Effects of Dietary Lysine Levels on Production Performance and Milk Composition of High-Producing Sows during Lactation
Modern genotype sows require enhanced nutrition because of their larger body size and higher reproductive performance than 20 years ago. This study aimed to evaluate the effect of dietary Lys on the lactating of primiparous sows and the second lactating period to minimize sow body weight (BW) loss a...
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doaj-7ea7cc3062c34ca1bd880e0876d23f822020-11-25T03:52:46ZengMDPI AGAnimals2076-26152020-10-01101947194710.3390/ani10111947Effects of Dietary Lysine Levels on Production Performance and Milk Composition of High-Producing Sows during LactationBo Liu0Yuanfei Zhou1Xiong Xia2Chao Wang3Hongkui Wei4Jian Peng5Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan 430070, ChinaDepartment of Animal Nutrition and Feed Science, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan 430070, ChinaDepartment of Animal Nutrition and Feed Science, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan 430070, ChinaDepartment of Animal Nutrition and Feed Science, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan 430070, ChinaDepartment of Animal Nutrition and Feed Science, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan 430070, ChinaDepartment of Animal Nutrition and Feed Science, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan 430070, ChinaModern genotype sows require enhanced nutrition because of their larger body size and higher reproductive performance than 20 years ago. This study aimed to evaluate the effect of dietary Lys on the lactating of primiparous sows and the second lactating period to minimize sow body weight (BW) loss and maximize the survival rate of piglets and litter gain. A total of 160 primiparous Yorkshire sows were randomly allotted to one of four experimental lactation diets. Formulated to contain 0.84%, 0.94%, 1.04%, and 1.14% standardized ileal digestibility (SID) Lys and balanced in Met, Thr, Trp, and Val. No dietary effects were found on sow body weight (BW) and backfat thickness (BF) change and feed intake during lactation. However, the Lys intake (<i>p</i> = 0.04) of lactation increased linearly with increasing dietary Lys levels. In addition, 1.14% Lys for primiparous sow and 0.94% Lys for second parity sow during lactation increased the survival rate (<i>p</i> = 0.04), weight (<i>p</i> = 0.04), and ADG of piglets at d 21 (<i>p</i> = 0.03). The dietary Lys level did not affect colostrum compositions. However, the dry matter (<i>p</i> = 0.04) and protein (<i>p</i> = 0.03) in milk increased linearly with the increase in dietary Lys levels, whereas moisture decreased linearly (<i>p</i> = 0.05). The level of plasma urea nitrogen (PUN) also increased at d 21 of weaning (<i>p</i> = 0.04). These results indicate that high-yielding lactating sows required 1.14% SID Lys during parity 1, and 0.94% SID Lys during parity 2 to maximize the survival rate of piglets and litter gain, respectively. Moreover, the effects of dietary amino acid (AA) on the production performance of weaning pigs could be mediated through milk composition change.https://www.mdpi.com/2076-2615/10/11/1947lysinelactationreproduction performanceprimiparous sows |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Bo Liu Yuanfei Zhou Xiong Xia Chao Wang Hongkui Wei Jian Peng |
spellingShingle |
Bo Liu Yuanfei Zhou Xiong Xia Chao Wang Hongkui Wei Jian Peng Effects of Dietary Lysine Levels on Production Performance and Milk Composition of High-Producing Sows during Lactation Animals lysine lactation reproduction performance primiparous sows |
author_facet |
Bo Liu Yuanfei Zhou Xiong Xia Chao Wang Hongkui Wei Jian Peng |
author_sort |
Bo Liu |
title |
Effects of Dietary Lysine Levels on Production Performance and Milk Composition of High-Producing Sows during Lactation |
title_short |
Effects of Dietary Lysine Levels on Production Performance and Milk Composition of High-Producing Sows during Lactation |
title_full |
Effects of Dietary Lysine Levels on Production Performance and Milk Composition of High-Producing Sows during Lactation |
title_fullStr |
Effects of Dietary Lysine Levels on Production Performance and Milk Composition of High-Producing Sows during Lactation |
title_full_unstemmed |
Effects of Dietary Lysine Levels on Production Performance and Milk Composition of High-Producing Sows during Lactation |
title_sort |
effects of dietary lysine levels on production performance and milk composition of high-producing sows during lactation |
publisher |
MDPI AG |
series |
Animals |
issn |
2076-2615 |
publishDate |
2020-10-01 |
description |
Modern genotype sows require enhanced nutrition because of their larger body size and higher reproductive performance than 20 years ago. This study aimed to evaluate the effect of dietary Lys on the lactating of primiparous sows and the second lactating period to minimize sow body weight (BW) loss and maximize the survival rate of piglets and litter gain. A total of 160 primiparous Yorkshire sows were randomly allotted to one of four experimental lactation diets. Formulated to contain 0.84%, 0.94%, 1.04%, and 1.14% standardized ileal digestibility (SID) Lys and balanced in Met, Thr, Trp, and Val. No dietary effects were found on sow body weight (BW) and backfat thickness (BF) change and feed intake during lactation. However, the Lys intake (<i>p</i> = 0.04) of lactation increased linearly with increasing dietary Lys levels. In addition, 1.14% Lys for primiparous sow and 0.94% Lys for second parity sow during lactation increased the survival rate (<i>p</i> = 0.04), weight (<i>p</i> = 0.04), and ADG of piglets at d 21 (<i>p</i> = 0.03). The dietary Lys level did not affect colostrum compositions. However, the dry matter (<i>p</i> = 0.04) and protein (<i>p</i> = 0.03) in milk increased linearly with the increase in dietary Lys levels, whereas moisture decreased linearly (<i>p</i> = 0.05). The level of plasma urea nitrogen (PUN) also increased at d 21 of weaning (<i>p</i> = 0.04). These results indicate that high-yielding lactating sows required 1.14% SID Lys during parity 1, and 0.94% SID Lys during parity 2 to maximize the survival rate of piglets and litter gain, respectively. Moreover, the effects of dietary amino acid (AA) on the production performance of weaning pigs could be mediated through milk composition change. |
topic |
lysine lactation reproduction performance primiparous sows |
url |
https://www.mdpi.com/2076-2615/10/11/1947 |
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