The effects of Post-Hatch Feeding with Betaine on the Intestinal Development of Broiler Chickens

Norouzian, Hassan; Alirezaei, Masoud; Dezfoulian, Omid; Taati, Majid

doi:10.1590/1806-9061-2017-0468

Cited by 6 publications

(7 citation statements)

References 33 publications

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“…The gut of the newly hatched chick is in a process of development and maturation during the first few weeks of life. The development of gut in broiler chicks can, thus, be affected by the blends of BCAAs having different valine contents during this period, as reported by Norouzian et al [ 2 ]. Our results on the development of whole gut may be explained by the fact that the efficiency of dietary protein utilization in poultry depends partly on the features of the gut [ 9 ].…”

Section: Discussionmentioning

confidence: 79%

Section: A C C E P T E Dmentioning

confidence: 74%

“…Indeed, the final growth rates of broilers are directly proportional to the early growth rate of its skeletal muscles and especially gut [2]. Therefore, there is a trend towards the reduction of crude protein content (PC) in broiler diets [1,3,4].…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, one of the greatest challenges to the efficient production of broilers is lack of AAs resulting in a delay in the development of gastrointestinal tract (gut) and proliferation of muscle cells associated with early protein supply [ 1 ]. Indeed, the final growth rates of broilers are directly proportional to the early growth rate of its skeletal muscles and especially gut [ 2 ]. Therefore, there is a trend towards the reduction of CP content (PC) in broiler diets [ 1 , 3 , 4 ].…”

Section: Introductionmentioning

confidence: 99%

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Response of broilers to supplementation of branched-chain amino acids blends with different valine contents in the starter period under summer conditions

et al. 2021

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Objective: The objectives of this study were to compare the effects of normal and low protein content (PC) of starter diet supplemented or not with blends of branched-chain amino acids (BCAAs) on growth performance of broilers under summer conditions and to investigate whether these effects altered some quality traits and the characteristics of gastrointestinal tract. Methods: A total of 768 mixed-sex broiler chicks (Ross 308, one-d-old) with an average initial body weight (BW) of 47.6±1.03 g were allocated into six treatments with four replications in 2 × 3 factorial arrangement. Factors were: PC-normal (N, 22% to d 15) and low (L, 20% to d 15

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Section: Discussionmentioning

confidence: 79%

Section: A C C E P T E Dmentioning

confidence: 74%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Response of broilers to supplementation of branched-chain amino acids blends with different valine contents in the starter period under summer conditions

et al. 2021

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“…It decreases crypt proliferation, limits the number of enterocytes available and the villus growth. Therefore, the villus increases are linked to a higher digestive activity and intestinal absorption, resulting from an increase in the area of absorption, enzymatic secretion in the membrane brush border, nutrient transport system, and consequently potentiation of the productive performance of the bird (Norouzian, Alirezaei, Dezfoulian & Taati, 2018).…”

Section: Resultsmentioning

confidence: 99%

Digestible methionine levels for white-egg layer pullets from 7 to 12 weeks of age

Júnior

Guerra

Santana

et al. 2020

Acta Sci. Anim. Sci.

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An experiment was carried out to evaluate the requirement of digestible methionine for growing pullets at growth phase (7 to 12 weeks of age). A completely randomized design was distributed in five treatments, six replicates, and 15 pullets per experimental unit. 450 Dekalb White pullets from the 7th weeks of age, with an average initial weight of 313.14 ± 12.49 g were used. Dietary treatments consisted in five diets supplemented with DL-Methionine which resulted in five levels of digestible methionine (0.266, 0.294, 0.322, 0.350, and 0.378 %). Performance, serological blood, histopathology and histomorphometry data were evaluated. Quadratic responses were observed for final live weight (p < 0.0143), weight gain (p < 0.0073), feed conversion ratio (p < 0.0058), glycogen deposition in the liver (p < 0.0001), gamma-glutamyl transferase enzyme activity (p < 0.0008), and villus height (p < 0.0024) with digestible dMet levels. In conclusion, the use of 0.343 % dMet, corresponding to a dMet:dLys ratio 55, is recommended for white-egg pullets from 7 to 12 weeks of age.

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Effects of betaine on growth performance and intestinal health of rabbits fed different digestible energy diets

Li,

Pu,

Zeng

et al. 2024

Journal of Animal Science

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An experiment was conducted to determine effects of betaine on growth performance and intestinal health in rabbits fed diets with different levels of digestible energy. During a 36-day experiment, a total of 144 healthy 35-day-old weaned New Zealand white rabbits with a similar initial body weight (771.05 ± 41.79 g) were randomly distributed to a 2 × 3 factorial arrangement. Experimental treatments consisted of two levels of digestible energy (normal: 10.20, and low: 9.60 MJ/kg) and three levels of betaine (0, 500, and 1000 mg/kg). Results indicated that rabbits fed the diet with low digestible energy (LDE) had reduced body gain/feed intake (G:F) on days 1-14 and 1-36 (P < 0.05), increased the apparent total tract digestibility (ATTD) of neutral detergent fiber (NDF), acid detergent fiber (ADF) and n-free extract, and decreased the ATTD of gross energy (GE), crude fiber (CF) and organic matter (P < 0.05). The LDE diet up-regulated the gene abundance levels of duodenum junctional adhesion molecule-3 (JAM-3), and down-regulated the ileum toll-like receptor 4 (TLR4), myeloid differentiation factor 88 (MyD88), and interleukin-6 (IL-6) (P < 0.05). Activities of amylase, lipase, trypsin, and the immunoglobulin M content in the jejunum were decreased in LDE treatment group (P < 0.05). Dietary betaine supplementation increased the ATTD of GE, dry matter (DM), ADF and n-free extract by LDE (P < 0.05). The villus height, crypt depth and goblet cell numbers were decreased, and the villus crypt ratio was increased in the duodenum (P < 0.05). The gene abundance levels of duodenum interleukin-2 (IL-2) were down-regulated, and the duodenum junctional adhesion molecule-2 (JAM-2) and junctional adhesion molecule-3 (JAM-3) were up-regulated (P < 0.05). Furthermore, addition of betaine to the LDE diet increased the ATTD of GE, DM and organic matter in rabbits (P < 0.05). Gene abundance level of ileum IL-6 and duodenum JAM-3 were up-regulated (P < 0.05). In summary, LDE diets can reduce the activity of intestinal digestive enzymes and decrease the ATTD of nutrients. However, the addition of betaine to LDE diets improved the intestinal barrier structure and nutrient ATTD in rabbits, with better results when betaine was added at an additive level of 500 mg/kg.

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The effects of Post-Hatch Feeding with Betaine on the Intestinal Development of Broiler Chickens

Cited by 6 publications

References 33 publications

Response of broilers to supplementation of branched-chain amino acids blends with different valine contents in the starter period under summer conditions

Response of broilers to supplementation of branched-chain amino acids blends with different valine contents in the starter period under summer conditions

Digestible methionine levels for white-egg layer pullets from 7 to 12 weeks of age

Effects of betaine on growth performance and intestinal health of rabbits fed different digestible energy diets

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