@article{guo_sun_dedecker_coffey_kim_2019, title={Effect of suckling intensity of primiparous sows on production performance during current and subsequent parities1}, volume={97}, ISSN={0021-8812 1525-3163}, url={http://dx.doi.org/10.1093/jas/skz341}, DOI={10.1093/jas/skz341}, abstractNote={Abstract This study was conducted to evaluate the effects of suckling intensity (litter size and lactation length) to primiparious sows on production performance during current and subsequent parities. Upon farrowing, 115 primiparous sows (farrowing weight: 222.7 ± 20.0 kg) were initially allotted to 4 treatments in a 2 × 2 factorial arrangement with 2 litter sizes: 10 and 13 piglets (LS10 vs. LS13), and 2 lactation lengths: 21 and 27 d (LL21 vs. LL27). Upon weaning, sows were rebred and those farrowed successfully (n = 66) kept 10 piglets and weaned at 21 d in the second parity. Sows were fed ad libitum during lactation in both parities. Feed intake, BW loss, backfat loss, litter size, and litter weight gain during lactation in both parities were determined. Litter weight gain in LS13 was greater (P < 0.05) than that in LS10 (54.4 vs. 47.7 kg) during the first lactation. Sows in LS13 had a greater (P < 0.05) BW loss than sows in LS10 (24.1 vs. 17.4 kg). Body weight loss was not different between LL27 and LL21. Sows in LS13 tended to have a greater (P = 0.075) removal rate than those in LS10 (47.5 vs. 32.2%). Sows in LL27 had a smaller (P < 0.05) removal rate than those in LL21 (28.0 vs. 51.7%). In the second parity, gestation BW gain in LL27 tended to be greater (P = 0.098) than that in LL21 when the previous litter size was 10 piglets (56.1 vs. 33.2 kg). Litter performance and feed intake of sows were not affected by previous litter size, lactation length, and their interaction. The farrowing weight, farrowing body protein and lipid, body weight loss was not different between LS13 and LS10, whereas backfat loss in LS13 was smaller (P < 0.05) than that in LS10 during the second lactation (0.9 vs. 2.4 mm). The predicted body lipid loss in LS13 was also smaller than that in LS10 (2.3 vs. 5.3 kg) during the second lactation. Sows in LL27 had a smaller (P < 0.05) BW loss and body lipid loss during the second lactation than sows in LL21 (4.0 vs. 9.0 kg; 2.3 vs. 4.8 kg). The concentration of milk fat in LL27 was smaller (P < 0.05) than that in LL21 (7.9 vs. 9.1%). In conclusion, increasing suckling intensity to primiparous sows increased litter weight gain but increasing litter size reduced piglet ADG. Sow performance in the second lactation was not negatively affected by increasing suckling intensity of the first lactation. Interestingly, sows with an increased suckling intensity in the first lactation had reduced loss of body reserves in the second lactation.}, number={12}, journal={Journal of Animal Science}, publisher={Oxford University Press (OUP)}, author={Guo, Ji Yao and Sun, Yawang and DeDecker, Ashley E and Coffey, Max Terry and Kim, Sung Woo}, year={2019}, month={Nov}, pages={4845–4854} } @article{shen_coffey_kim_2015, title={Effects of short term supplementation of L-tryptophan and reducing large neutral amino acid along with L-tryptophan supplementation on growth and stress response in pigs}, volume={207}, ISSN={["1873-2216"]}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-84938202207&partnerID=MN8TOARS}, DOI={10.1016/j.anifeedsci.2015.06.020}, abstractNote={Two experiments were conducted to evaluate the effects of short term dietary supplementation of l-Trp and reducing large neutral amino acid (LNAA; valine, leucine, isoleucine, tyrosine, and phenylalanine) on growth and stress response in nursery and growing pigs. In Exp. 1, 674 crossbred pigs in 40 pens at 9-week of age were randomly allotted to 2 dietary treatments with supplementation of 0.0% and 0.8% l-Trp to a corn and soybean meal basal diet. Experimental period was composed of 5 days in a nursery and 7 days in a finisher. After 12 days feeding of experimental diets, pigs were provided a common diet for an additional 7 days. In Exp. 2, 108 crossbred barrows at 6-week of age were randomly allotted to 3 dietary treatments: (1) a corn soybean meal basal diet (4.5% LNAA) supplemented with 0.0% l-Trp; (2) a corn soybean meal basal diet (4.5% LNAA) supplemented with 0.8% l-Trp; (3) a reduced LNAA (3.8%) diet supplemented with 0.7% l-Trp, which had the same Trp:LNAA ratio as treatment 2. The experimental period lasted 16 days. In Exp. 1, during the entire period, pigs fed the diet supplemented with 0.8% l-Trp had increased ADG and gain:feed (P < 0.05 and P < 0.01, respectively) compared with pigs fed the diet without l-Trp supplementation. On day 6, one day after mixing, pigs fed the diet supplemented with 0.8% l-Trp had a lower (P < 0.05) concentration of salivary cortisol compared with pigs fed the diet without l-Trp supplementation. In Exp. 2, during the entire period, pigs fed the diet supplemented with 0.8% l-Trp or a reduced LNAA diet supplemented with 0.7% l-Trp had increased gain:feed (P < 0.01) compared with pigs fed the diet without l-Trp supplementation. Weight gain and gain:feed were similar (P > 0.05) between pigs fed the diet supplemented with 0.8% l-Trp and pigs fed a reduced LNAA diet supplemented with 0.7% l-Trp. In conclusion, short term supplementation of 0.8% l-Trp improved growth performance of pigs during period of social-mixing and was associated with reduced stress hormone concentrations. Dietary supplementation of 0.8% l-Trp had similar effects on feed efficiency as a reduced LNAA diet supplemented with 0.7% l-Trp, suggesting lowering LNAA is a valid method of reducing levels of l-Trp supplementation required for mitigating stress response.}, journal={ANIMAL FEED SCIENCE AND TECHNOLOGY}, publisher={Elsevier}, author={Shen, Y. B. and Coffey, M. T. and Kim, S. W.}, year={2015}, month={Sep}, pages={245–252} } @article{passos_andrade_phillips_coffey_kim_2015, title={Nutrient value of spray field forages fed to pigs and the use of feed enzymes to enhance nutrient digestibility}, volume={93}, ISSN={["1525-3163"]}, url={https://publons.com/wos-op/publon/9300631/}, DOI={10.2527/jas.2014-8435}, abstractNote={This study determined the DE, ME, apparent total tract digestibility (ATTD) of N, and N retention of spray field forages (Bermuda grass, forage sorghum, and sweet sorghum) fed to pigs and the effects of the supplemental feed enzymes on energy and N utilization. A basal diet was formulated with 96% corn and 4% amino acids, minerals, and vitamins. Test diets contained 85% basal diet + 15% Bermuda grass, forage sorghum, or sweet sorghum. Allzyme SSF (Alltech, Nicholasville, KY) was used as a feed enzyme, which was composed of cellulase, glucanase, xylanase, phytase, and protease. The basal diet and test diets were evaluated by using 4 sets of 2 × 2 Latin square designs consisting of 2 pigs and 2 periods with a total of 32 barrows (38.7 ± 7.9 kg). Each period (10-d adjustment and 4-d collection) had 2 Latin squares. The 2 treatments were levels of enzyme supplementation (0 or 200 mg/kg). Pigs received experimental diets twice daily (0700 and 1700 h) at a fixed amount based on BW of pigs (0.09 × BW0.75 kg). On d 10, chromic oxide (0.5%) was added to the diets at 1700 h as an external marker. Fecal and urine samples were collected during 4 consecutive days. The basal diet contained 3,850 kcal DE/kg, 3,769 kcal ME/kg, 86.06% ATTD of N, and 71.10% N retention and was not affected by enzyme supplementation. Bermuda grass contained 893 kcal DE/kg, 845 kcal ME/kg, -16.50% ATTD of N, and -37.49% N retention and tended to be improved by enzyme supplementation to 1,211 kcal DE/kg (P = 0.098), 1,185 kcal ME/kg (P = 0.081), and -10.54% N retention (P = 0.076). The ATTD of N of Bermuda grass increased (P < 0.05) to 0.08% by enzyme supplementation. The forage sorghum contained 1,520 kcal DE/kg, 1,511 kcal ME/kg, -0.72% ATTD of N, and -16.99% N retention. The sweet sorghum contained 1,086 kcal DE/kg, 1,061 kcal ME/kg, -75.47% ATTD of N, and -49.22% N retention. Enzyme supplementation did not improve energy digestibility of forage sorghum and sweet sorghum. Nitrogen in these forages was poorly utilized. In conclusion, spray field forages including Bermuda grass, forage sorghum, and sweet sorghum can partly be utilized in pig feed to provide energy, although N is rather poorly digested. Feed enzymes could enhance both energy and N utilization in Bermuda grass but not sorghum.}, number={4}, journal={JOURNAL OF ANIMAL SCIENCE}, publisher={Oxford University Press}, author={Passos, A. A. and Andrade, C. and Phillips, C. E. and Coffey, M. T. and Kim, S. W.}, year={2015}, month={Apr}, pages={1721–1728} } @article{pougatchev_jones_connor_rinsland_becker_coffey_connors_demoulin_dzhola_fast_et al._1998, title={Ground-based infrared solar spectroscopic measurements of carbon monoxide during 1994 Measurement of Air Pollution From Space flights}, volume={103}, ISSN={["2169-897X"]}, DOI={10.1029/97JD02889}, abstractNote={Results of the comparison of carbon monoxide ground‐based infrared solar spectroscopic measurements with data obtained during 1994 Measurement of Air Pollution From Space (MAPS) flights are presented. Spectroscopic measurements were performed correlatively with April and October MAPS flights by nine research groups from Belgium, Canada, Germany, Japan, New Zealand, Russia, and the United States. Characterization of the techniques and error analysis were performed. The role of the CO a priori profile used in the retrieval was estimated. In most cases an agreement between spectroscopic and MAPS data is within estimated MAPS accuracy of ±10%.}, number={D15}, journal={JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES}, author={Pougatchev, NS and Jones, NB and Connor, BJ and Rinsland, CP and Becker, E and Coffey, MT and Connors, VS and Demoulin, P and Dzhola, AV and Fast, H and et al.}, year={1998}, month={Aug}, pages={19317–19325} } @article{coffey_britt_1993, title={Enhancement of sow reproductive performance by beta-carotene or vitamin A}, volume={71}, DOI={10.2527/1993.7151198x}, abstractNote={Two experiments were conducted at separate commercial farms. In Exp. 1, all primiparous sows and an equal number of multiparous sows weaned each week were randomly assigned to one of four treatment groups. Treatments consisted of one i.m. injection on the day of weaning of 0, 50, 100, or 200 mg of beta-carotene. Sows were checked for estrus with boars once daily and mated at first estrus after weaning. A sample of sows (n = 100) was selected for determination of plasma beta-carotene and vitamin A. Blood samples were obtained from another group (n = 120) 14 d after injection to determine plasma progesterone. In Exp. 2, treatments consisted of i.m. injection of 200 mg of beta-carotene, 50,000 IU of vitamin A, or vehicle on the day of weaning, on the day of mating, and on d 7 after mating. In both experiments, the sow diet was supplemented with 11,000 IU/kg of vitamin A. In Exp. 1, there was no effect of dose of beta-carotene on the interval from weaning to estrus or on the repeat service rate. There was a dose x parity interaction on the number of pigs born dead (P < .01) and born alive (P < .10), because treatment with beta-carotene did not affect reproduction in primiparous sows, but litters subsequently farrowed by multiparous sows had more pigs born alive and fewer pigs born dead. There was a dose x day interaction (P < .05) on plasma beta-carotene; beta-carotene was elevated on d 6 and 13 after injection.(ABSTRACT TRUNCATED AT 250 WORDS)}, number={5}, journal={Journal of Animal Science}, author={Coffey, M. T. and Britt, J. H.}, year={1993}, pages={1198} } @article{coffey_shireman_herman_jones_1991, title={CARNITINE STATUS AND LIPID UTILIZATION IN NEONATAL PIGLETS FED DIETS LOW IN CARNITINE}, volume={121}, ISSN={["1541-6100"]}, DOI={10.1093/jn/121.7.1047}, abstractNote={Forty-eight newborn piglets were assigned to dietary regimens to examine carnitine status and lipid utilization by piglets nursing sows (Diet 1), fed a high-carnitine (1507 mumol carnitine/kg dry matter) casein-whey formula (Diet 2) or fed a low-carnitine (35 mumol carnitine/kg dry matter) egg white protein formula (Diet 3). Four piglets were killed at birth, and four per dietary group were killed at 3, 7, 14 and 21 d of age. Piglets fed Diet 3 had lower (P less than 0.01) carnitine in plasma and liver by d 7 and carnitine remained lower to d 21. Heart carnitine tended to be lower in piglets fed Diet 3, but the differences were not significant. Longissimus muscle carnitine was not affected. In vitro palmitate oxidation was lower (P less than 0.05) on d 7 in the liver from piglets fed Diet 3 but not on d 3, 14 and 21. Low dietary carnitine did not affect in vitro liver beta-hydroxybutyrate production or oxidation of palmitate by longissimus muscle. Plasma glucose and nonesterified fatty acids were higher (P less than 0.05) in piglets nursing sows than those fed Diets 2 or 3. Piglets receiving Diet 3 had reduced carnitine in plasma and certain tissues, and liver lipid oxidation was depressed on d 7 of age, compared with those receiving the other two diets. Feeding the low carnitine diet did not alter glucose status or plasma lipids and ketones.}, number={7}, journal={JOURNAL OF NUTRITION}, author={COFFEY, MT and SHIREMAN, RB and HERMAN, DL and JONES, EE}, year={1991}, month={Jul}, pages={1047–1053} } @article{coffey_armstrong_esbenshade_1989, title={Effect of active immunization against growth hormone releasing factor (GRF) on metabolism of sows}, volume={72}, journal={Journal of Dairy Science}, author={Coffey, M. T. and Armstrong, J. D. and Esbenshade, K. L.}, year={1989}, pages={197} } @article{coffey_hagler_cullen_1989, title={Influence of dietary protein, fat or amino acids on the response of weanling swine to aflatoxin B1}, volume={67}, DOI={10.2527/jas1989.672465x}, abstractNote={Two experiments were conducted using corn from clean or aflatoxin B1 (AFB1)-contaminated (182 ppb) sources. Weanling pigs (28 d) were fed one of eight dietary treatments arranged in a 2 x 2 x 2 factorial design. In Exp. 1 (192 pigs), treatments varied in corn source (clean or AFB1-contaminated), CP level (18 or 20%) and added fat (0 or 5%). At the end of the 28-d growth trials, plasma samples were obtained. An AFB1 x CP level interaction was detected (P less than .05) for growth rate (ADG), feed intake (FI) and feed/gain ratio (F/G). Feeding AFB1 reduced (P less than .05) ADG (.30 vs .37 kg/d) and FI (.57 vs .66 kg/d) and increased F/G (1.88 vs 1.78) of pigs fed 18% CP diets. Performance of pigs fed 20% CP diets was not altered by AFB1. Adding 5% fat to diets improved (P less than .05) F/G but did not improve ADG of pigs fed AFB1. There was an AFB1 x CP x fat interaction (P less than .05) for plasma cholesterol. Adding fat or increasing the CP level prevented the depression of plasma cholesterol in pigs fed AFB1. In Exp. 2 (96 pigs), all diets contained 18% CP and the treatments varied in corn source (clean or AFB1-contaminated), added L-lysine HCl (0 or .25%) and added DL-methionine (0 or .15%). Feeding AFB1 reduced (P less than .05) ADG of pigs fed the 18% CP diet (.44 vs .50 kg/d) but not of pigs fed diets supplemented with .25% lysine.(ABSTRACT TRUNCATED AT 250 WORDS)}, number={2}, journal={Journal of Animal Science}, author={Coffey, M. T. and Hagler, W. M. and Cullen, J. M.}, year={1989}, pages={465} }