How restrict feed intake by pigs feed ad libitum?
Best insight from top research papers
Pigs regulate their feed intake based on factors such as feed energy concentration, protein content, and environmental temperature. When feed is abundant and has high energy concentration, pigs consume less feed . However, if the protein content is insufficient, pigs tend to consume larger amounts of feed to meet their amino acid requirements . On the other hand, if protein is in excess, there is a slight decrease in feed consumption, but it does not affect the growth process . Additionally, feed consumption decreases linearly with increasing environmental temperature, leading to a decrease in ingested energy . In a study, restricting feed intake by about 45% during the early growth period improved subsequent performance, including daily weight gain and feed efficiency, while reducing fat deposition .
Answers from top 4 papers
More filters
| Papers (4) | Insight |
|---|---|
01 Jan 1980 13 Citations | The study found that restricting feed intake by about 45% in pigs from 5 to 25 kg improved weight gain, feed efficiency, and protein deposition. |
| The paper discusses various factors that affect voluntary feed intake in pigs, including sensorial evaluation of feeds, hormonal and metabolic regulation, pig health, genetic background, feeder design, environmental conditions, and the use of models to predict feed intake. | |
| The study found that pigs with restricted feed intake had improved growth performance, reduced backfat, increased dressing percentage, and reduced maintenance requirements compared to pigs fed ad libitum. | |
Open access 31 Oct 2007 | Feed intake by pigs can be restricted by increasing the energetic concentration of the feed and by increasing the environmental temperature. |
Related Questions
How to calculate space requirement for pigs?5 answersSpace requirements for pigs can be calculated using various methods. One approach is to use animal-based biometric data to determine the static space needed for the body dimensions of individual pigs. This can be done by measuring the area covered by an individual pig, which increases linearly with increasing body weight. Another method is to develop prediction equations based on data from existing literature. These equations take into account factors such as floor space allowance, initial and final body weight, feeder and water space, group size, and floor type. Broken-line analysis can also be used to establish space requirements, with a critical value of floor space allowance below which a decrease in growth rate occurs. Additionally, direct measurements on the animal or digital image analysis can be used to estimate the space occupied by a pig. These methods provide valuable insights into the space requirements of pigs and can help inform recommendations for pig farming.
What are the nutritional requirements of lactating sows?4 answersLactating sows have specific nutritional requirements to support milk production and ensure optimal reproductive performance. The primary components of their diet include energy, amino acids, vitamins, and minerals. Energy requirements increase significantly during lactation, and sows often catabolize body fat and protein to meet the demands for milk production. Amino acids, particularly lysine, are essential for milk protein output and reducing muscle protein mobilization. Adequate vitamin and mineral intake is crucial for colostrum quality and subsequent litter growth. The dietary fiber can provide short-chain fatty acids as an energy source for the uterus before farrowing. The nutrient composition of the diet can also impact reproductive performance, litter growth rate, and the number of pigs weaned. Overall, meeting the specific nutrient requirements of lactating sows is essential for ensuring optimal milk production, reproductive performance, and piglet growth.
What is the best diet for fattening pigs?5 answersThe best diet for fattening pigs depends on the specific goals and requirements. One study found that supplementation with extruded linseed increased the nutraceutical quality of pork meat by improving the fatty acid profile, increasing the level of omega-3 fatty acids, and reducing fat content. Another study showed that a feed containing soybean meal, puffed corn flour, bone meal, fish meal, distillers' grains, sweet potatoes, peanut powder, rice bran, red jujube residues, and traditional Chinese medicine powder improved the immunity, growth, and feed conversion rate of fattening pigs. Similarly, a high-quality feed made from corn, wheat bran, fermented soybean meal, cottonseed cakes, fish meal, bone meal, alfalfa meal, rapeseed meal, sweet potato vine meal, corn cob meal, and an additive was found to effectively improve pork quality and increase pig growth rate. Additionally, the supplementation of micelle silymarin in the diet was found to improve pig growth, nutrient digestibility, meat quality, and reduce toxic gas emissions. Finally, a feed containing a combination of corn, sorghum, wheat bran, rice bran, peanut cakes, sunflower seed cakes, soybean meal, and various additives including Chinese herbal medicines and trace elements was found to improve nutritional intake, reduce disease incidence, and improve meat quality.
What is difference in dry matter intake of pigs feeding liquid or dry feed?4 answersThe difference in dry matter intake of pigs feeding liquid or dry feed is not explicitly mentioned in the abstracts provided. However, the abstracts do provide information on the effect of different feeding methods on pig growth, feed efficiency, and carcass quality. For example, one study found that wet/dry feeding of a pelleted diet resulted in higher growth rates and improved feed efficiency in grow-finisher pigs compared to other feeding methods. Another study found that liquid feeding a diet prepared at a water-to-feed ratio of 3.5:1 maximized feed efficiency without negatively affecting dressing percentage in growing-finishing pigs. These findings suggest that the feeding method and diet composition may have an impact on pig growth and feed efficiency, but the specific difference in dry matter intake between liquid and dry feed is not addressed in the abstracts.
What is the effect of space allowance on the risk of tail biting in pigs?5 answersThe effect of space allowance on the risk of tail biting in pigs is influenced by various factors. Finnish pig production, which allows for a comparably larger space allowance, has shown success in rearing non-docked pigs and reducing the risk of tail biting. In a study comparing two different pen designs, it was found that pigs housed in pens with increased space allowance and solid flooring had fewer tail damaged pigs and better overall welfare assessment. Another study conducted in China found that increasing space allowance improved the average daily gain and feed conversion ratio of pigs, while the provision of toys further enhanced these effects. These findings suggest that providing pigs with a larger space allowance can help reduce the risk of tail biting and improve their welfare and production performance.
How to reduce feed intake by pigs feed ad libitum by nutrition?5 answersTo reduce feed intake by pigs when fed ad libitum, it is important to consider the frequency and size of meals, as well as the composition of the feed. Pigs fed ad libitum follow their intrinsic feeding behavior, and reducing the feed intake level or feeding frequency can affect digestibility and transit time, as well as induce metabolic changes. Adding alternative ingredients rich in dietary fiber to the diet can help reduce feed costs, but fiber can also decrease energy density and cause viscosity, affecting digestion and transit time. Exogenous enzymes can be added to counteract the effects of fiber, but the efficiency of these enzymes can be influenced by meal size and frequency. Understanding the physiological factors involved in feed intake regulation, such as sensorial evaluation of feeds, hormonal and metabolic regulation, and pig health, can also help in formulating diets to optimize performance.