Growth rate, scrotal circumference, sperm characteristics, and sexual behavior of mixed-breed goat bucks fed three leguminous trees

Aim of study: To investigate the effect feeding foliage leguminous trees on growth rate, semen characteristics, and sexual behavior bucks.
 Area Northeastern Mexico (23°44' N, 99°8' W).
 Material methods: Twenty-two young goat bucks were randomly allocated to one four treatment groups: 33% alfalfa hay (dry matter basis), 33%; Acacia farnesiana; Leucaena leucocephala; or Prosopis laevigata (n=4 for alfalfa; n=6 rest groups).
 Main results: Average daily gain (ADG) did not differ between fed alfalfa, A. farnesiana, L. leucocephala (120 ± 26, 134 37, 103 29 g/d, respectively), but ADG offered P. was lowest (72 8 g; p<0.05). Bucks had highest feed efficiency (6.59 1.25 kg consumed/kg gain; p<0.05) (average 9.85 2.3). farnesiana increased (p<0.05) scrotal circumference (26.6 0.4 25.8 1.5 cm) than leucocephala, (24.3 1.2 24.1 2.0 cm). Mean ejaculate volume two-fold higher in alfalfa-fed all other dietary treatments. Sexual among different legumes.
 Research highlights: Foliage both could totally replace rearing growing confinement without affecting weight gain, most copulation ability. reduced body reproductive function.