THE DYNAMICS OF THE LIVE WEIGHT THE SHAVER BROWN EGG-LAYING

Abstract

The dynamics of growth of the live weight, digestive canal, liver, pancreas in the hens of the Shaver-Brown cross in the egg direction of productivity were studied in postembryonic ontogenesis from 1 day to 476 days of age. It was established that the most intensive growth of the live weight of the bird occurs before the 28-day age. For the period from 1-day to 28-day-old live weight in chickens was increased in comparison with the weight of one-day chickens by 6.52 times, males - 7.61 times; from 1-day to 140-day (puberty period) - in chickens 34.98 times, in cocks - 45.43 times; for the entire postembryonic period (476 days) increased by 45, 93 times, roosters - 60.93 times, respectively. The weight of the ante-rior part of the intestine for the entire postembryonic period increased in 22.19 times, and the males - 27.54 times; the middle part of the intestine is 45.8 and 60.46 times; and the back of the intestine - 81.3 and 72.2 times, respectively. The weight of the liver for the entire postembryonic period in chickens in-creases 35.67 and in males it is 49.9 times. The weight of the pancreas in chickens is increased 70 times and in males it is 82 times.

Keywords

• куры
• Шейвер 2000
• живая масса
• пищеварительный канал
• постэмбрио-нальный онтогенез
• печень
• поджелудочная железа