Lactational Feed Intake and Sow Retention
نویسنده
چکیده
John Deen, Sukumarannair S. Anil y Leena Anil*. 2006. Vo Congreso de Producción Porcina del Mercosur, Río Cuarto. *University of Minnesota. www.produccion-animal.com.ar Volver a: Vo Congreso In our analyses we are often driven by averages. It can be average daily gain, average daily feed intake, average temperature in the barn or even average weight of pigs. Yet it is the extremes in each of these that cause the most problems. The old saying is “I have my head in the oven and my feet in ice water, so on average I am OK”. We are seeing that it is variation in temperatures within a grow finish barns that can cause many problems. I have also argued that average weights at marketing show little while it is the tail end pigs that cause the most problems. Feed intake can be examined in the same way. Average feed intake shows general trends within the group, but it may be that the extremes, especially the low extremes are better indicators of the problem.
منابع مشابه
Nitrogen Metabolism in the Young Sow
The establishment of quantitative relationships between nitrogen (N) retention and energy and protein intake in breeding animals is essential to enable producers to determine the consequences of altering nutrient intake on changes in body composition, reproductive efficiency and lactational performance. Results of an experiment with pregnant gilts revealed that maximum rates of N retention occu...
متن کاملFirst analysis of factors influencing feed intake of sows during lactation
During lactation, sows need to eat a sufficient amount of feed to meet the requirements of milk production to nurture their litter and to sustain their body condition. Overall, information about feed intake of lactating sows is limited. In addition, information about other factors influencing feed intake of the sow may be incomplete. These factors include feeding strategy, lactation length, lit...
متن کاملThe influence of nutrient intake on biological measures of breeding herd productivity
YK, GDD, VLK:Department of Clinical and Population Sciences, College of Veterinary Medicine, 1988 Fitch Avenue, Room 385, St. Paul, Minnesota, 55108; JEP: Department of Animal Science, University of Minnesota, St. Paul, Minnesota, 55108 Summary: This review examines the influence of lactational feed and nutrient intake on common measures of breeding herd productivity: weaning-to-first-service i...
متن کاملRelationship of gestation protein and feed intake level over a five-parity period using a high-producing sow genotype.
High-producing Landrace-Large White crossbred gilts (n = 50) involving 198 farrowings were used to evaluate dietary gestation protein (13 vs 16% CP) and gestation feed intakes (Control vs High), and their interaction, over a five-parity period on sow reproductive performance. Gestation feed intake for Control was 1.81 kg/d during parity 1, increasing by .09 kg for each successive parity. The da...
متن کاملInteractions between major nutrients in the diet and the lactational performance of rats.
The effect on lactational performance of replacing feed carbohydrate with fat at two different protein levels was studied. Lactating Sprague-Dawley rats with a standardized litter size of thirteen pups were allocated one of eight feeds containing either 300 or 150 g protein/kg organic matter (OM) and ranging in fat content from 100 to 550 g/kg OM from day 2 until day 14 of lactation. Daily food...
متن کامل