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Artykuły w czasopismach na temat „Wool Growth Nutritional aspects”

Autor: Grafiati

Data publikacji: 4 czerwca 2021

Data aktualizacji: 29 stycznia 2023

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1

Tahmasbi, A. M., H. Galbraith, and J. R. Scaife. "Development of an In Vitro technique to investigate the role of biotin in regulating wool growth in sheep." Proceedings of the British Society of Animal Science 1996 (March 1996): 183. http://dx.doi.org/10.1017/s1752756200593788.

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The development of in vitro culture techniques (Ibraheem et al, 1993, 1994) for the study of caprine hair follicles has proved useful in elucidating aspects of the control of cashmere and mohair fibre production. There is a similar need to investigate nutritional and other factors which regulate the growth of sheep wool. The aim of the present study was to develop an in vitro technique to study the role of the B-vitamin biotin in controlling growth and viability of sheep wool follicles.

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2

Tahmasbi, A. M., H. Galbraith, and J. R. Scaife. "Development of an In Vitro technique to investigate the role of biotin in regulating wool growth in sheep." Proceedings of the British Society of Animal Science 1996 (March 1996): 183. http://dx.doi.org/10.1017/s0308229600031494.

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The development of in vitro culture techniques (Ibraheem et al, 1993, 1994) for the study of caprine hair follicles has proved useful in elucidating aspects of the control of cashmere and mohair fibre production. There is a similar need to investigate nutritional and other factors which regulate the growth of sheep wool. The aim of the present study was to develop an in vitro technique to study the role of the B-vitamin biotin in controlling growth and viability of sheep wool follicles.

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3

Adams, N. R., and S. M. Liu. "Principles of nutrient partitioning for wool, growth and reproduction: implications for nematode parasitism." Australian Journal of Experimental Agriculture 43, no. 12 (2003): 1399. http://dx.doi.org/10.1071/ea03007.

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The capacity of sheep to withstand and repel intestinal parasites is a neglected component of effective parasite control. The immune response is strongly influenced by the nutritional status of the sheep. However, we are unable take advantage of this to develop effective control programs because we have neither an adequate understanding nor appropriate quantitative data on the impacts of protein and energy on sheep nutrition. This paper reviews some aspects of current knowledge about the impact on immune responsiveness of nutrient flows within the animal as well as hormonal partitioning mechan

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4

Birrell, HA. "Factors associated with the rate of growth of clean wool on grazing sheep." Australian Journal of Agricultural Research 43, no. 2 (1992): 265. http://dx.doi.org/10.1071/ar9920265.

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In a grazing study that spanned 2.5 years, the rate of clean wool growth (Wi, g/day) in 4 week periods on Corriedale wether sheep was measured on each side of the animal with dyebands that were applied, alternately, at 2 week intervals. The observations (n = 224) on wool growth from 3 contiguous periods Wi = 1, 2 and 3 with the middle overlapping the other two periods, were related to either the daily rate of organic matter intake (OMI, g/day), the digestible organic matter intake (g DOMI/day), the hourly rate of OMI (IR, g OMI/h) or the hourly rate of digestible organic matter intake (DR, g D

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5

Adelson, DL, SG Munro, and DA Tunks. "Perturbation of wool fibre cell differentiation by a mixture of bromodeoxyuridine and fluorodeoxyuridine." Australian Journal of Agricultural Research 42, no. 8 (1991): 1293. http://dx.doi.org/10.1071/ar9911293.

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As part of investigations into the pattern of cell division and differentiation in the wool follicle bulb, the thymidine analogue 5-bromo-2'-deoxyuridine was used to label cells in S phase. A mixture of 5-bromo-2deoxyuridine and 5-fluoro-2'-deoxyuridine was injected into sheep held at a constant plane of nutrition. fibre length growth rates were measured by injecting the animals with either 35S-labelled methionine or cysteine, followed by autoradiography of individual fibres. Fibres from 5-bromo-2'-deoxyuridine/5-fluoro-2'-deoxyuridine treated animals exhibited both abnormal cuticle scale patt

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6

Lee, GJ, and AJ Williams. "Nutritional responses in wool growth by four Merino genotypes of differing wool growth performance." Australian Journal of Agricultural Research 45, no. 6 (1994): 1171. http://dx.doi.org/10.1071/ar9941171.

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Sheep from four Merino flocks, different in annual clean fleece production when grazed together, were offered a range of nutritional treatments to compare their ability to digest dietary organic matter (experiment 1) and to compare the relationships of wool growth and fibre diameter with nutrient intake (experiment 2). The sheep were selected from a finewool (Fl), a strong wool (S), and two medium-Peppin (MP6 and MP10) flocks. The nutritional treatments varied intakes of two pelleted diets-B and F. Diet B consisted of oat grain, lucerne chaff, and oaten straw, while diet F was as for B but for

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7

García-Ruiz, E., V. Marco, and I. Pérez-Moreno. "Laboratory rearing and life history of an emerging grape pest, Xylotrechus arvicola (Coleoptera: Cerambycidae)." Bulletin of Entomological Research 102, no. 1 (September 6, 2011): 89–96. http://dx.doi.org/10.1017/s000748531100040x.

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AbstractSeveral aspects of the biology of Xylotrechus arvicola (Olivier), an emerging grape pest, were studied under laboratory conditions. Four diets were tested to rear this species in the laboratory. Among them, only one made rearing from larva to adult possible. The highest mortality, in all cases, was recorded during the first days of larval development. Larvae were kept 45 days at 8°C to break diapause in order to reduce the normal field larval developmental time. The species' developmental time was similar between sexes, while pupal developmental time and weight were significantly great

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8

Hynd, P. I. "The nutritional biochemistry of wool and hair follicles." Animal Science 70, no. 2 (April 2000): 181–95. http://dx.doi.org/10.1017/s1357729800054655.

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AbstractThe rôle of various classes of nutrients (energy substrates, vitamins, minerals, amino acids) in the production of wool and hair from follicles, is considered for a variety of animal species. The wool and hair follicle have evolved a number of interesting features of carbohydrate metabolism including glutaminolysis, aerobic glycolysis, significant activity of the pentose phosphate pathway, and storage and mobilisation of glycogen. Presumably the necessity to continue to produce fibre despite fluctuations in the supply of oxygen and nutrients has resulted in some of these unique feature

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9

Williams, AJ, and RJ Winston. "A study of the characteristics of wool follicle and fibre in Merino sheep genetically different in wool production." Australian Journal of Agricultural Research 38, no. 4 (1987): 743. http://dx.doi.org/10.1071/ar9870743.

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Fourteen Merino ewes from each of two flocks, selectively bred for either high (Fleece Plus) or low (Fleece Minus) clean fleece weight per head, were randomly allotted to two feeding levels (17 v. 34 g kg-1 liveweight) of a good quality diet and offered these levels for 100 days. During the final 42 days, the rate of wool growth and its components were measured in each sheep. The Fleece Plus sheep had a greater density of wool follicles and produced more wool per unit area of skin. The latter trait interacted with the nutritional level; Fleece Plus sheep were more responsive to the higher nutr

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10

Butler, LG, and GM Head. "Photoperiodic rhythm of wool growth and its contribution to seasonal wool production by the Merino, Polwarth, and their reciprocal crosses in southern Australia." Australian Journal of Experimental Agriculture 34, no. 3 (1994): 311. http://dx.doi.org/10.1071/ea9940311.

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Twelve wethers of each of the Merino and Polwarth breeds and their reciprocal crosses were fed at1 of 2 levels in individual pens for 14 months. Periodic clean wool weight, yield, fibre diameter, and the coefficient of variation (CV%) for fibre diameter were measured from midside patches harvested every6 weeks.There was a significant effect of time of wool harvest on clean wool weight per cm2, yield, fibre diameter(all P<0.01), and its CV% (P<0.05). A trough in wool production occurred about August-September and a peak in January. The amplitude of the photoperiodic rhythm of wool growth

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11

Reis, PJ, DA Tunks, and SG Munro. "Effects of abomasal protein and energy supply on wool growth in Merino sheep." Australian Journal of Agricultural Research 43, no. 6 (1992): 1353. http://dx.doi.org/10.1071/ar9921353.

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The relative importance for wool growth of energy-yielding nutrients compared with amino acids required for incorporation into wool proteins was assessed in an experiment in which most nutrients were supplied via the abomasum. Nine nutritional treatments, providing three levels of protein (53, 99 and 145 g/day) to the intestines at three levels of energy (5.2, 7.5 and 9.7 MJ/day), were given to 12 Merino sheep during three consecutive periods of 3 weeks in a balanced lattice design. Abomasal nutrients consisted of varying proportions of casein, whole milk, glucose and glycerol. There was a lar

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12

Barry, T. N. "The role of condensed tannins in the nutritional value of Lotus pedunculatus for sheep." British Journal of Nutrition 54, no. 1 (July 1985): 211–17. http://dx.doi.org/10.1079/bjn19850106.

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1. Lotus pedunculatus (cv. Grasslands Maku) grown on acid low-fertility soil and containing high concentrations of condensed tannin (76–90 g/kg dry matter (DM)) was grazed by growing sheep for 31–42 d periods in three experiments. In Expt 2 an additional group of lambs grazed areas oversown with white clover (Trifolium repens) and red clover (Trifolium pratense). Lambs were transferred from grazing ryegrass (Lolium perenne) – white clover straight on to lotus in all experiments (unconditioned sheep). In Expt 3 a second group was included which had grazed high-tannin lotus for a pre-experimenta

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13

Stephenson, RGA, GR Suter, DA Pritchard, and MDJ Martin. "Studies of wool growth responses to 2-hydroxy-4-(methylthio) butanoic acid, Alimet, an analogue of methionine." Australian Journal of Experimental Agriculture 30, no. 4 (1990): 477. http://dx.doi.org/10.1071/ea9900477.

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An analogue of DL-methionine, Alimet, was evaluated for its commercial potential for increasing wool growth in Merino sheep in pen and grazing experiments. This was done by administering Alimet as a drench, in drinking water, or via rumen or abomasal fistula, and measuring wool growth rate and plasma methionine concentrations. In vivo data indicated that significant wool growth responses (23-35%) to Alimet as a drench or in drinking water occurred at low rates (estimated 5-6 g/sheep.day) of basal wool production when sheep were fed a lucerne diet to maintain liveweight. At higher rates of clea

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14

Stephenson, RGA, GR Suter, and CJ Howitt. "Wool growth responses to DL-methionine administration and factors affecting the value of supplementation." Australian Journal of Experimental Agriculture 31, no. 4 (1991): 471. http://dx.doi.org/10.1071/ea9910471.

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Wool growth responses to methionine administration were assessed using Peppin Merino wethers on various planes of nutrition. In experiment 1, sheep were fed 700 g/day of lucerne pellets to maintain liveweight. DL-methionine (5.8 g) administered subcutaneously resulted in 0.29 mg/cm2.day (36%) more wool (P<0.01) and a 2.5 �m (15.2%) increase in fibre diameter (P<0.05). In experiment 2, two levels (700 and 1400 g/day) of lucerne pellets were offered, with and without methionine administered subcutaneously (5.8 g). Main treatment analysis indicated a significant (P<0.01) effect of nutrit

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15

McKay, J. C. "Fibre production in angora rabbits." Proceedings of the British Society of Animal Production (1972) 1990 (March 1990): 67. http://dx.doi.org/10.1017/s0308229600018481.

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Angora rabbits carry a mutation.which confers continuous wool growth. The use of the wool in textiles was first recorded in 1706 in the U.K. and western Europe dominated world production until the the early 20th century. China now produces 60 percent of the world's 4,000 tonne annual crop.Genetic and nutritional improvements have led to a five-fold increase in annual yields over the last 40 years. Current commercial strains produce up to 1.5 Kg of wool per year from rabbits weighing 4 Kg. To maintain such yields requires concentrate diets with protein contents of at least 16 percent and cystin

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16

Revell, Dean K., Suzanne K. Baker, and D. Barrie Purser. "Nitrogen and sulfur mobilised from body tissue can be used for wool growth." Australian Journal of Agricultural Research 50, no. 1 (1999): 101. http://dx.doi.org/10.1071/a98068.

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The hypothesis was tested that when nitrogen (N) and sulfur (S) are mobilised from body tissue the rate of wool growth is determined both by the amount of N and S apparently digested and by the amount of N and S mobilised from body tissue. The experiment consisted of seven 5-day periods (Periods 1–7) and N and S retention were measured during each period in 12 mature Merino wethers. During Periods 2 and 3, casein and methionine were infused into the abomasum of all sheep to increase the amount of N and S absorbed in the small intestine. Three nutritional regimes were used in order to manipulat

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17

Terrill, T. H., G. B. Douglas, A. G. Foote, R. W. Purchas, G. F. Wilson, and T. N. Barry. "Effect of condensed tannins upon body growth, wool growth and rumen metabolism in sheep grazing sulla (Hedysarum coronarium) and perennial pasture." Journal of Agricultural Science 119, no. 2 (October 1992): 265–73. http://dx.doi.org/10.1017/s0021859600014192.

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SUMMARYAreas of sulla (Hedysarum coronarium) and pasture (Lolium perenne/Trifolium repens/Holcus lanatus) were grazed by young sheep (29·5–34·8 kg initial liveweight) in four experiments, and effects upon body growth, wool growth and rumen metabolism were measured.Sulla contained 40–50 g condensed tannins (CT)/kg DM, whilst the pasture contained small amounts of CT (2–6 g/kg DM). After chewing during eating, a lower proportion of total CT was readily extractable and greater proportions were protein-bound and fibre-bound. Nutritional effects attributable to CT were assessed by oral administrati

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18

Di Chio, Teresa, Christiane Sokollik, Diego G. Peroni, Lara Hart, Giacomo Simonetti, Franziska Righini-Grunder, and Osvaldo Borrelli. "Nutritional Aspects of Pediatric Gastrointestinal Diseases." Nutrients 13, no. 6 (June 19, 2021): 2109. http://dx.doi.org/10.3390/nu13062109.

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In the last decade, the role of nutritional management in pediatric gastrointestinal diseases has gained increasing popularity. Disease-specific diets have been introduced as conventional treatments by international guidelines. Patients tend to more willingly accept food-based therapies than drugs because of their relatively “harmless” nature. Apart from a diet’s therapeutic role, nutritional support is crucial in maintaining growth and improving clinical outcomes in pediatric patients. Despite the absence of classical “side effects”, however, it should be emphasized that any dietary modificat

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19

Lohan, Anjana. "Integration of Auxology and Nutritional Aspects for Human Growth." Asian Journal of Research in Social Sciences and Humanities 11, no. 9 (2021): 77–82. http://dx.doi.org/10.5958/2249-7315.2021.00044.7.

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Fry, JM, MC McGrath, M. Harvey, and EJ Speijers. "Vitamin E treatment of weaner sheep. II. The effect of vitamin E responsive subclinical myopathy on liveweight and wool production." Australian Journal of Agricultural Research 47, no. 6 (1996): 869. http://dx.doi.org/10.1071/ar9960869.

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Nutritional myopathy occurs as both a clinical and subclinical disease in weaner sheep in Western Australia during summer and autumn. The effect of subclinical nutritional myopathy (SCNM), caused by vitamin E deficiency or combined vitamin E and selenium deficiency, on liveweight and wool was investigated. During the period of SCNM there was no significant difference in liveweight gain in sheep with and without the disease in any of the experiments. Initial liveweight in one experiment was significantly (P < 0.05) higher in sheep that were to develop SCNM during the course of the experiment

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21

Pritchard, DA, PR Martin, and PK O'Rourke. "The role of condensed tannins in the nutritional value of mulga (Acacia aneura) for sheep." Australian Journal of Agricultural Research 43, no. 8 (1992): 1739. http://dx.doi.org/10.1071/ar9921739.

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Sheep were fed mulga (Acacia aneura) ad libitum and supplemented with 0, 12 or 24 g/day of polyethylene glycol molecular weight 4000 (PEG), with or without an additional supplement of 1.5 g/day of each of nitrogen (N), phosphorus (P) and sulfur (S) (NPS). Supplementation with either 12 g/day PEG or 24 g/day PEG increased dry matter intake by 56 and 78% respectively and clean wool growth per unit surface area by 166 and 178% respectively. Supplementation with 24 g/day PEG increased wool fibre diameter, linear growth rate and volumetric growth rate by 32, 29 and 143% respectively. Sheep receivin

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22

Clark, J. E., J. A. Roden, O. Macpherson, and P. R. English. "A study of premature wool loss in sheep." Proceedings of the British Society of Animal Production (1972) 1991 (March 1991): 88. http://dx.doi.org/10.1017/s0308229600020389.

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Premature loss of wool from fleece casting prior to shearing is a problem in some sheep genotypes, in particular in the North Country Cheviot. The reasons for this ocurrence are not fully understood, but it is believed that it is due to a complex of factors including heredity, nutritional and managerial (stress) practices, the wool growth cycle, and physiological parameters such as pregnancy. Prolonged stress is reported to be particularly important in the case of wool slip in ewes which are housed and shorn (Morgan et al, 1986).The present study aimed to investigate the incidence of visible f

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23

Alam, Shaan E., R. B. Singh, Siddharth Gupta, Parinita Dherange, Fabien De Meester, Agnieszka Wilczynska, Suniti Dharwadkar, Douglas Wilson, and Pali Hungin. "Nutritional aspects of epigenetic inheritance." Canadian Journal of Physiology and Pharmacology 90, no. 8 (August 2012): 989–94. http://dx.doi.org/10.1139/y2012-105.

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The impact of diet and environmental factors on genes concerned with epigenetic inheritance and the mechanism of evolution has grown significantly beyond the Modern Synthesis period. Epigenetic inheritance is the passing of phenotypic change to subsequent generations in ways that are outside the genetic code of DNA. Recently, polymorphisms of the human Delta-5 (fatty acid desaturase, FADS1) and Delta-6 (FADS2) desaturase genes have been described as being associated with the level of several long-chain n-3 and n-6 polyunsaturated fatty acids (PUFAs) in serum phospholipids. Increased consumptio

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24

Adams, N. R., J. R. Briegel, R. D. G. Rigby, M. R. Sanders, and R. M. Hoskinson. "Responses of sheep to annual cycles in nutrition 1. Rôle of endogenous growth hormone during undernutrition." Animal Science 62, no. 2 (April 1996): 279–86. http://dx.doi.org/10.1017/s1357729800014582.

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AbstractPlasma concentrations of growth hormone (GH) are elevated in sheep during undernutrition. The present study attempted to determine whether this increased secretion mediated nutritional effects on reproduction or wool growth, using sheep immunized against growth hormone-releasing hormone and given a low-quality, sub-maintenance diet. Immunization reduced plasma concentrations of GH at all times measured (P < 0·01), through reduced pulse frequency, reduced pulse amplitude, and reduced baseline concentrations. Plasma insulin-like growth factor-1 (1GF-1) was also reduced in the immunize

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25

Williams, AJ, and J. Butt. "Wool growth of pregnant Merino ewes fed to maintain maternal liveweight." Australian Journal of Experimental Agriculture 29, no. 4 (1989): 503. http://dx.doi.org/10.1071/ea9890503.

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The wool production at the midside of 15 non-mated Merino ewes was compared with that of their monoctocous (n = 20) and dioctocous (n = 13) flockmates during the second half of pregnancy. The ewes were compared under experimentally controlled feeding conditions designed to maintain the liveweight of each ewe, exclusive of the weights of fleece and conceptus, by progressively increasing the quantities of a sorghum grain and lucerne chaff diet (1:1 by weight) offered to the pregnant ewes. During the latter half of pregnancy, each non-mated ewe consumed 42.1 kg of the diet. The single- and twinbe

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26

Cropper, M., M. D. Lloyd, and G. C. Emmans. "Nutritional manipulation of lamb growth and its effect on body composition and carcase quality." Proceedings of the British Society of Animal Production (1972) 1986 (March 1986): 71. http://dx.doi.org/10.1017/s0308229600015804.

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The growth rate and body composition of lambs depend on their rate of feed intake and the composition of the feed given. The purpose of the experiment described here was to test predictions of the growth and composition of lambs given feeds of two protein contents at three levels of feeding.73 Scottish Blackface wethers were abruptly weaned at 49 days of age and an average live weight (LW) of 18 (sd 2.2) kg. Six, chosen to cover the range in initial liveweight, were killed and those remaining were put into individual pens and fed in one of six ways. Two feeds with 140g CP/kg fresh weight (FW),

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Liu, S. M., G. Mata, H. O'Donoghue, and D. G. Masters. "The influence of live weight, live-weight change and diet on protein synthesis in the skin and skeletal muscle in young Merino sheep." British Journal of Nutrition 79, no. 3 (March 1998): 267–74. http://dx.doi.org/10.1079/bjn19980044.

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Wool growth is derived directly from protein synthesis in the skin of sheep, and is affected by the nutritional status of the animals. The present experiment examined both protein synthesis in the skin and muscle and wool growth in Merino lambs differing in live weight, intake and dietary protein source. The experiment was a 23 factorial design: twenty-four 5-month-old lambs initially weighing 33 kg (heavy) or 25 kg (light) were fed on a hay-based diet with either lupin seed or rapeseed meal as the major protein sources to maintain live weight (M) for 56 d, or were fed at 0.6M for 28 d (period

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Butler, M., and H. Jenkins. "Nutritional aspects of the growth of animal cells in culture." Journal of Biotechnology 12, no. 2 (November 1989): 97–110. http://dx.doi.org/10.1016/0168-1656(89)90009-6.

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Khadega .A. Abdalraouf *, Eltayeb S. Elamin, and Lamia Gadien. "Extraction and Formulation of hydrolyzed-wool keratin solution for hair growth." Omdurman Journal of Pharmaceutical Sciences 2, no. 3 (December 28, 2022): 286–99. http://dx.doi.org/10.52981/ojps.v2i3.2876.

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Hair growth is controlled by hair Follicles which show patterns of cyclic activity with periods of active growth and hair production (anagen), apoptosis-driven involution (catagen) and relative resting (telogen). These transformations are regulated by different variations like endocrine, vascular, neural, age and nutritional. Keratin biomaterial has been used in regenerative medicine owing to its in-vivo and in-vitro biocompatibility. The present study aimed at extracting keratin from wool by sulfitolysis, filtration by dialysis tube and freeze drying. Qualitative analysis of the keratin extra

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Wheeler, JL, HI Davies, DA Hedges, and PJ Reis. "Effects of nutrition and paring on linear hoof growth in sheep." Australian Journal of Agricultural Research 41, no. 1 (1990): 197. http://dx.doi.org/10.1071/ar9900197.

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Paring increased the linear hoof growth on the forefeet of Merino wethers by an average of 4.1% (P < 0.05) with a tendency for paring to promote faster growth on the medial digits. Effects of feeding these sheep with 400, 600, or 1000 g pelleted ration day-1 were assessed in a 4 X 4 Latin square design with 28-day periods using four measures of response. An extra (fifth) period was used to determine residual effects. The proportion of residual (carryover) to direct effect was much smaller for hoof growth than for wool. Hoof growth was not related to wool production. In another experiment, h

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Rylova, N. V., A. S. Samoylov, A. V. Zholinsky, and I. V. Bolshakov. "Actual aspects of sports nutrition in children." Rossiyskiy Vestnik Perinatologii i Pediatrii (Russian Bulletin of Perinatology and Pediatrics) 66, no. 5 (December 9, 2021): 240–45. http://dx.doi.org/10.21508/1027-4065-2021-66-5-240-245.

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The article highlights the modern problems of nutrition for junior athletes. The authors outline the role of the nutritional plan as an integral part of sports training, as well as a factor in the healthy growth and development of a young athlete. They describe the features of the nutritional status of athletes. The article notes the need for educational programs in the field of balanced nutrition, the use of nutritional supplements and sports products among junior athletes.

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Moise, Lavinia. "Observations Regarding the Growth and Exploitation of “Turcana” Breed Sheep on Small and Medium Farms." Annals ”Valahia” University of Targoviste - Agriculture 11, no. 1 (April 1, 2017): 34–40. http://dx.doi.org/10.1515/agr-2017-0007.

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Abstract The exploitation directions in sheep race is determined by the national economic demanding, and the achievement possibilities by the productive potential of the races and also by the system and growth technology, improvement and exploitation of the races. The necessity of combining knowledge which contains a fundamental scientific profile with the applicative knowledge led to an approach of the complex applicative knowledge led to an approach of the complex aspects of the development and modernization of growth and exploitation technologies in import sheep race. Ţurcana continues to b

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33

Graetz, RD. "A Comparative Study of Sheep Grazing a Semi-Arid Saltbush Pasture in Two Condition Classes." Rangeland Journal 8, no. 1 (1986): 46. http://dx.doi.org/10.1071/rj9860046.

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Measurements were made of the wool growth, body weight gain and diet of sheep grazing a saltbush pasture near Broken Hill, N.S.W. The experiment utilized a fenceline contrast in saltbush (Atriplex vesrcarra) density that was visible on Landsat imagery. It ran for five years (1976-1981) with a design of two pasture types by two stocking rates. Fleece weights varied from 3.9-6.0 kg/head and wool production from 0.6-2.9 kg/ha. Neither wool production per head nor bodyweight were substantially affected by stocking rate or pasture type. The composition and quality of the diets selected by sheep on

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Robertson, S. M., G. E. Robards, and E. C. Wolfe. "Grazing management of reproducing ewes affects staple strength." Australian Journal of Experimental Agriculture 40, no. 6 (2000): 783. http://dx.doi.org/10.1071/ea99094.

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A grazing study was conducted on irrigated pastures to assess the influence of manipulating the availability of green pasture at different stages of pregnancy and lactation on the staple strength of broad-wool Merino ewes lambing in July. Sheep subjected to different treatments produced wool ranging between 14 and 48 N/ktex for single-rearing and 22 and 53 N/ktex for non-lambing ewes. Single-bearing/rearing ewes produced wool of strength +4.7 (P>0.05) to –23 N/ktex (P<0.001) in comparison with non-lambing ewes. Reproduction was associated with a reduction in staple strength of 51, 24 and

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Reis, P. J., and T. Sahlu. "The nutritional control of the growth and properties of mohair and wool fibers: a comparative review2." Journal of Animal Science 72, no. 7 (July 1, 1994): 1899–907. http://dx.doi.org/10.2527/1994.7271899x.

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McGuirk, B. J. "Effects of weaner nutrition on sire and flock rankings: a re-analysis of historical data." Animal Production Science 49, no. 12 (2009): 1100. http://dx.doi.org/10.1071/an09032.

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Early work in the 1950s on the wool growth response of sheep from diverse genotypes for wool production in response to varying planes of nutrition at pasture did not show the significant genotype × environment interactions exhibited in later pen studies with the same or very similar genotypes. However, this early study used a log-transformation on all traits to adjust nutritional effects for scale. Re-analysis of the original (i.e. untransformed) data shows that superior genetic merit for clean fleece weight, different sire progeny groups or selection flocks is more apparent when hogget ewes a

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de Souza Osório, Christian Rones Wruck, Gelza Carliane Marques Teixeira, Rafael Ferreira Barreto, Cid Naudi Silva Campos, Aguinaldo José Freitas Leal, Paulo Eduardo Teodoro, and Renato de Mello Prado. "Macronutrient deficiency in snap bean considering physiological, nutritional, and growth aspects." PLOS ONE 15, no. 6 (June 8, 2020): e0234512. http://dx.doi.org/10.1371/journal.pone.0234512.

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Thompson, A. N., and P. I. Hynd. "Wool growth and fibre diameter changes in young Merino sheep genetically different in staple strength and fed different levels of nutrition." Australian Journal of Agricultural Research 49, no. 5 (1998): 889. http://dx.doi.org/10.1071/a97129.

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The wool growth response to nutrition by Merino weaners (liveweight 33· 2±0·58 kg) bred for high or low staple strength (SS) and fed to produce changes in liveweight was examined. The hypothesis tested was that genetic differences in SS are associated with differences in along-fibre variation in diameter. Sheep fed to maintain liveweight produced wool at a more constant rate with smaller and less rapid changes in fibre diameter than that produced by sheep which lost and then gained liveweight (P < 0·001). There were significant (P < 0·05) but relatively small differences in wool growth r

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Zandonadi, Renata Puppin. "An Overview of Nutritional Aspects in Juvenile Idiopathic Arthritis." Nutrients 14, no. 20 (October 20, 2022): 4412. http://dx.doi.org/10.3390/nu14204412.

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There is evidence that nutritional impairment can complicate juvenile idiopathic arthritis (JIA). It is also recognized that the JIA drug treatment may affect the nutritional aspects of patients. It is crucial to understand the impacts that nutritional aspects can have on a patient’s treatment, health, and life. Therefore, this review explores how nutrition influences juvenile idiopathic arthritis. Dietary aspects play essential roles in JIA patients’ growth, body mass index (BMI), bone mineral density (BMD), inflammation, and recovery. Suboptimal nutrition seems to adversely affect the long-t

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Moeeni, V., and A. S. Day. "Impact of Inflammatory Bowel Disease upon Growth in Children and Adolescents." ISRN Pediatrics 2011 (April 5, 2011): 1–5. http://dx.doi.org/10.5402/2011/365712.

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The inflammatory bowel diseases (IBDs) are chronic inflammatory processes affecting the gastrointestinal tract. When diagnosed in childhood and adolescence, IBD almost always impacts adversely upon the nutritional state of the patient. Weight loss and impaired linear growth may be present at diagnosis or subsequently. Further potential nutritional consequences in childhood IBD include malnutrition, anaemia, osteopaenia, and delayed puberty. Understanding the nutritional aspects of IBD is paramount in growing children, especially those entering and advancing through puberty. This paper focuses

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Hegarty, R. S., R. D. Warner, and D. W. Pethick. "Genetic and nutritional regulation of lamb growth and muscle characteristics." Australian Journal of Agricultural Research 57, no. 6 (2006): 721. http://dx.doi.org/10.1071/ar06105.

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Combined actions of nutrition and genetic regulation of the growth rate of lambs as well as the physical, biochemical, and eating quality characteristics of their skeletal muscle were assessed in a major field experiment. Data arising were collated and integrated to consolidate findings made at the farm, animal, tissue, cellular, and gene expression levels. At the farm level, increased nutrient availability significantly increased the growth rate of crossbred lambs and increased the growth advantage resulting from the use of sires with high estimated breeding values (EBV) for growth. In contra

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Adams, N. R., J. R. Briegel, and J. C. Greeff. "Responses of wool growth rate and body reserves to nutrition in Merino ewes: a potential biological link between production and fitness." Australian Journal of Agricultural Research 58, no. 9 (2007): 913. http://dx.doi.org/10.1071/ar06386.

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This study examined whether the low body-fat reserves in sheep with high estimated breeding values (EBVs) for clean fleece weight (CFW) reported previously are affected by nutritional history, and second whether the effect may be related to differences in the variation in fibre diameter (CVfd). Groups of 11 20-month-old Merino ewes with high and low EBVs for CFW and for CVfd were compared in a 2 × 2 design at low bodyweight, then fed ad libitum for 100 days and re-measured. The response of wool growth rate to feed supply (WRF) was estimated as the slope of the regression against time of clean

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Motil, Kathleen J., Mary Fete, and Timothy J. Fete. "Growth, nutritional, and gastrointestinal aspects of focal dermal hypoplasia (Goltz-Gorlin syndrome)." American Journal of Medical Genetics Part C: Seminars in Medical Genetics 172, no. 1 (February 1, 2016): 29–33. http://dx.doi.org/10.1002/ajmg.c.31468.

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KORNIENKO, Р. P. "RESULTS OF THE USE OF SUGAR BEET AND ITS PROCESSED PRODUCTS IN FEEDING LACTATING SHEEP." Sheep, goats, woolen business, no. 3 (2021): 39–42. http://dx.doi.org/10.26897/2074-0840-2021-3-39-42.

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In the beet-growing regions of our country, when producing sugar beet as a technical crop, it is advisable to use it to replace concentrates in feeding lactating sheep in up to 1.5-2.0 kg per head per day. This helps to increase the nutritional value and sugar level in the eaten feed with a stable receipt of metabolic energy and digestible protein. The replacement of a signifi cant part of the concentrates with sugar beet has a positive eff ect on milk production and wool growth.

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Croker, KP, MA Johns, SH Bell, GA Brown, and JF Wallace. "The influence of vaccination with Fecundin and supplementation with lupin grain on the reproductive performance of Merino ewes in Western Australia." Australian Journal of Experimental Agriculture 30, no. 4 (1990): 469. http://dx.doi.org/10.1071/ea9900469.

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The reproductive performances of groups of 4-6-year-old medium wool Merino ewes that were vaccinated with Fecundin and/or fed sweet lupin grain prior to and during the early part of the joining period were compared with untreated ewes over 2 years. The rams were joined with the ewes in early January of each year. In both years the Fecundin and lupin treatments increased ovulation rates (between 0.13 and 0.56) and the incidence of multiple pregnancies (between 1 and 36%). The proportions of lambs born following treatment with Fecundin were larger than those from the ewes fed only lupins. When t

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Read, D. J., and R. Bajwa. "Some nutritional aspects of the biology of ericaceous mycorrhizas." Proceedings of the Royal Society of Edinburgh. Section B. Biological Sciences 85, no. 3-4 (1985): 317–31. http://dx.doi.org/10.1017/s0269727000004097.

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SynopsisSome aspects of the role of the ericoid mycorrhizal symbiosis in the ecology and physiology of ericaceous plants are described. Mycorrhizal infection leads to enhancement of plant nitrogen content and an experimental analysis of the basis of this effect is reported. In addition to improving the efficiency of ammonium absorption at low concentrations, the mycorrhizal endophyte utilises amino acids, peptides and proteins as nitrogen substrates for growth. These are the predominant nitrogen sources in organic heathland soil. It is suggested that the success of ericaceous plants in such so

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Hynd, PI, and BK Everett. "Estimation of Cell Birth Rate in the Wool Follicle Bulb using Colchicine Metaphase Arrest or DNA Labelling with Bromodeoxyuridine." Australian Journal of Agricultural Research 41, no. 4 (1990): 741. http://dx.doi.org/10.1071/ar9900741.

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The birth rate of cells in the wool follicle cells (CBR) was measured in two experiments on sheep differing widely in wool growth rate as a consequence of differences in nutritional regime. In Experiment 1, CBR was determined in one sheep on a high and one on a low plane of nutrition by two methods: the colchicine-metaphase arrest method, or from the product of total cell number and cell cycle time (the latter determined by DNA labelling with 5-bromo-2'-deoxyuridine (BrdU) and analysis of the fraction of mitoses labelled curve). CBR by colchicine was 0.73 and 0.56 of that determined using BrdU

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Souza, Aline das G., Cristina W. Ritterbusch, Renata D. Menegatti, Oscar J. Smiderle, and Valmor J. Bianchi. "Nutritional Efficiency and Morphophysiological Aspects With Growth in the ‘Okinawa Roxo’ Peach Rootstock." Journal of Agricultural Science 11, no. 9 (June 30, 2019): 221. http://dx.doi.org/10.5539/jas.v11n9p221.

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The aim of this study was to evaluate the efficiency of nutrient uptake, accumulation, distribution and use, and its relationship with growth variables, chlorophyll content, and root and shoot dry-weight partitioning in the &lsquo;Okinawa Roxo&rsquo; peach rootstock, submitted to different nutrient solutions and substrates. The experimental design was completely randomised, with four treatments and five replications. The treatments were T1: Ns1 = Souza et al. nutrient solution (2011), applied to a sand substrate; T2: Ns2 = Hoagland and Arnon (1950), applied to a sand substrate; T3: Com

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Reis, Mateus Neri Oliveira, Luciana Cristina Vitorino, Lucas Loram Lourenço, and Layara Alexandre Bessa. "Microbial Inoculation Improves Growth, Nutritional and Physiological Aspects of Glycine max (L.) Merr." Microorganisms 10, no. 7 (July 10, 2022): 1386. http://dx.doi.org/10.3390/microorganisms10071386.

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Considering a scenario where there is a low availability and increasing costs of fertilizers in the global agricultural market, as well as a finitude of important natural resources, such as phosphorus (P), this study tested the effect of the inoculation of rhizospheric or endophytic microorganisms isolated from Hymenaea courbaril and Butia purpurascens on the growth promotion of Glycine max (L.) Merr. The tests were conducted in a controlled greenhouse system, and the effects of biofertilization were evaluated using the following parameters: dry biomass, nutritional content, and photochemical

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Reis, PJ. "Variations in the strength of wool fibres - A review." Australian Journal of Agricultural Research 43, no. 6 (1992): 1337. http://dx.doi.org/10.1071/ar9921337.

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This review outlines the factors that may influence the strength of wool fibres and the associated changes in structure and protein composition that have been observed in weakened fibres. The strength of a wool staple is dependent on the intrinsic strength of the fibres that it contains and the total cross-sectional area of fibre being tested. The minimum fibre diameter and the rate of change of diameter along a staple are important determinants of strength. Different sheep kept under similar conditions show a large range of staple strengths. Estimates of heritability for staple strength are s

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