Pregnancy and nursing are not only responsible for many changes in a dog's body, but for changes in her lifestyle as well. If your dog is pregnant or nursing, pay special attention to her changing nutritional needs as she carries, delivers and nurses her puppies.
If you're planning to breed your female dog, it’s important to assess her body condition well in advance of breeding. Because of the physical demands of pregnancy and nursing, a dog with less-than-ideal health can experience problems:
Be sure to feed the proper amounts of a complete and balanced diet. This will support the mother's healthy weight and body condition before breeding and help maintain her health and that of her babies throughout pregnancy and lactation.
The gestation period for dogs is nine weeks. Pregnant dogs gain weight only slightly until about the sixth week, and then gain weight rapidly.
The energy requirements of pregnant dogs are reflected in the pattern of weight gain. Pregnant dogs will need to consume 25% to 50% more than their normal food intake by the end of pregnancy, but energy requirements do not increase until about the sixth week.
The best diet for pregnant and nursing dogs is a high-quality, nutrient-dense pet food formulated for all life stages or for growth. Although puppy diets are generally recommended for pregnant or nursing dogs, large-breed puppy formulas may not be appropriate for this use due to their adjusted energy and mineral content.
Pregnant dogs lose weight after giving birth, but their nutritional needs increase dramatically. Depending on litter size, nursing dogs might need two to three times their normal food requirement to nourish their pups. Be sure your nursing mom has plenty of water so she can generate the milk volume she needs to feed the litter.
To help your nursing dog get enough nutrition, you can try several tactics:

By four to five weeks after birth, most puppies are showing an interest in their mother’s food. Gradually, the puppies will begin eating more solid food and nursing less. At the same time, the nursing mother will usually begin eating less. Most puppies are completely weaned around age 7 to 8 weeks. By this time, the mother's energy requirement is back to normal, and she should be eating her normal pre-pregnancy diet.
Beet pulp is an important source of fiber that is good for helping your dog maintain intestinal health and can enhance his ability to absorb ingredients. Beet pulp is the material that remains after sugar is extracted from sugar beets.
There are two types of fiber: Nonfermentable and fermentable. Nonfermentable fiber remains undigested as it passes through a dog's intestines, providing bulk to move wastes out. Cellulose is an example of a nonfermentable fiber.
In contrast, fermentable fiber is broken down in the intestines into short-chain fatty acids that provide energy for cells that line the intestine.
Moderately fermentable fiber does both: It provides bulk to move waste and supplies energy to cells lining the intestine. Beet pulp is a moderately fermentable fiber. IAMS™ products contain a patented, moderately fermentable fiber, beet pulp, to keep your dog's digestive system healthy.
Beet pulp contains no toxins and is not harmful. It is a very safe fiber source. Beet pulp does not affect coat color. There is nothing in beet pulp that can affect coat pigment—the inside is light in color, and the dark outside peel is not used in our foods.
By definition, beet pulp is the material left over after the sugar is removed from sugar beets. Therefore, beet pulp contains no sugar.
There is no evidence that beet pulp causes bloat. Bloat (gastric dilatation-volvulus or GDV) is related to a stomach defect that delays the stomach’s emptying. It is believed that bloat is not related to diet or ingredients, such as beet pulp. However, the cause of bloat remains unknown.
IAMS has conducted extensive research on many types of fiber. The results of this research point to the fact that beet pulp maintains intestinal health and works with other nutrients to provide optimal nutrition in all of our products, including IAMS™ ProActive Health™ Adult MiniChunks. No other food manufacturer can match our formulas. Only IAMS holds a patent for moderately fermentable beet pulp.