The effect of peripheral administration of ghrelin on the performance of growing geese

Shahryar, Habib Aghdam; Lotfi, Alireza

doi:10.5194/aab-58-211-2015

Cited by 6 publications

(4 citation statements)

References 26 publications

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“…Therefore, the present findings are in accordance with the results of Tachibana et al (2011), who stated that the administration of ghrelin did not affect feed intake. In a recent study conducted by Höhne et al (2017) on laying hens and also in a study of our research team in geese (Aghdam Shahryar and Lotfi, 2015), peripheral ghrelin administration did not affect energy demands or feed intake at whole growing period or at least finishing rearing-period. It appears that in agreement with Kaiya et al, (2013), only central-/ or endogenous-ghrelin may have a significant effect on appetite (feed intake) regulation in birds, and not exogenous or peripherally-administered ghrelin, especially in finishing rearing-period of chickens.…”

Section: Discussionmentioning

confidence: 70%

“…On the other hand, the effects of peripheral ghrelin administration in poultry species is not completely similar; for example in domestic geese (Anser anser domesticus) results in an increase of feed intake during the growing period (Aghdam Shahryar and Lotfi., 2015), a finding that is in contrast with that of Oclon´ and Pietras, (2011) and Lotfi et al, (2013) in broiler chickens.…”

Section: Introductionmentioning

confidence: 99%

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Effect of ghrelin peripheral administration on growth performance, carcass quality, and selected serum parameters in broiler chickens

Shahryar

Lotfi

2020

J Hellenic Vet Med Soc

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The aim of present study was to investigate the short-term and long-term effect of the peripheral administration of ghrelin on the growth performance (feed intake, weight gain, and feed conversion ratio), carcass quality, and selected serum biochemical (glucose, total cholesterol, triglyceride, and total protein) and hormonal (T 3 , T 4 , and corticostrone) indices in broiler chickens. 240 one-day-old broiler chickens were selected, and allocated into three treatment groups (control and two experimental groups). On day-21 of the rearing period, ghrelin was peripherally administrated to three experimental groups. The control group contained birds without any administration of peptide or solution, groups G50 and G100; included birds with Ip-injection of 50 and 100 (ng/100g BW) ghrelin peptide, respectively. The peripheral administration of exogenous ghrelin did not affect feed intake, body weight gain (BWG), feed conversion ratio (FCR) and carcass characteristics in broiler chickens. In short-term samples taken 12h after ghrelin infusion, the glucose level was increased in ghrelin-treated groups (162 and 151 mg/dl in G50 and G100 compared with 117 mg/dl in control; P< 0.01) and there were significant declines for TC, triglyceride, and TP in the ghrelin-treated groups (G50 and G100) compared with the control. In addition, long-term glucose level has a greater value in G50 and G100 (182 and 200.66 mg/dl) compared with control (133.60 mg/dl) group (P< 0.01). A significant decline was also observed for TC and triglyceride content in the ghrelin-treated groups (P<0.05). There was no significant difference among groups for TP in short-term and long-term samples. There was a significant increase for T4 in ghrelin-treated groups (G50 and G100) compared with the control (4.55 and 4.57 ng/ml vs 4.20 ng/ml respectively; P< 0.05) in long-term samples. In conclusion, the peripheral administration of ghrelin in broiler chickens, during the commercial rearing period did not affect the overall growth performance, carcass quality and feed conversion ratio. The infusion of exogenous ghrelin may increase the levels of serum glucose, decrease total cholesterol and triglyceride, and T 4 levels are increased in the long-term (and not in the short-term or 12h after administration).

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Section: Discussionmentioning

confidence: 70%

Section: Introductionmentioning

confidence: 99%

Effect of ghrelin peripheral administration on growth performance, carcass quality, and selected serum parameters in broiler chickens

Shahryar

Lotfi

2020

J Hellenic Vet Med Soc

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“…The production of goose on an industrial basis -requires the introduction of a scientifically based system of breeding, keeping, feeding farm birds, which includes a complex of zootechnical, veterinary and organizational measures that ensure uninterrupted production of eggs, meat, poultry feathers at the lowest cost of manual labor and feed The geese have a high growth rate (Aghdam Shahryar and Lotfi, 2015;Zaplatynsky, 2017;Orishchuk et al, 2017). The live weight of one goose from the one day age to 56-60-day-old age increases by 40-45 times and reaches an average of 4 kg at a cost of 1 kg of weight gain of no more than 3 kg of feed.…”

Section: Introductionmentioning

confidence: 99%

Meat quality of obroshyno grey geese while their cultivation

Petriv

Sloboda

2018

Ukr. Jour. of Vet. and Agr. Sci.

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The process of cultivating obroshyno gray geese improved their meat qualities. In particular, we determined by our researches that, based on the indicators of live weight, the males of the II group (4726 g) prevailed geese of the I and II groups (1.02%), while females of the ІІ group (4153 g) prevailed all groups by 4.19%. The weight of non-eviscerated males of the II group was 4116 g, which is 3.78% higher than that of males of the group I, while females of the group ІІ (3461 g) surpassed other geese by this indicator by 5.10%. The weight of eviscerated of carcasses of males of the II group was 3211 g, which is 3.5% higher than that of males of group I, while females of the second group (2738 g) surpassed others by 6.6%. The outcome of edible parts in the young geese of experimental groups was quite high, but the highest was the young in the second group. In males of the second group, this inicator was 61.5%, and females – 58.9%. The weight of the chilled carcasses of males of the II group was 3120 g, which was 3.93% higher than that of the males of the group I, while the females of the second group (2691 g) surpassed others by 7.04%. The weight of the skin with subcutaneous fat in males of the second group was 706 g, which is 3.67% higher than that of male of the group I (681 g), while females of group II (632 g) surpassed others by 4.64%. The mass of internal fat in males of the ІІ group was 111 g, which is 15.62% higher than that of male of the I group (95 g), while females of ІІ group (72 g) exceeded others by 12.5%. The weight of the muscles in the males of the second group was 1695 g, which is 8.58% higher than that of the male of the group I (1561 g), and the females of the second group (1399 g) surpassed others by this indicator – by 7.6%. The obtained data indicate that the most intense accumulation of dry matter in the chest muscles up to 9 weeks of age occurs in geese of the II group. A similar situation is observed in the femoral muscles. At 9 weeks of age, the males of the second group had 29.74% of the dry matter in the breast muscle of the crude mass, females – 27.35% of the crude mass, and in males of the I group – 27.74%, of females – 27.30%. The same regularity in the content of dry matter is noted in the femoral muscle. The accumulation of protein in the studied muscles of geese, as the main indicator of meat quality, was in accordance with the general laws. The highest rate was in the thoracic and femoral muscles of males and females of the II group. The highest level of total nitrogen content in the muscles was found in males of the second group. In experimental geese, the accumulation of protein nitrogen in the chest muscle is higher than in the muscles of the legs. This indicator is higher in males than females. According to the content of albuminous nitrogen in the chest muscle, the highest rate was observed in males II group (3425 mg%). Non-protein nitrogen in the chest muscles and leg muscles increased to 9 weeks of age.

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“…на голову; маса яйця -153,2 г; запліднюваність -83,5%; виводимість -71,8%; жива маса гусей в 9-тижневому віці -самці 4,05 кг, самки -3,67 кг; збереженість -87,0%. 2 Вступ У гусівництві України формується м'ясний напрямок, з використанням птиці з генетично обумовленими ознаками: інтенсивним ростом в ранньому віці, здатністю до відгодівлі на жирну печінку, підвищениим виходом пера та пуху прижиттєвої обскубки (Aghdam Shahryar & Lotfi, 2015;Orishchuk et al, 2017). Удосконалення вітчизняного генетичного матеріалу гусей можливе при наявності селекційних програм з використанням ефективних селекційних методів, в тому числі і схрещування.…”

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Reproductive and feather-fluff qualities of the obroshyno breed geese group in the third generation with blood of geese of great gray and legart breeds

2019

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We set the aim to study the effect of the blood influx of large gray geese and legart geese breeds on the productive qualities of the obroshyno breed group of geese in the third generation) and the legarts that have been highlighted in our previous publications. With the descendants of these crosses breeding and breeding work was conducted in the direction of breeding and productive qualities improvement. For our research, four groups of 50 birds each were compiled from the livestock of geese, which were kept separately for the breeding and egg laying periods (from January to May) to ensure proper feeding and retention. The average geese live weight at the beginning of oviposition were: females OS – 6.25 kg, OB – 6.35, OS ♀ (OS ♀ x BC ♂) – 6.45, OB ♀ (OB ♀ x legart) – 6.5; males OS – 7.15 kg, OB – 7.35, OS ♂ (OS ♀ x BC ♂) – 7.45, OB ♂ (OB ♀ x legart ♂) – 7.50 kg. The duration of oviposition was higher in purebred geese (groups I and III) compared to domestic geese (groups II and IV). The average oviposition of the group I geese was highest – 41.0 pcs/head and was dominated by the group II geese by 1.2%. The weight of OS of geese of group III amounted to 40.6 pcs/head and was dominated by local geese of group IV by 2.9%. However, domestic geese (groups II and IV), by weight of eggs, outperformed purebred geese (groups I and III) by 2.1 and 4.5%, respectively. The study of incubation qualities of eggs shows that the fertilization in purebred AB and OS geese (groups I and III) was 83.9% and 83.0%, and the analogues from II and IV groups prevailed by 0.4 and 0.5%, respectively. The higher hatchability of the geese was in hybrid geese (groups II and IV) than in purebred OBS and geese OS (groups I and III). On the basis of the conducted researches the following conclusions were made: 1. The productivity of geese AB of the breed group (group I) is characterized by the following performance indicators: oviposition – 40.6 pcs. per head; egg weight – 153.2 g; fertilization – 83.5%; deductibility – 71.8%; live weight of geese at 9 weeks of age – males 4.05 kg, females – 3.67 kg; conservation – 87.0%. 2. Local geese of OB x legart (group II) had lower productivity rates: by 2.9%, they had a low fertility rate of 0.5%; fertility – 1.5%; live weight of geese at 9 weeks of age: males – 6.7%, females – 4.6%; conservation – 2.0%; at higher egg mass by 2.1%. 3. Geese of the OS of the breed group (group III) are characterized by the following performance indicators: oviposition – 40.6 pcs. per head; egg weight – 153.2 g; fertilization – 83.0%; excretion rate – 71.0%; live weight of geese at 9 weeks of age – males 4.05 kg, females – 3.67 kg; conservation – 87.0%. 4. Local geese OS x ВS (group IV) are characterized by lower indicators, respectively: with a yield of 2.9%, higher fertilization – 0.5%; with a yield of 1.5%; live weight of geese at 9 weeks of age: males – 6.7%, females – 4.6%; conservation – by 2.0%; at higher egg mass by 4.5%.

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The effect of peripheral administration of ghrelin on the performance of growing geese

Cited by 6 publications

References 26 publications

Effect of ghrelin peripheral administration on growth performance, carcass quality, and selected serum parameters in broiler chickens

Effect of ghrelin peripheral administration on growth performance, carcass quality, and selected serum parameters in broiler chickens

Meat quality of obroshyno grey geese while their cultivation

Reproductive and feather-fluff qualities of the obroshyno breed geese group in the third generation with blood of geese of great gray and legart breeds

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