American Society for Testing and Materials (ASTM) 1990. Annual book of ASTM standards, Standard tests method D584. Wool content of raw wool – Laboratory scale, Sec. 7, volume 07.01:193–197. ASTM, Philadelphia, PA, USA.
ARC 1980. The nutrient requirements of ruminant livestock. Common-wealth Agricultural Bureaux, Slough, UK.
Association of American Feed Control Officials (AAFCO
) 2000. Official Publication, Atlanta, GA, USA.
Blanchard, RK and Cousins, RJ 1996. Differential display of intestinal mRNAs regulated by dietary zinc. Proceedings of the National Academy of Sciences of the United States of America 93, 6863–6868.
Burton, DJ, Ludden, PA, Stobart, RH and Alexander, BM 2015. 50 years of the Wyoming ram test: how sheep have changed. Journal of Animal Science 93, 1327–1331. https://doi.org//10.2527/jas2014-8150.
Cao, J, Henry, PR, Guo, R, Howlwerda, RA, Toth, JP, Littell, RC, Miles, RD and Ammerman, CB 2000. Chemical characteristics and relative bioavailability of supplemental organic zinc sources for poultry and ruminants. Journal of Animal Science 78, 2039–2054.
Cardoso, FM and Queiroz, GF 1988. Duration of the cycle of the seminiferous epithelium and daily sperm production of Brazilian hairy rams. Animal Reproduction Science 17, 77–84.
Colagar, AH, Marzony, ET and Chaichi, MJ 2009. Zinc levels in seminal plasma are associated with sperm quality in fertile and infertile men. Nutrition Research 29, 82–88.
Fadayifar, A, Aliarabi, H, Tabatabaei, MM, Zamani, P, Bahari, A, Malecki, M and Dezfoulian, AH 2012. Improvement in lamb performance on barley based diet supplemented with zinc. Livestock Science 144, 285–289.
Gunter, SA, Malcolm-Callis, KJ, Duff, GC and Kegley, EB 2001. Performance of steers supplemented with zinc during grazing and receiving at the feedlot. The Professional Animal Scientist 17, 280–286. https://doi.org//10.15232/S1080-7446(15)31641-7.
Hafez, ESE and Hafez, B 2000. Reproduction in farm animals, 7th edition. Lippincott Williams and Wilkins, Philadelphia, PA, USA.
Hale, WH and Garrigus, US 1953. Synthesis of cysteine in wool from elemental sulfur and sulfate sulfur. Journal of Animal Science 12, 492–496.
Hanford, KJ, Van Vleck, LD and Snowder, GD 2003. Estimates of genetic parameters and genetic change for reproduction, weight, and wool characteristics of Targhee sheep. Journal of Animal Science 81, 630–640. https://doi.org//10.2527/2003.813630x.
Herdt, TH and Hoff, B 2011. The use of blood analysis to evaluate mineral element status in ruminant livestock. Veterinary Clinics of North America: Food Animal Practice 27, 255–283.
Ishaq, SL, Page, CM, Yoeman, CJ, Murphy, TW, Van Emon, ML and Stewart, WC 2019. Zinc AA supplementation alters yearling ram rumen bacterial communities but zinc sulfate supplementation does not. Journal of Animal Science 97, 687–697. https://doi.org//10.1093/jas/sky456
Jafarpour, N, Khorvash, M, Rahmani, HR, Pezeshki, A and Hosseini-Ghaffari, M 2014. Dose-responses of zinc-methionine supplements on growth, blood metabolites and gastrointestinal development in sheep. Journal of Animal Physiology and Animal Nutrition 99, 668–675.
Jones, GB and Tracy, BF 2015. Evaluating seasonal variation in mineral concentration of cool-season pasture herbage. Grass Forage Science 70, 94–101.
Kumar, N, Verma, RP, Singh, LP, Varshney, VP and Dass, RS 2006. Effect of different levels and sources of zinc supplementation on quantitative and qualitative semen attributes and serum testosterone level in crossbred cattle (Bos indicus × Bos taurus) bulls. Reproduction Nutrition Development 46, 663–675.
Martin, GB and White, CL 1992. Effects of dietary zinc deficiency on gonadotrophin secretion and testicular growth in young male sheep. Journal of Reproduction and Fertility 96, 497–507. https://doi.org//10.1530/jrf.0.0960497.
Martin, GB, White, CL, Markey, CM and Blackberry, MA 1994. Effects of dietary zinc deficiency on the reproductive system of young male sheep: testicular growth and the secretion of inhibin and testosterone. Journal of Reproduction and Fertility 101, 87–96.
Masters, DG, Chapman, RE and Vaughan, JD 1985. Effects of zinc deficiency on the wool growth, skin and wool follicles of pre-ruminant lambs. Australian Journal of Biological Sciences 38, 355–364.
Masters, DG, Paynter, DI, Briegel, J, Baker, SK and Purser, DB 1998. Influence of manganese intake on body, wool and testicular growth of young rams and on the concentration of manganese and the activity of manganese enzymes in tissues. Australian Journal of Agricultural Research 39, 517–524.
NRC 2007. Nutrient requirements of sheep, 7th edition. National Academy Press, Washington, DC, USA.
Page, CM, McGregor, I, Van Emon, ML, Murphy, TW, Larson, CK, Berardinelli, JG and Stewart, WC 2017. Effects of zinc source and dietary concentration on zinc status, growth performance, and wool characteristics in developing rams. American Society of Animal Science 68, 127–131. https://doi.org//10.2527/asasws.2017.0053.
Page, CM, Murphy, TW, Van Emon, ML, Bowman, JGP, Wyffels, SA and Stewart, WC 2018. Blood serum mineral element concentrations of weaned Montana ram lambs and their relationship with water quality characteristics. The Professional Animal Scientist 34, 410–420. https://doi.org//10.15232/pas.2018-01747.
Pal, DT, Gowda, NKS, Prasad, CS, Amarnath, R, Bharadwaj, U, Suresh Babu, G and Sampath, KT 2010. Effect of copper- and zinc-methionine supplementation on bioavailability, mineral statues and tissue concentrations of copper and zinc in ewes. Journal of Trace Elements in Medicine and Biology 24, 89–94.
Rahman, HU, Qureshi, MS and Khan, RU 2014. Influence of dietary zinc on semen traits and seminal plasma antioxidant enzymes and trace minerals of Beetal bucks. Reproduction in Domestic Animals 49, 1004–1007. https://doi.org//10.1111/rda.12422.
Spears, JW 1989. Zinc methionine for ruminants: relative bioavailability of zinc in lambs and effects on growth and performance of growing heifers. Journal of Animal Science 67, 835–843.
Suttle, NF 2010. Mineral nutrition of livestock, 4th edition. CABI Publishing, Wallingford, UK.
Underwood, EJ and Somers, M 1969. Studies of zinc nutrition in sheep. І. The relation of zinc to growth, testicular development, and spermatogenesis in young rams. Australian Journal of Agriculture Research 20, 889–897.
Underwood, EJ and Suttle, F 1999. The mineral nutrition of livestock, 3rd edition. CAB International, Wallingford, UK.
Wahlen, R, Evans, L, Turner, J and Hearn, R 2005. The use of collision/reaction cell ICP-MS for the determination of 18 elements in blood and serum samples. Spectroscopy 20, 12.
White, C, Martin, G, Hynd, P and Chapman, R 1994. The effect of zinc deficiency on wool growth and skin and wool follicle histology of male Merino lambs. British Journal of Nutrition 71, 425–435.
Zhang, H, Nie, HT, Wang, Q, Wang, ZY, Zhang, YL, Guo, RH and Wang, F 2015. Trace element concentrations and distributions in the main body tissues and the net requirements for maintenance and growth of Dorper × Hu Lambs. Journal of Animal Science 93, 2471–2481.