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在母豬妊娠、哺乳期和其仔豬斷奶后保育階段飼喂活酵母添加物對仔豬生長性能和營養(yǎng)物質(zhì)消化率的影響
發(fā)布單位:天津瑞孚農(nóng)牧科技集團(tuán)有限公司
查看次數(shù)：9302
時(shí)間：2019-05-15
Hang Lu，Pete Wilcock，Olayiwola Adeola，Kolapo M Ajuwon
翻譯：劉素利
本研究的目的是確定在母豬妊娠期和泌乳期以及其后代保育階段飼喂活酵母（LY）添加物，對其后代斷奶后生長性能和營養(yǎng)物質(zhì)消化率的影響。選取40頭母豬，根據(jù)胎次和預(yù)產(chǎn)期，隨機(jī)分為兩個(gè)日糧處理組（對照組和LY組）；記錄仔豬初生重、斷奶重和窩仔數(shù)、死亡率等數(shù)據(jù)。斷奶后，128頭混合性別的仔豬（每個(gè)母豬試驗(yàn)組選取64頭）根據(jù)來源和初始體重各自隨機(jī)分為兩個(gè)試驗(yàn)組（對照組和LY組），每圈4頭豬（每個(gè)處理32頭豬），進(jìn)行為期6周的生長性能試驗(yàn)。在此生長性能試驗(yàn)結(jié)束時(shí)，每圈選擇2頭豬只轉(zhuǎn)移到代謝籠里采集糞樣，進(jìn)行代謝試驗(yàn)。
試驗(yàn)數(shù)據(jù)顯示，在母豬日糧中添加LY組：其仔豬初生重、斷奶重和窩產(chǎn)仔數(shù)和死亡率無顯著變化；在仔豬斷奶后21d和42d時(shí)，豬只體重（BW）顯著增加；總體平均日增重（ADG）顯著升高（P＜0.05）。在母豬和仔豬保育日糧中均添加LY組，仔豬整體平均日采食量（ADFI）和飼料轉(zhuǎn)化率（G：F）無顯著差異。在保育料中添加LY，改善了保育階段仔豬對飼料干物質(zhì)（DM）、總能（GE）和磷（P）的表觀總消化率（ATTD）。在母豬料中添加LY，其仔豬對飼料GE的ATTD也同樣增加了。
總而言之，在母豬妊娠、哺乳階段和仔豬保育階段日糧中添加LY，可以改善其后代仔豬對飼料DM、GE和P的ATTD及ADG，而且可能對其一生的生長性能都有改善作用。
Effect of live yeast supplementation to gestating sows and nursery piglets on postweaning growth performance and nutrient digestibility
The objectives of the current study were to determine the effects of live yeast (LY) supplementation of sows during gestation and lactation and to determine the effects of supplementation of their offspring after weaning on growth performance and nutrient digestibility. A total of 40 sows were assigned to two dietary treatments (control vs. LY) based on parity and expected farrowing date. Birth weight, weaning weight, litter size and mortality were measured. After weaning, 128 mixed-sex piglets (64 from each sow treatment) were selected based on their source litter and initial BW, and randomly assigned to 2 treatments (control or LY) at 4 pigs per pen (total of 32 pigs per treatment) for a 6-wk growth performance study. At the end of the growth performance trial, 2 barrows from each pen were moved to metabolism crates for total fecal collection for a digestibility trial. Addition of LY to the sow diets had no effects on birth weight, weaning weight, litter size at birth and mortality. Piglets had greater body weight (BW) on d 21 and 42 postweaning when sows were fed diets supplemented with LY, and overall average daily gain (ADG) was greater in piglets from sows that received LY (P < 0.05). There was no effect of sow and nursery diets on overall average daily feed intake (ADFI) and gain : feed intake (G:F). Supplementing diets with LY during the nursery phase increased apparent total tract digestibility (ATTD) of dry matter (DM), gross energy (GE) and phosphorus (P) during this phase. The ATTD of GE was also greater in piglets from sows that received LY. In conclusion, LY supplementation of diets during gestation and lactation and during the nursery phase could increase ADG and ATTD of DM, GE and P in the offspring, and this may lead to a greater lifetime growth performance in the offspring.
轉(zhuǎn)自公眾號(hào)：豬營養(yǎng)國際論壇
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