Effect of improved pig housing on the reproductive performance of Mong Cai sows kept in small holder farms in Thua Thien Hue province

Abstract

Study in pig housing systems for reproductive sows of 978 pig farms of control group and 498 farms of experiment group in Thua Thien Hue province, results were showed that environmental conditions and sub-weather in pig different housing systems, temperature (T, ^oC), humidity (H, %) and humidity temperature index (HI, ^oC) has changed much from August to May by two seasons (dry and wet), indicated different values of three groups of control of pig farms T ranged much, from 26.1 to 30.0 ^oC, humidity was unstable, from 77.9 to 85.4 % and HI, ranged much more from 31.7 to 37.9^oC, it was not good for sows and piglets, while experimental group was ranged from 24.8 to 27.4, H, from 79.4 to 84.7%, there is an important parameter, HI was more stable, just ranged 30.6 to 33.5 ^oC, P < 0.05 respectively. Results indicated clearly that in summer time, HI was only ranged 32.2 up to 36.2^oC, it is still good for pigs of pig experimental housing groups, compared to pigs in control group, 36.6 up to 42.8 ^oC too high for sows and piglets in respiration, p < 0.05.