EFFECTS OF RECOMBINANT BOVINE SOMATOTROPIN ON GOAT MILK-YIELD, COMPOSITION AND PLASMA METABOLITES

被引：22

作者：

DISENHAUS, C

JAMMES, H

HERVIEU, J

TERNOIS, F

SAUVANT, D

机构：

[1] Station de Nutrition et D'Alimentation, Institut National Agronomique, 75032 Paris Cedex 05

[2] Unité d'Endocrinologie Moléculaire, Institut National de la Recherche Agronomique

来源：

SMALL RUMINANT RESEARCH | 1995年 / 15卷 / 02期

关键词：

SOMATOTROPIN; GOAT; MILK COMPOSITION; METABOLISM;

D O I：

10.1016/0921-4488(94)00019-4

中图分类号：

S8 [畜牧、动物医学、狩猎、蚕、蜂];

学科分类号：

0905 ;

摘要：

Ten multiparous lactating Alpine or Saanen goats were used to test the effects of recombinant bovine somatotropin (bST) on galactopoiesis and metabolism. Treated goats were injected daily with 5 mg bST during 28 d. Supplementation with bST significantly increased yields of milk, fat, and protein compared with controls (28.6, 41.6 and 23.7%, respectively). Voluntary feed intake was not increased. During the first week of treatment, percentage of fat was increased (+4.2 g/kg; P<0.05), but percentage of protein was decreased (-1.6 g/kg; P<0.05) in the bST group. Supplementation with bST enhanced NEFA concentration and reduced urea concentration in plasma (P<0.05), whereas beta-hydroxybutyrate and glucose concentration in plasma remained unchanged (P>0.10). The proportion of long-chain fatty acids in milk tended to increase in wks 1 and 2, but the trend was reversed in wks 3 and 4. Yields of milk fatty acids were higher for goats in the bST-treated group, particularly for the long-chain fatty acids in wks 1 and 2 (P<0.05) and the short-chain fatty acids during wks 3 and 4 of bST supplementation (P<0.01). When regression residuals were used, individual variations in response to bST were noticed (from 13 to 40%; P<0.05).

引用

页码：139 / 148

页数：10

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