Supplementary feeding formula and method for shortening slaughter period of yak
A yak and formula technology, applied in the field of animal breeding, can solve the problems that silage is not good for yak health, shorten the yak appearance cycle, shorten the yak and other problems, and achieve the effect of shortening the slaughtering cycle, reducing the supply of protein and good palatability.
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Embodiment 1
[0019] 1. Preparation of supplementary feed for yaks: Mix 21.13% old awns, 70.42% silage corn, 2.82% concentrated feed, 0.7% urea, 4.23g calcium bicarbonate, and 0.7% salt. Among them, the silage corn, the water content before silage is adjusted to 70%, and after kneading, cutting and crushing, the silage is wrapped with a silage wrapping machine for preservation.
[0020] 2. Supplementary feeding method: for yaks over 6 months old, the daily supplementary feeding amount is 2% of the yak's body weight; S2: for calves under 6 months old, the daily supplementary feeding amount is 0.5% of the calf's body weight; every night from 18:00 to 19:00 Supplementary feeding once, with drinking water.
experiment example 1
[0022] The various indicators of the yaks fed with the above formula were tested, and the results are as follows:
[0023] Table 1 Body weight gain and slaughter indicators from 1 to 5 years
[0024] age number of cattle 1 2 3 4 5 Live weight kg 10 111.04 179.31 211.69 253.21 305.78 Carcass weight kg 10 50.41 95.45 114.82 137.06 168.58 Net meat weight kg 10 32.65 71.71 87.85 96.39 117.20 Slaughter % 10 52.73 64.88 65.00 62.87 64.10 Net meat rate% 10 34.15 48.75 49.63 44.22 44.58 Bone to flesh ratio% 10 2.28 3.91 4.51 3.74 4.17 Eye muscle area cm 2
10 24.86 32.06 45.57 45.76 45.92
[0025] The yaks were fed with this formula, and their body weight gain and slaughter indicators were determined for 1-5 years. From the measurement results, adopting the supplementary feed ratio of the present invention to breed yaks for 3 years, its net meat rate, bone-to-meat ratio, and slaughter r...
experiment example 2
[0032] Adopt other proportioning different from embodiment 1 to carry out index comparative detection, what embodiment 1 corresponds to is following formula 9, and the result obtained is as follows:
[0033] Table 3 Ratio of different supplementary feeding formulas
[0034]
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