Glutamic Acid Improves Body Weight Gain and Intestinal Morphology of Broiler Chickens Submitted to Heat Stress

Porto, Maria Luiza; Givisiez, Patrícia Emília Naves; Saraiva, E. P.; Costa, Fernando Guilherme Perazzo; Filho, Alb Moreira; Andrade, Mfs; Brandão, Patrícia Araújo; Guerra, Ricardo Romão

doi:10.1590/1516-635x1703355-362

Cited by 21 publications

(13 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The MCV was significantly higher in the last sampling periods (75 and 100 days; 3,101 and 2,411 µm 3 , respectively) compared to 25 and 50 days, which were statistically similar among each other. The present study does not agree with Porto et al (2015), who observed that chronic heat stress does not interfere with the production of serum anti-Newcastle antibody titers in pre-starter and starter chicks. But corroborates with the findings of Souza et al (2010) in a study with stress-induced laying hens.…”

Section: Discussioncontrasting

confidence: 99%

Productive performance, thermal and blood parameters of Japanese laying quails at different cage stocking densities

Bourdon

Souza

Oliveira

et al. 2021

RSD

View full text Add to dashboard Cite

This study aimed to evaluate the effects of different stocking densities on the performance, eggshell quality, surface body temperature and hematological parameters of Japanese laying quails based on physiological indicators of animal welfare. Two hundred and thirty seven-week-old Japanese quails were used in this experiment. The quails were completely randomized to four stocking densities: 112.2 (T1), 102 (T2), 93.5 (T3), and 86.31 (T4) cm²/quail and five replicates each. Hematological parameters were analyzed as a 4x4 factorial design (stocking density X time) over four periods of blood sampling (25, 50, 75, and 100 days). To obtain the body surface temperature (Ts, °C) three thermograms (head, core and shin) were captured from each repetition per plot (2 repetitions per experimental plot) every 25 days (25, 50, 75, and 100 days). Feed intake, feed conversion per egg mass, feed conversion per dozen eggs, egg mass, egg production rate, and eggshell quality-related variables were not affected by treatments. However, egg weight (p = 0.023) and core temperature (p = 0.003) were influenced by different cage stocking densities. The heterophil/lymphocyte ratio increased (p = 0.01) with increasing time and stocking density. The mean corpuscular volume (p = 0.0001) as well as the total leukocyte count (p = 0.001) increased until the third blood sampling period (75 days) and then decreased in the last period. Different stocking densities do not interfere with the performance and eggshell quality of Japanese quails. However, the hematological parameters and head temperature are affected by different cage stocking densities and time.

show abstract

Section: Discussioncontrasting

confidence: 99%

Productive performance, thermal and blood parameters of Japanese laying quails at different cage stocking densities

Bourdon

Souza

Oliveira

et al. 2021

RSD

View full text Add to dashboard Cite

show abstract

“…The body weight gain in broiler chickens of this study was higher than that reported by Olubodun et al (2005) at 42 days of age (2375 g / bird). Increased body weight gain by adding glutamate to broilers diet was reported by Porto et al (2015). Furthermore, according to Bezerra et al (2015) the addition of 1.76% glutamate could match the increase in broiler body weight gain without a reduction in crude protein ration.…”

Section: Body Weight Gainmentioning

confidence: 86%

Effect of Glutamate Supplementation as a Feed Additive on Performance of Broiler Chickens.

Maslami¹,

Mirnawati²,

Nur³

et al. 2019

jwpr

View full text Add to dashboard Cite

Feed additives are ingredients that are added to the ration as growth promoters and enhancement of the immune system. Glutamate is a feed additive that improves performance by improving the quality of the small intestine and enhancing the immune system. The purpose of this study was to know the effect of including glutamate as a feed additive in improving broiler performance. The material used in this study was broiler strain MB 202 from PT Charoen Phokphand Indonesia as many as 240 birds. The design used was a Completely Randomized Design (CRD) trial design, with six treatments and four replications, so that there were 24 cage plots as experimental units. Each experimental unit consisted of 10 chickens. The Glutamate doses in groups were, A (0.4% commercial glutamate; B (0% glutamate); C (0.2% glutamate); D (0.4% glutamate); E (0.6% glutamate); F (0.8% glutamate). The results indicated that glutamate up to 0.8% had significant effects on feed intake body weight gain and feed conversion ratio (1.70%), but it did not affect the percentage of carcass. It is concluded that including the 0.8% glutamate in broiler disets can improve broiler performance with 35 days of maintenance.

show abstract

“…There are studies, mainly in poultry production, that demonstrate the great plasticity of the digestive system in relation to modifications in the diet, such as supplementation of essential amino acids, energy levels, and protein, among others (Starck 1999, Aptekmann et al 2001, Ramalho de Lima et al 2013, Porto et al 2015. However, there are incipient studies in wild birds, especially migratory birds.…”

Section: Discussionmentioning

confidence: 99%

“…In commercial poultry production, the villus/crypt ratio is taken into account to determine good intestinal health: the higher the ratio, the better; that is, high villus and lower crypt depth, since in this case the increased crypt is normally related to mechanical, microbial or parasitic epithelial injury (Moreira Filho et al 2015, Porto et al 2015. However, such an analysis cannot be the same in migratory birds, in which increased crypt depth, or, increased cell division, can and should occur to increase intestinal villi upon the arrival of birds in a feeding area, and this may be a biological adaptation determined by migratory behavior.…”

Section: Discussionmentioning

confidence: 99%

Morphometry of pectoral muscle fiber and intestinal villi of Calidris pusilla during the wintering period in Brazil

et al. 2018

View full text Add to dashboard Cite

Migration is an event observed in several animals, such as shorebirds moving between the northern and southern hemispheres, during breeding and wintering intervals. Morphophysiological adaptations are necessary to allow the maintenance of migratory cycles and, therefore, studies with this focus can help clarify biological aspects related to migration. We analyzed the morphology variation in pectoral muscles and intestinal mucosa of Calidris pusilla, during different phases of the wintering period on the coast of Brazil. Fragments of pectoral muscles and duodenal were collected, fixed and processed for histology according to standard procedure, from specimens captured in a locality on the Brazilian coast. Modifications were found in the measured parameters among the three phases of wintering, arrival in Brazil (October, mid-period), January and departure to the Northern Hemisphere - May. The registered structural dynamism characterizes the growth of flight musculature and intestinal changes related to nutrition. Such changes occur temporarily due to the activities of preparation and migration between the northern and southern hemispheres.

show abstract

Glutamic Acid Improves Body Weight Gain and Intestinal Morphology of Broiler Chickens Submitted to Heat Stress

Cited by 21 publications

References 20 publications

Productive performance, thermal and blood parameters of Japanese laying quails at different cage stocking densities

Productive performance, thermal and blood parameters of Japanese laying quails at different cage stocking densities

Effect of Glutamate Supplementation as a Feed Additive on Performance of Broiler Chickens.

Morphometry of pectoral muscle fiber and intestinal villi of Calidris pusilla during the wintering period in Brazil

Contact Info

Product

Resources

About