A. M. Dolgorukova, M. S. Mikhaleva
Federal Scientific Center All-Russian Research Technological Institute of Poultry Breeding, Russian Academy of Sciences, ul. Ptitsegradskaya, 10, Sergiev Posad, Moskovskaya obl., 141311, Russian Federation
Abstract. The purpose of the research was to study the effectiveness of the introduction of exogenous carbohydrates in ovo as a way to increase bird productivity. The work was performed in 2018 on the embryos of meat and egg-producing chicken of mini-meat bred. The eggs with live embryos were divided into four groups of 50–52 eggs. Group I included intact eggs; group II was injected with 0.5 mL of 0.9% NaCl solution; group III was injected with 0.5 mL of 10% glucose solution; group IV was injected with 0.5 mL of 10% dextrin solution. The solutions were injected into the amnion of the embryo on the 18th day of incubation. In one hour after injection, the glucose content significantly increased in the blood of embryos from groups III and IV compared to the value of this indicator in groups I and II – by 8.89 mmol/L and 8.13 mmol/L versus 6.64 mmol/L and 6.75 mmol/L, respectively. On the 18th–21st days of incubation, the hatchability of eggs was 88.0–90.4%. We did not detect any significant differences between the groups. The hatched chickens were divided into groups of 30 heads. The birds were kept under floor conditions and fed with PK-5 ration ad-lib. After hatching, the relative mass of glandular (0.73% of body weight) and muscular (4.73% of body weight) stomachs of birds from group IV were significantly higher, compared with chickens from group I (0.64% and 3.94%, respectively). On the 21st day, the highest live weight was observed in birds from group IV (301.9 g). It significantly exceeded the value of this indicator in group I (283.0 g). Feeding of the embryos in the prenatal period with dextrin positively affected the early development of the gastrointestinal tract and the growth rate of chickens.
Keywords: mini-meat chickens; embryonic development; prenatal period; glucose; dextrin; in ovo injections.
Author Details: A. M. Dolgorukova, Cand. Sc. (Biol.), leading research fellow (e-mail: Этот адрес электронной почты защищён от спам-ботов. У вас должен быть включен JavaScript для просмотра.); M. S. Mikhalyova, junior research fellow.
For citation: Dolgorukova AM, Mikhaleva MS. [The effect of prenatal feeding of embryos on the development of the gastrointestinal tract and the growth rate of chickens]. Dostizheniya nauki i tekhniki APK. 2020;34(3):62-5. Russian. doi: 10.24411/0235-2451-2020-10312.