Nutritive feed additive capable of increasing survival ratio of embryos in first half period of cow gestation

Abstract

The invention discloses a nutritive feed additive capable of increasing the survival ratio of embryos in the first half period of cow gestation. The nutritive feed additive comprises the following components in parts by weight: 1-5 parts of organic selenium, 5-15 parts of beta-carotene, 5-15 parts of vitamin C and 20-50 parts of an immune enhancer. The nutritive feed additive disclosed by the invention is capable of eliminating free radicals in sow placentas, maintaining the stability of environments in uteruses, improving resistance to disease and immunity of sows and embryos and achieving the purposes of increasing the survival ratio of the embryos and born number.

Description

technical field [0001] The invention relates to an additive, in particular to a nutritional feed additive which can improve the embryo survival rate of sows in the first stage of pregnancy. Background technique [0002] A large number of studies have shown that the early pregnancy of sows (breeding - gestation 90 days) is the peak period of embryo death, about 20% of embryos die at this stage, and the causes of death mainly include the following aspects. First, the growth rate is currently biased Breeding with lean meat rate, modern sows' disease resistance continues to decrease, and the embryos in the uterus are also weak, unable to snatch nutrients and are eliminated and killed; second, the fine varieties imported from abroad have weak stress resistance, The environment in the uterus is unstable, and the embryo is easily disturbed by external factors and dies, causing huge economic losses to the farm. At present, there are no targeted nutritional technical measures on how ...

AI Technical Summary

Problems solved by technology

[0002] A large number of studies have shown that the early pregnancy of sows (breeding - gestation 90 days) is the peak period of embryo death, about 20% of embryos die at this stage, and the causes of death mainly include the following aspects. First, the growth rate is currently biased Breeding with lean meat rate, modern sows' disease resistance continues to decrease, and the embryos in the uterus are also weak, unable to snatch nutrients and are eliminated and killed; second, the fine varieties imported from abroad have weak stress resistance, The environment in the uterus is unstable, and the embryo is easily disturbed by external factors and dies, causing huge economic losses to the farm. At present, there are no targeted nutritional technical measures on how to improve the disease resistance of embryos through nutritional measures and how to maintain a stable environment in the uterus