How to raise a bull? Cattle breeding is to produce high-quality semen, and its excellent traits are stably passed on to the next generation, which plays an extremely important role in the development and improvement of beef cattle.

Let's take a look at the main points of bull feeding management.

First, the reproductive goal of the bull.

1. A bull with strong physique should be above average in weight, with obvious waist angle but not prominent, slightly exposed ribs, full of energy and full of male strength.

2. The semen quality of bulls with excellent semen quality is closely related to their mating ability. Especially today, when the cold matching technology has been applied to production, it is required that bull semen not only has good quality, but also has good frost resistance, which meets the requirements of making frozen semen. The indexes for evaluating semen quality include ejaculation volume, sperm motility, sperm density and motility, and the density of frozen semen after thawing.

3. Bulls with long service life generally have sexual performance at 7 months old, and reach sexual maturity at 10 ~ 14 months old.

Bulls should not be overused before adulthood, and the dietary concentration should be reasonably prepared according to the intensity of use to ensure the reproductive life of bulls and prevent health deterioration and premature aging.

Second, the main points of breeding bulls

1. Bulls' diets should be nutritious, diverse, palatable and digestible, with proper combination of green, coarse and fine.

Both roughage and concentrate should be of high quality, and high-quality grasses, beans and tubers (such as carrots) are the best roughage; Juicy feed, dregs feed, energy feed and roughage should not be fed more to prevent the formation of grass belly or obesity.

2. The diet composition of bulls without mating task can be supplied according to 100 kg body weight: hay 1.5 kg, root tuber 1.0 ~ 1.5 kg, silage 8 ~ 10 kg and mixed concentrate 0.5 ~/.

3. Nutrition should be strengthened in the first 8 weeks of mating season, especially the supply of animal protein, minerals and vitamins, because it takes about 8 weeks from sperm formation to preparation for ejaculation.

Third, the management points of bull breeding

1, group management.

Feeding in groups according to weight and physique.

2, fixed trough fixed cattle bed.

This is beneficial to the conditioned reflex and good living habits of cattle.

3. Brush all over your body.

Brush 1~2 times a day to increase blood circulation and promote growth and development.

4. Make a group by column.

At the age of 12 months, 18 months and two months before delivery, the cows were divided into groups according to their development, weighed and measured at the same time, and recorded.

5. Preliminary matching in time.

The estrus date of breeding cows 18 months old should be recorded. After several oestrus, breeding cows with mature conditions should be bred in time.