164 Feeding a Diet with a Near Optimal Amino Acid Profile Improves Energy Utilization for Milk Production in Lactating Sows.

2018 ◽  
Vol 96 (suppl_2) ◽  
pp. 87-87
Author(s):  
S Zhang ◽  
J S Johnson ◽  
M Qiao ◽  
J Liesman ◽  
N L Trottier
Keyword(s):  
Amino Acid ◽  
Milk Production ◽  
Amino Acid Profile ◽  
Energy Utilization ◽  
Lactating Sows

scholarly journals PSVII-27 Effects of dietary near ideal amino acid profile on amino acid utilization efficiency for milk production in sows under thermoneutral or heat stress conditions

2019 ◽  
Vol 97 (Supplement_3) ◽  
pp. 358-358
Author(s):  
Sai Zhang ◽  
Jay Johnson ◽  
Nathalie Trottier
Keyword(s):  
Heat Stress ◽  
Amino Acid ◽  
Milk Production ◽  
Milk Yield ◽  
Amino Acid Profile ◽  
Utilization Efficiency ◽  
Body Protein ◽  
Amino Acid Utilization ◽  
Lactating Sows ◽  
Protein Mobilization

Abstract The objective was to estimate essential AA (EAA) utilization efficiency for milk production in sows (n = 24) fed control (19.6% CP) or reduced CP (RCP; 14.2% CP) diets under thermoneutral (TN; 21±1.5°C) or cycling heat stress (HS; 32±1.5°C daytime and 24±1.5°C nighttime) conditions. We hypothesized that RCP fed lactating sows with supplemental AA have increased EAA efficiency for milk production under TN and HS conditions. Diets contained 0.90% SID Lys and 2,580 kcal/kg. Sow BW and backfat were recorded on d 1 and 21 to estimate body protein mobilization (BPM). Piglet BW was recorded on d 1 and 21 to estimate milk yield. Amino acid efficiencies were calculated based on milk AA output relative to SID AA intake corrected for AA contribution from BPM. During HS, N, Arg, His, Ile, Leu, Lys, Met, Phe, Thr, Trp, and Val efficiency for milk production did not differ between sows fed control (42, 26, 44, 36, 39, 49, 52, 32, 50, 43 and 44%, respectively) and RCP (56, 39, 51, 49, 56, 47, 42, 39, 50, 59 and 41%, respectively) diets. Compared to control sows, RCP sows had greater (P < 0.05) efficiency of Arg (30% vs. 61%) under TN condition. Efficiencies of His, Ile, Leu, Phe, and Trp tended to be greater (P = 0.07, 0.06, 0.06, 0.07 and 0.06, respectively) in RCP compared to control sows (50, 41, 44, 36, and 50% vs. 74, 67, 75, 54 and 78%, respectively). Efficiencies of Lys, Met, Thr, Trp and Val did not differ between control and RCP sows (56, 59, 57, and 50% vs. 67, 59, 69 and 57%, respectively). In summary, an RCP diet improved efficiency of N, Arg, His, Ile, Leu, Phe, and Trp for milk production in lactating sows under TN but not HS conditions.

Effect of dietary methionine supplementation on hoof horn growth in primiparous cows

1998 ◽  
Vol 1998 ◽  
pp. 200-200
Author(s):  
J. A. Metcalf ◽  
C. Marsh ◽  
A. M. Johnston ◽  
S. A. May ◽  
C. T. Livesey
Keyword(s):  
Amino Acid ◽  
Milk Production ◽  
Block Design ◽  
Rapeseed Meal ◽  
Amino Acid Profile ◽  
Major Protein ◽  
Horn Growth ◽  
Increase Milk Production ◽  
Soya Bean Meal ◽  
Sulphur Amino Acids

Horn growth rate does not appear to be related to the amino acid profile of the major protein source for dairy cattle (Offer, Logue & Roberts, 1997), but it is possible that sulphur amino acids are limiting in early lactation, when the homeorhetic drive to milk production is most extreme. Supplementation of a high production ration for dairy cows with protected methionine should increase milk production, and allow any sulphur amino acid limitation on horn growth to be alleviated (Mengal, Galbraith, Souri & Scaife, 1997).A total of 60 in-calf Holstein heifers were divided into two groups in a randomised block design. The study commenced approximately three weeks pre-calving until 26 weeks post calving, and animals were housed in one of three systems for the duration. Two diets were formulated based on a grass silage:maize silage mixture (50:50 DM basis), with rolled wheat, soya bean meal, sugar beet feed and rapeseed meal and were offered from approximately five days post calving for the remainder of the 26 week period.

scholarly journals Feeding a reduced protein diet with a near ideal amino acid profile improves amino acid efficiency and nitrogen utilization for milk production in sows1,2

2019 ◽  
Vol 97 (9) ◽  
pp. 3882-3897 ◽  
Author(s):  
Sai Zhang ◽  
Mu Qiao ◽  
Nathalie L Trottier
Keyword(s):  
Amino Acid ◽  
Milk Production ◽  
Nitrogen Retention ◽  
Amino Acid Profile ◽  
Utilization Efficiency ◽  
Protein Diet ◽  
Biological Efficiency ◽  
Lactation Performance ◽  
Total N ◽  
Peak Lactation

Abstract Fifty-four lactating multiparous Yorkshire sows were used to test the hypothesis that feeding a reduced protein diet with a near ideal AA (NIAA) profile increases the biological utilization efficiency of N and essential AA (EAA) for milk production in part as a result of reduced dietary Leu concentration. Sows were fed 1 of 3 isocaloric diets containing the following concentration of CP (% as-fed, analyzed): 18.74 (Control: CON), 13.78 (Optimal: OPT), and 14.25 (Optimal + Leu: OPTLEU). The OPT and OPTLEU diets contained the same concentration of crystalline AA (CAA) to meet requirements of the limiting AA. Crystalline Leu was added to OPTLEU to contain the same SID Leu concentration as that of CON. Sows were weighed on days 1 and 21 of lactation and piglets on days 1, 4, 8, 14, 18, and 21 of lactation. Nitrogen retention was measured for 48 or 72 h between days 4 and 8 (early) and days 14 and 18 (peak) of lactation. Sow BW change and ADFI did not differ between diets. Litter growth rate (LGR) during early lactation did not differ between diets. At peak lactation, LGR was higher in sows fed OPT compared with CON (P < 0.05) and lower in sows fed OPTLEU compared with OPT (P < 0.05). In early and peak lactation, total N retention, and milk N output efficiency were greater in OPT (P < 0.01) and OPTLEU (P < 0.05) than CON. Compared with CON, overall biological efficiency of N, Arg, His, Ile, Leu, Phe, and Trp were greater (P < 0.05), whereas those of Lys, Met, Thr, and Val did not differ in sows fed OPT and OPTLEU, except for Leu which did not differ between OPTLEU and CON. Compared with OPT, only Leu and Met efficiency were lower (P < 0.01) and tended to be lower (P = 0.10), respectively, in sows fed OPTLEU. Reducing CP with a NIAA profile to attain the minimum Leu requirement maintained overall lactation performance, improved utilization efficiency of N, Arg, His, Ile, Leu, Phe + Tyr, and Trp for milk production, and maximized efficiency of Ile, Leu, Lys, Met + Cys, Phe + Tyr, Thr, Trp, and Val. Addition of Leu did not reduce N and EAA utilization efficiency. This study provides revised and novel maximum biological efficiency value (MBEV) for Ile (65.4), Leu (75.1), Lys (63.2), Met + Cys (78.2), Phe + Tyr (69.5), Thr (71.0), Trp (70.1), and Val (57.0). These MBEV can be used to more accurately predict the requirement for those AA during lactation.

Effect of dietary methionine supplementation on hoof horn growth in primiparous cows

1998 ◽  
Vol 1998 ◽  
pp. 200-200
Author(s):  
J. A. Metcalf ◽  
C. Marsh ◽  
A. M. Johnston ◽  
S. A. May ◽  
C. T. Livesey
Keyword(s):  
Amino Acid ◽  
Milk Production ◽  
Block Design ◽  
Rapeseed Meal ◽  
Amino Acid Profile ◽  
Major Protein ◽  
Horn Growth ◽  
Increase Milk Production ◽  
Soya Bean Meal ◽  
Sulphur Amino Acids

Horn growth rate does not appear to be related to the amino acid profile of the major protein source for dairy cattle (Offer, Logue & Roberts, 1997), but it is possible that sulphur amino acids are limiting in early lactation, when the homeorhetic drive to milk production is most extreme. Supplementation of a high production ration for dairy cows with protected methionine should increase milk production, and allow any sulphur amino acid limitation on horn growth to be alleviated (Mengal, Galbraith, Souri & Scaife, 1997).A total of 60 in-calf Holstein heifers were divided into two groups in a randomised block design. The study commenced approximately three weeks pre-calving until 26 weeks post calving, and animals were housed in one of three systems for the duration. Two diets were formulated based on a grass silage:maize silage mixture (50:50 DM basis), with rolled wheat, soya bean meal, sugar beet feed and rapeseed meal and were offered from approximately five days post calving for the remainder of the 26 week period.

Tronchuda cabbage (Brassica oleracea L. var. costata DC) leaf free amino acid profile

Planta Medica ◽  
2008 ◽  
Vol 74 (09) ◽  
Author(s):  
BM Silva ◽  
AP Oliveira ◽  
DM Pereira ◽  
C Sousa ◽  
RM Seabra ◽  
...  
Keyword(s):  
Amino Acid ◽  
Brassica Oleracea ◽  
Free Amino Acid ◽  
Free Amino ◽  
Amino Acid Profile ◽  
Tronchuda Cabbage ◽  
Brassica Oleracea L
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