Výsledky vyhledávání - "I. D. Johnsson"

The effects of exogenous bovine growth hormone and bromocriptine on growth, body development, fleece weight and plasma concentrations of growth hormone, insulin and prolactin in female lambs

Autor: B. W. Butler-Hogg, I. D. Johnsson, I. C. Hart

Publikováno v: Animal Science. 41:207-217

In crossbred female lambs given a concentrate diet ad libitum between 8 and 20 weeks of age, daily subcutaneous injections of 0·1 mg bovine pituitary growth hormone (GH) per kg live weight increased daily live-weight gain (347 v. 284 g/day; P < 0·0

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9db639431d499d943e577b8f433fdf94
https://doi.org/10.1017/s0003356100027872

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Bovine growth hormone in lambs: effects on carcass composition and tissue distribution in crossbred females

Autor: B. W. Butler-Hogg, I. D. Johnsson

Publikováno v: Animal Science. 44:117-124

Thirty-two Dorset Down × Finn Dorset female lambs were reared from 8 to 20 weeks on an ad libitum concentrate diet. They comprised four groups of eight lambs, one on each of the following treatments: (1) control, no injections; (2) daily subcutaneou

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ec403bf00a97cd7c278d731c0467f8f9
https://doi.org/10.1017/s0003356100028129

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The effects of level of nutrition before and after 8 months of age on subsequent milk and calf production of beef heifers over three lactations

Autor: J. M. Obst, I. D. Johnsson

Publikováno v: Animal Science. 38:57-68

One hundred and five Hereford heifers were reared on varying amounts of the same diet of grain and hay to grow at either high (H: 0·91 kg/day), medium (M: 0·67 kg/day) or low (L: 0·55 kg/day) rates between 2 and 8 months of age. Between 8 and 14 m

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4745e1f3f6d974742af2ddbae2b8dec3
https://doi.org/10.1017/s0003356100041350

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Pre-pubertal mammogenesis in the sheep 3. The effects of restricted feeding or daily administration of bovine growth hormone and bromocriptine on mammary growth and morphology

Autor: A. Turvey, I. D. Johnsson, I. C. Hart

Publikováno v: Animal Science. 42:53-63

In crossbred female lambs reared on a concentrate diet between 8 and 20 weeks of age, a restriction in food intake to 40 g/kg body weight per day decreased live-weight gain (155 g/day) compared with that in control lambs fed ad libitum (284 g/day) an

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::342f5ae42722098a12f3042a8f98ac18
https://doi.org/10.1017/s0003356100017724

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Fat partitioning and tissue distribution in crossbred ewes following different growth paths

Autor: B. W. Butler-Hogg, I. D. Johnsson

Publikováno v: Animal Science. 42:65-72

Forty Hampshire Down × Mule (Blue-faced Leicester cf × Swaledale 2) ewe lambs, obtained within a week of birth, were reared on milk replacer and from 6 weeks of age on a complete pelleted diet. Food intake of individual lambs was controlled to prod

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::2c9975413ff4e647ff4aaff28ac46027
https://doi.org/10.1017/s0003356100017736

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Pre-pubertal mammogenesis in the sheep 2. The effects of level of nutrition on the plasma concentrations of growth hormone, insulin and prolactin at various ages in female lambs and their relationship with mammary development

Autor: S. V. Morant, I. C. Hart, A. D. Simmonds, I. D. Johnsson

Publikováno v: Animal Science. 41:333-340

Female crossbred lambs were given a high energy and high protein diet in varying amounts to achieve either high (H; 220 g/day) or low (L; HOg/day) rates of live-weight gain during two consecutive periods between 4 and 20 and 20 and 36 weeks of age. B

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3ba910ee4d7b86cb84a6ccea7acb1bcc
https://doi.org/10.1017/s0003356100036382

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Pre-pubertal mammogenesis in the sheep 1. The effects of level of nutrition on growth and mammary development in female lambs

Autor: I. C. Hart, I. D. Johnsson

Publikováno v: Animal Science. 41:323-332

Female lambs were given a high energy and high protein diet in varying amounts to achieve either high (H; 220 g/day) or low (L; 110 g/day) rates of gain during two consecutive periods between 4 and 20 and 20 and 36 weeks of age. The effects on body g

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::086c1a6067272526c32e4bc8f4f4c82f
https://doi.org/10.1017/s0003356100036370

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The effects of dose and method of administration of biosynthetic bovine somatotropin on live-weight gain, carcass composition and wool growth in young lambs

Autor: I. D. Johnsson, R. M. Wilde, D. J. Hathorn, T. T. Treacher, B. W. Butler-Hogg

Publikováno v: Animal Science. 44:405-414

Exogenous bovine pituitary somatotropin (GH) can influence markedly body composition in fattening lambs. However, neither the effects of biosynthetic somatotropin nor the effects of dose and method of administration have been reported. Fifty Dorset-c

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::133ca81b7597ffa3b4c9ec66221c6d0e
https://doi.org/10.1017/s0003356100012332

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