发表于 2008-07-24 18:48 | 只看该作者
其中还调强一句"There is no need to give a vitamin or mineral supplement."
1 Calcium is one supplement that deserves some special attention. Supplementing a pregnant dog is definitely not recommended.
2 Although it is true that a female's need for calcium increases during pregnancy and lactation, supplementing with calcium is not necessary.
3 do not supplement your pregnant dog with calcium unless specifically instructed by your veterinarian.
4 Don't give your dog vitamin or mineral supplements, especially calcium supplements
文中提到:When a female is nursing, there is an increased demand for calcium. The bones provide an abundant resource, but the withdrawal of calcium from the bones depends on several hormones.
1 Further, supplementation can suppress her natural calcium releasing hormones so that when she really needs extra calcium during nursing, she will not have the proper hormone balance to get it. This can create a very dangerous situation which could easily be avoided by avoiding supplementation of calcium.
2 Giving calcium supplementation, especially late in pregnancy, has been linked to increasing the risk of eclampsia (low blood calcium) in nursing dogs. Excess calcium has also been linked to difficult deliveries, soft tissue calcium deposits in the puppies and certain joint abnormalities in the pups. For this reason, do not supplement your pregnant dog with calcium unless specifically instructed by your veterinarian.
3 Eclampsia can occur before delivery or up to 6 weeks after delivery. Often it appears in the first 3 weeks after delivery. It is caused from receiving to high a dose of supplemented calcium.
4 Adding calcium to the bitch’s diet can actually increase the likelihood of eclampsia or milk fever once the puppies are born.
5 Nor will supplementing with calcium prevent eclampsia (sometimes called "milk fever"), which may occur after the young are born and nursing. Eclampsia is not a nutritional disease, but a metabolic condition. Eclampsia occurs when these hormones are not helping to release enough calcium for the extra demands of milk production.