Adjustment of feed formula by damp-heat measures for pigs

First, adjust the feed formula to increase the feed intake of pigs.

1. Under the condition of high temperature, in order to reduce body heat increase and heat dissipation burden, it is bound to reduce feed intake, resulting in insufficient intake of nutrients such as energy and protein in pigs. Necessary adjustment of feed formula has become one of the effective measures to overcome heat stress.

The more the body heat of nutrients increases in ①, the more serious the heat stress after feeding. Fat has the advantages of small volume, high net energy value and less body heating. it is an ideal energy source for pigs under high temperature conditions, and less than 5% oil can be added to the feed.

The protein requirement of pigs increases under ② heat stress, so increasing the content of crude protein in feed can improve feed utilization rate and reduce the heat dissipation burden of pigs in high temperature season.

In order to minimize the effect of heat stress on seasonal infertility, the key is to maintain the normal feed intake and required nutritional intake of sows. It is very important to maintain the feed intake of breeding pigs in hot and humid weather.

2. Changing dry materials into wet mixtures can increase food intake. However, it is necessary to ensure feed quality and prevent mildew. Because high temperature and humidity can easily cause feed mildew, pigs eat moldy feed, which first leads to a further decrease in feed intake. in addition, mycotoxins (such as zearalenone, etc.) will also lead to abortion, stillbirth and mummies in sows. Backup sows lack estrus, false estrus and so on.

3. Adjust the feeding time, do not feed during the hottest period at noon, feed in advance in the morning, postpone in the afternoon, and can be fed once at night.

4. Adding 500g / m3 vitamin C and 200g / m3 vitamin E to the feed can improve the immunity of pigs, enhance the ability of anti-heat stress, increase feed intake and daily gain. Adding appropriate amount of baking soda (500 g / m3) can also alleviate the adverse effects of heat stress on pigs.

5. Adding a certain amount of green feed to boars and sows every day in summer can improve the appetite and anti-stress ability of pigs.

2. Appropriate addition of vitamins and Chinese herbal medicine

1. When the temperature exceeds 30 ℃, vitamin C, vitamin An and vitamin E can be added as appropriate.

2. Chinese herbal medicine can comprehensively coordinate the physiological metabolism of pigs under high temperature and improve the immune function of the body.

① uses Chinese herbal medicines such as tangerine peel and Scutellaria baicalensis Georgi, which have the functions of appetizing and invigorating the spleen, clearing heat and relieving heat, to prepare feed additives, which can alleviate the effect of heat stress on pigs.

② formulates vitamins, minerals and electrolytes (such as salt, baking soda) into additives according to a certain proportion, which can coordinate the regulation function of the body, enhance the adaptability and resistance of pigs to high temperature, and thus alleviate the effects of heat stress.