Effects of milk products (casein and lactose) on nutrient digestibility in weaned pigs fed a high fat dry diet

Two trials using a total of 48 pigs were conducted to compare protein (soybean meal and casein) and carbohydrate (dextrose and lactose) sources. In trial 1, digestion studies were conducted to determine apparent digestible energy content of the four treatments and apparent nutrient digestibility coefficients. In trial 2, pigs were sacrificed to determine ileal and total tract (apparent) nutrient digestibility coefficients. Results suggest that milk products are important to improving energy and nutrient digestibility in the young pig. The younger the pig or the sooner after weaning, the greater the benefit from their addition. The data also suggest that milk protein is of greater value in improving nutrient utilization than milk carbohydrate

Effect of fat source on performance of weaned pigs

A 5-week trial was conducted to compare various fat sources for the weaned pig. A total of 150 pigs were weaned at 19 days of age and allotted, by weight, to five dietary treatments. Treatments consisted of a control with no added fat and four fat sources (choice white grease, coconut oil, soybean oil and tallow). During the first 2 weeks, 10% fat was added, and 5% fat was added during the last 3 weeks. Average daily gain and feed/gain of weaned pigs were improved with the addition of dietary fat. During the first 2 weeks, pigs fed soybean oil had superior performance to other pigs fed additional fat. During the last 3 weeks and over the entire 5 week study pigs fed choice, white grease and soybean oil had a faster rate of gain and were more feed efficient than pigs fed the other fat sources. Among the four fat sources, tallow appeared to be least effective at improving pig performance

Apramycin for the early-weaned pig

A total of 108 21-day-old pigs, weighing less than 10 lb, were utilized in two, 28-day trials to compare the effects of feeding high nutrient-density diets with either added apramycin, neomycin, or carbadox on pig performance. In Tria1, pigs fed the diet containing Apralan® gained slightly faster and were more efficient (P<.05) than pigs fed neomycin during the first 14 days postweaning. There were no differences in pig performance in Trials I or II for the entire 28-day period. Two additional 28-day on-farm studies using a total of 427, 21-day old pigs were conducted, feeding a high nutrient-density diet medicated with either apramycin or neomycin plus terramycin. In both on-farm trials, pigs fed apramycin gained faster (P<.05) than pigs fed neomycin plus terramycin for the initial 14 days post weaning. In the second on-farm trial, feed intake was higher (P<.09) during the first 14 days for pigs fed apramycin. Additionally, pigs fed diets medicated with apramycin were slightly heavier (1. 7 and 1.5 additional pounds for the first and second on-farm trials, respectively) at 28 days post weaning compared to pigs fed neomycin plus terramycin. These results indicate that apramycin will improve the performance of early-weaned pigs fed high nutrient-density diets compared to other feed medications

The effects of sprout-damaged milo on finishing pig performance

One hundred and sixty-five, crossbred, growing-finishing pigs were utilized in two growth trials to determine the effects of sprout-damaged milo on pig performance. Sprout-damaged milo was officially graded as having 39% sprout damage and 10% broken kernels. In addition, the grain was badly weathered and discolored. In Trial 1, sprout-damaged milo was substituted for normal milo at levels of 0, 50, and 100% of the grain portion in the diet. Increasing levels of sprout-damaged milo had no effect (P>.20) on average daily gain (ADG) or average daily feed intake (ADFI) of growing pigs (91 to 145 lbs). However, pigs fed the 50 and 100% sprout-damaged milo had numerically poorer feed efficiency (8 and 11%, P>.20) than those fed the normal milo diet. In Trial 2, sprout-damaged milo replaced 0, 25, 50, 75 or 100% of the normal milo in the diet. Increasing levels of sprout-damaged milo had no effect on ADG, ADFI, or feed efficiency (F/G; P>.30) of growing-finishing pigs. These results indicate that milo with up to 40% sprout damage may be utilized in growing-finishing pig diets without adversely affecting pig performance

Effects of farm origin and respiratory disease on pig performance

Slaughter checks were conducted on 392 pigs from 9 producers to evaluate factors affecting pig performance, based on the age of the pig and its health status. Among herds, weight per day of age ranged from 1.07 to 1.32 lb/day, whereas days to 230 lb varied from 172 to 214 days. Based on statistical analysis, differences among farms accounted for 40% of the total variation in pig performance, whereas respiratory disease accounted for 20%. From our data, it was concluded that management is the major factor controlling pig performance, yet the health status of the animal is also a contributing factor

Avaliação nutricional de soja integral desativada e desempenho de leitões na fase de creche

Dois experimentos foram realizados para determinar o valor nutricional e verificar o desempenho de leitões dos 6 aos 15kg, alimentados com dietas que continham dois tipos de soja integral desativada, caracterizada pela presença (SC) ou não de casca (SS). No ensaio de digestibilidade total, foram utilizados 15 leitões machos, castrados, com média de peso inicial de 7,36±1,71kg, alojados em gaiolas de metabolismo. Exceto para energia bruta (EB), não foram observadas diferenças entre tratamentos nos coeficientes de digestibilidade da matéria seca, da proteína bruta, do extrato etéreo e da matéria orgânica, e no coeficiente de metabolização da EB entre as duas sojas avaliadas. Os teores de energia digestível e energia metabolizável na matéria natural para SC e SS foram: 3.979 e 4.300kcal/kg; 3.768 e 4.111kcal/kg, respectivamente. No experimento de desempenho, foram utilizados 56 leitões, desmamados aos 21 dias de idade, com média de peso inicial de 6,19±0,67kg. Neste experimento, os leitões receberam os dois tipos de soja integral desativada em três porcentagens de inclusão. Não foram observadas diferenças para as variáveis de desempenho com a inclusão da soja desativada às dietas. Concluiu-se que os tipos e as porcentagens de inclusão da soja podem ser utilizados na dieta de leitões