TAILIEUCHUNG - The influence of weaning time on the growth of piglets and reproductive performance of sows in Viet Yen district, Bac Giang province

Findings of the influence of weaning age on the growth of piglets and reproductive performance of Landrace, Yorkshire sows showed: When weaned at 18 days old, weaners grew better than those weaned at 25 days of age, in particular: In the period of 45 and 60 days, weaner‟s bodyweight was, 13,62; 21,19 kg - 13,29 and kg/head respectively with (P | Trƣơng Hữu Dũng và cs Tạp chí KHOA HỌC & CÔNG NGHỆ 77(01): 69 - 75 THE INFLUENCE OF WEANING TIME ON THE GROWTH OF PIGLETS AND REPRODUCTIVE PERFORMANCE OF SOWS IN VIET YEN DISTRICT, BAC GIANG PROVINCE Truong Huu Dung1*, Nguyen Thi Hanh2 1 College of Agriculture and Forestry - TNU Viet Yen Bac Giang College of Agriculture and Forestry 2 ABSTRACT Findings of the influence of weaning age on the growth of piglets and reproductive performance of Landrace, Yorkshire sows showed: When weaned at 18 days old, weaners grew better than those weaned at 25 days of age, in particular: In the period of 45 and 60 days, weaner‟s bodyweight was, 13,62; 21,19 kg - 13,29 and kg/head respectively with (P 0,05), respectively. Weaned piglets at 18 days of age also help the sow re-estrus sooner, which reduces weight loss and improves feed consumption ratio (FCR) of weaners at 60 days of age compared with weaned pigs at 25 days of age, these values were: 5,11 - 6,75 days (P 0,05) and increased gradually through the periods, exactly reflected the normality of the cumulative growth of piglets. During period from birth to 30 days old, piglets grew in two equal groups, which were 1,62- 8,57 kg/ head and 1,63 - 8,44 kg/ head respectively. So in this period, the early weaning did not only reduce the capacity of growing, but also promoted the growth of piglets in the next stage. Results obtained during the period from 30 45 days of age showed that growing pigs in experimental group and the control group had different bodyweight,:13,62 and 13,29 kg/ head, respectively (P 0,05), respectively. After weaning, the experimental and control groups showed that the incidence of diarrhea decreased over the corresponding periods was: 3,49 - 3,85% and 1,10 - 1,14% (P> 0,05), respectively. This finding suggests that, in the later stages of weaning, the infection rate for digestive pathogen of both groups were reduced and there was no difference found amoung the group, it might be due to pigs had .

• Nông nghiệp
• The influence of weaning time
• The influence of weaning time on the growth
• The growth of piglets
• Bac Giang province
• Reproductive performance of sows