Effects of dietary glutamine and gamma-aminobutyric acid on performance, carcass characteristics and serum parameters in broilers under circular heat stress

Dai, Sifa; Gao, Feng; Zhang, W.H.; Song, Shangxin; Xu, Xinglian; Zhou, Guanghong

doi:10.1016/j.anifeedsci.2011.03.005

Cited by 73 publications

(73 citation statements)

References 46 publications

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“…Wang et al (2013) reported that GABA has beneficial effects such as improvement of feed intake, lactation performance, and animal health in dairy cows during early lactation. Dai et al (2011) demonstrated that dietary GABA exerted stress-relaxation functions, helping to prevent heat stress-related symptoms in growth performance and carcass traits in broilers.…”

mentioning

confidence: 99%

Effects of dietary gamma-aminobutyric acid on egg production, egg quality, and blood profiles in layer hens

Park¹,

Kim²

2015

Vet. Med. - Czech

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Hy-line brown commercial layers (32 weeks old) were used to investigate the effects of GABA (gamma-aminobutyric acid) derived from E. coli strains on productivity, egg quality, and blood profile. In total, 288 birds (1946 ± 0.5 g) were fed four different levels of GABA (0, 25, 50, and 100 ppm), in a basal diet based on corn-soybean meal, for five weeks. Egg production, egg weight, and egg mass during weeks 32 to 36 showed significant improvement, as dietary GABA was increased from 0 to 100 ppm (linear, P < 0.05). Additionally, GABA supplementation was associated with increased eggshell breaking strength and albumen height (quadratic and linear, P < 0.05). Blood variables, such as white blood cells, red blood cells, lymphocyte, cortisol, epinephrine, and norepinephrine concentrations, were not influenced by addition of GABA to the diet; however, the haptoglobin concentration decreased significantly (linearly) and the IgG concentration increased (quadratically) in the GABAfed groups (P < 0.05). These results suggest that diets containing GABA may beneficially affect productivity, egg quality, serum haptoglobin, and IgG concentrations in layers.

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mentioning

confidence: 99%

Effects of dietary gamma-aminobutyric acid on egg production, egg quality, and blood profiles in layer hens

Park¹,

Kim²

2015

Vet. Med. - Czech

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“…In addition, in a study conducted by Dai et al (2011), continuous glutamine supplementation from 1 to 42 days of age improved performance in broilers subjected to heat stress.…”

Section: Resultsmentioning

confidence: 97%

“…These results are consistent with those obtained by Mussini et al (2012), who found no effects of supplementation on any of the carcass characteristics evaluated in broilers slaughtered at 43 days of age, which were fed diets supplemented with 0.5, 0.75, and 1.0% glutamine from 1 to 28 days of age. Investigating broilers subjected to heat stress, Dai et al (2011) found that supplementation with 0.5% glutamine increased carcass, breast muscle, and thigh muscle absolute weights. In a separate study by Dai et al (2009), however, supplementation with 0.5 or 1.0% glutamine had no influence on breast absolute or relative weight at 42 days of age in broilers subjected to heat stress.…”

Section: Resultsmentioning

confidence: 99%

“…Birds kept at high ambient temperatures exhibit lower feed intake and weight gain, with negative effects on digestibility and survival rates (Siegel, 1995). Recent studies have shown that glutamine supplementation to the diets of broilers subjected to heat stress alleviates the deleterious effects of high temperature on performance (Dai et al, 2009;Dai et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

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Glutamine supplementation plans for broilers reared in high-temperature environments

et al. 2017

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-The purpose of this study was to evaluate the effect of glutamine supplementation plans on performance, carcass yield, and cut yield of broilers reared in a high-temperature environment. A fully randomized design was adopted for the experiment, comprising 900 male Hubbard broiler chicks assigned to five treatment groups (0% glutamine from one to 42 days of age; 0.5% glutamine from 1 to 7 days of age, followed by 0% from 8 to 42 days; 1.0% glutamine from 1 to 7 days of age, followed by 0.5% from 8 to 14 days and 0% from 15 to 42 days; 1.5% glutamine from 1 to 7 days of age, followed by 1.0% from 8 to 14 days, 0.5% from 15 to 21 days, and 0% from 22 to 42 days; 2.0% glutamine from 1 to 7 days of age, followed by 1.5% from 8 to 14 days, 1.0% from 15 to 21 days, and 0% from 22 to 42 days), consisting of six replicates of 30 animals each. The experiment was composed of four periods: pre-starter (1-7 days), starter (8-21 days), grower (22-33 days), and finisher (34-42 days). Glutamine supplementation plans up to 21 days do not improve the performance of broilers in the periods from 1 to 21 and from 1 to 42 days of age reared in a high-temperature environment. Carcass yields and cuts of broilers at 42 days of age are not changed by glutamine supplementation for up to 21 days.

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“…Heat stress reduces several physiological and metabolic factors in poultry such as food consumption, growth rate, feeding efficiency, eggshell quality, survivability 5,6 and serum parameters 6 . High stress also causes oxidative stress and thus weakness the in vivo antioxidant defence system 2,7 .…”

Section: Introductionmentioning

confidence: 99%

Effect of Vit E on Secretion of HSP-70 in Testes of Broilers Exposed to Heat Stress

Kapakin¹,

İmik²,

Gümüş³

et al. 2013

Kafkas Univ Vet Fak Derg

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The objective of this experiment was to investigate the ameliorative effect of vitamin E (Vit E) on tissue damage caused by heat stress in the testes of broilers, and to correlate this effect with the secretion of the HSP-70 protein. In the study totally 30 broilers (breed Ross 308) were used. Animals were divided into three groups, including the control group. Group Control (C); these broilers (24 o C) were not administered with Vit E in the diet and not subjected to heat stress. Group Stress (S); these broilers not administered with Vit E in the diet but subjected to heat stress (34 o C). Group Stress +Vitamin E (Group S + vit E); broilers subjected to heat stress (34 o C) and administered with vitamin E. Histopathological examination demonstrated the presence of degenerative alterations in testes tissue of the group S. However, there has been seen diminishing the severity of degeneration in the group S+Vit E. While secretion of HSP-70 was determined in the testes of all groups in varying degree, the highest secretion level of HSP-70 was in the group C, the lowest secretion level of HSP-70 was in the group S. It is concluded that heat stress reduces the secretion of HSP-70 in testes of broilers, when vitamin E is administered, the secretion of HSP-70 increases again and reduces tissues damage. Keywords: Heat stress, Broiler, Testis, Vit E, HSP-70 Sıcaklık Stresine Maruz Bırakılan Broilerlerin Testislerinde Vit E' in HSP-70 Sekresyonu Üzerine Etkisi ÖzetBu çalışmanın amacı broilerlerin testislerinde ısı stresinin sebep olduğu doku hasarı üzerine vitamin E (Vit E)'in iyileştirici etkisini araştırmak ve bu etkinin HSP-70 proteininin sekresyonu ile ilişkisini ortaya koymaktır. Çalışmada toplam olarak 30 adet (Ross 308 ırkı) broiler kullanıldı. Hayvanlar kontrol grubu da dahil olmak üzere üç gruba ayrıldı. Grup kontrol (C); sıcaklık stresine maruz bırakılmayan (24 o C) ve diyetlerine Vit E eklenmeyen broiler. Grup stress (S); diyetlerine Vit E eklenmeyen ancak sıcaklık stresine maruz bırakılan (34 o C) broiler. Grup Stres +Vitamin E (Grup S + vit E); sıcaklık stresine maruz bırakılan (34 o C) ve diyetlerine vitamin E eklenen broiler. Histopatolojik inceleme S grubunun testislerinde dejeneratif değişiklikler gösterdi. Ancak S + Vit E grubunda dejenerasyonun şiddetinin azaldığı gözlendi. Grupların tamamının testislerinde farklı seviyede HSP-70 sekresyonu saptanırken, HSP-70'in en yüksek seviyesi grup C'de en düşük seviyesi grup S'deydi. Isı stresinin broilerlerin testislerinde HSP-70 sekresyonunu azaltığı, vitamin E uygulandığında, HSP-70 sekresyonunun yeniden artığı ve doku hasarını azalttığı sonucuna varıldı.

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Effects of dietary glutamine and gamma-aminobutyric acid on performance, carcass characteristics and serum parameters in broilers under circular heat stress

Cited by 73 publications

References 46 publications

Effects of dietary gamma-aminobutyric acid on egg production, egg quality, and blood profiles in layer hens

Effects of dietary gamma-aminobutyric acid on egg production, egg quality, and blood profiles in layer hens

Glutamine supplementation plans for broilers reared in high-temperature environments

Effect of Vit E on Secretion of HSP-70 in Testes of Broilers Exposed to Heat Stress

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