Effects of commercial premix vitamin level on sternum growth, calcification and carcass traits in meat duck

Zhang, Huaiyong; Liao, Hang; Zeng, Qiufeng; Wang, Jianping; Ding, Xuemei; Bai, Shiping; Zhang, Keying

doi:10.1111/jpn.13001

Cited by 7 publications

(4 citation statements)

References 35 publications

(50 reference statements)

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“…As for carcass traits, the average CY, EY and SEY of Nonghua ducks at 8w and 13w under either FRS or NRS were higher than 85%, 75% and 80%, indicating outstanding carcass traits compared with Pekin ducks, Cherry Valley ducks, White Muscovy ducks and Jingjiang ducks (a native Sheldrake breed in China) at similar ages [26][27][28][29]. Previous study on Chaohu ducks noticed the lower EY but higher AFY in NRS [9].…”

Section: Discussionmentioning

confidence: 95%

Changes in production performance, antioxidant capacity and immune status of meat ducks under different rearing systems

Guo¹,

Wang²,

Z³

et al. 2020

Preprint

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Background As potential substitutes of traditional free-range rearing, floor rearing system (FRS) and net rearing system (NRS) are currently predominant dryland rearing systems. In this study, a total of 720 Nonghua ducks were assigned to a 2 × 3 factorial arrangement with two rearing systems (FRS and NRS) and three ages (4w, 8w, and 13w) to study the effects of FRS and NRS on production performance, antioxidant capacity and immune status. Results The production performance was mainly affected at 8w. Body weight, average daily gain, eviscerated weight and semi-eviscerated weight were higher in NRS at 8w, but carcass yield was decreased at 8w and 13w (P < 0.05). Lipid deposition was enhanced in NRS with higher sebum and abdominal fat yield at 8w and 13w (P < 0.05). NRS resulted in the liver developmental retardation at 4w and decreased gizzard index at all ages (P < 0.05). Antioxidant capacity was not affected by rearing systems (P > 0.05), but a tendency of better antioxidant capacity in NRS at 4w was found, while glutathione peroxidase (GSH-Px) activity was higher in NRS at 13w (P < 0.05). Spleen and thymus were promoted in NRS and immune cytokines were extensively affected by rearing system (P < 0.05), exhibiting general higher profiles of IFN-γ, IL-1β, IL-4, immunoglobulins in NRS. Serum biochemical parameters (AST, ALT, and ALP) indicated NRS was better for liver health, and in liver, ALP was higher in FRS at 13w, while ALP and IFN-γ in 13w-FRS were both higher than 4w-FRS and 8w-FRS (P < 0.05). Conclusions Compared with FRS, NRS was conducive to production performance and duck liver health to some extent but it had defects in visceral organ development and lipid deposition. Though antioxidant capacity was not significantly affected, NRS ducks might have better antioxidant capacity at the early stage of breeding, while GSH-Px activity was increased for scavenging excess free radicals at the later one. NRS increased the levels of IFN-γ, IL-1β, IL-4, immunoglobulins in serum and promoted the development of thymus and spleen to improve duck immune function. These results revealed the physiological impacts of FRS and NRS on ducks and provided a reliable reference for rearing system selection.

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Section: Discussionmentioning

confidence: 95%

Changes in production performance, antioxidant capacity and immune status of meat ducks under different rearing systems

Guo¹,

Wang²,

Z³

et al. 2020

Preprint

View full text Add to dashboard Cite

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“…Regarding to the effect of vitamin regimens on tibial mass. Our previous study found that supplementation of 25-OH-D 3 in a high vitamin diet significantly promoted the minerals deposition of sterna compared to a low vitamin diet for 49-d-old meat ducks ( Zhang et al., 2019 ). Consistent with this finding, feeding the high vitamin diets in this study improved the tibial fat-free weight, mineral deposition and strength compared to the regular vitamin diets, suggesting that the high vitamin diets had a positive effect on tibial mass.…”

Section: Discussionmentioning

confidence: 99%

Dietary supplementation of 25-hydroxycholecalciferol increases tibial mass by suppression bone resorption in meat ducks

et al. 2020

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Leg problems often result from the rapid weight gain and poor bone quality in modern ducks, leading to a high risk of fractures and continuous pain. We hypothesized that improving bone quality in combination with delaying weight gain via a low nutrient density (LND) diet probably reverses these skeletal abnormalities. Studies indicated that 25-hydroxycholecalciferol (25-OH-D 3 ), a vitamin D 3 metabolite, is effective in treating bone-related disorders. Therefore, Exp. 1 evaluated the effects of 25-OH-D 3 on tibial mass of meat ducks. Male meat ducklings were fed a standard nutrient density diet (containing a regular vitamin regimen) without or with 25-OH-D 3 at 0.069 mg/kg for 35 d. The results showed that 25-OH-D 3 supplementation improved the mineral content, microarchitecture and mechanical properties of tibias, and this companied by a decreased serum bone resorption marker and a concomitant decrement in osteoclast-specific marker genes expression. Subsequently, Exp. 2 was conducted to examine the impacts of 25-OH-D 3 incorporating an LND diet on tibial quality of ducks under 2 different vitamin regimens (regular and high). Ducklings were allocated to a 2 × 2 factorial arrangement with 2 kinds of vitamin premixes and without or with 25-OH-D 3 at 0.069 mg/kg in LND diets. The high premix had higher levels of all vitamins except biotin than the regular premix. The results demonstrated that high vitamin diets exhibited more significant effects than regular vitamin diets on inhibiting bone turnover and increasing minerals deposition. Tibial mineral content, microarchitecture, and strength of birds under the regular vitamin regimen were increased by 25-OH-D 3 supplementation; However, these positive effects were not observed in ducks under the high vitamin regimen. To conclude, 25-OH-D 3 supplementation improves tibial mass by suppressing osteoclast-mediated bone resorption in meat ducks, and this positive impact only was observed in regular but not high vitamin regimen when birds fed an LND diet.

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“…Briefly, after centrifugation (3500× g for 10 min at 4°C), serum samples were collected and stored at −20°C for serum parameters analysis. After bleeding, the same ducks were sacrificed by cervical dislocation, the carcases were opened and the abdominal fat (AF) pads, subcutaneous fat (SF) pads were removed and weighed according to the previous study by Zhang et al (2018) [10]. The percentage of the weight of AF and SF pads were calculated as follows: weight of pads/BW × 100.…”

Section: Samplingmentioning

confidence: 99%

Effects of age and diet forms on growth-development patterns, serum metabolism indicators, and parameters of body fat deposition in Cherry Valley ducks

Lv¹,

Zeng

Ding

et al. 2022

Anim Biosci

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This study was conducted to investigate the effects of age and diet forms on growth-development patterns, serum metabolism indicators, and parameters of body fat deposition in Cherry Valley ducks.Methods: According to the hatching age and initial weight, a total of 150 1-day-old male SM 3 Cherry Valley ducks were randomly assigned to two diet forms (pellet vs. powder form). Each treatment had with 5 replicates per treatment and 15 meat ducks per replicate. The study lasted 42 d, which was divided into two periods (1-21 d vs. 22-42 d).Results: Our results showed that compared with powder group, ducks in pellet group had greater growth performance during different period (p<0.05). The day of inflection point was not numerically affected by diet forms and the inflection point was 24 d. Increasing age (42 vs. 21 d) significantly increased the weight of body fat and hepatic fat metabolism related enzymes activities in ducks (p<0.05), meanwhile, Iincreasing age (42 vs. 21 d) improved serum metabolism indicators and decreased mRNA expression levels of fat metabolism-related genes in liver (p<0.05). Ducks fed different diets (pellet vs. powder form) increased growth performance as well as the weight of body fat and improved serum metabolism indicators (p<0.05). In addition, interactions were found between age and diet forms on the levels of serum metabolism indicators in ducks (p<0.05). Conclusion:In conclusion, powder feed reduced growth performance of ducks, and the day of inflection point was 24 days old. Ducks with higher age or fed with pellet A c c e p t e d A r t i c l e 3 diet showed higher fat deposition ability. The effect of age and feed forms on body fat deposition might correalte toresult from changes in the contents of serum metabolism indicators, key enzyme activity of lipid production, and hepatic gene expressions.

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Effects of commercial premix vitamin level on sternum growth, calcification and carcass traits in meat duck

Cited by 7 publications

References 35 publications

Changes in production performance, antioxidant capacity and immune status of meat ducks under different rearing systems

Changes in production performance, antioxidant capacity and immune status of meat ducks under different rearing systems

Dietary supplementation of 25-hydroxycholecalciferol increases tibial mass by suppression bone resorption in meat ducks

Effects of age and diet forms on growth-development patterns, serum metabolism indicators, and parameters of body fat deposition in Cherry Valley ducks

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