Effect of supplementation diets of slipery fish level fat on performance, milk yield and milk composition of F1 (Landrace X Yorkshire) sows

Twenty five F1 (Landrace x Yorkshire) sows parity of 2- 4 were used to determine the effect of catfish fat to late-pregnant and lactating sows on sow and their piglets’ performance. Sows were fed trial diets from 107 d of gestation until 21 d of lactation. Diets were: control without fish fat; 2% fish fat supplementation; 4% fish fat meal supplementation; 6 % fish fat meal supplementation; and 8 % 4% fish fat meal supplementation. The sow’s diet was made from the major ingredients including rice bran, corn meal, cassava meal and soy bean meal. Sows were fed 1.7 kg per day during gestation and 0.25 kg per piglet per day during lactation. Sows were were fed twice a day in the gestation and lactation period with diets containing 14.5 and 17.50 % of CP respectively. Calculated DE concentration in the diets was 13.0 –13.5 MJ per kg. Milk samples were obtained on d 3 and 20 of lactation. Milk from sows fed catfish fat increased n-3 fatty acids on d 3 and 20 of lactation. Results demonstrated that feeding catfish lard has significant effects on sow's milk yield, fatty acid profile and number and weight of weaned piglets

Effect of genotype and dietary protein level on growth performance and carcass characteristics of fattening pigs in central Vietnam

This study aimed to determine the optimum dietary crude protein level in a typical diet for fattening pigs fed ad libitum under normal climate conditions in Central Vietnam. One hundred and ninety two gilts of Mong Cai local breed (MC), F1 Large White??Mong Cai and F2 crossbreds of (Landrace??Mong Cai)??Large White were used. At the start of the experiment, Mong Cai pigs weighed 12 kg at 11 weeks of age, F1 pigs 12.1 kg at 8 weeks of age and F2 pigs 12.2 kg at 8 weeks of age. Four diets differing in crude protein (CP) content (10.1, 13.1, 16.1 and 18.9% in DM) were formulated from rice bran, corn meal, cassava meal and fish meal. Calculated digestible energy content of the diets ranged from 13.5 to 13.8 MJ per kg DM. Pigs were housed individually in pens of 2.5 m2 each and had ad libitum access to feed in a trough as well as water in bowls. The final weights after a growing period of 150 days were 66, 86 and 96 kg for MC, F1 and F2, respectively. Feed intake of MC pigs was highest at 13.1% CP while F1 and F2 had the highest feed intake at 16.1% CP. The results showed that for MC the maximum gain was obtained at levels between 13 to 16% CP. For the F1 the maximum gain was at dietary protein levels of 16-17%. For F2 the max gain was obtained at CP levels of 16 to 18%. Feed conversion was highest in MC pigs (~4.0) followed by F1 (~3.3) and F2 (~3.1), and within genotypes was lowest at the optimum CP level (

Effect of genotype and dietary protein level on growth performance and carcass characteristics of fattening pigs in central Vietnam

This study aimed to determine the optimum dietary crude protein level in a typical diet for fattening pigs fed ad libitum under normal climate conditions in Central Vietnam. One hundred and ninety two gilts of Mong Cai local breed (MC), F1 Large White??Mong Cai and F2 crossbreds of (Landrace??Mong Cai)??Large White were used. At the start of the experiment, Mong Cai pigs weighed 12 kg at 11 weeks of age, F1 pigs 12.1 kg at 8 weeks of age and F2 pigs 12.2 kg at 8 weeks of age. Four diets differing in crude protein (CP) content (10.1, 13.1, 16.1 and 18.9% in DM) were formulated from rice bran, corn meal, cassava meal and fish meal. Calculated digestible energy content of the diets ranged from 13.5 to 13.8 MJ per kg DM. Pigs were housed individually in pens of 2.5 m2 each and had ad libitum access to feed in a trough as well as water in bowls. The final weights after a growing period of 150 days were 66, 86 and 96 kg for MC, F1 and F2, respectively. Feed intake of MC pigs was highest at 13.1% CP while F1 and F2 had the highest feed intake at 16.1% CP. The results showed that for MC the maximum gain was obtained at levels between 13 to 16% CP. For the F1 the maximum gain was at dietary protein levels of 16-17%. For F2 the max gain was obtained at CP levels of 16 to 18%. Feed conversion was highest in MC pigs (~4.0) followed by F1 (~3.3) and F2 (~3.1), and within genotypes was lowest at the optimum CP level (