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Download e-book for iPad: Controlled reproduction in sheep and goats by Ian Gordon

By Ian Gordon

ISBN-10: 0851991157

ISBN-13: 9780851991153

ISBN-10: 0851991181

ISBN-13: 9780851991184

This e-book is the second one in a suite of 4 supplying a chain on managed replica in cattle. the purpose of the sequence is to supply a common evaluation of the literature facing the several ways that copy within the significant farm mammals should be managed and manipulated. The 4 volumes are successfully an extended and re-creation of a prior paintings, Controlled Breeding in Farm Animals (Pergamon Press, 1983). although, the literature in this topic has improved so swiftly because the time of the sooner quantity, that it's now idea applicable to post it in 4 separate volumes.

Buffaloes, goats, deer and camelids were extra to the species coated via the sequence in comparison to the former e-book. All volumes supply complete reference lists and are absolutely up to date. This moment quantity specializes in sheep and goats. it's going to entice reproductive physiologists and staff in animal creation, animal breeding and veterinary drugs

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1395) Effect of dietary energy concentrations durmg the penovuiatory period on the m viuo md m mtro development of fertilized sheep ow. hceedings Bt&slt S L ~ C of ~ VAntmQI Sczence (Winter Meeung), Paper 74 (2 PP). J. (1975) Ewe an numbers of ewes per ram. New Ze&nd Journd o j ExperrmentaZ Ayrrculmre 3, 161-167. J. (1978) Flock mactng in sheep. IV. EEecr of number of ewes per ram on e~a~ulated clinaracter~sricsof Ilbldo during the mating penod. New ZedanJJnzmal grrcuXmwi Research 2 1, 187-1 95.

Some reports have shown testicular volume dropping to almost half its pre-joinln volume; there can also he a substanual decline in the bodyweigtlt of the ram due to its mating activity. e. ,1985). There wriation in testis size and semen pro ram such as the Soay, used in studies by Line ossibly be made for employing phoeoperio Soay rams to breed ewes t mameat in dealing with the imp I% is much less evident. qaliry of sernen and fertility is tower in spring effect on ejacdate volume, sperm motiliw and sperm was nu evidence that fluctuations in semen quaiiq led to problems in achieving pregnancies.

Es It shouId be noted that for most of the s puberw equally in both males pears to be s m n g evidence that the responsi y differen~ated(Herbosa and Foster, f 995); al uksertai rise iPr LW in ewe-lambs is h bs it is not. Tbese workers found organizing action of androgens on the brain during p farmers have always recognized that rams differ in their maGng d in their fertility, it only became evident some 30 years ago that rams may con~iktrteto variation in the liner size of their mates by way of king ability of their semen or in the prenatal survival of ences in r, 1969; Bradford, 1972).

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