Effect of sex on muscular development of Muscovy ducks

Baéza, Élisabeth; Marche, G.; Wacrenier, Nathaële

doi:10.1051/rnd:19990513

Cited by 19 publications

(20 citation statements)

References 12 publications

(17 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Genotype had no significant effect on the fibre type composition in muscles. Concerning muscle typology, we confirmed previous results obtained by Torrella et al [12] in mallard ducks, Gille et al [31] in Pekin ducks, Baéza et al [9] in Muscovy ducks and Baéza et al [32] in mule ducks.…”

Section: Discussionsupporting

confidence: 92%

“…In Muscovy ducks, there is a marked dimorphism on body weight which significantly influences muscle weight. Males have much heavier muscles than females but the muscle typology is the same in both sexes [9]. Concerning the effect of nutrition management, many studies have also reported that feed restriction has either no effect on the muscle typology in rats [23], in cattle [24], in pigs [25], in rabbits [26] or increases the percentage of oxidative myofibres in cattle [27], in lambs [28] and in pigs [29].…”

Section: Discussionmentioning

confidence: 99%

“…Immediately after bleeding, a breast (Pectoralis major) and a thigh muscle (Sartorius) were excised and weighed. One sample of P. major and the whole Sartorius were quickly frozen in isopentane cooled with liquid nitrogen and stored at -80 °C until histochemical analysis was performed as previously described by Baéza et al [9]. The present work was carried out in agreement with French legislation on animal experimentation and with the authorisation of the French Ministry of Agriculture (Animal Health and Protection Directorate).…”

Section: Bird Managementmentioning

confidence: 99%

See 2 more Smart Citations

Effect of genotype and overfeeding on lipid deposition in myofibres and intramuscular adipocytes of breast and thigh muscles of ducks

Chartrin¹,

Schiavone

Bernadet³

et al. 2005

Reprod. Nutr. Dev.

Self Cite

View full text Add to dashboard Cite

-We conducted a study to evaluate the effects of genotype (Muscovy, Pekin and their crossbred, hinny and mule) and overfeeding (14 days from 12 weeks of age) on lipid deposition in myofibres and intramuscular adipocytes of breast and thigh muscles of ducks. Birds of the four genotypes were also reared contemporaneously with a growing diet distributed ad libitum. Muscle samples (Pectoralis major and Sartorius) were collected at 14 weeks of age on 8 ducks per treatment. The muscle fibre typing, the total lipid and triglyceride contents in myofibres and the relative surface occupied by adipocytes on the cross-sectional area of the muscles were determined by histological and image analysis. Overfeeding induced a marked increase of body weight but had no significant effect on the muscle weight, the cross-sectional area (CSA) of myofibres and the muscle typology. In muscles, overfeeding induced a large accumulation of lipids, mainly in adipocytes whose relative surface increased 1.5 fold in P. major and 2.1 fold in Sartorius and an increase in triglyceride content of fast twitch oxydo-glycolytic and glycolytic fibres in P. major only (+ 37 and + 16% respectively). Genotype had no significant effect on the muscle typology. By comparison with the other genotypes, Muscovy ducks exhibited the highest body weight, the highest muscle weight which could partly be explained by the highest fibre CSA and the lowest intramuscular fat content in adipocytes and myofibres (only fast twitch oxydo-glycolytic fibres in P. major). We observed the reverse situation for the Pekin ducks. The crossbred ducks always presented intermediate values except for body weight. lipids / myofibres / adipocytes / muscles / ducks

show abstract

Section: Discussionsupporting

confidence: 92%

Section: Discussionmentioning

confidence: 99%

Section: Bird Managementmentioning

confidence: 99%

See 1 more Smart Citation

Effect of genotype and overfeeding on lipid deposition in myofibres and intramuscular adipocytes of breast and thigh muscles of ducks

Chartrin¹,

Schiavone

Bernadet³

et al. 2005

Reprod. Nutr. Dev.

Self Cite

View full text Add to dashboard Cite

show abstract

“…By contrast, male chickens have been reported to have lower concentrations of IGF-I than females at early ages (first 3 weeks post-hatch), and not to differ from females at later ages [14]. The differences in GH and IGF-I observed in the present study is consistent with the higher growth rate, the higher osseous [Leterrier, personal communication] and lean tissue deposition in males, particularly the breasts [4]. The decrease in IGF-I plasma levels occurring earlier and faster for the females is consistent with their earlier body development [4].…”

Section: Discussionsupporting

confidence: 82%

“…We also confirmed the difference in growth rate between sexes, females displaying earlier body and muscular development [3,4]. Therefore, Muscovy duck is an interesting model to study endocrine regulation of sexual dimorphism on body weight.…”

Section: Discussionsupporting

confidence: 81%

Sexual dimorphism for growth in Muscovy ducks and changes in insulin-like growth factor I (IGF-I), growth hormone (GH) and triiodothyronine (T3) plasma levels

et al. 2001

Self Cite

View full text Add to dashboard Cite

-Muscovy ducks display marked sexual dimorphism for body weight. The aim of our study was to analyse the possible relationships between this dimorphism and plasma levels of T3, GH and IGF-I from hatch to 15 weeks of age. We found no significant effect of sex or age on plasma T3 which remained relatively stable about 6 nM . L -1 . Plasma GH levels were highest (14-24 ng . mL -1 ) but highly variable during the first four weeks in females and during the first seven weeks in males. Then, they decreased and remained low (3-4 ng . mL -1 ) until the age of 15 weeks. A trend for higher GH concentrations in males compared to females was observed across the experimental period. The difference was maximum around 6-7 weeks of age. Plasma IGF-I levels rose sharply between 2 and 3 weeks of age and remained high until 6-7 weeks of age for the females and 13 weeks of age for the males then started to decrease. For the whole experimental period, significantly higher IGF-I levels were measured in males. The differences between sexes were significant between 7 and 12 weeks of age and at 14 weeks of age. The differences in circulating GH and IGF-I levels between sexes suggest that the somatotrophic axis is implicated in Muscovy duck sexual dimorphism. sex / dimorphism / GH / IGF-I / T3 / duckRésumé -Dimorphisme sexuel du canard de Barbarie et variation des concentrations plasmatiques en IGF-I, GH et T3. Le canard de Barbarie présente un dimorphisme sexuel sur le poids vif assez prononcé. L'objectif de la présente étude était d'analyser les relations éventuelles entre ce dimorphisme et les concentrations plasmatiques de T3, GH et IGF-I depuis l'éclosion jusqu'à l'âge de 15 semaines. Aucun effet significatif du sexe ou de l'âge n'est mis en évidence sur le taux circulant de T3 qui reste stable à environ 6 nM . L -1 . Le taux circulant de GH est très élevé et très variable au cours des quatre premières semaines chez les femelles et des sept premières semaines chez les mâles. Il décroît ensuite pour atteindre 3-4 ng . mL -1 à partir de 9-10 semaines jusqu'à l'âge de 15 semaines. Sur l'ensemble de la période expérimentale, les mâles présentent un taux circulant de GH significativement Reprod. Nutr. Dev. 41 (2001) [173][174][175][176][177][178][179] 173

show abstract

Indigenous Muscovy Ducks in Congo Brazzaville. 2. Preliminary observations on indigenous Muscovy ducks reared under moderate inputs in Congolese conditions

Banga-Mboko

Lelou

Maes

et al. 2007

Trop Anim Health Prod

View full text Add to dashboard Cite

To evaluate the potential of the native Muscovy ducks in Congo, a trial was conducted with closed housing, commercial feeding and veterinary care. The characterization included reproductive performance, daily weight gain, live body weight, feed conversion ratio, body live weight productivity, and meat productivity. The experimental genetic stock was bred under natural mating and natural incubation. The number of eggs recorded per female and per clutch was 14.6 +/- 3 eggs with 2 clutches per year. The average (+/-SD) hatchability was 75% +/- 3% and the average egg weight was 72 +/- 8 g. The sexual dimorphism for body weight appeared after 3 weeks (p < 0.05). The maximum daily weight gain in males reached 55 +/- 8 g/day and occurred at 5 weeks, whereas in females it occurred at 4 weeks and reached 35 +/- 5 g/day. The carcass yield was 70% +/- 5% and 51 +/- 8% in males and females, respectively. The meat productivity was 26.7 and 11.5 kg/m2 per year in males and females, respectively. From these findings, it can be concluded that the incubation by mother duck is preferred in the small farming duck and that males should be raised for meat and females for egg production. Further studies including local poultry-related issues are needed to optimize the performance of the native Muscovy duck in Congo-Brazzaville.

show abstract

Effect of sex on muscular development of Muscovy ducks

Cited by 19 publications

References 12 publications

Effect of genotype and overfeeding on lipid deposition in myofibres and intramuscular adipocytes of breast and thigh muscles of ducks

Effect of genotype and overfeeding on lipid deposition in myofibres and intramuscular adipocytes of breast and thigh muscles of ducks

Sexual dimorphism for growth in Muscovy ducks and changes in insulin-like growth factor I (IGF-I), growth hormone (GH) and triiodothyronine (T3) plasma levels

Indigenous Muscovy Ducks in Congo Brazzaville. 2. Preliminary observations on indigenous Muscovy ducks reared under moderate inputs in Congolese conditions

Contact Info

Product

Resources

About