Feed intake and sperm morphology in Ogaden bucks supplemented with either agro-industrial by-products or khat (Catha edulis) leftover

Reproduction in Domestic Animals = Zuchthygiene
Y MekashaH Rodriguez-Martinez

Abstract

In this study, feed intake and sperm morphology were evaluated in Ogaden bucks supplemented with either agro-industrial by-products or khat leftover. Thirty-five bucks at about 1 year of age, and 15 +/- 1.5 kg initial body weight, were involved in a 12-week feeding programme that had four diet groups. The control (C) diet comprised grass hay alone, fed ad libitum; treatment 1 (T1) comprised grass hay ad libitum supplemented with a mix of agro-industrial by-products at 1% of body weight (BW); treatment 2 (T2) comprised grass hay ad libitum supplemented with khat leftovers at 1% of BW; and treatment 3 (T3) comprised khat leftover alone, fed ad libitum. Bucks in T1-T3 consumed the highest (p < 0.001) dry matter (DM), crude protein (CP), organic matter (OM) and gross energy (GE) compared with control. Among the treatment groups, DM, OM and GE intakes were higher (p < 0.05) in T3 and T2, while CP intake was highest (p < 0.05) in T1. T1 and T3 improved (p < 0.001) the percentage of morphologically-normal spermatozoa in comparison with C, with bucks in T3 being best. The proportion of total abnormal sperm head shapes and proximal cytoplasmic droplets was lowest (p < 0.01) in T1 and T3 and highest in C. Although feeding with T1 improve...Continue Reading

References

Nov 1, 1992·Journal of Reproduction and Fertility·G B Martin, C L White
Aug 1, 1991·Zentralblatt für Veterinärmedizin. Reihe A·L SöderquistS Einarsson
Dec 1, 1970·Journal of Reproduction and Fertility·J M Cummins, T D Glover
Jan 1, 1994·Reproduction, Nutrition, Development·B W Brown
Nov 24, 1999·Animal Reproduction Science·J ThundathilA D Barth
Oct 1, 1957·J R Microsc Soc·J L HANCOCK
Mar 27, 2007·Journal of Veterinary Medicine. A, Physiology, Pathology, Clinical Medicine·Y MekashaH Rodriguez-Martinez
Apr 24, 1942·Science·G N Papanicolaou

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