioning

confidence: 99%

Encapsulated Butyric Acid and Zinc as a Feed Additive for Lambs Abruptly Transitioned to a Grain-Based Diet

Francis,

Ribeiro,

LaFleur

et al. 2024

Biology

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Butyric acid is attributed to gastrointestinal epithelial development and health and two studies were conducted to determine if supplementing encapsulated butyric acid and zinc (BZ) in lambs abruptly transitioned to a finishing diet has effects on growth performance, efficiency of dietary net energy utilization, rumen morphometrics, small intestinal histology, and carcass traits. Polypay wethers (n = 84; initial shrunk body weight = 38.8 kg ± 4.8 kg) were used in a randomized complete block design study. Wethers were abruptly transitioned from a high roughage-based diet to a 100% concentrate-based diet and dietary treatments were 0 or 2 g BZ/kg of diet dry matter. Study 1 evaluated growth performance and carcass traits of lambs over a 59.5 d feeding period, and Study 2 evaluated changes in rumen morphometrics and small intestine histology in serial harvested lambs. Wethers supplemented with BZ had increased body wall thickness, decreased calculated boneless closely trimmed retail cuts, and decreased red meat yield (p ≤ 0.03) compared to non-supplemented wethers. Linear effects (p ≤ 0.01) for harvest date were observed for most rumen and small intestine measurements. Supplementing wethers with BZ did not improve growth performance, carcass traits, or rumen and small intestine measurements. The effects of BZ supplementation on fat deposition in ruminants should be further investigated.

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