Sow litter size is increased in the subsequent parity when lactating sows are fed diets containing n-3 fatty acids from fish oil1

2011 ◽  
Vol 89 (9) ◽  
pp. 2731-2738 ◽  
Author(s):  
R. J. Smits ◽  
B. G. Luxford ◽  
M. Mitchell ◽  
M. B. Nottle
Keyword(s):  
Fatty Acids ◽  
Litter Size ◽  
Lactating Sows

241 Evaluation of a DFM and OA, Alone or in Combination, on Sow Reproductive and Litter Growth Performance

2021 ◽  
Vol 99 (Supplement_1) ◽  
pp. 137-138
Author(s):  
Morgan T Thayer ◽  
Jacob A Richert ◽  
Karissa N Rulon ◽  
Matthew D Asmus ◽  
Daniel B Jones ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Growth Performance ◽  
Bacillus Licheniformis ◽  
Reproductive Performance ◽  
Body Weight Loss ◽  
Short Chain Fatty Acids ◽  
Lactating Sows ◽  
Sow Lactation ◽  
Dietary Treatments ◽  
Larger Sample

Abstract Forty-seven sows and their progeny were used to determine if feeding gestating and lactating sows a Bacillus licheniformis direct-fed microbial (DFM), an organic acid blend of medium chain and short chain fatty acids (OA), or in combination improves sow lactation feed and water intake, litter growth, and subsequent reproductive performance. On approximately d80 of gestation, sows were fed one of four diets in a 2 x 2 factorial design: 1) gestation control (CON; 0.55% SID Lysine), 2) CON with DFM (1.6x109 CFU/kg of complete feed), 3) CON with 0.4% OA, 4) CON with both DFM and OA. Dietary treatments were also fed throughout lactation (1.00% SID Lysine) starting on approximately d112 of gestation when sows entered farrowing facility. There was a tendency (P = 0.079) for DFM to decrease the amount of sow body weight loss in lactation by approximately 6% compared to sows not consuming the DFM, likely related to DFM sows numerically (P = 0.124) consuming 8.4% more feed during d7-14 of lactation. Sows fed the OA diets had fewer mummies/litter (P = 0.038) compared to diets not containing OA. Sows fed diets with the DFM gave birth to lighter pigs born alive (P = 0.003) compared to non-DFM fed sows, and a tendency for an interaction (P = 0.092) existed where feeding OA+DFM lessened the decrease in born alive BW. There was an interaction tendency (P = 0.133) where sows fed DFM returned to estrus 22 hours sooner than CON, but only 8 hours sooner when sows were fed the OA+DFM diet. In conclusion, feeding a Bacillus licheniformis DFM to sows may decrease pig born alive weight but reduce sow BW loss through 6.4% more lactation feed intake, quickening the return to estrus. Feeding the OA alone or in combination did not improve sow reproductive and litter growth performance in this study, and may require a larger sample size.

scholarly journals An Analysis of Culling Patterns during the Breeding Cycle and Lifetime Production from the Aspect of Culling Reasons for Gilts and Sows in Southwest China

Animals ◽  
2019 ◽  
Vol 9 (4) ◽  
pp. 160 ◽  
Author(s):  
Chao Wang ◽  
Yinghui Wu ◽  
Dingming Shu ◽  
Hongkui Wei ◽  
Yuanfei Zhou ◽  
...  
Keyword(s):  
Milk Production ◽  
Litter Size ◽  
Reproductive System ◽  
Southwest China ◽  
Breeding Cycle ◽  
Common Disease ◽  
System Disease ◽  
Lactating Sows

To investigate culling patterns during the breeding cycle and lifetime production associated with culling reasons, 19,471 culling records were collected in southwest China. Lifetime pigs born alive (LPBA) and parity for culling reasons, and reason distribution at different parities and breeding cycle were analyzed. Sows culled for stress and death (SD), lameness (LA), common disease (CD), not being pregnant, return to estrus, and abortion (NP) had fewer than 20 LPBA (p < 0.05). Gilts were mainly culled for anestrus beyond nine months (AB9), CD, and LA, while weaned sows were culled for reproductive system disease (RS), CD, and anestrus beyond seven days (p < 0.0033). Gestating sows were mainly culled for NP, CD, and SD, while lactating sows were mainly culled for low or no milk production (NM), poor litter size, and CD (p < 0.0033). Moreover, sows were mainly culled at parity 0, 1, and 2 (p < 0.0024). Besides CD and RS, LA and NP were the primary reasons for parity 1 and 2 culls, respectively. In conclusion, SD, LA, CD, and NP sharply decrease sow lifetime production. AB9, RS, NP, and NM mainly occurred in gilts, weaned, gestating, and lactating sows, respectively. Low parity sows had a higher risk of CD, RS, LA, and NP.

scholarly journals 275 Feeding a whole-cell inactivated Pichia guilliermondi yeast to gestating and lactating sows in a commercial production system

2020 ◽  
Vol 98 (Supplement_3) ◽  
pp. 99-100
Author(s):  
Morgan T Thayer ◽  
Ricardo M Garcia ◽  
Alan W Duttlinger ◽  
Julie F Mahoney ◽  
Allan P Schinckel ◽  
...  
Keyword(s):  
Body Weight ◽  
Litter Size ◽  
Production System ◽  
Control Diet ◽  
Commercial Production ◽  
Animal Nutrition ◽  
Whole Cell ◽  
Lactating Sows ◽  
Yeast Product ◽  
Dietary Treatments

Abstract A total of 606 sows (PIC 1050) and their progeny (PIC 1050×280) were used to determine if feeding gestating and lactating sows a proprietary strain of Pichia guilliermondi as a whole-cell inactivated yeast product (WCY; CitriStim, ADM Animal Nutrition, Quincy, IL) improves sow and litter performance in a commercial production system. Once confirmed pregnant at d 35 post-breeding pregnancy check, sows were fed either a basal gestation control (CON) diet (0.55% SID Lysine) or the control diet fortified with 0.15% (1.36 kg/ton) of the WCY replacing corn in the CON diet. Dietary treatments were also fed in lactation (1.05% SID Lysine) once sows were moved into farrowing crates on approximately d 112 of gestation until weaning. Sows supplemented with WCY in gestation and lactation had a greater number of total born piglets by 0.45 pigs (P=0.040), born alive (P&lt; 0.04), heavier born alive litter weight (P&lt; 0.001), and greater post cross-foster litter size (P&lt; 0.001) compared to CON fed sows. Litter size at weaning was increased by 0.54 pigs when sows were fed WCY compared to CON (P&lt; 0.001). However, the average piglet weaning weights from CON fed sows were heavier by 0.35 kg compared to WCY (P&lt; 0.001). This increase in body weight of piglets from CON fed sows is partially explained by their 0.93 days longer lactation (P&lt; 0.001), and may also be due to the smaller litter size nursed throughout lactation. The percent of litters treated for scours decreased from 38.3% to 14.2% when sows were fed WCY (P&lt; 0.001). The distribution of birth weights by body weight range was not different (P=0.2461) between treatments. In conclusion, feeding gestating and lactating sows a proprietary strain of Pichia guilliermondi as a whole-cell inactivated yeast product increased the number of piglets born and number weaned as well as decreased the prevalence of scours during lactation.

The effects of altered suckling intensity, boar exposure in lactation and gonadotropins on endocrine changes, fertility and the incidence of lactational oestrus in multiparous sows

1995 ◽  
Vol 60 (3) ◽  
pp. 485-492 ◽  
Author(s):  
A. N. Costa ◽  
M. A. Varley
Keyword(s):  
Litter Size ◽  
Steroid Hormone ◽  
Post Partum ◽  
Significant Treatment ◽  
Plasma Progesterone ◽  
Peripheral Plasma ◽  
Lactating Sows ◽  
Low Levels ◽  
Experimental Treatments

AbstractOne of the more promising techniques for the improvement of sow productivity has been the use of partial weaning or the separation of the sow and litter for periods of between 3 to 12 h/day towards the end of lactation. The purpose of the present study was to examine changes in steroid hormone concentrations, oestrus and fertility responses in lactating sows subjected to altered sucking, boar exposure and gonadotropins in mid lactation and at weaning. Thirty-two crossbred sows were allocated at random to one of four experimental treatments. Treatment 1 sows (no. = 8) were separated from their respective litters for 3 h/day from 12 days post partum through until weaning which was carried out at 21 days post partum. Treatment 1 sows were also given in-pen boar exposure for 1 h/day between day 12 post partum and weaning. Treatment 2 sows (no. = 8) were given the same protocol of litter separation (LS) and boar exposure (BE) as in treatment 1 and they were also given a combination of gonadotropins (Gn) on day 17 of lactation. Treatment 3 sows (no. = 8) were given LS + BE as above and the sows were injected with Gn on the day of weaning. Treatment 4 sows were controls given no LS, BE or Gn (no. = 8). During lactation, treatment 1 sows exhibited significantly (P < 0·05) reduced progesterone concentrations compared with treatment 2 sows. There were no other significant effects of treatment for any of the periods considered. The separation of sows from their piglets with or without gonadotropic treatment did not result in lactational oestrus in any treated sows. No significant treatment differences were found in the subsequent litter size (piglets born alive or total number of piglets). In conclusion, the present results have demonstrated no significant effects of LS, BE and Gn treatment during lactation on sow and litter performance. This was associated with low levels of peripheral plasma progesterone in all lactating sows.

The effect of weaning at 10, 25 or 40 days on the reproductive performance of sows from the first to the fifth parity

1979 ◽  
Vol 92 (2) ◽  
pp. 449-456 ◽  
Author(s):  
N. Walker ◽  
D. Watt ◽  
A. S. MacLeod ◽  
C. L. Johnson ◽  
T. G. Boaz ◽  
...  
Keyword(s):  
Litter Size ◽  
Reproductive Performance ◽  
Day Treatment ◽  
Live Weight ◽  
Lactating Sows ◽  
Herd Structure ◽  
Natal Mortality

SummaryA total of 146 nulliparous gilts at two centres were assigned to lactation lengths of 10, 25 or 40 days and maintained on the same weaning regime for up to five parities.The interval between weaning and conception tended to be shorter for the 40-day treatment with little difference between the 10- and 25-day treatments. The data from all parities were pooled on the basis of an assumed herd structure giving the number of litters produced per sow per year aa 2·63, 2·37 and 2·18 for the 10-, 25- and 40-day treatments respectively.The number of pigs born alive per litter remained more or less static with successive parities on the 10-day treatment but increased on the 40-day treatment with differences between treatment s reaching or approaching significance in parities 4 and 5. Although this trend was reflected in the number of pigs weane d per litter, the differences between lactation treatments were non-significant as a result of higher post-natal mortality in the larger litters of the longer lactating sows.Consequently sows on the 10-day treatment reared the highest number of pigs per year, 22·4 compared with 20·2 and 19·8 for 25- and 40-day lactations respectively.Data are also presented on changes in sow live weight.A high culling rate and an extended interval betwee n weaning and conception were experienced at one centre in parity 1. The possible reasons and effect on subsequent litter size are discussed.

scholarly journals 280 Effects of metabolizable energy and standardized ileal digestible lysine levels on lactating sow and litter performance

2020 ◽  
Vol 98 (Supplement_3) ◽  
pp. 95-96
Author(s):  
Gustavo Silva ◽  
Robyn Thompson ◽  
Brandon Knopf ◽  
Laura L Greiner ◽  
Jose A Soto ◽  
...  
Keyword(s):  
Litter Size ◽  
Feed Intake ◽  
Metabolizable Energy ◽  
Experimental Unit ◽  
Main Effect ◽  
Lactating Sows ◽  
Dietary Treatments ◽  
Daily Gain ◽  
Lactating Sow ◽  
Standardized Ileal Digestible Lysine

Abstract The objective was to determine the effects of metabolizable energy (ME) and standardized ileal digestible (SID) lysine (Lys) levels on lactating sows and litter performance. A total of 600 sows (Camborough; PIC, Hendersonville, TN) were blocked by parity (P1, P2, P3+) on d 112 of gestation and allotted to 1 of 6 treatments arranged in a 2 x 3 factorial with the main effect of ME (3.2 and 3.4 Mcal/kg) and SID Lys (0.70, 0.85, and 1.00 %). Corn-soybean meal-based diets were fed from farrowing until weaning (d 21±2.3). Litters were cross-fostered until 48-h after farrowing to equalize litter size. Sows were weighed at d 112 of gestation and at weaning. Litter size and weight were collected at 24-h post-farrow and weaning. Daily feed intake was recorded from 48-h post-farrow until weaning. Data were analyzed using the GLIMMIX procedure of SAS with sow as the experimental unit. There was no evidence of interaction between ME and SID Lys for any response criteria. There was no evidence for an ME effect on sow performance. There was a quadratic effect (P&lt; 0.05) of SID Lys on sow average daily feed intake, with the greatest intake at 0.85% SID Lys. Increasing SID Lys levels increased sow BW change (linear, P&lt; 0.05). Litters from sows fed 3.4 Mcal of ME/kg had greater (P&lt; 0.05) daily gain compared to those from sows fed 3.2 Mcal of ME/kg. Increasing SID Lys levels increased (linear, P&lt; 0.05) litter weight at weaning and piglet daily gain. Wean-to-estrus interval, percentage of sows bred after weaning, total born on the subsequent parity, litter size at weaning, and percent of piglet removals were not influenced by dietary treatments. In summary, increasing ME levels did not affect sow performance, but improved litter and piglet daily gain. Increasing SID Lys levels improved both litter and sow performance.

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