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Titolo:
LUPIN AND COWPEA SUPPLEMENTS FOR GROWTH, WOOL PRODUCTION, AND REPRODUCTION IN RAMS
Autore:
POMARES CC; GALLOWAY DB; HOLMES JHG; CLARKE IJ; TILBROOK AJ;
Indirizzi:
UNIV MELBOURNE,DEPT AGR PARKVILLE VIC 3052 AUSTRALIA PRINCE HENRYS INST MED RES CLAYTON VIC 3168 AUSTRALIA UNIV MELBOURNE,CTR VET CLIN WERRIBEE VIC 3030 AUSTRALIA VICTORIAN INST ANIM SCI,DEPT FOOD & AGR WERRIBEE VIC 3030 AUSTRALIA
Titolo Testata:
Australian journal of experimental agriculture
fascicolo: 4, volume: 35, anno: 1995,
pagine: 447 - 452
SICI:
0816-1089(1995)35:4<447:LACSFG>2.0.ZU;2-G
Fonte:
ISI
Lingua:
ENG
Soggetto:
LUTEINIZING-HORMONE; OVARIECTOMIZED EWES; PLASMA; SECRETION; NUTRITION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
37
Recensione:
Indirizzi per estratti:
Citazione:
C.C. Pomares et al., "LUPIN AND COWPEA SUPPLEMENTS FOR GROWTH, WOOL PRODUCTION, AND REPRODUCTION IN RAMS", Australian journal of experimental agriculture, 35(4), 1995, pp. 447-452

Abstract

Lupins and cowpeas were fed at 0.0, 0.5, 1.0, and 2.0% liveweight (LW) to groups of 6 or 7 South Australian Merino rams for 11 weeks as supplements to a maintenance diet of grass hay. Productive and reproductive parameters were examined. Supplementation at all levels of either grain increased (P<0.001) LW, condition score, backfat thickness, and wool growth, with rams showing similar responses when given cowpeas andlupins. The weights of the pancreas of rams decreased (P<0.01) as thelevels of supplementation increased. Semen characteristics (volume, concentration, motility, etc.) and response to freezing did not differ between the diets. Feeding either legume increased (P<0.001) testicular size, lupins giving a slightly greater response than cowpeas. Sperm production per g testicular tissue was not significantly altered. Increasing levels of either supplement increased (P<0.001) the weights of the seminal vesicles, more (P<0.01) so with lupins. The same effects occurred with the weight of epididymides except for rams fed cowpeas atthe highest level. Histologically, the testes revealed an increase (P<0.001) in the number of round spermatogenic cell nuclei and the cross-sectional diameter of stage 8 tubules in rams after legume grain supplementation at 2.0% LW compared with controls. The response was higherin lupin-fed rams (P<0.05). Plasma luteinising hormone (LH) and follicle stimulating hormone (FSH) were measured in rams fed at maintenanceor with lupins or cowpeas at 2.0% LW. Rams responded equally to all legumes. Concentrations of LH in peripheral blood increased (P<0.001) by 140% and FSH concentrations were elevated (P<0.01) 4-fold. Cowpeas, a tropical grain legume similar in nutrient composition to lupins, have similar potential when used as a supplement to improve productive and reproductive capabilities of Merino rams.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 19/09/20 alle ore 09:07:42