Search Results - "Hacker, R.R."

Relationships between serum IGF-I concentrations and piglet development or neonatal viability following porcine somatotropin (pST) and insulin administration to gestating gilts by Okere, C., Hacker, R.R., Werchola, G.

“…This study was designed to evaluate the effects of exogenous treatment with pST, insulin and their combination on periparturient serum IGF-I levels, prenatal…”
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Pigs expressing salivary phytase produce low-phosphorus manure by Phillips, John P, Forsberg, Cecil W, Golovan, Serguei P, Meidinger, Roy G, Ajakaiye, Ayodele, Cottrill, Michael, Wiederkehr, Miles Z, Barney, David J, Plante, Claire, Pollard, John W, Fan, Ming Z, Hayes, M. Anthony, Laursen, Jesper, Hjorth, J. Peter, Hacker, Roger R

“…To address the problem of manure-based environmental pollution in the pork industry, we have developed the phytase transgenic pig. The saliva of these pigs…”
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Effects of diaoxinxuekang on ascites in broilers by Wang, J Y, Hacker, R R

“…To investigate whether Diaoxinxuekang (a Chinese medicine that is reported to improve blood circulation) plays a role in preventing ascites in broilers,…”
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Effect of chronobiological alteration of the circadian rhythm of prolactin and somatotropin release in the dairy cow by Evans, N M, Hacker, R R, Hoover, J

“…The objective of this study was to determine if a skeletal photoperiod administered at the appropriate time of a 24-h day could stimulate prolactin and…”
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Effect of Porcine Somatotropin and Insulin on Prenatal Survival and Uteroplacental and Umbilical Cord Development in Gestating Gilts by Okere, C, Hacker, R.R

“…Pregnant Yorkshire gilts were utilized to investigate the efficacy of exogenous administration of pST and/or insulin in enhancing prenatal piglet survival,…”
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Effect of chronobiological manipulation of lactation in the dairy cow by Evans, N M, Hacker, R R

“…The objective of this study was to determine if chronobiological manipulation of the environment through the use of skeletal photoperiods could enhance milk…”
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AN INVESTIGATION OF IMMUNIZATION AGAINST SOMATOSTATIN BY MEASURING ANTIBODY TITRES, SOMATOSTATIN AND SOMATOTROPIN PROFILES IN GILTS by Du, Z.L, Hacker, R.R

“…The effect of active immunization against porcine somatostatin (SRIF-14) on somatostation and somatotropin secretion profile in 18 gilts was investigated…”
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Transgene and mitochondrial DNA are indicators of efficient composting of transgenic pig carcasses by Murray, Dave, Meidinger, Roy G., Golovan, Serguei P., Phillips, John P., O’Halloran, Ivan P., Fan, Ming Z., Hacker, Roger R., Forsberg, Cecil W.

“…Composting is an environmentally sound method for the disposal of on-farm livestock mortalities that generates material suitable for use as fertilizer;…”
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Component and Factor Analysis of Pork Farm Odour using Structural Learning with the Forgetting Method by Pan, Leilei, Yang, Simon X., Otten, Lambert, Hacker, Roger R.

“…In pig farming, odour measurement and reduction are necessary for a cleaner environment, lower health risks to humans, and higher quality of pig production…”
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Influence of photoperiod on growth, puberty and plasma LH [luteinizing hormone] levels in gilts by Ntunde, B.N, Hacker, R.R, King, G.J

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Circadian variation of portal, arterial and venous blood levels of melatonin in pigs and its relationship to food intake and sleep by Bubenik, G.A., Pang, S.F., Cockshut, J.R., Smith, P.S., Grovum, L.W., Friendship, R.M., Hacker, R.R.

“…Circadian levels of melatonin were determined in the hepatic portal vein, cranial vena cava, and the lower aorta of ten juvenile pigs. Blood was sampled every…”
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Melatonin concentrations in serum and tissues of porcine gastrointestinal tract and their relationship to the intake and passage of food by Bubenik, G A, Pang, S F, Hacker, R R, Smith, P S

“…Melatonin concentrations were determined in serum and 10 segments of the gastrointestinal tract (GIT) of 48 pigs (100 kg weight). The animals were fasted for…”
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Incidence of clinical mastitis in a herd of Holstein cattle by Batra, T R, Nonnechke, B J, Newbould, F H, Hacker, R R

“…Incidence of clinical mastitis in 760 lactations of 331 Holstein cows was studied for effects of sire, parity, and month of calving. Incidence of clinical…”
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Nucleic acid content of mammary glands of virgin and pregnant gilts by Hacker, R R, Hill, D L

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Single-component Modelling of Pig Farm Odour with Statistical Methods and Neural Networks by Janes, Kevin R., Yang, Simon X., Hacker, Roger R.

“…Pork farm odour has become an increasingly important problem for the pork industry because non-farming rural residents object to the odours coming from pig…”
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Hormonal induction of lactation in the bovine: mammary gland histology and milk composition by Narendran, R, Hacker, R R, Batra, T R, Burnside, E B

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Response of bovine serum prolactin and growth hormone to duodenal, abomasal, and oral administration of thyrotropin-releasing hormone by Smith, V G, Hacker, R R, Burton, J H, Veira, D M

“…Thyrotropin-releasing hormone was injected into the duodenum of two 500-kg steers, placed into the abomasum of two prepubertal bulls, and fed to four bull…”
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Determination of vanilmandelic acid in pig urine and chicken feces by gas-liquid chromatography by Lun, A, Hacker, R R, Brown, R G, Hurnik, J F

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Factors affecting excretory behavior of pigs by Hacker, R.R, Ogilvie, J.R, Morrison, W.D, Kains, F

“…A 24 factorial experiment with six pens per treatment was conducted to examine the factors affecting the excretory behavior of growing-finishing pigs. The…”
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Variables related to the progress of parturition and probability of stillbirth in swine by Zaleski, H.M, Hacker, R.R

“…Sow and piglet variables related to probability of stillbirth and to viability score were analyzed in litters from 98 multiparous Yorkshire sows. Immediately…”
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