NIE Changlin, JIANG Jianyang, HAN Xianjie, SONG Chunyang. Digestible Lysine Requirement for Duroc×Luyan White Hybrid Weaner Piglets[J]. Chinese Journal of Animal Nutrition, 2013, 25(7): 1617-1623.
Digestible Lysine Requirement for Duroc×Luyan White Hybrid Weaner Piglets
NIE Changlin, JIANG Jianyang, HAN Xianjie, SONG Chunyang
College of Animal Science and Technology, Qingdao Agricultural University, Qingdao 266109, China
Abstract:The purpose of this test was to study the digestible lysine requirement for Duroc×Luyan White hybrid weaner piglets. Firstly, six Duroc×Luyan White piglets with an average body weight of (35.00±1.25) kg were selected,and according to the variety of experiment materials, 7 kinds of semi-purified dietary were formulated, which used to determine the ileal apparent amino acid digestibility of feeds by digestion experiment. Secondly, a total of 120 Duroc×Luyan White hybrid weaner piglets (half barrows and half sows) at (35±2) days of age with an average initial body weight of (9.13±1.61) kg were used in this test. According to the results of previous test and the dietary digestible lysine levels (0.90%, 1.00%, 1.10% and 1.20%), the piglets were divided into 4 groups, and each group had 6 replicates (3 barrows sties and 3 sow sties) with 5 piglets each. The results showed as follows: 1) for all experimental piglets,compared with 1.00% group, the feed/gain (F/G) in 0.90%,1.10% and 1.20% groups was increased by 3.24% (P<0.01), 4.24% (P>0.05) and 11.32% (P<0.01), and average daily gain (ADG) was decreased by 15.82% (P<0.01), 4.55% (P>0.05) and 9.74% (P<0.01). 2) For barrows and sows, compared with 0.90% and 1.20% groups, ADG in 1.00% group was significantly increased (P<0.05). Compared with 1.20% group, average daily feed intake (ADFI) in 1.00% group was significantly increased (P<0.05). For barrows, the F/G in 1.00% group was lower than that in 0.90% and 1.20% groups, but there was no significant difference for sows (P>0.05). 3) For all experimental piglets and sows, serum urea nitrogen content in 1.00% group was significantly lower than that in 1.20% group (P<0.05). For all experimental piglets, barrows and sows, the plasma total protein content had no significant difference among all groups (P>0.05). The results show that the digestible lysine requirement for Duroc×Luyan White hybrid weaner piglets (10 to 20 kg) is 1.00%, and sex factor has no significant effect on digestible lysine requirement.
Key words:
Duroc×Luyan White pigsweaner pigletsdigestible lysine
表3 不同可消化赖氨酸水平对杜×鲁烟白杂交断奶仔猪生长性能的影响
Table 3 Effects of different DLys levels on growth performance of Duroc×Luyan White Hybrid weaner piglets
项目 Items
可消化赖氨酸水平 DLys level/%
0.90
1.00
1.10
1.20
试验仔猪 Experimental piglets
平均日增重 ADG/g
363.00±33.88Bb
431.20±31.91Aa
411.60±36.13ABa
389.20±47.10Bb
平均日采食量 ADFI/g
726.80±36.91
760.10±33.59
755.70±43.35
690.70±38.57
料重比 F/G
2.001±0.011Aa
1.767±0.076Bb
1.842±0.011ABb
1.967±0.077Aa
阉公猪 Barrows
平均日增重 ADG/g
392.00±32.97b
444.20±30.32a
438.90±37.33a
379.10±47.15b
平均日采食量 ADFI/g
789.90±34.52a
774.40±35.62a
791.87±46.37a
738.20±39.18b
料重比 F/G
2.012±0.035a
1.744±0.126c
1.804±0.011bc
1.946±0.053ab
母猪 Sows
平均日增重 ADG/g
333.90±34.78b
418.30±33.50a
384.30±35.21ab
323.40±47.05b
平均日采食量 ADFI/g
663.60±35.73ab
745.70±28.36a
719.77±41.06ab
643.30±38.60b
料重比 F/G
1.989±0.024
1.790±0.037
1.881±0.011
1.987±0.059
同行数据肩标不同小写字母表示差异显著(P<0.05),不同大写字母表示差异极显著(P<0.01),相同小写字母或无字母表示差异不显著(P>0.05)。下表同。 In the same row,values with different small letter superscripts mean significant difference (P<0.05), and with different capital letter superscripts mean extremely significant difference (P<0.01), while with the same or no letter superscripts mean no significant difference (P>0.05). The same as below.
表3 不同可消化赖氨酸水平对杜×鲁烟白杂交断奶仔猪生长性能的影响
Table 3 Effects of different DLys levels on growth performance of Duroc×Luyan White Hybrid weaner piglets
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