As the saying goes, "Boars are good, good slopes; sows are good, good litters", so it is crucial to raise boars well. In order for breeding boars to have good reproductive performance and improve the productivity of sows, we need to understand the feeding management techniques of breeding boars. The following is the breeding management technology of breeding boars carefully sorted out for you, let's take a look.
<h1 class="pgc-h-arrow-right" data-track="2" >1, the best diet nutrition</h1>
Boars use a reasonable ratio of full-price feed to avoid nutritional imbalance. Use special boar feed. Daily feeding 2 kg -3 kg, feeding 2 times a day, timed quantitative, nipple drinker drinking water, daily feeding of high-quality fresh grass or silage 0.5 kg / head - 1 kg / head. After breeding, the feed crude protein 14.5%-15.2% (280 g-360 g) and lysine 0.7%-0.8% (12 g-18 g) can maintain the normal libido, semen volume and quality of boars. If the protein is less than 12%, the libido is low, the amount of ejaculation is small, the total number of sperm is small; it is not good to overeat protein, the boar is overweight, it is scrapped early, the blood ammonia concentration is high, and the semen quality is reduced.
<h1 class="pgc-h-arrow-right" data-track="13" >2</h1>
Exercise can make the boar's limbs and body muscles be exercised, so that the boar is physically strong, mentally active, increase appetite, improve sexual desire and sperm motility. Insufficient exercise boar snooze, obesity, decreased libido, weak limbs, affecting the mating effect. During the breeding season, nutrition should be strengthened and the amount of exercise should be appropriately reduced. In the non-breeding season, nutrition can be appropriately reduced and the amount of exercise can be increased. Boar overweight should increase exercise.
<h1 class="pgc-h-arrow-right" data-track="14" >3</h1>
Feeding boars should be regular and quantitative, with a daily feeding amount of 2.3-2.5 kg for boars with a body weight of less than 150 kg, and a daily feeding amount of 2.5-3.0 kg for boars with a weight of more than 150 kg, which can be wet mixed or dried powder. It is required that the boar diet has good palatability, and the volume should not be too large, so as not to feed the boar into a belly and affect the breeding. Under the premise of meeting the nutritional needs of boars, it is necessary to adopt limited feeding, regular quantitative, and each meal cannot be overeaten; the amount of feeding should be appropriately increased in severe winter, the nutrient concentration should be increased in hot summer, and the amount of feeding should be appropriately reduced, and the increase or decrease should be given according to the individual fat of the boar when feeding, and the 70%-80% of the stomach should be maintained. Boars are too fat or too thin, the libido will decrease, the quality of semen will decrease, and the yield rate will be affected.
<h1 class="pgc-h-arrow-right" data-track="15" >4</h1>
Boars generally start tuning at the age of six months, when tuning breeding, the ground of the breeding pen should be flat, not too rough and too slippery, and the area of the breeding pen should not be too small to avoid trauma caused by the boar during breeding. When the reserve boar is tuned, it should first choose a stable sow, and the size of the sow and the tuned boar cannot be too far apart. When the reserve boar climbs the crotch for the first time, if the direction does not correspond to the patient adjustment, assist the little boar to insert the penis into the sow's vagina and complete the ejaculation. Boars should be careful not to cause too much irritation to the boar when they are vaccinated and some necessary treatments at a young age, so as to avoid fear in the boar.
<h1 class="pgc-h-arrow-right" data-track="16" >5, semen quality check</h1>
Improve the feeding management of boars with poor semen quality in a timely manner, and adjust nutrition, exercise and breeding times according to the quality of semen. To improve the boar's libido and semen quality, it is necessary to pay attention to the suitable temperature of the small environment of 18 ° C -22 ° C, reduce the dietary energy to 13 joules / kg, light 8-10 hours / day is the best, the lower the scrotum when the boar is selected, the more convex the testicles, the better.
In short, in the breeding process of breeding boars, we must do a good job in the management measures for breeding boars to ensure the maximum breeding efficiency of pig farms.