本文選題：榮昌母豬 + SID　； 參考：《西南大學(xué)》2016年碩士論文

【摘要】：本研究將母豬妊娠期分成妊娠1~90d和妊娠91~110d兩個階段,通過兩個試驗來研究榮昌母豬妊娠期日糧適宜標(biāo)準(zhǔn)回腸可消化賴氨酸的需要量。試驗一:為研究榮昌初產(chǎn)母豬妊娠1~90d日糧標(biāo)準(zhǔn)回腸可消化賴氨酸的需要,選取50頭后備榮昌母豬按體重隨機(jī)分為5個處理,每個處理10頭,飼喂SID Lys水平分別為0.35%、0.45%、0.55%、0.65%、0.75%,代謝能水平為11.75MJ/kg的日糧;母豬從妊娠91d開始到哺乳期結(jié)束飼喂相同日糧。試驗期從母豬配種至仔豬斷奶,分別在母豬配種時、妊娠90d、分娩時(分娩后24h內(nèi))、斷奶時測定母豬的體重與背膘厚,母豬分娩時記錄產(chǎn)仔數(shù)、產(chǎn)活仔數(shù)、仔豬初生重等,測定母豬妊娠90d時的血糖、血清總蛋白、血清尿素氮、胰島素、類胰島素樣生長因子-I、孕酮、催乳素以及哺乳期仔豬的血糖、總蛋白、尿素氮。結(jié)果表明:母豬妊娠1~90d體重及背膘厚隨日糧SID Lys增加各處理組在數(shù)值上呈現(xiàn)先升高后下降的趨勢,但沒有達(dá)到顯著水平(P0.05);妊娠90d各處理組血清總蛋白、血糖、甘油三酯、總膽固醇的值隨著日糧SID Lys水平的增加呈現(xiàn)出先升高后下降的趨勢,但沒有達(dá)到顯著水平(P0.05)。妊娠90d各處理組血清尿素氮含量隨著日糧SID Lys水平的增加呈現(xiàn)出先下降后上升的趨勢,且0.55%組和0.65%組顯著低于0.35%組(0.01P0.05),妊娠90d血清尿素氮含量(Y)與日糧SID Lys水平(X)之間具有二次曲線的關(guān)系:Y=12.571X2-14.889X+6.9424(R2=0.872),分析得出適宜SID Lys水平為0.592%。妊娠90d血清中胰島素、類胰島素樣生長因子-I、孕酮、催乳素的含量都隨著日糧SID Lys含量的增加呈現(xiàn)出先升高后下降的趨勢。0.55%組和0.65%組的胰島素含量顯著高于0.75%組(0.01P0.05);0.55%組的類胰島素樣生長因子-I的含量顯著高于0.75%組(0.01P0.05);孕酮含量0.45%組顯著高于0.65%組和0.75%組(0.01P0.05);催乳素0.55%組顯著高于0.35%組(0.01P0.05)。母豬總產(chǎn)仔數(shù)隨著日糧SID Lys含量的增加呈現(xiàn)出先升高后下降的趨勢,但未達(dá)到顯著水平(P0.05)。仔豬初生重隨著日糧中SID Lys含量的增加呈現(xiàn)出先升高后下降的趨勢,且0.55%組顯著高于其余各組(0.01p0.05)。仔豬28d血清中血清尿素氮的含量隨著日糧sidlys水平的增加呈現(xiàn)出先下降后上升的趨勢,0.45%組和0.55%組顯著低于其余各組(0.01p0.05),且0.55%組含量最低。綜合分析母豬妊娠90d血清尿素氮、胰島素、仔豬哺乳期增重相關(guān)指標(biāo)的二次曲線得出:本試驗條件下,榮昌母豬妊娠1~90d日糧代謝能水平為11.75mj/kg時,sidlys水平為0.546%~0.592%具有最佳的繁殖性能。試驗二:為研究榮昌母豬妊娠91~110d日糧適宜的標(biāo)準(zhǔn)回腸可消化賴氨酸適宜需要量,選取二胎次、體重相近、血緣相近的榮昌母豬55頭按體重隨機(jī)區(qū)分為5個處理,每個處理11頭,飼喂sidlys水平分別為0.50%、0.60%、0.70%、0.80%、0.90%,代謝能為12.50mj/kg、粗蛋白為12.60%的日糧。配種至妊娠90d及哺乳期飼喂相同日糧。試驗期從妊娠90d開始至仔豬斷奶結(jié)束,測定榮昌母豬妊娠90d、妊娠110d、分娩時(分娩后24h內(nèi))、斷奶時的體重及背膘厚、產(chǎn)仔數(shù)、產(chǎn)活仔數(shù)、仔豬初生重、仔豬14日齡體重、仔豬28日齡體重,母豬妊娠110d的血糖、血清尿素氮、血清總蛋白、胰島素、類胰島素樣生長因子-i、催乳素以及妊娠110d母豬血清游離氨基酸。結(jié)果表明:母豬妊娠91~110d背膘厚變化隨著日糧sidlys水平增加呈先出先升高后下降的趨勢,0.70%組顯著高于0.50%(0.01p0.05);妊娠110d母豬血清尿素氮及血糖含量隨著日糧sidlys水平增加呈現(xiàn)出二次曲線變化。0.70%組血糖含量最高,顯著高于其他各處理組(0.01p0.05);血清尿素氮0.80%組含量達(dá)到最低,且妊娠110d母豬血清血清尿素氮含量(y)與日糧sidlys水平(x)之間的關(guān)系為y=16.714x2-24.16x+10.496(r2=0.935),分析得出適宜sidlys水平為0.723%;妊娠110d胰島素與類胰島素樣生長因子-i含量隨著日糧sidlys含量的增加呈現(xiàn)出先升高后下降的趨勢,且胰島素0.75%組含量達(dá)到最大,顯著高于0.50%組(0.01p0.05);妊娠110d母豬血清中游離賴氨酸含量0.85%組顯著高于0.50%組(0.01p0.05),血清游離賴氨酸含量隨日糧sidlys含量的增加呈現(xiàn)出先升高后下降的趨勢;妊娠后期日糧sidlys水平對仔豬初生重有顯著影響(0.01p0.05),仔豬初生重隨著日糧中sidlys含量的增加呈上升趨勢;哺乳仔豬1~14d體增重0.70%組顯著高于0.80%和0.90%組。哺乳期仔豬14d、28d血清中尿素氮含量隨著日糧中sidlys含量的增加呈先上升后下降趨勢;母豬斷奶至發(fā)情間隔雖沒有達(dá)到顯著水平(p0.05),但在數(shù)值上隨著日糧sidlys水平的增加呈現(xiàn)出先下降后上升的趨勢,0.80%組斷奶至發(fā)情間隔天數(shù)最少。綜合分析母豬妊娠期血清尿素氮、母豬妊娠后期體重變化、胰島素、仔豬1~14d體增重相關(guān)指標(biāo)的二次曲線分析得出:本試驗條件下,當(dāng)榮昌母豬妊娠91~110d日糧代謝能為12.50mj/kg時,sidlys水平為0.655%~0.723%具有最佳的繁殖性能。
[Abstract]:In this study, the sow pregnancy period was divided into two stages of pregnancy 1~90d and pregnancy 91~110d, and two experiments were carried out to study the requirement of the suitable standard ileum lysine for Rongchang sows during pregnancy. Test 1: To study the needs of the standard ileum for the standard ileum in the gestation of pregnant sows in Rongchang, and to select 50 Rongchang sows. 5 treatments were randomly divided into 5 treatments, each treated with 10 heads, and the levels of SID Lys were 0.35%, 0.45%, 0.55%, 0.65%, 0.75%, and the metabolic energy level was on the diet. The sows were fed from the pregnancy 91d to the end of the lactation period. In post 24h), the weight and back fat thickness of sows were measured during weaning, the number of births, the number of live births, the birth weight of piglets during childbirth were recorded, and the blood sugar, serum total protein, serum total protein, serum urea nitrogen, insulin, insulin like growth factor -I, progesterone, prolactin and lactating piglets, the blood sugar, total protein, urea nitrogen were measured. The 1~90d weight and back fat thickness of sow's gestation were increased first and then decreased with the increase of SID Lys in the diet, but did not reach a significant level (P0.05). The value of serum total protein, blood sugar, triglyceride and total cholesterol in the treatment groups of pregnancy 90d increased first and then decreased with the increase of SID Lys level in the diet. But there was no significant level (P0.05). The serum urea nitrogen content in each treatment group of pregnancy 90d decreased first and then increased with the increase of SID Lys level in the diet, and the 0.55% and 0.65% groups were significantly lower than 0.35% groups (0.01P0.05), the relationship between the serum urea nitrogen content of pregnancy 90d (Y) and the SID Lys level (X) of the diet was two times: Y=12 .571X2-14.889X+6.9424 (R2=0.872), it was found that the appropriate SID Lys level was insulin in 0.592%. pregnancy 90d serum, and the content of insulin like growth factor -I, progesterone and prolactin all increased and then decreased with the increase of SID Lys content in the diet, and the insulin content in the.0.55% and 0.65% groups was significantly higher than that of the 0.75% groups (0.01P0.05). The content of insulin like growth factor -I in the 0.55% groups was significantly higher than that in the 0.75% group (0.01P0.05), the progesterone content in 0.45% groups was significantly higher than that in the 0.65% and 0.75% groups (0.01P0.05), and the prolactin 0.55% group was significantly higher than the 0.35% group (0.01P0.05). The primary weight of the piglets increased with the increase of SID Lys content in the diet first and then decreased, and the 0.55% groups were significantly higher than the other groups (0.01p0.05). The content of serum urea nitrogen in the 28d serum of the piglets showed a tendency to descend first and then increase with the increase of sidlys level in the diet, and the content of the serum urea nitrogen in 28d serum of piglets showed a trend of descending and then rising, and the 0.45% and 0.55% groups were significantly lower than those in the 0.55% groups. The remaining groups (0.01p0.05), and the 0.55% groups were the lowest. A comprehensive analysis of the two curves of serum urea nitrogen, insulin and piglet feeding weight gain in sow pregnancy showed that, under the conditions of this test, the metabolic energy level of 1~90d diet in Rongchang sows was 11.75mj/kg, and sidlys was 0.546%~0.592% with the best reproductive performance. The test was two: In order to study the suitable standard of the standard ileum for the standard ileum of Rongchang sow pregnancy 91~110d, the 55 heads of Rongchang sows with similar body weight were randomly divided into 5 treatments, each treated with 11 heads, and the level of feeding sidlys was 0.50%, 0.60%, 0.70%, 0.80%, 0.90% respectively, and the metabolic energy was 12.50mj/kg, crude protein. For 12.60% of the diet, the same diet was fed to pregnancy 90d and lactation period. The test period from pregnancy 90d to weanling ended, the pregnancy 90d, pregnancy 110D, birth (24h after birth 24h), weaning weight and back fat thickness, litter size, birth weight, piglets' birth weight, piglet's 14 day weight, piglet's 28 day age weight, mother body weight, mother's 28 day weight, mother body weight, mother body weight, mother body weight, mother body weight, and mother weight of piglets 110D blood sugar, serum urea nitrogen, serum total protein, insulin, insulin like growth factor -i, prolactin and serum free amino acids in gestation 110D sows. The results showed that the change of 91~110d back fat thickness of sow pregnancy increased first and then decreased with the increase of sidlys level in the diet, which was significantly higher than 0.50% (0.01p0.05) in the 0.70% group. The serum urea nitrogen and blood sugar content in the serum of pregnant 110D sows showed two curves with the increase of sidlys level in the diet. The blood sugar content in group.0.70% was highest, which was significantly higher than that of other treatment groups (0.01p0.05); the content of serum urea nitrogen 0.80% groups reached the lowest level, and the serum serum albumin urea nitrogen content (y) and dietary sidlys level (x) in the serum of 110D sows of pregnancy were between. The relationship was y=16.714x2-24.16x+10.496 (r2=0.935), and the suitable level of sidlys was 0.723%. The content of 110D insulin and insulin-like growth factor -i in pregnancy increased first and then decreased with the increase of dietary sidlys content, and the content of insulin 0.75% groups reached the maximum, which was significantly higher than that of the 0.50% groups (0.01p0.05); pregnancy 110D sows. The content of free lysine in the 0.85% groups was significantly higher than that of the 0.50% groups (0.01p0.05). The content of free lysine in serum showed a tendency to increase first and then decrease with the increase of sidlys content in the diet. The level of sidlys in the diet of late pregnancy had a significant effect on the newborn weight of piglets (0.01p0.05), and the initial weight of the piglets increased with the increase of sidlys content in the diet. The 0.70% groups of 1~14d body weight gain of suckling piglets were significantly higher than that of 0.80% and 0.90% groups. The content of urea nitrogen in 14d and 28d serum of suckling piglets rose first and then decreased with the increase of sidlys content in the diet; the sow weaned to the estrus interval did not reach the significant level (P0.05), but in the numerical value increased with the increase of the level of sidlys in the diet. The number of weaning to estrus interval in the 0.80% groups was the least. The two curves of serum urea nitrogen, body weight change, insulin and 1~14d body weight gain of piglets during pregnancy were analyzed by two curves. The results were as follows: when the diet of Rongchang sows was metabolizable to 91~110d, sidlys The level of 0.655%~0.723% has the best reproductive performance.

【學(xué)位授予單位】：西南大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2016
【分類號】：S828

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